UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

                   CERTIFIED SHAREHOLDER REPORT OF REGISTERED
                         MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-6567

                     Van Kampen Municipal Opportunity Trust
 ------------------------------------------------------------------------------
               (Exact name of registrant as specified in charter)


              1221 Avenue of the Americas New York, New York 10020
 -------------------------------------------------------------------------------
               (Address of principal executive offices) (Zip code)

                                 Ronald Robison
              1221 Avenue of the Americas New York, New York 10020
 -------------------------------------------------------------------------------
                     (Name and address of agent for service)

Registrant's telephone number, including area code: 212-762-4000

Date of fiscal year end: 10/31

Date of reporting period: 10/31/05

 
  Item 1. Report to Shareholders
  

  
  The Trust's annual report transmitted to shareholders pursuant to Rule 30e-1
  under the Investment Company Act of 1940 is as follows:
 
       Welcome, Shareholder
 
       In this report, you'll learn about how your investment in Van Kampen
       Municipal Opportunity Trust performed during the annual period. The
       portfolio management team will provide an overview of the market
       conditions and discuss some of the factors that affected investment
       performance during the reporting period. In addition, this report
       includes the trust's financial statements and a list of trust investments
       as of October 31, 2005.
 
       MARKET FORECASTS PROVIDED IN THIS REPORT MAY NOT NECESSARILY COME TO
       PASS. THERE IS NO ASSURANCE THAT THE TRUST WILL ACHIEVE ITS INVESTMENT
       OBJECTIVE. TRUSTS ARE SUBJECT TO MARKET RISK, WHICH IS THE POSSIBILITY
       THAT THE MARKET VALUES OF SECURITIES OWNED BY THE TRUST WILL DECLINE AND
       THAT THE VALUE OF TRUST SHARES MAY THEREFORE BE LESS THAN WHAT YOU PAID
       FOR THEM. ACCORDINGLY, YOU CAN LOSE MONEY INVESTING IN THIS TRUST.
 
       INCOME MAY SUBJECT CERTAIN INDIVIDUALS TO THE FEDERAL ALTERNATIVE MINIMUM
       TAX (AMT).
 


                                                                    
         ---------------------------------------------------------------------------------------
            NOT FDIC INSURED             OFFER NO BANK GUARANTEE              MAY LOSE VALUE
         ---------------------------------------------------------------------------------------
                   NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY               NOT A DEPOSIT
         ---------------------------------------------------------------------------------------


 
Performance Summary as of 10/31/05
 


MUNICIPAL OPPORTUNITY TRUST
SYMBOL: VMO
---------------------------------------------------------
AVERAGE ANNUAL                   BASED ON      BASED ON
TOTAL RETURNS                      NAV       MARKET PRICE
                                       
 
Since Inception (4/24/92)         7.91%         6.76%
 
10-year                           7.66          7.78
 
5-year                            8.40          9.13
 
1-year                            4.17          0.55
---------------------------------------------------------

 
PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE, WHICH IS NO GUARANTEE OF
FUTURE RESULTS, AND CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE FIGURES
SHOWN. FOR THE MOST RECENT MONTH-END PERFORMANCE FIGURES, PLEASE VISIT
VANKAMPEN.COM OR SPEAK WITH YOUR FINANCIAL ADVISOR. INVESTMENT RETURNS, NET
ASSET VALUE (NAV) AND COMMON SHARE MARKET PRICE WILL FLUCTUATE AND TRUST SHARES,
WHEN SOLD, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
NAV per share is determined by dividing the value of the trust's portfolio
securities, cash and other assets, less all liabilities and preferred shares, by
the total number of common shares outstanding. The common share market price is
the price the market is willing to pay for shares of the trust at a given time.
Common share market price is influenced by a range of factors, including supply
and demand and market conditions. Total return assumes an investment at the
beginning of the period, reinvestment of all distributions for the period in
accordance with the trust's dividend reinvestment plan, and sale of all shares
at the end of the period.
 
The Lehman Brothers Municipal Bond Index is a broad-based statistical composite
of municipal bonds. The index does not include any expenses, fees or sales
charges, which would lower performance. The index is unmanaged and should not be
considered an investment. It is not possible to invest directly in an index.
 
                                                                               1

 
Trust Report
 
FOR THE 12-MONTH PERIOD ENDED OCTOBER 31, 2005
 
Van Kampen Municipal Opportunity Trust is managed by the Adviser's Municipal
Fixed Income team.(1) Current members include Dennis Pietrzak, Executive
Director; Robert Wimmel, Vice President; and John Reynoldson, Executive
Director.
 
MARKET CONDITIONS
 
During the 12-month period ended October 31, 2005, the economy grew at a good
pace, with reasonable gains in employment and sustained strength in consumer
spending. Although oil prices soared, core inflation (which excludes food and
energy) remained relatively benign. Continuing with the course it began in June
of 2004, the Federal Open Market Committee (the Fed) raised the federal funds
target rate eight times during the period. Through a "measured pace" of 25 basis
point increments, the Fed brought the rate to 3.75 percent at the end of the
reporting period. While the yields of short- and intermediate-term bonds moved
upward in concert with the Fed's actions, the yields of long-term bonds ended
the period virtually unchanged. As a result, the yield curve (which charts the
difference between short-term and long-term rates) flattened.
 
Against this backdrop, total returns across the municipal bond market varied
dramatically, with long maturity bonds outperforming short-term issues by a wide
margin. As investors sought income in an environment of historically low rates,
BBB rated and non-rated bonds significantly outperformed high grade debt, and
credit spreads tightened markedly. Strong and steady flows of new cash into high
yield municipal funds added to the demand for lower rated issues.
 
Sectors with a preponderance of lower rated credits performed with particular
strength. Tobacco revenue bonds were by far the best performing sector,
supported by overall spread tightening as well as by increasing investor
confidence regarding the extent of tobacco companies' future litigation risk.
Health care bonds (hospitals and long-term care facilities) also fared well,
boosted by strong investor demand.
 
Municipal bond issuance remained robust in 2005, with $336 billion of debt
brought to market in the first 10 months of the year, a pace on track to beat
the record issuance of 2003. Refunding activity represented a good portion of
this activity, as issuers sought to refinance higher cost debt at low prevailing
interest rates. Bonds backed by insurance dominated issuance and increased their
market penetration to nearly 60 percent.
 
(1)Team members may change without notice from time to time.
 2

 
PERFORMANCE ANALYSIS
 
The trust's return can be calculated based upon either the market price or the
net asset value (NAV) of its shares. NAV per share is determined by dividing the
value of the trust's portfolio securities, cash and other assets, less all
liabilities and preferred shares, by the total number of common shares
outstanding, while market price reflects the supply and demand for the shares.
As a result, the two returns can differ, as they did during the reporting
period. On an NAV basis, the trust outperformed its benchmark index, the Lehman
Brothers Municipal Bond Index. On a market price basis, the trust underperformed
its benchmark.
 
TOTAL RETURNS FOR THE 12-MONTH PERIOD ENDED OCTOBER 31, 2005
 


----------------------------------------------------------
      BASED ON     BASED ON       LEHMAN BROTHERS
        NAV      MARKET PRICE   MUNICIPAL BOND INDEX
                                         
 
        4.17%        0.55%             2.54%
----------------------------------------------------------

 
Performance data quoted represents past performance, which is no guarantee of
future results, and current performance may be lower or higher than the figures
shown. Investment return, net asset value and common share market price will
fluctuate and trust shares, when sold, may be worth more or less than their
original cost. See Performance Summary for additional performance information
and index definition.
 
Throughout the period, we followed our long-standing practice of trading between
liquid, high quality securities which our analysis identified as compelling
total return opportunities. Our strategy involves buying these bonds when we
believe they are attractively valued, and selling them when they reach our
return targets. We then invest the proceeds into bonds with greater potential
for future total return.
 
The trust uses leverage to enhance its dividend to common shareholders. The
trust borrows money at short-term rates through the issuance of preferred
shares. The proceeds are reinvested in longer-term securities, taking advantage
of the difference between short- and longer-term rates. The Fed's policy of
raising interest rates throughout the period made the trust's borrowing activity
more expensive, thereby tempering its benefits.
 
We sought to position the trust for rising rates, a strategy which proved
beneficial during the period. To limit the trust's exposure to bonds that would
be most vulnerable to rising short-term rates, we sold shorter-term bonds. Pre-
refunded issues also figured prominently among our sales. As refinancing
activity surged, we sold many bonds which had appreciated significantly during
the time the trust had held them. We re-deployed these assets, as well as
proceeds from bonds that had been called, into the 20- to 40-year segment of the
market. We generally favored bonds with premium (above-market) coupons and more
defensive interest rate characteristics. As the yield curve continued to
flatten, these longer-maturity bonds contributed strong performance.
Additionally, we kept the overall duration of the trust defensively positioned.
(Duration is a measure of interest rate sensitivity.)
 
                                                                               3

 
At the end of the period, bonds rated AA or higher accounted for 76 percent of
holdings. Within the context of our quality focused approach, we sought
opportunities to enhance the trust's yield. For example, after thorough
research, we initiated a stake in long-term investment-grade tobacco revenue
bonds. Overall, we increased the trust's exposure to BBB rated securities by 7
percentage points to nearly 10 percent at the end of the period. Meanwhile,
exposure to AAA rated securities declined from 80 percent to 70 percent at the
end of the reporting period.
 
The trust remained well diversified across the major sectors of the municipal
market. At the close of the period, the largest sector representations were
hospital, airport, wholesale electric, general purpose and higher education.
 
There is no guarantee that any sectors mentioned will continue to perform well
or that securities in such sectors will be held by the Trust in the future.
 
CHANGES IN INVESTMENT POLICIES
 
A derivative financial instrument in very general terms refers to a security
whose value is "derived" from the value of an underlying asset, reference rate
or index.
 
The Trust recently approved a change in its investment policies to allow the
Trust to invest up to 15% of its net assets in "inverse floating rate
obligations." Floating rate obligations bear rates of interest that are adjusted
periodically to reflect changes in market rates of interest. Inverse floating
rate obligations have rates that vary inversely with changes in market rates of
interest. These securities have varying degrees of liquidity and the market
value of such securities generally will fluctuate in response to changes in
market rates of interest to a greater extent than the value of an equal
principal amount of a fixed rate security having similar credit quality,
redemption provisions and maturity.
 
 4

 


RATINGS ALLOCATION AS OF 10/31/05
                                                             
AAA/Aaa                                                          69.9%
AA/Aa                                                             6.0
A/A                                                              12.6
BBB/Baa                                                           9.8
B/B                                                               0.4
NR                                                                1.3
                                                                -----
                                                                100.0%


TOP 5 SECTORS AS OF 10/31/05
                                                             
Hospital                                                         16.2%
Airport                                                          13.2
Wholesale Electric                                               13.1
General Purpose                                                  10.3
Higher Education                                                  6.6


SUMMARY OF INVESTMENTS BY STATE CLASSIFICATION AS OF 10/31/05
                                                             
California                                                       14.8%
Texas                                                            11.7
New Jersey                                                        9.6
New York                                                          8.5
Washington                                                        5.7
North Carolina                                                    4.9
Pennsylvania                                                      4.4
Massachusetts                                                     3.6
Nevada                                                            3.1
Georgia                                                           2.6
Indiana                                                           2.2
Illinois                                                          2.0
West Virginia                                                     2.0
Michigan                                                          1.9
Florida                                                           1.8
Missouri                                                          1.7
Colorado                                                          1.7
Oklahoma                                                          1.7
Connecticut                                                       1.4
Ohio                                                              1.3
South Carolina                                                    1.3
District of Columbia                                              1.3
Louisiana                                                         1.2
Maryland                                                          1.2
Alabama                                                           1.2
Arizona                                                           1.0
Kentucky                                                          0.9
Minnesota                                                         0.8
Oregon                                                            0.7
Vermont                                                           0.6
Tennessee                                                         0.6
Iowa                                                              0.5
Virginia                                                          0.5
Wisconsin                                                         0.4
South Dakota                                                      0.4

 

                                                             
                                             (continued on next page)

 
                                                                               5

 


SUMMARY OF INVESTMENTS BY STATE CLASSIFICATION AS OF 10/31/05
                                       (continued from previous page)
                                                             
Puerto Rico                                                       0.3
Mississippi                                                       0.2
New Hampshire                                                     0.2
North Dakota                                                      0.1
                                                                -----
Total Investments                                               100.0%

 
Subject to change daily. Provided for informational purposes only and should not
be deemed as a recommendation to buy or sell the securities mentioned or
securities in the sectors shown above. Ratings and summary of investments by
state classification are as a percentage of total investments. Sectors are as a
percentage of long-term investments. Securities are classified by sectors that
represent broad groupings of related industries. Van Kampen is a wholly owned
subsidiary of a global securities firm which is engaged in a wide range of
financial services including, for example, securities trading and brokerage
activities, investment banking, research and analysis, financing and financial
advisory services. Rating allocations based upon ratings as issued by Standard
and Poor's and Moody's, respectively.
 
 6

 
FOR MORE INFORMATION ABOUT PORTFOLIO HOLDINGS
 
       Each Van Kampen trust provides a complete schedule of portfolio holdings
       in its semiannual and annual reports within 60 days of the end of the
       trust's second and fourth fiscal quarters by filing the schedule
       electronically with the Securities and Exchange Commission (SEC). The
       semiannual reports are filed on Form N-CSRS and the annual reports are
       filed on Form N-CSR. Van Kampen also delivers the semiannual and annual
       reports to trust shareholders, and makes these reports available on its
       public Web site, www.vankampen.com. In addition to the semiannual and
       annual reports that Van Kampen delivers to shareholders and makes
       available through the Van Kampen public Web site, each trust files a
       complete schedule of portfolio holdings with the SEC for the trust's
       first and third fiscal quarters on Form N-Q. Van Kampen does not deliver
       the reports for the first and third fiscal quarters to shareholders, nor
       are the reports posted to the Van Kampen public Web site. You may,
       however, obtain the Form N-Q filings (as well as the Form N-CSR and
       N-CSRS filings) by accessing the SEC's Web site, http://www.sec.gov. You
       may also review and copy them at the SEC's Public Reference Room in
       Washington, DC. Information on the operation of the SEC's Public
       Reference Room may be obtained by calling the SEC at (800) SEC-0330. You
       can also request copies of these materials, upon payment of a duplicating
       fee, by electronic request at the SEC's e-mail address
       (publicinfo@sec.gov) or by writing the Public Reference section of the
       SEC, Washington, DC 20549-0102.
 
       You may obtain copies of a trust's fiscal quarter filings by contacting
       Van Kampen Client Relations at (800) 847-2424.
 
                                                                               7

 
PROXY VOTING POLICY AND PROCEDURES AND PROXY VOTING RECORD
 
       You may obtain a copy of the Trust's Proxy Voting Policy and Procedures
       without charge, upon request, by calling toll free (800) 847-2424 or by
       visiting our Web site at www.vankampen.com. It is also available on the
       Securities and Exchange Commission's Web site at http://www.sec.gov.
 
       You may obtain information regarding how the trust voted proxies relating
       to portfolio securities during the most recent twelve-month period ended
       June 30 by visiting our Web site at www.vankampen.com. This information
       is also available on the Securities and Exchange Commission's Web site at
       http://www.sec.gov.
 
