FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * LYNCH PATRICK B   2. Issuer Name and Ticker or Trading Symbol CME GROUP INC. [CME] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 20 S. WACKER DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 11/21/2008 (Street) CHICAGO, IL 60606 4. If Amendment, Date Original Filed(Month/Day/Year) 11/25/2008 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock Class A 11/21/2008   P(1)   600 A $ 164.84 (2) 5,838 D   Common Stock Class A 11/21/2008   P(1)   300 A $ 165.34 (2) 6,138 D   Common Stock Class A 11/21/2008   P(1)   300 A $ 167.9 (2) 6,438 D   Common Stock Class A 11/21/2008   P(1)   990 A $ 166.62 (2) 7,428 D   Common Stock Class A 11/21/2008   P(1)   600 A $ 171.13 (2) 8,028 D   Common Stock Class A 11/21/2008   P(1)   1,100 A $ 174.55 (2) 9,128 D   Common Stock Class A 11/21/2008   P(1)   500 A $ 173.16 (2) 9,628 D   Common Stock Class A 11/21/2008   P(1)   700 A $ 170.38 (2) 10,328 D   Common Stock Class A 11/21/2008   P(1)   800 A $ 168.58 (2) 11,128 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LYNCH PATRICK B 20 S. WACKER DRIVE CHICAGO, IL 60606	X

Signatures

By: Margaret C. Austin For: Patrick B. Lynch		12/02/2008
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	This amendment is being filed to correct the original Form 4 for Mr. Lynch's transactions occurring on November 21, 2008, which was filed on November 25, 2008. The original Form 4 incorrectly designated Mr. Lynch's transactions as sales. On November 21, 2008, Mr. Lynch purchased a total of 5,890 shares of CME Group Class A common stock representing a value of approximately $1 million.
(2)	On November 21, 2008, Mr. Lynch purchased an aggregate of 5,890 shares of CME Group Class A common stock. For reporting purposes, the purchase prices within a $1 range have been aggregated and the weighted average has been reported. The price ranges were: $164.80 to $164.89; $165.30 to $165.41; $166.32 to $166.85; $167.90; $168.41 to $168.85; $170.05 to $170.51; $171.11 to $171.15; $173.12 to $173.19; $174.06 to $174.93. The Company maintains a record of the transactions and copies will be provided upon request.

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