 8

 
Investment Advisory Agreement Approval
 
Both the Investment Company Act of 1940 and the terms of the Fund's investment
advisory agreement require that the investment advisory agreement between the
Fund and its investment adviser be approved annually both by a majority of the
Board of Trustees and by a majority of the independent trustees voting
separately.
 
On May 25, 2005, the Board of Trustees, and the independent trustees voting
separately, determined that the terms of the investment advisory agreement are
fair and reasonable and approved the continuance of the investment advisory
contract as being in the best interests of the Fund and its shareholders. In
making its determination, the Board of Trustees considered materials that were
specifically prepared by the investment adviser at the request of the Board and
Fund counsel, and by an independent provider of investment company data
contracted to assist the Board, relating to the contract review process. The
Board also considered information received periodically about the portfolio,
performance, the investment strategy, portfolio management team and fees and
expenses of the Fund. Finally, the Board considered materials it had received in
approving a change in the advisory fee rate effective November 1, 2004 and
materials it had received in approving a reorganization of the Fund. The Board
of Trustees considered the contract over a period of several months and the
non-management trustees held sessions both with the investment adviser and
separate from the investment adviser in reviewing and considering the contract.
 
In approving the investment advisory agreement, the Board of Trustees
considered, among other things, the nature, extent and quality of the services
provided by the investment adviser, the performance, fees and expenses of the
Fund compared to other similar funds and other products, the investment
adviser's expenses in providing the services and the profitability of the
investment adviser and its affiliated companies. The Board of Trustees
considered the extent to which any economies of scale experienced by the
investment adviser are shared with the Fund's shareholders, and the propriety of
breakpoints in the Fund's investment advisory fee schedule. The Board of
Trustees considered comparative advisory fees of the Fund and other investment
companies and/or other products at different asset levels, and considered the
trends in the industry. The Board of Trustees evaluated other benefits the
investment adviser and its affiliates derive from their relationship with the
Fund. The Board of Trustees reviewed information about the foregoing factors and
considered changes, if any, in such information since its previous approval. The
Board of Trustees discussed the financial strength of the investment adviser and
its affiliated companies and the capability of the personnel of the investment
adviser, and specifically the strength and background of its portfolio
management personnel. The Board of Trustees reviewed the statutory and
regulatory requirements for approval and disclosure of investment advisory
agreements. The Board of Trustees, including the independent trustees, evaluated
all of the foregoing and does not believe any single factor or group of
 
                                                                               9

 
factors control or dominate the review process, and, after considering all
factors together, has determined, in the exercise of its business judgment, that
approval of the investment advisory agreement is in the best interests of the
Fund and its shareholders. The following summary provides more detail on certain
matters considered but does not detail all matters considered.
 
Nature, Extent and Quality of the Services Provided. On a regular basis, the
Board of Trustees considers the roles and responsibilities of the investment
adviser as a whole and for those specific portfolio management, support and
trading functions servicing the Fund. The trustees discuss with the investment
adviser the resources available and used in managing the Fund. The trustees also
discuss certain other services which are provided on a cost-reimbursement basis
by the investment adviser or its affiliates to the Van Kampen funds including
certain accounting, administrative and legal services. The Board has determined
that the nature, extent and quality of the services provided by the investment
adviser support its decision to approve the investment advisory contract.
 
Performance, Fees and Expenses of the Fund. On a regular basis, the Board of
Trustees reviews the performance, fees and expenses of the Fund compared to its
peers and to appropriate benchmarks. In addition, the Board spends more focused
time on the performance of the Fund and other funds in the Van Kampen complex,
paying specific attention to underperforming funds. The trustees discuss with
the investment adviser the performance goals and the actual results achieved in
managing the Fund. When considering a fund's performance, the trustees and the
investment adviser place emphasis on trends and longer-term returns (focusing on
one-year, three-year and five-year performance with special attention to
three-year performance) and, when a fund's weighted performance is under the
fund's benchmark, they discuss the causes and where necessary seek to make
specific changes to investment strategy or investment personnel. The Fund
discloses more information about its performance elsewhere in this report. The
trustees discuss with the investment adviser the level of advisory fees for this
Fund relative to comparable funds and other products advised by the adviser and
others in the marketplace. The trustees review not only the advisory fees but
other fees and expenses (whether paid to the adviser, its affiliates or others)
and the Fund's overall expense ratio. The Board has determined that the
performance, fees and expenses of the Fund support its decision to approve the
investment advisory contract.
 
Investment Adviser's Expenses in Providing the Service and Profitability. At
least annually, the trustees review the investment adviser's expenses in
providing services to the Fund and other funds advised by the investment adviser
and the profitability of the investment adviser. These profitability reports are
put together by the investment adviser with the oversight of a special ad hoc
committee of the Board. The trustees discuss with the investment adviser its
revenues and expenses, including among other things, revenues for advisory
services, portfolio management-related expenses, revenue sharing arrangement
 
 10

 
costs and allocated expenses both on an aggregate basis and per fund. The Board
has determined that the analysis of the investment adviser's expenses and
profitability support its decision to approve the investment advisory contract.
 
Economies of Scale. On a regular basis, the Board of Trustees considers the size
of the Fund and how that relates to the Fund's expense ratio and particularly
the Fund's advisory fee rate. In conjunction with its review of the investment
adviser's profitability, the trustees discuss with the investment adviser how
more (or less) assets can affect the efficiency or effectiveness of managing the
Fund's portfolio and whether the advisory fee level is appropriate relative to
current asset levels and/or whether the advisory fee structure reflects
economies of scale as asset levels change. The Board has determined that its
review of the actual and potential economies of scale of the Fund support its
decision to approve the investment advisory contract.
 
Other Benefits of the Relationship. On a regular basis, the Board of Trustees
considers other benefits to the investment adviser and its affiliates derived
from its relationship with the Fund and other funds advised by the investment
adviser. These benefits include, among other things, fees for transfer agency
services provided to the funds, in certain cases research received by the
adviser generated from commission dollars spent on funds' portfolio trading, and
in certain cases distribution or service related fees related to funds' sales.
The trustees review with the investment adviser each of these arrangements and
the reasonableness of its costs relative to the services performed. The Board
has determined that the other benefits received by the investment adviser or its
affiliates support its decision to approve the investment advisory contract.
 
                                                                              11

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           MUNICIPAL BONDS  157.7%
           ALABAMA  1.8%
$ 2,000    Jefferson Cnty, AL Ltd Oblig Sch Wt Ser A....... 5.250%   01/01/23   $   2,093,080
  2,375    Marshall Cnty, AL Hlthcare Ser C................ 6.000    01/01/32       2,517,120
      5    Mobile, AL Indl Dev Brd Solid Waste Disp Rev
           Mobile Energy Svc Co Proj Rfdg.................. 6.950    01/01/20             471
                                                                                -------------
                                                                                    4,610,671
                                                                                -------------
           ARIZONA  1.6%
  1,500    Maricopa Cnty, AZ Stad Dist Rfdg (AMBAC Insd)... 5.375    06/01/19       1,625,055
  2,500    University Med Ctr Corp AZ Hosp Rev (a)......... 5.000    07/01/35       2,481,100
                                                                                -------------
                                                                                    4,106,155
                                                                                -------------
           CALIFORNIA  23.3%
  1,050    California Cnty, CA Tob Securitization Agy Asset
           Bkd Merced Cnty Ser A Rfdg...................... 5.125    06/01/38       1,014,478
  2,000    California Cnty, CA Tob Securitization Agy Asset
           Bkd Sonoma Cnty Corp Rfdg....................... 5.125    06/01/38       1,932,340
  2,000    California Edl Fac Auth Rev Occidental College
           Ser A (MBIA Insd)............................... 5.000    10/01/30       2,076,780
  2,500    California Edl Fac Auth Rev Pomona College Ser
           A............................................... 5.000    07/01/45       2,567,350
  7,500    California Hlth Fac Fin Auth Rev Cedars Sinai
           Med Ctr Rfdg.................................... 5.000    11/15/34       7,560,525
  1,000    California Pollutn Ctl Fin Auth Solid Waste Disp
           Rev Waste Mgmt Inc Proj Ser B (AMT)............. 5.000    07/01/27         985,620
     30    California Rural Home Mtg Fin Auth Single Family
           Mtg Rev Ser C (AMT) (GNMA Collateralized)....... 7.800    02/01/28          30,369
  5,500    California St Dept Wtr Res Pwr Ser A
           (Prerefunded @ 05/01/12) (AMBAC Insd)........... 5.500    05/01/16       6,082,450
  2,000    California St Dept Wtr Res Pwr Ser A
           (Prerefunded @ 05/01/12)........................ 5.750    05/01/17       2,200,200
  3,500    California St Pub Wks Brd Lease Rev Dept
           Corrections Ser C............................... 5.250    06/01/28       3,655,610
  2,000    California St Pub Wks Brd Lease Rev Dept Mental
           Hlth Coalinga Ser A............................. 5.000    06/01/25       2,068,320
  1,250    California Statewide Cmntys Dev Auth Rev
           Daughters of Charity Hlth Ser A................. 5.250    07/01/30       1,269,325
  2,500    California Statewide Cmntys Dev Auth Rev Hlth
           Fac Adventist Hlth Ser A........................ 5.000    03/01/30       2,502,600
  1,500    California Statewide Cmntys Dev Auth Rev Hlth
           Fac Adventist Hlth Ser A........................ 5.000    03/01/35       1,500,120
  4,000    Foothill/Eastern Corridor Agy CA Toll Rd Rev
           Conv Cap Apprec Sr Lien Ser A (Escrowed to
           Maturity)....................................... 7.050    01/01/10       4,575,040
  8,250    Golden St Tob Securitization Corp CA Tobacco
           Settlement Rev Enhanced Asset Bkd Ser A......... 5.000    06/01/45       8,277,720
  1,600    Long Beach, CA Bd Fin Auth Rev Redev Hsg & Gas
           Util Fin Ser A1 (AMBAC Insd).................... 5.000    08/01/40       1,621,328

 
 12                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           CALIFORNIA (CONTINUED)
$ 1,500    Los Angeles Cnty, CA Metro Tran Auth Sales Tax
           Rev Prop C Second Tier Sr Ser A Rfdg (AMBAC
           Insd)........................................... 5.000%   07/01/23   $   1,548,180
  7,500    San Jose, CA Fin Auth Lease Rev Civic Ctr Proj
           Ser B (AMBAC Insd).............................. 5.000    06/01/32       7,656,075
                                                                                -------------
                                                                                   59,124,430
                                                                                -------------
           COLORADO  2.7%
  1,250    Colorado Hlth Fac Auth Rev Covenant Retirement
           Cmntys Inc...................................... 5.000    12/01/35       1,219,550
  1,000    Colorado Hlth Fac Auth Rev Hosp Portercare
           Adventist Hlth (Prerefunded @ 11/15/11)......... 6.500    11/15/31       1,155,350
  1,000    Colorado Hsg Fin Auth Multi-Family Hsg Ins Mtg
           Ser B2 (AMT) (FHA Gtd).......................... 5.800    10/01/28       1,024,490
    101    Colorado Hsg Fin Auth Single Family Pgm Sr Ser
           A2 (AMT)........................................ 7.250    05/01/27         102,712
     60    Colorado Hsg Fin Auth Single Family Pgm Sr Ser
           C1 (AMT)........................................ 7.550    11/01/27          61,079
  1,000    Denver, CO City & Cnty Arpt Rev Ser B (AMT)
           (MBIA Insd)..................................... 6.250    11/15/07       1,047,460
  1,005    Greeley, CO Multi-Family Rev Hsg Mtg Creek Stone
           (AMT) (FHA Gtd)................................. 5.950    07/01/28       1,032,788
  1,000    Highlands Ranch Metro Dist No 2 CO Rfdg (FSA
           Insd)........................................... 6.500    06/15/11       1,141,880
                                                                                -------------
                                                                                    6,785,309
                                                                                -------------
           CONNECTICUT  2.1%
  3,250    Connecticut St Spl Oblig Pkg Rev Bradley Intl
           Arpt Ser A (AMT) (ACA Insd)..................... 6.600    07/01/24       3,525,275
  1,000    Mashantucket Western Pequot Tribe CT Spl Rev Ser
           A, 144A--Private Placement (b).................. 6.400    09/01/11       1,039,420
    840    Mashantucket Western Pequot Tribe CT Spl Rev Ser
           A, 144A--Private Placement (Escrowed to
           Maturity) (b)................................... 6.500    09/01/06         864,007
                                                                                -------------
                                                                                    5,428,702
                                                                                -------------
           DISTRICT OF COLUMBIA  2.0%
  5,000    Metropolitan Washington DC Arpt Auth Sys Ser A
           (AMT) (FGIC Insd)............................... 5.250    10/01/32       5,139,800
                                                                                -------------
 
           FLORIDA  2.8%
    230    Escambia Cnty, FL Hlth Fac Auth Rev FL Hlthcare
           Fac Ln VHA Pgm (AMBAC Insd)..................... 5.950    07/01/20         244,994
  1,000    Highlands Cnty, FL Hlth Fac Auth Rev Hosp
           Adventist Hlth Ser D............................ 5.000    11/15/35       1,005,470
  1,000    Lakeland, FL Hosp Sys Rev Lakeland Regl Hlth
           Sys............................................. 5.500    11/15/32       1,035,750

 
See Notes to Financial Statements                                             13

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           FLORIDA (CONTINUED)
$ 2,100    Miami-Dade Cnty, FL Aviation Miami Intl Arpt
           (AMT) (FGIC Insd)............................... 5.375%   10/01/27   $   2,189,586
    215    North Broward, FL Hosp Dist Rev Impt............ 6.000    01/15/31         227,758
  2,160    North Broward, FL Hosp Dist Rev Impt
           (Prerefunded @ 01/15/11)........................ 6.000    01/15/31       2,412,288
                                                                                -------------
                                                                                    7,115,846
                                                                                -------------
           GEORGIA  4.1%
  1,677    Fulton Cnty, GA Lease Rev (Acquired 12/23/1994,
           Cost $1,676,876) (c)............................ 7.250    06/15/10       1,726,830
  7,000    Georgia Muni Elec Auth Pwr Rev Ser A (MBIA
           Insd)........................................... 6.500    01/01/20       8,591,240
                                                                                -------------
                                                                                   10,318,070
                                                                                -------------
           ILLINOIS  3.2%
     35    Chicago, IL Single Family Mtg Rev Ser A (AMT)
           (GNMA Collateralized)........................... 7.000    09/01/27          35,135
     20    Chicago, IL Single Family Mtg Rev Ser B (AMT)
           (GNMA Collateralized)........................... 7.625    09/01/27          20,250
  3,000    Illinois Fin Auth Rev Northwestern Mem Hosp Ser
           A............................................... 5.500    08/15/43       3,155,490
  3,630    Kendall, Kane & Will Cntys, IL Cmnty Sch Dist
           308 Ser B (FGIC Insd) (d)....................... 5.250    10/01/20       3,899,419
  1,000    Metropolitan Pier & Expo Auth IL Dedicated St
           Tax Rev McCormick Pl Expn Proj Rfdg (FGIC
           Insd)........................................... 5.500    12/15/24       1,077,980
                                                                                -------------
                                                                                    8,188,274
                                                                                -------------
           INDIANA  3.5%
  3,270    Allen Cnty, IN War Mem Coliseum Ser A (AMBAC
           Insd) (d)....................................... 5.500    11/01/16       3,575,647
  4,120    Indiana Hlth Fac Fin Auth Hosp Rev Cmnty Proj
           Ser A (AMBAC Insd).............................. 5.000    05/01/35       4,220,198
  1,000    Indiana St Dev Fin Auth Rev Exempt Fac Conv Rfdg
           (AMT)........................................... 5.950    08/01/30       1,021,980
                                                                                -------------
                                                                                    8,817,825
                                                                                -------------
           IOWA  0.8%
  1,890    Des Moines, IA Pub Pkg Sys Rev Ser A (FGIC Insd)
           (d)............................................. 5.750    06/01/17       2,055,640
                                                                                -------------
 
           KENTUCKY  1.4%
  1,475    Kenton Cnty, KY Arpt Brd Rev Cincinnati/Northn
           KY Intl Arpt Ser A Rfdg (AMT) (MBIA Insd)....... 6.200    03/01/08       1,560,550
  1,995    Kentucky Hsg Corp Hsg Rev Ser F (AMT) (FNMA
           Collateralized)................................. 5.450    01/01/32       2,040,366
                                                                                -------------
                                                                                    3,600,916
                                                                                -------------

 
 14                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           LOUISIANA  1.8%
$ 2,500    Lafayette, LA Utils Rev (MBIA Insd)............. 5.250%   11/01/23   $   2,646,050
  1,980    Louisiana Hsg Fin Agy Rev Azalea Estates Ser A
           Rfdg (AMT) (GNMA Collateralized)................ 5.375    10/20/39       2,026,510
                                                                                -------------
                                                                                    4,672,560
                                                                                -------------
           MARYLAND  1.8%
  1,050    Maryland St Econ Dev Corp Student Hsg Rev Univ
           MD College Pk Proj.............................. 5.625    06/01/35       1,090,950
  1,000    Maryland St Hlth & Higher Ed Fac Auth Rev
           Medstar Hlth Rfdg............................... 5.375    08/15/24       1,041,490
  2,350    Northeast, MD Waste Disp Auth Rfdg (AMT) (AMBAC
           Insd)........................................... 5.500    04/01/16       2,517,343
                                                                                -------------
                                                                                    4,649,783
                                                                                -------------
           MASSACHUSETTS  5.6%
  2,400    Massachusetts St Dev Fin Agy Rev College
           Pharmacy & Allied Hlth Ser D.................... 5.000    07/01/35       2,429,208
  3,000    Massachusetts St Dev Fin Agy Semass Sys Ser A
           (MBIA Insd)..................................... 5.625    01/01/16       3,259,140
  1,000    Massachusetts St Hlth & Ed Fac Auth Rev Part
           Hlthcare Sys Ser C.............................. 5.750    07/01/32       1,088,710
  4,500    Massachusetts St Hlth & Ed Fac Auth Rev Univ of
           MA Mem Issue Ser D.............................. 5.000    07/01/33       4,436,640
  3,000    Massachusetts St Wtr Res Auth Gen Ser J (FSA
           Insd)........................................... 5.000    08/01/32       3,073,110
                                                                                -------------
                                                                                   14,286,808
                                                                                -------------
           MICHIGAN  3.0%
  3,505    Detroit, MI Wtr Supply Sys Ser B (MBIA Insd)
           (d)............................................. 5.250    07/01/18       3,772,467
  1,500    Kent Hosp Fin Auth MI Rev Metro Hosp Proj Ser
           A............................................... 6.250    07/01/40       1,617,165
  2,000    Michigan St Ctf Part (Prerefunded @ 06/01/10)
           (AMBAC Insd).................................... 5.500    06/01/27       2,133,220
                                                                                -------------
                                                                                    7,522,852
                                                                                -------------
           MINNESOTA  1.3%
     10    Chaska, MN Elec Rev Ser A....................... 6.100    10/01/30          10,931
    990    Chaska, MN Elec Rev Ser A (Prerefunded @
           10/01/10)....................................... 6.100    10/01/30       1,100,821
  2,000    Saint Paul, MN Hsg & Redev Auth Hosp Rev Hlth
           East Proj....................................... 6.000    11/15/35       2,136,760
                                                                                -------------
                                                                                    3,248,512
                                                                                -------------
           MISSISSIPPI  0.4%
    795    Mississippi Home Corp Single Family Rev Mtg Ser
           C (AMT) (GNMA Collateralized)................... 7.600    06/01/29         803,713
    325    Mississippi Home Corp Single Family Rev Mtg Ser
           F (AMT) (GNMA Collateralized)................... 7.550    12/01/27         329,618
                                                                                -------------
                                                                                    1,133,331
                                                                                -------------

 
See Notes to Financial Statements                                             15

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           MISSOURI  2.7%
$ 2,150    Cape Girardeau Cnty, MO Indl Southeast MO Hosp
           Assoc........................................... 5.500%   06/01/22   $   2,216,263
  1,375    Missouri St Hlth & Ed Fac Auth Rev Sr Living Fac
           Lutheran Ser A.................................. 5.375    02/01/35       1,409,320
     25    Saint Louis Cnty, MO Single Family Mtg Rev (MBIA
           Insd)........................................... 6.900    04/01/16          25,412
  3,000    Sikeston, MO Elec Rev Rfdg (MBIA Insd) (e)...... 6.200    06/01/10       3,283,380
                                                                                -------------
                                                                                    6,934,375
                                                                                -------------
           NEVADA  4.9%
  7,500    Clark Cnty, NV Arpt Rev Sub Lien Ser A-2 (FGIC
           Insd)........................................... 5.000    07/01/36       7,676,925
  3,000    Clark Cnty, NV Indl Dev Rev Southwest Gas Corp
           Proj Ser A (AMT) (AMBAC Insd)................... 5.250    07/01/34       3,094,590
  1,500    Reno, NV Sr Lien Retrac Reno Trans Proj (AMBAC
           Insd)........................................... 5.125    06/01/32       1,543,380
                                                                                -------------
                                                                                   12,314,895
                                                                                -------------
           NEW HAMPSHIRE  0.4%
    845    New Hampshire Hlth & Ed Fac Univ Sys of NH
           (AMBAC Insd).................................... 5.500    07/01/15         925,799
                                                                                -------------
 
           NEW JERSEY  15.1%
  2,000    Garden St Preservation Tr NJ Ser A (FSA Insd)... 5.250    11/01/18       2,158,360
  2,000    New Jersey Econ Dev Auth Cigarette Tax.......... 5.750    06/15/34       2,093,200
  5,000    New Jersey Econ Dev Auth Mtr Veh Rev Ser A (MBIA
           Insd)........................................... 5.000    07/01/22       5,248,850
 20,000    New Jersey Econ Dev Auth St Contract Econ
           Recovery (MBIA Insd)............................ 5.900    03/15/21      23,484,600
  5,000    New Jersey St Ed Fac Auth Higher Ed Cap Impt Ser
           A (AMBAC Insd).................................. 5.250    09/01/21       5,367,100
                                                                                -------------
                                                                                   38,352,110
                                                                                -------------
           NEW YORK  13.4%
  1,000    Erie Cnty, NY Tob Securitization Corp Asset Bkd
           Ser A........................................... 5.000    06/01/38         961,890
  6,000    New York City Muni Wtr Fin Auth Wtr & Swr Sys
           Rev Ser D....................................... 5.000    06/15/39       6,148,920
  6,000    New York City Ser A............................. 7.000    08/01/07       6,251,340
  4,750    New York Cnty Tob Tr IV Settlement Pass Thru Ser
           A............................................... 5.000    06/01/42       4,524,280
    500    New York St Dorm Auth Rev Mental Hlth Ser A..... 5.750    08/15/12         523,495
      5    New York St Dorm Auth Rev Mental Hlth Svcs Fac
           Ser A (Prerefunded @ 02/15/07).................. 5.750    08/15/12           5,261
  1,445    New York St Dorm Auth Rev Secd Hosp North Gen
           Hosp Rfdg (MBIA Insd)........................... 5.750    02/15/17       1,610,178
  2,040    New York St Dorm Auth Rev Secd Hosp North Gen
           Hosp Rfdg....................................... 5.750    02/15/18       2,237,309

 
 16                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           NEW YORK (CONTINUED)
$ 1,500    New York St Dorm Auth Rev Upstate Cmnty Colleges
           Ser B........................................... 5.250%   07/01/20   $   1,589,295
  1,000    New York St Dorm Auth Rev Upstate Cmnty Colleges
           Ser B........................................... 5.250    07/01/21       1,058,050
  3,780    New York St Mtg Agy Rev Ser 101 (AMT)........... 5.400    04/01/32       3,867,923
  4,000    Port Auth NY & NJ Spl Oblig Rev Spl Proj JFK
           Intl Arpt Terminal 6 (AMT) (MBIA Insd).......... 5.750    12/01/22       4,237,200
  1,000    Westchester, NY Tob Asset Securitization Corp... 5.125    06/01/38         990,570
                                                                                -------------
                                                                                   34,005,711
                                                                                -------------
           NORTH CAROLINA  7.8%
  2,500    North Carolina Cap Fac Fin Agy Rev Duke Univ
           Proj Ser A...................................... 5.000    10/01/41       2,561,800
  1,500    North Carolina Eastn Muni Pwr Agy Pwr Sys Rev
           Ser D........................................... 6.700    01/01/19       1,654,785
 11,000    North Carolina Muni Pwr Agy No 1 Catawba Elec
           Rev Rfdg (MBIA Insd)............................ 6.000    01/01/12      12,341,120
  3,000    North Carolina Muni Pwr Agy Ser A (MBIA Insd)... 5.250    01/01/19       3,204,510
                                                                                -------------
                                                                                   19,762,215
                                                                                -------------
           NORTH DAKOTA  0.2%
    435    North Dakota St Hsg Fin Agy Ser C (AMT)......... 5.550    07/01/29         441,690
                                                                                -------------
 
           OHIO  2.1%
    500    Cuyahoga Cnty, OH Hosp Fac Rev Canton Inc
           Proj............................................ 7.500    01/01/30         556,370
  3,000    Lucas Cnty, OH Hosp Rev Promedica Hlthcare Oblig
           Rfdg (MBIA Insd)................................ 6.000    11/15/07       3,143,160
  1,500    Mahoning Cnty, OH Hosp Fac Forum Hlth Oblig
           Group Ser A..................................... 6.000    11/15/32       1,592,655
                                                                                -------------
                                                                                    5,292,185
                                                                                -------------
           OKLAHOMA  2.6%
  4,770    McAlester, OK Pub Wks Auth Util Cap Apprec (FSA
           Insd)...........................................   *      02/01/34       1,174,851
  1,000    Oklahoma City, OK Pub Ppty Auth Hotel Tax Rev
           (FGIC Insd)..................................... 5.250    10/01/29       1,065,610
  1,000    Tulsa Cnty, OK Pub Fac Auth Cap Impt Rev
           (Prerefunded @ 11/01/09) (AMBAC Insd)........... 6.250    11/01/22       1,110,490
  3,140    Tulsa, OK Indl Auth Hosp Rev Hillcrest Med Cent
           Proj Rfdg (Escrowed to Maturity) (Connie Lee
           Insd) (d)....................................... 6.250    06/01/08       3,366,520
                                                                                -------------
                                                                                    6,717,471
                                                                                -------------
           OREGON  1.1%
  2,500    Oregon Hlth Sciences Univ Insd Ser A (MBIA
           Insd)........................................... 5.250    07/01/22       2,678,425
                                                                                -------------

 
See Notes to Financial Statements                                             17

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           PENNSYLVANIA  6.9%
$ 2,295    Allegheny Vly, PA Sch Dist Ser A (MBIA Insd).... 5.000%   11/01/24   $   2,393,823
  1,750    Harrisburg, PA Auth Res Gtd Sub Ser D-2 (FSA
           Insd)........................................... 5.000    12/01/33       1,862,577
  4,000    Hempfield, PA Area Sch Dist Westmoreland Cnty
           Ser A (FGIC Insd)............................... 5.250    03/15/20       4,309,760
  3,000    Susquehanna Area Regl Arpt Auth PA Ser A (AMT)
           (AMBAC Insd).................................... 5.375    01/01/21       3,155,910
  5,415    Susquehanna Area Regl Arpt Auth PA Ser A (AMT)
           (AMBAC Insd) (d)................................ 5.375    01/01/22       5,682,880
                                                                                -------------
                                                                                   17,404,950
                                                                                -------------
           SOUTH CAROLINA  2.1%
  2,500    Easley, SC Util Rev Impt & Comb Rfdg (FSA
           Insd)........................................... 5.000    12/01/34       2,582,925
  2,500    South Carolina Jobs Econ Dev Auth Indl Rev Elec
           & Gas Co Proj Ser A (AMBAC Insd)................ 5.200    11/01/27       2,644,375
                                                                                -------------
                                                                                    5,227,300
                                                                                -------------
           SOUTH DAKOTA  0.6%
  1,375    Deadwood, SD Ctfs Partn (ACA Insd).............. 6.375    11/01/20       1,460,154
                                                                                -------------
 
           TENNESSEE  0.9%
  1,000    Elizabethton, TN Hlth & Ed Fac Brd Rev Hosp
           First Mtg Ser B Impt & Rfdg..................... 8.000    07/01/33       1,182,560
  1,000    Johnson City, TN Hlth & Ed Fac Brd Hosp Rev
           First Mtg Mtn St Hlth Ser A Rfdg (MBIA Insd).... 7.500    07/01/25       1,229,990
                                                                                -------------
                                                                                    2,412,550
                                                                                -------------
           TEXAS  18.4%
     20    Austin, TX Utility Sys Rev Comb Rfdg (Escrowed
           to Maturity) (AMBAC Insd)....................... 6.500    11/15/05          20,028
  2,545    Dallas Cnty, TX Cmnty College Fin Sys (AMBAC
           Insd) (d)....................................... 5.375    02/15/17       2,704,699
  1,500    Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A
           (AMT) (FGIC Insd)............................... 5.750    11/01/30       1,591,875
  4,000    Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A
           (AMT) (FSA Insd)................................ 5.500    11/01/21       4,270,960
  5,500    Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A
           Impt & Rfdg (AMT) (FGIC Insd) (e)............... 5.500    11/01/31       5,735,015
  2,000    Houston, TX Arpt Sys Rev Sub Lien (FSA Insd).... 5.500    07/01/20       2,170,260
  3,000    Houston, TX Arpt Sys Rev Sub Lien Ser A (AMT)
           (FSA Insd)...................................... 5.625    07/01/30       3,181,230
  5,000    Houston, TX Arpt Sys Rev Sub Lien Ser A (AMT)
           (FSA Insd)...................................... 5.125    07/01/32       5,069,800
  6,000    Houston, TX Util Sys Rev First Lien Ser A Rfdg
           (FSA Insd)...................................... 5.250    05/15/21       6,410,280
  2,185    Lower CO Riv Auth TX LCRA Svcs Corp Proj Rfdg
           (FGIC Insd)..................................... 5.000    05/15/24       2,243,383

 
 18                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           TEXAS (CONTINUED)
$ 2,000    Lower CO Riv Auth TX LCRA Svcs Corp Proj Rfdg
           (FGIC Insd)..................................... 5.000%   05/15/33   $   2,034,280
  1,500    Metropolitan Hlth Fac Dev Corp TX Wilson N Jones
           Mem Hosp Proj................................... 7.250    01/01/31       1,546,395
  1,870    Midlothian, TX Indpt Sch Dist Sch Bldg Rfdg (PSF
           Gld)............................................ 5.000    02/15/25       1,939,508
  5,000    North Cent TX Hlth Fac Dev Hosp Childrens Med
           Ctr Dallas (AMBAC Insd)......................... 5.250    08/15/32       5,198,450
  2,360    University of TX Univ Rev Fin Sys Ser B......... 5.250    08/15/20       2,532,752
                                                                                -------------
                                                                                   46,648,915
                                                                                -------------
           VERMONT  1.0%
  2,500    University VT & ST Agric College (MBIA Insd).... 5.000    10/01/40       2,565,800
                                                                                -------------
 
           VIRGINIA  0.8%
  2,000    Tobacco Settlement Fin Corp VA Asset Bkd........ 5.500    06/01/26       2,048,520
                                                                                -------------
 
           WASHINGTON  9.1%
  9,850    Bellevue, WA Convention Cent Auth Spl Oblig Rev
           Comp Int Rfdg (MBIA Insd).......................   *      02/01/25       3,785,453
  3,750    Chelan Cnty, WA Pub Util Dist No 001 Cons Rev
           Chelan Hydro Ser A (AMT) (MBIA Insd)............ 5.600    01/01/36       3,977,025
  5,000    Energy Northwest WA Elec Rev Columbia Generating
           Ser A Rfdg (FSA Insd)........................... 5.500    07/01/16       5,441,500
  2,000    Port Seattle, WA Rev Inter Lien Ser A Rfdg (MBIA
           Insd)........................................... 5.000    03/01/28       2,066,940
  2,000    Port Seattle, WA Rev Inter Lien Ser A Rfdg (MBIA
           Insd)........................................... 5.000    03/01/30       2,059,260
  2,000    Port Seattle, WA Rev Ser B (AMT) (MBIA Insd).... 5.625    02/01/24       2,123,640
  5,125    Washington St Pub Pwr Supply Sys Nuclear Proj No
           3 Rev Ser C Rfdg (MBIA Insd) (d)................   *      07/01/14       3,508,677
                                                                                -------------
                                                                                   22,962,495
                                                                                -------------
           WEST VIRGINIA  3.2%
  8,000    Harrison Cnty, WV Cmnty Solid Waste Disp Rev
           West Penn Pwr Co Proj Ser A (AMT) (MBIA Insd)... 6.875    04/15/22       8,022,640
                                                                                -------------
 
           WISCONSIN  0.7%
  1,500    Southeast WI Professional Baseball Pk Dist Sales
           Tax Rev Ser A Rfdg (MBIA Insd).................. 5.500    12/15/20       1,695,855
                                                                                -------------

 
See Notes to Financial Statements                                             19

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 


PAR
AMOUNT
(000)      DESCRIPTION                                      COUPON   MATURITY       VALUE
---------------------------------------------------------------------------------------------
                                                                    
           PUERTO RICO  0.5%
$ 1,250    Puerto Rico Comwlth Hwy & Trans Auth Rev Ser K.. 5.000%   07/01/45   $   1,250,863
                                                                                -------------
 
TOTAL INVESTMENTS  157.7%
  (Cost $380,406,990)........................................................     399,930,402
OTHER ASSETS IN EXCESS OF LIABILITIES  1.5%..................................       3,912,824
PREFERRED SHARES (INCLUDING ACCRUED DISTRIBUTIONS)  (59.2%)..................    (150,170,142)
                                                                                -------------
 
NET ASSETS APPLICABLE TO COMMON SHARES  100.0%...............................   $ 253,673,084
                                                                                =============

 
Percentages are calculated as a percentage of net assets applicable to common
shares.
 
*   Zero coupon bond
 
(a) Security purchased on a when-issued or delayed delivery basis.
 
(b) 144A securities are those which are exempt from registration under Rule 144A
    of the Securities Act of 1933, as amended. These securities may only be
    resold in transactions exempt from registration which are normally those
    transactions with qualified institutional buyers.
 
(c) These securities are restricted and may be resold only in transactions
    exempt from registration which are normally those transactions with
    qualified institutional buyers. Restricted securities comprise 0.7% of net
    assets applicable to common shares.
 
(d) The Trust owns 100% of the bond issuance.
 
(e) All or a portion of these securities have been physically segregated in
    connection with open futures contracts.
 
ACA--American Capital Access
 
AMBAC--AMBAC Indemnity Corp.
 
AMT--Alternative Minimum Tax
 
Connie Lee--Connie Lee Insurance Co.
 
FGIC--Financial Guaranty Insurance Co.
 
FHA--Federal Housing Administration
 
FNMA--Federal National Mortgage Association
 
FSA--Financial Security Assurance Inc.
 
GNMA--Government National Mortgage Association
 
MBIA--Municipal Bond Investors Assurance Corp.
 
PSF--Public School Fund
 
 20                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2005 continued
 
FUTURES CONTRACTS OUTSTANDING AS OF OCTOBER 31, 2005:
 


                                                                            UNREALIZED
                                                                           APPRECIATION/
                                                              CONTRACTS    DEPRECIATION
                                                                     
SHORT CONTRACTS
U.S. Treasury Notes 5-Year Futures December 2005 (Current
  Notional Value of $105,891 per contract)..................    1,227       $1,718,621
                                                                =====       ==========

 
See Notes to Financial Statements                                             21

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
FINANCIAL STATEMENTS

Statement of Assets and Liabilities
October 31, 2005
 

                                                           
ASSETS:
Total Investments (Cost $380,406,990).......................  $399,930,402
Cash........................................................       884,682
Receivables:
  Interest..................................................     6,109,748
  Investments Sold..........................................       116,384
Other.......................................................        11,190
                                                              ------------
    Total Assets............................................   407,052,406
                                                              ------------
LIABILITIES:
Payables:
  Investments Purchased.....................................     2,488,350
  Investment Advisory Fee...................................       189,339
  Income Distributions--Common Shares.......................        49,560
  Other Affiliates..........................................        21,254
  Variation Margin on Futures...............................        19,172
Trustees' Deferred Compensation and Retirement Plans........       317,651
Accrued Expenses............................................       123,854
                                                              ------------
    Total Liabilities.......................................     3,209,180
Preferred Shares (including accrued distributions)..........   150,170,142
                                                              ------------
NET ASSETS APPLICABLE TO COMMON SHARES......................  $253,673,084
                                                              ============
NET ASSET VALUE PER COMMON SHARE ($253,673,084 divided by
  15,357,684 shares outstanding)............................  $      16.52
                                                              ============
NET ASSETS CONSIST OF:
Common Shares ($.01 par value with an unlimited number of
  shares authorized, 15,357,684 shares issued and
  outstanding)..............................................  $    153,577
Paid in Surplus.............................................   226,763,756
Net Unrealized Appreciation.................................    21,242,033
Accumulated Net Realized Gain...............................     4,893,490
Accumulated Undistributed Net Investment Income.............       620,228
                                                              ------------
NET ASSETS APPLICABLE TO COMMON SHARES......................  $253,673,084
                                                              ------------
PREFERRED SHARES ($.01 par value, authorized 100,000,000
  shares, 6,000 issued with liquidation preference of
  $25,000 per share)........................................  $150,000,000
                                                              ============
NET ASSETS INCLUDING PREFERRED SHARES.......................  $403,673,084
                                                              ============

 
 22                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
FINANCIAL STATEMENTS continued
 
Statement of Operations
For the Year Ended October 31, 2005
 

                                                           
INVESTMENT INCOME:
Interest....................................................  $ 20,284,677
                                                              ------------
EXPENSES:
Investment Advisory Fee.....................................     2,246,855
Preferred Share Maintenance.................................       398,852
Legal.......................................................        75,200
Trustees' Fees and Related Expenses.........................        66,498
Custody.....................................................        47,919
Other.......................................................       211,952
                                                              ------------
    Total Expenses..........................................     3,047,276
                                                              ------------
NET INVESTMENT INCOME.......................................  $ 17,237,401
                                                              ============
REALIZED AND UNREALIZED GAIN/LOSS:
Realized Gain/Loss:
  Investments...............................................  $  5,052,527
  Futures...................................................       102,834
                                                              ------------
Net Realized Gain...........................................     5,155,361
                                                              ------------
Unrealized Appreciation/Depreciation:
  Beginning of the Period...................................    31,576,864
                                                              ------------
  End of the Period:
    Investments.............................................    19,523,412
    Futures.................................................     1,718,621
                                                              ------------
                                                                21,242,033
                                                              ------------
Net Unrealized Depreciation During the Period...............   (10,334,831)
                                                              ------------
NET REALIZED AND UNREALIZED LOSS............................  $ (5,179,470)
                                                              ============
DISTRIBUTIONS TO PREFERRED SHAREHOLDERS.....................  $ (3,356,327)
                                                              ============
NET INCREASE IN NET ASSETS APPLICABLE TO COMMON SHARES FROM
  OPERATIONS................................................  $  8,701,604
                                                              ============

 
See Notes to Financial Statements                                             23

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
FINANCIAL STATEMENTS continued
 
Statements of Changes in Net Assets
 


                                                              FOR THE             FOR THE
                                                             YEAR ENDED          YEAR ENDED
                                                          OCTOBER 31, 2005    OCTOBER 31, 2004
                                                          ------------------------------------
                                                                        
FROM INVESTMENT ACTIVITIES:
Operations:
Net Investment Income...................................   $  17,237,401       $  17,351,540
Net Realized Gain/Loss..................................       5,155,361          (2,096,470)
Net Unrealized Appreciation/Depreciation During the
  Period................................................     (10,334,831)          5,600,393
Distributions to Preferred Shareholders:
  Net Investment Income.................................      (3,356,327)         (1,527,703)
  Net Realized Gain.....................................             -0-            (321,388)
                                                           -------------       -------------
Change in Net Assets Applicable to Common Shares from
  Operations............................................       8,701,604          19,006,372
 
Distributions to Common Shareholders:
  Net Investment Income.................................     (14,450,796)        (16,600,321)
  Net Realized Gain.....................................             -0-          (4,376,481)
                                                           -------------       -------------
 
NET CHANGE IN NET ASSETS APPLICABLE TO COMMON SHARES
  FROM INVESTMENT ACTIVITIES............................      (5,749,192)         (1,970,430)
                                                           -------------       -------------
 
FROM CAPITAL TRANSACTIONS:
Value of Common Shares Issued Through Dividend
  Reinvestment..........................................             -0-              81,435
                                                           -------------       -------------
TOTAL DECREASE IN NET ASSETS APPLICABLE TO COMMON
  SHARES................................................      (5,749,192)         (1,888,995)
NET ASSETS APPLICABLE TO COMMON SHARES:
Beginning of the Period.................................     259,422,276         261,311,271
                                                           -------------       -------------
End of the Period (Including accumulated undistributed
  net investment income of $620,228 and $1,189,973,
  respectively).........................................   $ 253,673,084       $ 259,422,276
                                                           =============       =============

 
 24                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
FINANCIAL HIGHLIGHTS
 
THE FOLLOWING SCHEDULE PRESENTS FINANCIAL HIGHLIGHTS FOR ONE COMMON SHARE OF THE
TRUST OUTSTANDING THROUGHOUT THE PERIODS INDICATED.
 


                                                          YEAR ENDED OCTOBER 31,
                                             ------------------------------------------------
                                              2005      2004      2003     2002 (a)    2001
                                             ------------------------------------------------
                                                                       
NET ASSET VALUE, BEGINNING OF THE PERIOD...  $ 16.89   $ 17.02   $ 17.48   $ 17.59    $ 16.29
                                             -------   -------   -------   -------    -------
  Net Investment Income....................     1.12      1.13      1.19      1.23       1.26
  Net Realized and Unrealized Gain/Loss....     (.33)      .23       .09       .15       1.29
    Common Share Equivalent of
    Distributions Paid to Preferred
    Shareholders:
      Net Investment Income................     (.22)     (.10)     (.08)     (.09)      (.32)
      Net Realized Gain....................      -0-      (.02)     (.04)     (.08)      (.01)
                                             -------   -------   -------   -------    -------
Total from Investment Operations...........      .57      1.24      1.16      1.21       2.22
Distributions Paid to Common Shareholders:
      Net Investment Income................     (.94)    (1.08)    (1.16)    (1.08)      (.92)
      Net Realized Gain....................      -0-      (.29)     (.46)     (.24)       -0-
                                             -------   -------   -------   -------    -------
NET ASSET VALUE, END OF THE PERIOD.........  $ 16.52   $ 16.89   $ 17.02   $ 17.48    $ 17.59
                                             =======   =======   =======   =======    =======
 
Common Share Market Price at End of the
  Period...................................  $ 14.35   $ 15.20   $ 16.65   $ 16.04    $ 15.65
Total Return (b)...........................    0.55%    -0.60%    14.53%    11.36%     21.42%
Net Assets Applicable to Common Shares at
  End of the Period (In millions)..........  $ 253.7   $ 259.4   $ 261.3   $ 268.3    $ 270.0
Ratio of Expenses to Average Net Assets
  Applicable to
  Commons Shares (c).......................    1.18%     1.30%     1.28%     1.42%      1.58%
Ratio of Net Investment Income to Average
  Net Assets Applicable to Common Shares
  (c)......................................    6.67%     6.74%     6.90%     7.17%      7.40%
Portfolio Turnover.........................      32%       28%       36%       43%        34%
 
SUPPLEMENTAL RATIOS:
Ratio of Expenses to Average Net Assets
  Including
  Preferred Shares (c).....................     .75%      .82%      .81%      .91%      1.00%
Ratio of Net Investment Income to Average
  Net Assets Applicable to Common Shares
  (d)......................................    5.37%     6.15%     6.43%     6.61%      5.54%
 
SENIOR SECURITIES:
Total Preferred Shares Outstanding.........    6,000     6,000     6,000     6,000      6,000
Asset Coverage Per Preferred Share (e).....  $67,307   $68,253   $68,560   $69,736    $70,006
Involuntary Liquidating Preference Per
  Preferred Share..........................  $25,000   $25,000   $25,000   $25,000    $25,000
Average Market Value Per Preferred Share...  $25,000   $25,000   $25,000   $25,000    $25,000

 
(a)As required, effective November 1, 2001, the Trust has adopted the provisions
   of the AICPA Audit and Accounting Guide for Investment Companies and began
   accreting market discount on fixed income securities. The effect of this
   change for the year ended October 31, 2002 was to increase net investment
   income per share by $.01, decrease net realized and unrealized gains and
   losses per share by $.01 and increase the ratio of net investment income to
   average net assets applicable to common shares by .03%. Per share, ratios and
   supplemental data for periods prior to October 31, 2002 have not been
   restated to reflect this change in presentation.
 
(b)Total return assumes an investment at the common share market price at the
   beginning of the period indicated, reinvestment of all distributions for the
   period in accordance with the Trust's dividend reinvestment plan, and sale of
   all shares at the closing common share market price at the end of the period
   indicated.
 
(c)Ratios do not reflect the effect of dividend payments to preferred
   shareholders.
 
(d)Ratios reflect the effect of dividend payments to preferred shareholders.
 
(e)Calculated by subtracting the Trust's total liabilities (not including the
   preferred shares) from the Trust's total assets and dividing this by the
   number of preferred shares outstanding.
 
See Notes to Financial Statements                                             25


 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2005
 
1. SIGNIFICANT ACCOUNTING POLICIES
 
Van Kampen Municipal Opportunity Trust (the "Trust") is registered as a
diversified, closed-end management investment company under the Investment
Company Act of 1940, as amended. The Trust's investment objective is to provide
a high level of current income exempt from federal income tax, consistent with
preservation of capital. The Trust commenced investment operations on April 24,
1992.
 
    The following is a summary of significant accounting policies consistently
followed by the Trust in the preparation of its financial statements. The
preparation of financial statements in conformity with accounting principles
generally accepted in the United States of America requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities and disclosure of contingent assets and liabilities at the date of
the financial statements and the reported amounts of revenues and expenses
during the reporting period. Actual results could differ from those estimates.
 
A. SECURITY VALUATION Municipal bonds are valued by independent pricing services
or dealers using the mean of the bid and asked prices or, in the absence of
market quotations, at fair value based upon yield data relating to municipal
bonds with similar characteristics and general market conditions. Securities
which are not valued by independent pricing services or dealers are valued at
fair value using procedures established in good faith by the Board of Trustees.
Futures contracts are valued at the settlement price established each day on the
exchange on which they are traded. Short-term securities with remaining
maturities of 60 days or less are valued at amortized cost, which approximates
market value.
 
B. SECURITY TRANSACTIONS Security transactions are recorded on a trade date
basis. Realized gains and losses are determined on an identified cost basis. The
Trust may purchase and sell securities on a "when-issued" or "delayed delivery"
basis, with settlement to occur at a later date. The value of the security so
purchased is subject to market fluctuations during this period. The Trust will
segregate assets with the custodian having an aggregate value at least equal to
the amount of the when-issued or delayed delivery purchase commitments until
payment is made. At October 31, 2005, the Trust had $2,488,350 of when-issued or
delayed delivery purchase commitments.
 
C. INVESTMENT INCOME Interest income is recorded on an accrual basis. Bond
premium is amortized and discount is accreted over the expected life of each
applicable security.
 
D. FEDERAL INCOME TAXES It is the Trust's policy to comply with the requirements
of Subchapter M of the Internal Revenue Code applicable to regulated investment
companies and to distribute substantially all of its taxable income to its
shareholders. Therefore, no provision for federal income taxes is required.
 
    The Trust intends to utilize provisions of the federal income tax laws which
allow it to carry a realized capital loss forward for eight years following the
year of the loss and offset these losses against any future realized capital
gains. During the current fiscal year, the Trust utilized capital losses carried
forward of $694,750.
 
 26

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2005 continued
 
    At October 31, 2005, the cost and related gross unrealized appreciation and
depreciation are as follows:
 

                                                           
Cost of investments for tax purposes........................  $380,230,096
                                                              ============
Gross tax unrealized appreciation...........................  $ 21,290,561
Gross tax unrealized depreciation...........................    (1,590,255)
                                                              ------------
Net tax unrealized appreciation on investments..............  $ 19,700,306
                                                              ============

 
E. DISTRIBUTION OF INCOME AND GAINS The Trust declares and pays monthly
dividends from net investment income to common shareholders. Net realized gains,
if any, are distributed annually on a pro rata basis to common and preferred
shareholders. Distributions from net realized gains for book purposes may
include short-term capital gains, which are included as ordinary income for tax
purposes.
 
    The tax character of distributions paid during the years ended October 31,
2005 and 2004 was as follows:
 


DISTRIBUTIONS PAID FROM:                                      2005       2004
                                                                
Ordinary income.............................................  $371    $1,281,469
Long-term capital gain......................................   -0-     3,842,711
                                                              ----    ----------
                                                              $371    $5,124,180
                                                              ====    ==========

 
    Due to inherent differences in the recognition of income, expenses and
realized gains/ losses under accounting principles generally accepted in the
United States of America and federal income tax purposes, permanent differences
between financial and tax basis reporting for the 2005 fiscal year have been
identified and appropriately reclassified. A permanent difference of $23
relating to book to tax accretion differences was reclassified from accumulated
undistributed net investment income to accumulated net realized gain.
 
    As of October 31, 2005, the components of distributable earnings on a tax
basis were as follows:
 

                                                           
Undistributed ordinary income...............................  $  477,111
Undistributed long-term capital gain........................   6,136,620

 
    Net realized gains or losses may differ for financial reporting and tax
purposes primarily as a result of the deferral of losses relating to wash sale
transactions and gains or losses recognized for tax purposes on open futures
transactions on October 31, 2005.
 
2. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS WITH AFFILIATES
 
Under the terms of the Trust's Investment Advisory Agreement, Van Kampen Asset
Management (the "Adviser") will provide investment advice and facilities to the
Trust for an annual fee payable monthly of .55% of the average daily net assets
of the Trust. Effective November 1, 2004, the investment advisory fee was
reduced from .60% to .55%.
 
    For the year ended October 31, 2005, the Trust recognized expenses of
approximately $32,100 representing legal services provided by Skadden, Arps,
Slate, Meagher & Flom LLP,
 
                                                                              27

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2005 continued
 
of which a trustee of the Trust is a partner of such firm and he and his law
firm provide legal services as legal counsel to the Trust.
 
    Under separate Legal Services, Accounting Services and Chief Compliance
Officer ("CCO") Employment agreements, the Adviser provides accounting and legal
services and the CCO provides compliance services to the Trust. The costs of
these services are allocated to each trust. For the year ended October 31, 2005,
the Trust recognized expenses of approximately $70,900 representing Van Kampen
Investment Inc.'s or its affiliates' (collectively "Van Kampen") cost of
providing accounting and legal services to the Trust, as well as, the salary,
benefits and related costs of the CCO and related support staff paid by Van
Kampen. Services provided pursuant to the Legal Services agreement are reported
as part of "Legal" expenses on the Statement of Operations. Services provided
pursuant to the Accounting Services and CCO Employment agreement are reported as
part of "Other" expenses on the Statement of Operations.
 
    Certain officers and trustees of the Trust are also officers and directors
of Van Kampen. The Trust does not compensate its officers or trustees who are
also officers of Van Kampen.
 
    The Trust provides deferred compensation and retirement plans for its
trustees who are not officers of Van Kampen. Under the deferred compensation
plan, trustees may elect to defer all or a portion of their compensation to a
later date. Benefits under the retirement plan are payable upon retirement for a
ten-year period and are based upon each trustee's years of service to the Trust.
The maximum annual benefit per trustee under the plan is $2,500.
 
3. CAPITAL TRANSACTIONS
 
At October 31, 2005 and 2004, paid in surplus related to common shares
aggregated $226,763,756 and $226,763,756, respectively.
 
    Transactions in common shares were as follows:
 


                                                             YEAR ENDED          YEAR ENDED
                                                          OCTOBER 31, 2005    OCTOBER 31, 2004
                                                                        
Beginning Shares........................................     15,357,684          15,352,891
Shares Issued Through Dividend Reinvestment.............            -0-               4,793
                                                             ----------          ----------
Ending Shares...........................................     15,357,684          15,357,684
                                                             ==========          ==========

 
4. INVESTMENT TRANSACTIONS
 
During the period, the cost of purchases and proceeds from sales of investments,
excluding short-term investments, were $133,067,817 and $131,062,563,
respectively.
 
5. DERIVATIVE FINANCIAL INSTRUMENTS
 
A derivative financial instrument in very general terms refers to a security
whose value is "derived" from the value of an underlying asset, reference rate
or index.
 
    In order to seek to manage the interest rate exposure of the Trust's
portfolio in a changing interest rate environment, the Trust may purchase or
sell financial futures contracts or engage in transactions involving interest
rate swaps, caps, floors and collars. The Trust expects to enter into these
transactions primarily as a hedge against anticipated interest rate or fixed
income market changes, for duration management or for risk management purposes,
but may also enter into these transactions to generate additional income. All of
the Trust's
 
 28

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2005 continued
 
portfolio holdings, including derivative instruments, are marked to market each
day with the change in value reflected in the unrealized
appreciation/depreciation. Upon disposition, a realized gain or loss is
recognized accordingly, except when taking delivery of a security underlying a
futures contract. In this instance, the recognition of gain or loss is postponed
until the disposal of the security underlying the futures contract. Risks may
arise as a result of the potential inability of the counter parties to meet the
terms of their contracts.
 
    During the period, the Trust invested in futures contracts, a type of
derivative. A futures contract is an agreement involving the delivery of a
particular asset on a specified future date at an agreed upon price. The Trust
generally invests in exchange traded futures contracts on U.S. Treasury Bonds
and Notes and typically closes the contract prior to the delivery date. These
contracts are generally used to manage the Trust's effective maturity and
duration. Upon entering into futures contracts, the Trust maintains an amount of
cash or liquid securities with a value equal to a percentage of the contract
amount with either a future commission merchant pursuant to rules and
regulations promulgated under the 1940 Act, as amended, or with its custodian in
an account in the broker's name. This amount is known as initial margin. During
the period the futures contract is open, payments are received from or made to
the broker based upon changes in the value of the contract (the variation
margin). The risk of loss associated with a futures contract is in excess of the
variation margin reflected on the Statement of Assets and Liabilities.
 
    Transactions in futures contracts for the year ended October 31, 2005, were
as follows:
 


                                                              CONTRACTS
                                                           
Outstanding at October 31, 2004.............................      601
Futures Opened..............................................    3,681
Futures Closed..............................................   (3,055)
                                                               ------
Outstanding at October 31, 2005.............................    1,227
                                                               ======

 
6. PREFERRED SHARES
 
The Trust has outstanding 6,000 Auction Preferred Shares ("APS") in two series
of 3,000 shares each. Dividends are cumulative and the dividend rate on each
series is currently reset every 28 days through an auction process. The average
rate in effect on October 31, 2005 was 2.675%. During the year ended October 31,
2005, the rates ranged from 1.550% to 2.850%.
 
    The Trust pays annual fees equivalent to .25% of the preferred share
liquidation value for the remarketing efforts associated with the preferred
auctions. These fees are included as a component of "Preferred Share
Maintenance" expense on the Statement of Operations.
 
    The APS are redeemable at the option of the Trust in whole or in part at the
liquidation value of $25,000 per share plus accumulated and unpaid dividends.
The Trust is subject to certain asset coverage tests and the APS are subject to
mandatory redemption if the tests are not met.
 
7. INDEMNIFICATIONS
 
The Trust enters into contracts that contain a variety of indemnifications. The
Trust's maximum exposure under these arrangements is unknown. However, the Trust
has not had prior claims or losses pursuant to these contracts and expects the
risk of loss to be remote.
 
                                                                              29

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2005 continued
 
8. TRUST MERGER
 
On June 30, 2005, the Trustees of Van Kampen Advantage Municipal Income Trust
("Target Trust") announced its intention to merge the Target Trust into Van
Kampen Municipal Opportunity Trust ("Acquiring Trust"). The Trustees of each of
the trusts have approved in principal an agreement and plan of reorganization
between the trusts providing for a transfer of assets and liabilities of the
Target Trust to the Acquiring Trust in exchange for shares of beneficial
interest of the Acquiring Trust (the "Reorganization"). The Reorganization is
subject to approval by the shareholders of the Target Trust. The issuance of
additional common shares is subject to the approval of the Acquiring Trust.
 
 30

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 
To the Board of Trustees and Shareholders of Van Kampen Municipal Opportunity
Trust:
 
We have audited the accompanying statement of assets and liabilities of Van
Kampen Municipal Opportunity Trust (the "Trust"), including the portfolio of
investments, as of October 31, 2005, the related statement of operations for the
year then ended, the statements of changes in net assets for each of the two
years in the period then ended, and the financial highlights for each of the
five years in the period then ended. These financial statements and financial
highlights are the responsibility of the Trust's management. Our responsibility
is to express an opinion on these financial statements and financial highlights
based on our audits.
 
    We conducted our audits in accordance with the standards of the Public
Company Accounting Oversight Board (United States). Those standards require that
we plan and perform the audit to obtain reasonable assurance about whether the
financial statements and financial highlights are free of material misstatement.
The Trust is not required to have, nor were we engaged to perform, an audit of
its internal control over financial reporting. Our audits included consideration
of internal control over financial reporting as a basis for designing audit
procedures that are appropriate in the circumstances, but not for the purpose of
expressing an opinion on the effectiveness of the Trust's internal control over
financial reporting. Accordingly, we express no such opinion. An audit also
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, as well as evaluating the
overall financial statement presentation. Our procedures included confirmation
of securities owned as of October 31, 2005, by correspondence with the Trust's
custodian and brokers; where replies were not received from brokers, we
performed other auditing procedures. We believe that our audits provide a
reasonable basis for our opinion.
 
    In our opinion, the financial statements and financial highlights referred
to above present fairly, in all material respects, the financial position of Van
Kampen Municipal Opportunity Trust as of October 31, 2005, the results of its
operations for the year then ended, the changes in its net assets for each of
the two years in the period then ended and the financial highlights for each of
the five years in the period then ended, in conformity with accounting
principles generally accepted in the United States of America.
 
DELOITTE & TOUCHE LLP
Chicago, Illinois
December 20, 2005
 
                                                                              31

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
DIVIDEND REINVESTMENT PLAN
 
    The Trust offers a dividend reinvestment plan (the "Plan") pursuant to which
Common Shareholders may elect to have dividends and capital gains distributions
reinvested in Common Shares of the Trust. The Trust declares dividends out of
net investment income, and will distribute annually net realized capital gains,
if any. Common Shareholders may join or withdraw from the Plan at any time.
 
    If you decide to participate in the Plan, EquiServe Trust Company, N.A., as
your Plan Agent, will automatically invest your dividends and capital gains
distributions in Common Shares of the Trust for your account.
 
HOW TO PARTICIPATE
 
    If you wish to participate and your shares are held in your own name, call
1-800-341-2929 for more information and a Plan brochure. If your shares are held
in the name of a brokerage firm, bank, or other nominee, you should contact your
nominee to see if it would participate in the Plan on your behalf. If you wish
to participate in the Plan, but your brokerage firm, bank or nominee is unable
to participate on your behalf, you should request that your shares be
re-registered in your own name which will enable your participation in the Plan.
 
HOW THE PLAN WORKS
 
    Participants in the Plan will receive the equivalent in Common Shares valued
on the valuation date, generally at the lower of market price or net asset
value, except as specified below. The valuation date will be the dividend or
distribution payment date or, if that date is not a trading day on the national
securities exchange or market system on which the Common Shares are listed for
trading, the next preceding trading day. If the market price per Common Share on
the valuation date equals or exceeds net asset value per Common Share on that
date, the Trust will issue new Common Shares to participants valued at the
higher of net asset value or 95% of the market price on the valuation date. In
the foregoing situation, the Trust will not issue Common Shares under the Plan
below net asset value. If net asset value per Common Share on the valuation date
exceeds the market price per Common Share on that date, or if the Board of
Trustees should declare a dividend or capital gains distribution payable to the
Common Shareholders only in cash, participants in the Plan will be deemed to
have elected to receive Common Shares from the Trust valued at the market price
on that date. Accordingly, in this circumstance, the Plan Agent will, as agent
for the participants, buy the Trust's Common Shares in the open market for the
participants' accounts on or shortly after the payment date. If, before the Plan
Agent has completed its purchases, the market price exceeds the net asset value
per share of the Common Shares, the average per share purchase price paid by the
Plan Agent may exceed the net asset value
 
 32

VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
DIVIDEND REINVESTMENT PLAN continued
 
of the Trust's Common Shares, resulting in the acquisition of fewer Common
Shares than if the dividend or distribution had been paid in Common Shares
issued by the Trust. All reinvestments are in full and fractional Common Shares
and are carried to three decimal places.
 
    Experience under the Plan may indicate that changes are desirable.
Accordingly, the Trust reserves the right to amend or terminate the Plan as
applied to any dividend or distribution paid subsequent to written notice of the
changes sent to all Common Shareholders of the Trust at least 90 days before the
record date for the dividend or distribution. The Plan also may be amended or
terminated by the Plan Agent by at least 90 days written notice to all Common
Shareholders of the Trust.
 
COSTS OF THE PLAN
 
    The Plan Agent's fees for the handling of the reinvestment of dividends and
distributions will be paid by the Trust. However, each participant will pay a
pro rata share of brokerage commissions incurred with respect to the Plan
Agent's open market purchases in connection with the reinvestment of dividends
and distributions. No other charges will be made to participants for reinvesting
dividends or capital gains distributions, except for certain brokerage
commissions, as described above.
 
TAX IMPLICATIONS
 
    You will receive tax information annually for your personal records and to
help you prepare your federal income tax return. The automatic reinvestment of
dividends and capital gains distributions does not relieve you of any income tax
which may be payable on dividends or distributions.
 
RIGHT TO WITHDRAW
 
    Plan participants may withdraw at any time by calling 1-800-341-2929 or by
writing EquiServe Trust Company, N.A., c/o Computershare Investor Services, P.O.
Box 43010, Providence, Rhode Island 02940-3010. If you withdraw, you will
receive, without charge, a share certificate issued in your name for all full
Common Shares credited to your account under the Plan and a cash payment will be
made for any fractional Common Share credited to your account under the Plan.
You may again elect to participate in the Plan at any time by calling
1-800-341-2929 or writing to the Trust at:
 
                              Van Kampen Funds Inc.
                              Attn: Closed-End Funds
                                2800 Post Oak Blvd.
                                 Houston, TX 77056
 
                                                                              33

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
BOARD OF TRUSTEES, OFFICERS AND IMPORTANT ADDRESSES
 
BOARD OF TRUSTEES
 
DAVID C. ARCH
JERRY D. CHOATE
ROD DAMMEYER
LINDA HUTTON HEAGY
R. CRAIG KENNEDY
HOWARD J KERR
JACK E. NELSON
HUGO F. SONNENSCHEIN
WAYNE W. WHALEN* - Chairman
SUZANNE H. WOOLSEY
 
OFFICERS
 
RONALD E. ROBISON
President and Principal Executive Officer
 
JOSEPH J. MCALINDEN
Executive Vice President and
Chief Investment Officer
 
AMY R. DOBERMAN
Vice President
 
STEFANIE V. CHANG
Vice President and Secretary
 
JOHN L. SULLIVAN
Chief Compliance Officer
 
PHILLIP G. GOFF
Chief Financial Officer and Treasurer
 
INVESTMENT ADVISER
 
VAN KAMPEN ASSET MANAGEMENT
1221 Avenue of the Americas
New York, New York 10020
 
CUSTODIAN
 
STATE STREET BANK
AND TRUST COMPANY
225 Franklin Street
P.O. Box 1713
Boston, Massachusetts 02110
 
TRANSFER AGENT
 
EQUISERVE TRUST COMPANY, N.A.
c/o Computershare Investor Services
P.O. Box 43010
Providence, Rhode Island 02940-3010
 
LEGAL COUNSEL
 
SKADDEN, ARPS, SLATE,
MEAGHER & FLOM LLP
333 West Wacker Drive
Chicago, Illinois 60606
 
INDEPENDENT REGISTERED
 
PUBLIC ACCOUNTING FIRM
 
DELOITTE & TOUCHE LLP
111 South Wacker Dr.
Chicago, Illinois 60606-4301
 
 For federal income tax purposes, the following information is furnished with
 respect to the distributions paid by the Trust during its taxable year ended
 October 31, 2005. The Trust designated 100.0% of the income distributions as a
 tax-exempt income distribution. In January, the Trust provides tax information
 to shareholders for the preceding calendar year.
 
*   "Interested persons" of the Trust, as defined in the Investment Company Act
    of 1940, as amended.
 
 34

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
RESULTS OF SHAREHOLDER VOTES
 
The Annual Meeting of Shareholders of the Trust was held on October 28, 2005,
where shareholders voted on the election of trustees.
 
With regard to the election of the following trustees by common shareholders of
the Trust:
 


                                                                    # OF SHARES
                                                          --------------------------------
                                                           IN FAVOR              WITHHELD
------------------------------------------------------------------------------------------
                                                                          
David C. Arch...........................................  13,646,466               212,344
Jerry D. Choate.........................................  13,613,849               244,961
Howard J Kerr...........................................  13,614,715               244,096
Suzanne H. Woolsey......................................  13,643,494               215,317

 
The other trustees of the Trust whose terms did not expire in 2005 are Rod
Dammeyer, Linda Hutton Heagy, R. Craig Kennedy, Jack E. Nelson, Hugo F.
Sonnenschein and Wayne W. Whalen.
 
A shareholder meeting has been called for January 11, 2006 to approve the
issuance of additional common shares of the Trust.
 
                                                                              35

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
TRUSTEES AND OFFICERS INFORMATION
 
The business and affairs of the Fund are managed under the direction of the
Fund's Board of Trustees and the Fund's officers appointed by the Board of
Trustees. The tables below list the trustees and executive officers of the Fund
and their principal occupations during the last five years, other directorships
held by trustees and their affiliations, if any, with Van Kampen Investments
Inc. ("Van Kampen Investments"), Van Kampen Asset Management (the "Adviser"),
Van Kampen Funds Inc. (the "Distributor"), Van Kampen Advisors Inc., Van Kampen
Exchange Corp. and Van Kampen Investor Services Inc. ("Investor Services"). The
term "Fund Complex" includes each of the investment companies advised by the
Adviser as of the date of this Annual Report. Trustees of the Funds generally
serve three year terms or until their successors are duly elected and qualified.
Officers are annually elected by the trustees.
 
INDEPENDENT TRUSTEES:
 


                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           FUND        SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                
David C. Arch (60)            Trustee      Trustee     Chairman and Chief             72       Trustee/Director/Managing
Blistex Inc.                               since 1992  Executive Officer of                    General Partner of funds
1800 Swift Drive                                       Blistex Inc., a consumer                in the Fund Complex.
Oak Brook, IL 60523                                    health care products
                                                       manufacturer. Director of
                                                       the Heartland Alliance, a
                                                       nonprofit organization
                                                       serving human needs based
                                                       in Chicago. Director of
                                                       St. Vincent de Paul
                                                       Center, a Chicago based
                                                       day care facility serving
                                                       the children of low
                                                       income families. Board
                                                       member of the Illinois
                                                       Manufacturers'
                                                       Association.

Jerry D. Choate (67)          Trustee      Trustee     Prior to January 1999,         70       Trustee/Director/Managing
33971 Selva Road                           since 2003  Chairman and Chief                      General Partner of funds
Suite 130                                              Executive Officer of the                in the Fund Complex.
Dana Point, CA 92629                                   Allstate Corporation                    Director of Amgen Inc., a
                                                       ("Allstate") and Allstate               biotechnological company,
                                                       Insurance Company. Prior                and Director of Valero
                                                       to January 1995,                        Energy Corporation, an
                                                       President and Chief                     independent refining
                                                       Executive Officer of                    company.
                                                       Allstate. Prior to August
                                                       1994, various management
                                                       positions at Allstate.

 
 36

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICERS INFORMATION continued
                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           FUND        SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Rod Dammeyer (65)             Trustee      Trustee     President of CAC, L.L.C.,      72       Trustee/Director/Managing
CAC, L.L.C.                                since 1992  a private company                       General Partner of funds
4350 LaJolla Village Drive                             offering capital                        in the Fund Complex.
Suite 980                                              investment and management               Director of Stericycle,
San Diego, CA 92122-6223                               advisory services. Prior                Inc., Ventana Medical
                                                       to February 2001, Vice                  Systems, Inc., and GATX
                                                       Chairman and Director of                Corporation, and Trustee
                                                       Anixter International,                  of The Scripps Research
                                                       Inc., a global                          Institute. Prior to
                                                       distributor of wire,                    January 2005, Trustee of
                                                       cable and communications                the University of Chicago
                                                       connectivity products.                  Hospitals and Health
                                                       Prior to July 2000,                     Systems. Prior to April
                                                       Managing Partner of                     2004, Director of
                                                       Equity Group Corporate                  TheraSense, Inc. Prior to
                                                       Investment (EGI), a                     January 2004, Director of
                                                       company that makes                      TeleTech Holdings Inc.
                                                       private investments in                  and Arris Group, Inc.
                                                       other companies.                        Prior to May 2002,
                                                                                               Director of Peregrine
                                                                                               Systems Inc. Prior to
                                                                                               February 2001, Director
                                                                                               of IMC Global Inc. Prior
                                                                                               to July 2000, Director of
                                                                                               Allied Riser
                                                                                               Communications Corp.,
                                                                                               Matria Healthcare Inc.,
                                                                                               Transmedia Networks,
                                                                                               Inc., CNA Surety, Corp.
                                                                                               and Grupo Azcarero Mexico
                                                                                               (GAM).


 
                                                                              37

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICERS INFORMATION continued
                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           FUND        SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Linda Hutton Heagy (57)       Trustee      Trustee     Managing Partner of            70       Trustee/Director/Managing
Heidrick & Struggles                       since 2003  Heidrick & Struggles, an                General Partner of funds
233 South Wacker Drive                                 executive search firm.                  in the Fund Complex.
Suite 7000                                             Trustee on the University
Chicago, IL 60606                                      of Chicago Hospitals
                                                       Board, Vice Chair of the
                                                       Board of the YMCA of
                                                       Metropolitan Chicago and
                                                       a member of the Women's
                                                       Board of the University
                                                       of Chicago. Prior to
                                                       1997, Partner of Ray &
                                                       Berndtson, Inc., an
                                                       executive recruiting
                                                       firm. Prior to 1996,
                                                       Trustee of The
                                                       International House
                                                       Board, a fellowship and
                                                       housing organization for
                                                       international graduate
                                                       students. Prior to 1995,
                                                       Executive Vice President
                                                       of ABN AMRO, N.A., a bank
                                                       holding company. Prior to
                                                       1990, Executive Vice
                                                       President of The Exchange
                                                       National Bank.

R. Craig Kennedy (53)         Trustee      Trustee     Director and President of      70       Trustee/Director/Managing
1744 R Street, NW                          since 2003  the German Marshall Fund                General Partner of funds
Washington, DC 20009                                   of the United States, an                in the Fund Complex.
                                                       independent U.S.
                                                       foundation created to
                                                       deepen understanding,
                                                       promote collaboration and
                                                       stimulate exchanges of
                                                       practical experience
                                                       between Americans and
                                                       Europeans. Formerly,
                                                       advisor to the Dennis
                                                       Trading Group Inc., a
                                                       managed futures and
                                                       option company that
                                                       invests money for
                                                       individuals and
                                                       institutions. Prior to
                                                       1992, President and Chief
                                                       Executive Officer,
                                                       Director and member of
                                                       the Investment Committee
                                                       of the Joyce Foundation,
                                                       a private foundation.

Howard J Kerr (70)            Trustee      Trustee     Prior to 1998, President       72       Trustee/Director/Managing
14 Huron Trace                             since 1992  and Chief Executive                     General Partner of funds
Galena, IL 61036                                       Officer of Pocklington                  in the Fund Complex.
                                                       Corporation, Inc., an                   Director of the Lake
                                                       investment holding                      Forest Bank & Trust.
                                                       company. Director of the
                                                       Marrow Foundation.

 
 38

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICERS INFORMATION continued
                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           FUND        SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Jack E. Nelson (69)           Trustee      Trustee     President of Nelson            70       Trustee/Director/Managing
423 Country Club Drive                     since 2003  Investment Planning                     General Partner of funds
Winter Park, FL 32789                                  Services, Inc., a                       in the Fund Complex.
                                                       financial planning
                                                       company and registered
                                                       investment adviser in the
                                                       State of Florida.
                                                       President of Nelson Ivest
                                                       Brokerage Services Inc.,
                                                       a member of the NASD,
                                                       Securities Investors
                                                       Protection Corp. and the
                                                       Municipal Securities
                                                       Rulemaking Board.
                                                       President of Nelson Sales
                                                       and Services Corporation,
                                                       a marketing and services
                                                       company to support
                                                       affiliated companies.

Hugo F. Sonnenschein (65)     Trustee      Trustee     President Emeritus and         72       Trustee/Director/Managing
1126 E. 59th Street                        since 1994  Honorary Trustee of the                 General Partner of funds
Chicago, IL 60637                                      University of Chicago and               in the Fund Complex.
                                                       the Adam Smith                          Director of Winston
                                                       Distinguished Service                   Laboratories, Inc.
                                                       Professor in the
                                                       Department of Economics
                                                       at the University of
                                                       Chicago. Prior to July
                                                       2000, President of the
                                                       University of Chicago.
                                                       Trustee of the University
                                                       of Rochester and a member
                                                       of its investment
                                                       committee. Member of the
                                                       National Academy of
                                                       Sciences, the American
                                                       Philosophical Society and
                                                       a fellow of the American
                                                       Academy of Arts and
                                                       Sciences.

Suzanne H. Woolsey, Ph.D.     Trustee      Trustee     Chief Communications           70       Trustee/Director/Managing
(63)                                       since 2003  Officer of the National                 General Partner of funds
815 Cumberstone Road                                   Academy of                              in the Fund Complex.
Harwood, MD 20776                                      Sciences/National                       Director of Fluor Corp.,
                                                       Research Council, an                    an engineering,
                                                       independent, federally                  procurement and
                                                       chartered policy                        construction
                                                       institution, from 2001 to               organization, since
                                                       November 2003 and Chief                 January 2004 and Director
                                                       Operating Officer from                  of Neurogen Corporation,
                                                       1993 to 2001. Director of               a pharmaceutical company,
                                                       the Institute for Defense               since January 1998.
                                                       Analyses, a federally
                                                       funded research and
                                                       development center,
                                                       Director of the German
                                                       Marshall Fund of the
                                                       United States, Director
                                                       of the Rocky Mountain
                                                       Institute and Trustee of
                                                       Colorado College. Prior
                                                       to 1993, Executive
                                                       Director of the
                                                       Commission on Behavioral
                                                       and Social Sciences and
                                                       Education at the National
                                                       Academy of
                                                       Sciences/National
                                                       Research Council. From
                                                       1980 through 1989,
                                                       Partner of Coopers &
                                                       Lybrand.

 
                                                                              39

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
TRUSTEE AND OFFICERS INFORMATION continued
 
INTERESTED TRUSTEE:*
 


                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INTERESTED TRUSTEE            FUND        SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                
Wayne W. Whalen* (66)         Trustee      Trustee     Partner in the law firm        72       Trustee/Director/Managing
333 West Wacker Drive                      since 1992  of Skadden, Arps, Slate,                General Partner of funds
Chicago, IL 60606                                      Meagher & Flom LLP, legal               in the Fund Complex.
                                                       counsel to funds in the                 Director of the Abraham
                                                       Fund Complex.                           Lincoln Presidential
                                                                                               Library Foundation.

 
*   Mr. Whalen is an "interested person" (within the meaning of Section 2(a)(19)
    of the 1940 Act) of certain funds in the Fund Complex by reason of he and
    his firm currently providing legal services as legal counsel to such funds
    in the Fund Complex.
 
 40

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
TRUSTEE AND OFFICERS INFORMATION continued
 
OFFICERS:
 


                                                        TERM OF
                                                       OFFICE AND
                                    POSITION(S)        LENGTH OF
NAME, AGE AND                        HELD WITH            TIME     PRINCIPAL OCCUPATION(S)
ADDRESS OF OFFICER                     FUND              SERVED    DURING PAST 5 YEARS
                                                          
Ronald E. Robison (66)        President and            Officer     President of funds in the Fund Complex since September 2005
1221 Avenue of the Americas   Principal Executive      since 2003  and Principal Executive Officer of funds in the Fund Complex
New York, NY 10020            Officer                              since May 2003. Managing Director of Morgan Stanley and
                                                                   Morgan Stanley & Co. Incorporated. Managing Director and
                                                                   Director of Morgan Stanley Investment Management Inc. Chief
                                                                   Administrative Officer, Managing Director and Director of
                                                                   Morgan Stanley Investment Advisors Inc. and Morgan Stanley
                                                                   Services Company Inc. Managing Director and Director of
                                                                   Morgan Stanley Distributors Inc. and Morgan Stanley
                                                                   Distribution Inc. Chief Executive Officer and Director of
                                                                   Morgan Stanley Trust. Executive Vice President and Principal
                                                                   Executive Officer of the Institutional and Retail Morgan
                                                                   Stanley Funds. Director of Morgan Stanley SICAV. Previously
                                                                   Chief Global Operations Officer of Morgan Stanley Investment
                                                                   Management Inc. and Executive Vice President of funds in the
                                                                   Fund Complex from May 2003 to September 2005.

Joseph J. McAlinden (62)      Executive Vice           Officer     Managing Director and Chief Investment Officer of Morgan
1221 Avenue of the Americas   President and Chief      since 2002  Stanley Investment Advisors Inc., and Morgan Stanley
New York, NY 10020            Investment Officer                   Investment Management Inc. and Director of Morgan Stanley
                                                                   Trust for over 5 years. Executive Vice President and Chief
                                                                   Investment Officer of funds in the Fund Complex. Managing
                                                                   Director and Chief Investment Officer of Van Kampen
                                                                   Investments, the Adviser and Van Kampen Advisors Inc. since
                                                                   December 2002.

Amy R. Doberman (43)          Vice President           Officer     Managing Director and General Counsel, U.S. Investment
1221 Avenue of the Americas                            since 2004  Management; Managing Director of Morgan Stanley Investment
New York, NY 10020                                                 Management Inc., Morgan Stanley Investment Advisers Inc. and
                                                                   the Adviser. Vice President of the Morgan Stanley
                                                                   Institutional and Retail Funds since July 2004 and Vice
                                                                   President of funds in the Fund Complex since August 2004.
                                                                   Previously, Managing Director and General Counsel of
                                                                   Americas, UBS Global Asset Management from July 2000 to July
                                                                   2004 and General Counsel of Aeltus Investment Management,
                                                                   Inc. from January 1997 to July 2000.

Stefanie V. Chang (39)        Vice President           Officer     Executive Director of Morgan Stanley Investment Management
1221 Avenue of the Americas   and Secretary            since 2003  Inc. Vice President and Secretary of funds in the Fund
New York, NY 10020                                                 Complex.

 
                                                                              41

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICERS INFORMATION continued
                                                        TERM OF
                                                       OFFICE AND
                                    POSITION(S)        LENGTH OF
NAME, AGE AND                        HELD WITH            TIME     PRINCIPAL OCCUPATION(S)
ADDRESS OF OFFICER                     FUND              SERVED    DURING PAST 5 YEARS
                                                          

John L. Sullivan (50)         Chief Compliance         Officer     Chief Compliance Officer of funds in the Fund Complex since
1 Parkview Plaza              Officer                  since 1996  August 2004. Prior to August 2004, Director and Managing
Oakbrook Terrace, IL 60181                                         Director of Van Kampen Investments, the Adviser, Van Kampen
                                                                   Advisors Inc. and certain other subsidiaries of Van Kampen
                                                                   Investments, Vice President, Chief Financial Officer and
                                                                   Treasurer of funds in the Fund Complex and head of Fund
                                                                   Accounting for Morgan Stanley Investment Management Inc.
                                                                   Prior to December 2002, Executive Director of Van Kampen
                                                                   Investments, the Adviser and Van Kampen Advisors Inc.

Phillip G. Goff (42)          Chief Financial Officer  Officer     Executive Director of Morgan Stanley Investment Management
1 Parkview Plaza              and Treasurer            since 2005  Inc. since June 2005. Chief Financial Officer and Treasurer
Oakbrook Terrace, IL 60181                                         of funds in the Fund Complex since August 2005. Prior to
                                                                   June 2005, Vice President and Chief Financial Officer of
                                                                   Enterprise Capital Management, Inc., an investment holding
                                                                   company.

 
In accordance with Section 303A.12(a) of the New York Stock Exchange Listed
Company Manual, the Trust's Chief Executive Officer has certified to the New
York Stock Exchange that, as of July 18, 2005, he was not aware of any violation
by the Trust of NYSE corporate governance listing standards.
 
The certifications by the Fund's principal executive officer and principal
financial officer required by Rule 30a-2 under the 1940 Act were filed with the
Trust's report to the SEC on Form N-CSR and are available on the Securities and
Exchange Commission's web site at http://www.sec.gov.
 
 42

 
  Van Kampen Municipal Opportunity Trust
 
  An Important Notice Concerning Our U.S. Privacy Policy
  

  
  We are required by federal law to provide you with a copy of our Privacy
  Policy annually.
 
  The following Policy applies to current and former individual clients of Van
  Kampen Investments Inc., Van Kampen Asset Management, Van Kampen Advisors
  Inc., Van Kampen Funds Inc., Van Kampen Investor Services Inc. and Van
  Kampen Exchange Corp., as well as current and former individual investors in
  Van Kampen mutual funds, unit investment trusts, and related companies.
 
  This Policy is not applicable to partnerships, corporations, trusts or other
  non-individual clients or account holders, nor is this Policy applicable to
  individuals who are either beneficiaries of a trust for which we serve as
  trustee or participants in an employee benefit plan administered or advised
  by us. This Policy is, however, applicable to individuals who select us to
  be a custodian of securities or assets in individual retirement accounts,
  401(k) accounts, 529 Educational Savings Accounts, accounts subject to the
  Uniform Gifts to Minors Act, or similar accounts.
 
  Please note that we may amend this Policy at any time, and will inform you
  of any changes to this Policy as required by law.
 
  WE RESPECT YOUR PRIVACY
 
  We appreciate that you have provided us with your personal financial
  information. We strive to maintain the privacy of such information while we
  help you achieve your financial objectives. This Policy describes what
  non-public personal information we collect about you, why we collect it, and
  when we may share it with others.
 
  We hope this Policy will help you understand how we collect and share
  non-public personal information that we gather about you. Throughout this
  Policy, we refer to the non-public information that personally identifies
  you or your accounts as "personal information."
 
  1. WHAT PERSONAL INFORMATION DO WE COLLECT ABOUT YOU?
 
  To serve you better and manage our business, it is important that we collect
  and maintain accurate information about you. We may obtain this information
  from applications and other forms you submit to us, from your dealings with
  us, from consumer reporting agencies, from our Web sites and from third
  parties and other sources.
 
                                                      (continued on next page)

  Van Kampen Municipal Opportunity Trust
 
  An Important Notice Concerning Our U.S. Privacy Policy  continued
 
  For example:
 
   --  We may collect information such as your name, address, e-mail address,
       telephone/fax numbers, assets, income and investment objectives through
       applications and other forms you submit to us.
 
   --  We may obtain information about account balances, your use of
       account(s) and the types of products and services you prefer to receive
       from us through your dealings and transactions with us and other
       sources.
 
   --  We may obtain information about your creditworthiness and credit
       history from consumer reporting agencies.
 
   --  We may collect background information from and through third-party
       vendors to verify representations you have made and to comply with
       various regulatory requirements.
 
   --  If you interact with us through our public and private Web sites, we
       may collect information that you provide directly through online
       communications (such as an e-mail address). We may also collect
       information about your Internet service provider, your domain name,
       your computer's operating system and Web browser, your use of our Web
       sites and your product and service preferences, through the use of
       "cookies." "Cookies" recognize your computer each time you return to
       one of our sites, and help to improve our sites' content and
       personalize your experience on our sites by, for example, suggesting
       offerings that may interest you. Please consult the Terms of Use of
       these sites for more details on our use of cookies.
 
  2. WHEN DO WE DISCLOSE PERSONAL INFORMATION WE COLLECT ABOUT YOU?
 
  To provide you with the products and services you request, to serve you
  better and to manage our business, we may disclose personal information we
  collect about you to our affiliated companies and to non-affiliated third
  parties as required or permitted by law.
 
  A. INFORMATION WE DISCLOSE TO OUR AFFILIATED COMPANIES. We do not disclose
  personal information that we collect about you to our affiliated companies
  except to enable them to provide services on our behalf or as otherwise
  required or permitted by law.
 
  B. INFORMATION WE DISCLOSE TO THIRD PARTIES. We do not disclose personal
  information that we collect about you to non-affiliated third parties except
  to enable them to provide services on our behalf, to perform joint marketing
  agreements with
 
                                                           (continued on back)

  Van Kampen Municipal Opportunity Trust
 
  An Important Notice Concerning Our U.S. Privacy Policy  continued
 
  other financial institutions, or as otherwise required or permitted by law.
  For example, some instances where we may disclose information about you to
  non-affiliated third parties include: for servicing and processing
  transactions, to offer our own products and services, to protect against
  fraud, for institutional risk control, to respond to judicial process or to
  perform services on our behalf. When we share personal information with
  these companies, they are required to limit their use of personal
  information to the particular purpose for which it was shared and they are
  not allowed to share personal information with others except to fulfill that
  limited purpose.
 
  3. HOW DO WE PROTECT THE SECURITY AND CONFIDENTIALITY OF PERSONAL
  INFORMATION WE COLLECT ABOUT YOU?
 
  We maintain physical, electronic and procedural security measures to help
  safeguard the personal information we collect about you. We have internal
  policies governing the proper handling of client information. Third parties
  that provide support or marketing services on our behalf may also receive
  personal information, and we require them to adhere to confidentiality
  standards with respect to such information.
 
                                                         Van Kampen Funds Inc.
                                                              1 Parkview Plaza
                                                                 P.O. Box 5555
                                               Oakbrook Terrace, IL 60181-5555
 
                                                             www.vankampen.com
 
                  Copyright (C)2005 Van Kampen Funds Inc. All rights reserved.
                                                             Member NASD/SIPC.
 
                                                                  VMO ANR 1/06
  (VAN KAMPEN INVESTMENTS SHINE LOGO)                       RN05-03015P-Y10/05


Item 2.  Code of Ethics.

(a) The Trust has adopted a code of ethics (the "Code of Ethics") that applies
to its principal executive officer, principal financial officer, principal
accounting officer or controller, or persons performing similar functions,
regardless of whether these individuals are employed by the Trust or a third
party.

(b) No information need be disclosed pursuant to this paragraph.

(c) The Trust has amended its Code of Ethics during the period covered by the
shareholder report presented in Item 1 hereto to delete from the end of the
following paragraph on page 2 of the Code the phrase "to the detriment of the
Fund.":

"Each Covered Officer must not use his personal influence or personal
relationship improperly to influence investment decisions or financial reporting
by the Fund whereby the Covered Officer would benefit personally (directly or
indirectly)."

Further, due to personnel changes at the Adviser, the list of Covered Officers
set forth in Exhibit B and the General Counsel designee to whom questions about
the application of the Code should be referred in Exhibit C were amended during
the period. Exhibit B was then amended again in March 2005 and a third time in
August 2005 and a fourth time in September 2005. All four editions of Exhibit B
are attached. Additionally, Exhibit B was amended to remove Mitchell M. Merin as
a covered officer.

(d) Not applicable.

(e) Not applicable.

(f)

      (1)   The Trust's Code of Ethics is attached hereto as Exhibit 12A.

      (2)   Not applicable.

      (3)   Not applicable.

Item 3.  Audit Committee Financial Expert.

The Trust's Board of Trustees has determined that it has two "audit committee
financial experts" serving on its audit committee, each of whom are
"independent" Trustees : Jerry Choate and R. Craig Kennedy. Under applicable
securities laws, a person who is determined to be an audit committee financial
expert will not be deemed an "expert" for any purpose, including without
limitation for the purposes of Section 11 of the Securities Act of 1933, as a
result of being designated or identified as an audit committee financial expert.
The designation or identification of a person as an audit committee financial
expert does not impose on such person any duties, obligations, or liabilities
that are greater than the duties, obligations, and liabilities imposed on such
person as a member of the audit committee and Board of Trustees in the absence
of such designation or identification.




Item 4.  Principal Accountant Fees and Services.

(a)(b)(c)(d) and (g). Based on fees billed for the periods shown:



                                                   REGISTRANT             COVERED ENTITIES(1)
                                                                    
2005

AUDIT FEES................................          $ 32,350                    N/A

NON-AUDIT FEES
  AUDIT-RELATED FEES......................          $    400                  $  321,000(2)
  TAX FEES................................          $  1,600(3)               $        0
  ALL OTHER FEES..........................          $      0                  $        0
TOTAL NON-AUDIT FEES......................          $  2,000                  $  321,000

TOTAL.....................................          $ 34,350                  $  321,000




                                                   REGISTRANT             COVERED ENTITIES(1)
                                                                    
2004

AUDIT FEES................................           $ 29,480                   N/A

NON-AUDIT FEES
  AUDIT-RELATED FEES......................           $    370                 $ 198,000(2)
  TAX FEES................................           $  1,550(3)              $       0
  ALL OTHER FEES..........................           $      0                 $       0
TOTAL NON-AUDIT FEES......................           $  1,920                 $ 198,000

TOTAL.....................................           $ 31,400                 $ 198,000


N/A- Not applicable, as not required by Item 4.

(1)   Covered Entities include the Adviser (excluding sub-advisors) and any
      entity controlling, controlled by or under common control with the Adviser
      that provides ongoing services to the Registrant.

(2)   Audit-Related Fees represent assurance and related services provided that
      are reasonably related to the performance of the audit of the financial
      statements of the Covered Entities' and funds advised by the Adviser or
      its affiliates, specifically attestation services provided in connection
      with a SAS 70 Report.

(3)   Tax Fees represent tax advice and compliance services provided in
      connection with the review of the Registrant's tax.



(e)(1) The audit committee's pre-approval policies and procedures are as
follows:

                             JOINT AUDIT COMMITTEE
                          AUDIT AND NON-AUDIT SERVICES
                       PRE-APPROVAL POLICY AND PROCEDURES
                                     OF THE
                                VAN KAMPEN FUNDS

              AS ADOPTED JULY 23, 2003 AND AMENDED MAY 26, 2004(1)

1.    STATEMENT OF PRINCIPLES

      The Audit Committee of the Board is required to review and, in its sole
discretion, pre-approve all Covered Services to be provided by the Independent
Auditors to the Fund and Covered Entities in order to assure that services
performed by the Independent Auditors do not impair the auditor's independence
from the Fund.(2)

      The SEC has issued rules specifying the types of services that an
independent auditor may not provide to its audit client, as well as the audit
committee's administration of the engagement of the independent auditor. The
SEC's rules establish two different approaches to pre-approving services, which
the SEC considers to be equally valid. Proposed services either: may be
pre-approved without consideration of specific case-by-case services by the
Audit Committee ("general pre-approval"); or require the specific pre-approval
of the Audit Committee ("specific pre-approval"). The Audit Committee believes
that the combination of these two approaches in this Policy will result in an
effective and efficient procedure to pre-approve services performed by the
Independent Auditors. As set forth in this Policy, unless a type of service has
received general pre-approval, it will require specific pre-approval by the
Audit Committee (or by any member of the Audit Committee to which pre-approval
authority has been delegated) if it is to be provided by the Independent
Auditors. Any proposed services exceeding pre-approved cost levels or budgeted
amounts will also require specific pre-approval by the Audit Committee.

      For both types of pre-approval, the Audit Committee will consider whether
such services are consistent with the SEC's rules on auditor independence. The
Audit Committee will also consider whether the Independent Auditors are best
positioned to provide the most effective and efficient services, for reasons
such as its familiarity with the Fund's business, people, culture, accounting
systems, risk profile and other factors, and whether the service might enhance
the Fund's ability to manage or control risk or improve audit quality. All such
factors will be considered as a whole, and no one factor should necessarily be
determinative.

      The Audit Committee is also mindful of the relationship between fees for
audit and non-audit services in deciding whether to pre-approve any such
services and may determine for each fiscal year, the appropriate ratio between
the total amount of fees for Audit, Audit-related and Tax services for the Fund
(including any Audit-related or Tax service fees for Covered Entities that were
subject to pre-approval), and the total amount of fees for certain permissible
non-audit services classified as All Other services for the Fund (including any
such services for Covered Entities subject to pre-approval).

      The appendices to this Policy describe the Audit, Audit-related, Tax and
All Other services that have the general pre-approval of the Audit Committee.
The term of any general pre-approval is 12 months from the date of pre-approval,
unless the Audit Committee considers and provides a different period and states
otherwise. The Audit Committee will annually review and pre-approve the services
that may be provided by the Independent Auditors without obtaining specific
pre-approval

--------------
(1)   This Joint Audit Committee Audit and Non-Audit Services Pre-Approval
      Policy and Procedures (the "Policy"), amended as of the date above,
      supercedes and replaces all prior versions that may have been amended from
      time to time.

(2)   Terms used in this Policy and not otherwise defined herein shall have the
      meanings as defined in the Joint Audit Committee Charter.



from the Audit Committee. The Audit Committee will add to or subtract from the
list of general pre-approved services from time to time, based on subsequent
determinations.

      The purpose of this Policy is to set forth the policy and procedures by
which the Audit Committee intends to fulfill its responsibilities. It does not
delegate the Audit Committee's responsibilities to pre-approve services
performed by the Independent Auditors to management.

      The Fund's Independent Auditors have reviewed this Policy and believes
that implementation of the Policy will not adversely affect the Independent
Auditors' independence.

2.    DELEGATION

      As provided in the Act and the SEC's rules, the Audit Committee may
delegate either type of pre-approval authority to one or more of its members.
The member to whom such authority is delegated must report, for informational
purposes only, any pre-approval decisions to the Audit Committee at its next
scheduled meeting.

3.    AUDIT SERVICES

      The annual Audit services engagement terms and fees are subject to the
specific pre-approval of the Audit Committee. Audit services include the annual
financial statement audit and other procedures required to be performed by the
Independent Auditors to be able to form an opinion on the Fund's financial
statements. These other procedures include information systems and procedural
reviews and testing performed in order to understand and place reliance on the
systems of internal control, and consultations relating to the audit. The Audit
Committee will monitor the Audit services engagement as necessary, but no less
than on a quarterly basis, and will also approve, if necessary, any changes in
terms, conditions and fees resulting from changes in audit scope, Fund structure
or other items.

      In addition to the annual Audit services engagement approved by the Audit
Committee, the Audit Committee may grant general pre-approval to other Audit
services, which are those services that only the Independent Auditors reasonably
can provide. Other Audit services may include statutory audits and services
associated with SEC registration statements (on Forms N-1A, N-2, N-3, N-4,
etc.), periodic reports and other documents filed with the SEC or other
documents issued in connection with securities offerings.

      The Audit Committee has pre-approved the Audit services in Appendix B.1.
All other Audit services not listed in Appendix B.1 must be specifically
pre-approved by the Audit Committee (or by any member of the Audit Committee to
which pre-approval has been delegated).

4.    AUDIT-RELATED SERVICES

      Audit-related services are assurance and related services that are
reasonably related to the performance of the audit or review of the Fund's
financial statements or, to the extent they are Covered Services, the Covered
Entities' financial statements, or that are traditionally performed by the
Independent Auditors. Because the Audit Committee believes that the provision of
Audit-related services does not impair the independence of the auditor and is
consistent with the SEC's rules on auditor independence, the Audit Committee may
grant general pre-approval to Audit-related services. Audit-related services
include, among others, accounting consultations related to accounting, financial
reporting or disclosure matters not classified as "Audit services"; assistance
with understanding and implementing new accounting and financial reporting
guidance from rulemaking authorities; agreed-upon or expanded audit procedures
related to accounting and/or billing records required to respond to or comply
with financial, accounting or regulatory reporting matters; and assistance with
internal control reporting requirements under Forms N-SAR and/or N-CSR.



      The Audit Committee has pre-approved the Audit-related services in
Appendix B.2. All other Audit-related services not listed in Appendix B.2 must
be specifically pre-approved by the Audit Committee (or by any member of the
Audit Committee to which pre-approval has been delegated).

5.    TAX SERVICES

      The Audit Committee believes that the Independent Auditors can provide Tax
services to the Fund and, to the extent they are Covered Services, the Covered
Entities, such as tax compliance, tax planning and tax advice without impairing
the auditor's independence, and the SEC has stated that the Independent Auditors
may provide such services. Hence, the Audit Committee believes it may grant
general pre-approval to those Tax services that have historically been provided
by the Independent Auditors, that the Audit Committee has reviewed and believes
would not impair the independence of the Independent Auditors, and that are
consistent with the SEC's rules on auditor independence. The Audit Committee
will not permit the retention of the Independent Auditors in connection with a
transaction initially recommended by the Independent Auditors, the sole business
purpose of which may be tax avoidance and the tax treatment of which may not be
supported in the Internal Revenue Code and related regulations. The Audit
Committee will consult with Director of Tax or outside counsel to determine that
the tax planning and reporting positions are consistent with this policy.

      Pursuant to the preceding paragraph, the Audit Committee has pre-approved
the Tax Services in Appendix B.3. All Tax services involving large and complex
transactions not listed in Appendix B.3 must be specifically pre-approved by the
Audit Committee (or by any member of the Audit Committee to which pre-approval
has been delegated), including tax services proposed to be provided by the
Independent Auditors to any executive officer or trustee/director/managing
general partner of the Fund, in his or her individual capacity, where such
services are paid for by the Fund (generally applicable only to internally
managed investment companies).

6.    ALL OTHER SERVICES

      The Audit Committee believes, based on the SEC's rules prohibiting the
Independent Auditors from providing specific non-audit services, that other
types of non-audit services are permitted. Accordingly, the Audit Committee
believes it may grant general pre-approval to those permissible non-audit
services classified as All Other services that it believes are routine and
recurring services, would not impair the independence of the auditor and are
consistent with the SEC's rules on auditor independence.

      The Audit Committee has pre-approved the All Other services in Appendix
B.4. Permissible All Other services not listed in Appendix B.4 must be
specifically pre-approved by the Audit Committee (or by any member of the Audit
Committee to which pre-approval has been delegated).

      A list of the SEC's prohibited non-audit services is attached to this
policy as Appendix B.5. The SEC's rules and relevant guidance should be
consulted to determine the precise definitions of these services and the
applicability of exceptions to certain of the prohibitions.

7.    PRE-APPROVAL FEE LEVELS OR BUDGETED AMOUNTS

      Pre-approval fee levels or budgeted amounts for all services to be
provided by the Independent Auditors will be established annually by the Audit
Committee. Any proposed services exceeding these levels or amounts will require
specific pre-approval by the Audit Committee. The Audit Committee is mindful of
the overall relationship of fees for audit and non-audit services in determining
whether to pre-approve any such services. For each fiscal year, the Audit
Committee may determine the appropriate ratio between the total amount of fees
for Audit, Audit-related, and Tax services for the Fund (including any
Audit-related or Tax services fees for Covered Entities subject to
pre-approval), and the total amount of fees for certain permissible non-audit
services classified as All Other services for the Fund (including any such
services for Covered Entities subject to pre-approval).



8.    PROCEDURES

      All requests or applications for services to be provided by the
Independent Auditors that do not require specific approval by the Audit
Committee will be submitted to the Fund's Chief Financial Officer and must
include a detailed description of the services to be rendered. The Fund's Chief
Financial Officer will determine whether such services are included within the
list of services that have received the general pre-approval of the Audit
Committee. The Audit Committee will be informed on a timely basis of any such
services rendered by the Independent Auditors. Requests or applications to
provide services that require specific approval by the Audit Committee will be
submitted to the Audit Committee by both the Independent Auditors and the Fund's
Chief Financial Officer, and must include a joint statement as to whether, in
their view, the request or application is consistent with the SEC's rules on
auditor independence.

      The Audit Committee has designated the Fund's Chief Financial Officer to
monitor the performance of all services provided by the Independent Auditors and
to determine whether such services are in compliance with this Policy. The
Fund's Chief Financial Officer will report to the Audit Committee on a periodic
basis on the results of its monitoring. A sample report is included as Appendix
B.7. Both the Fund's Chief Financial Officer and management will immediately
report to the chairman of the Audit Committee any breach of this Policy that
comes to the attention of the Fund's Chief Financial Officer or any member of
management.

9.    ADDITIONAL REQUIREMENTS

      The Audit Committee has determined to take additional measures on an
annual basis to meet its responsibility to oversee the work of the Independent
Auditors and to assure the auditor's independence from the Fund, such as
reviewing a formal written statement from the Independent Auditors delineating
all relationships between the Independent Auditors and the Fund, consistent with
Independence Standards Board No. 1, and discussing with the Independent Auditors
its methods and procedures for ensuring independence.

10.   COVERED ENTITIES

      Covered Entities include the Fund's investment adviser(s) and any entity
controlling, controlled by or under common control with the Fund's investment
adviser(s) that provides ongoing services to the Fund(s). Beginning with
non-audit service contracts entered into on or after May 6, 2003, the Fund's
audit committee must pre-approve non-audit services provided not only to the
Fund but also to the Covered Entities if the engagements relate directly to the
operations and financial reporting of the Fund. This list of Covered Entities
would include:

      -     Van Kampen Investments Inc.

      -     Van Kampen Asset Management

      -     Van Kampen Advisors Inc.

      -     Van Kampen Funds Inc.

      -     Van Kampen Investor Services Inc.

      -     Morgan Stanley Investment Management Inc.

      -     Morgan Stanley Trust Company

      -     Morgan Stanley Investment Management Ltd.

      -     Morgan Stanley Investment Management Company

      -     Morgan Stanley Asset & Investment Trust Management Company Ltd.

(e)(2) Beginning with non-audit service contracts entered into on or after May
6, 2003, the audit committee also is required to pre-approve services to Covered
Entities to the extent that the services



are determined to have a direct impact on the operations or financial reporting
of the Registrant. 100% of such services were pre-approved by the audit
committee pursuant to the Audit Committee's pre-approval policies and procedures
(included herein).

(f) Not applicable.

(g) See table above.

(h) The audit committee of the Board of Trustees has considered whether the
provision of services other than audit services performed by the auditors to the
Registrant and Covered Entities is compatible with maintaining the auditors'
independence in performing audit services.

Item 5. Audit Committee of Listed Registrants.

(a) The Trust has a separately-designated standing audit committee established
in accordance with Section 3(a)(58)(A) of the Exchange Act whose members are: R.
Craig Kennedy, Jerry Choate and Rod Dammeyer.

(b) Not applicable.

Item 6.  Schedule of Investments.

Please refer to Item #1.

Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End
Management Investment Companies.

The Trust invests in exclusively non-voting securities and therefore this item
is not applicable to the Trust.

Item 8. Portfolio Managers of Closed-End Management Investment Companies.

Applicable only for reports covering fiscal years on or after December 31, 2005.

Item 9. Purchase of Equity Securities by Closed-End Management Investment
Company and Affiliated Purchasers.

Not Applicable.

Item 10. Submission of Matters to a Vote of Security Holders.

Not Applicable.

Item 11. Controls and Procedures

(a) The Trust's principal executive officer and principal financial officer have
concluded that the Trust's disclosure controls and procedures are sufficient to
ensure that information required to be disclosed by the Trust in this Form N-CSR
was recorded, processed, summarized and reported within the time periods
specified in the Securities and Exchange Commission's rules and forms, based
upon such officers' evaluation of these controls and procedures as of a date
within 90 days of the filing date of the report.

(b) There were no changes in the registrant's internal control over financial
reporting that occurred during the registrant's most recent fiscal half-year
(the registrant's second fiscal half-year in the case of an annual report) that
has materially affected, or is reasonably likely to materially affect, the
registrant's internal control over financial reporting.

Item 12. Exhibits.

(a) The Code of Ethics for Principal Executive and Senior Financial Officers is
attached hereto.

(b)(1) A certification for the Principal Executive Officer of the registrant is
attached hereto as part of EX-99.CERT. 

(b)(2) A certification for the Principal Financial Officer of the registrant is
attached hereto as part of EX-99.CERT.



SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized. 

(Registrant) Van Kampen Municipal Opportunity Trust

By: /s/ Ronald E. Robison
    -------------------------
Name: Ronald E. Robison
Title: Principal Executive Officer
Date: December 19, 2005

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, this report has been signed by the following
persons on behalf of the registrant and in the capacities and on the dates
indicated.

By: /s/ Ronald E. Robison
    -----------------------------
Name: Ronald E. Robison
Title: Principal Executive Officer
Date: December 19, 2005

By: /s/ Phillip G. Goff
    -----------------------------
Name: Phillip G. Goff
Title: Principal Financial Officer
Date: December 19, 2005