Edgar Filing: Interactive Brokers Group, Inc.

ibkr_10q2q2011.htm

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

x			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2011.

o			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number: 001-33440

INTERACTIVE BROKERS GROUP, INC.

(Exact name of registrant as specified in its charter)

Delaware		30-0390693
(State or other jurisdiction		(I.R.S. Employer
of incorporation or organization)		Identification No.)

One Pickwick Plaza

Greenwich, Connecticut 06830

(Address of principal executive office)

(203) 618-5800

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o.

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer” and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer x	Accelerated filer o	Non-accelerated filer o	Smaller reporting company o
		(Do not check if a smaller
		reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x.

As of August 9, 2011, there were 45,565,484 shares of the issuer’s Class A common stock, par value $0.01 per share, outstanding and 100 shares of the issuer’s Class B common stock, par value $0.01 per share, outstanding.

INTERACTIVE BROKERS GROUP, INC.

QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED JUNE 30, 2011

Table of Contents

		Page
		No.
PART I:	FINANCIAL INFORMATION

Item 1:	Financial Statements (Unaudited)	3

	Condensed Consolidated Statements of Financial Condition	4

	Condensed Consolidated Statements of Comprehensive Income	5

	Condensed Consolidated Statements of Cash Flows	6

	Condensed Consolidated Statement of Changes in Equity	7

	Notes to Condensed Consolidated Financial Statements	8

Item 2:	Management’s Discussion and Analysis of Financial Condition and Results of Operations	29

Item 3:	Quantitative and Qualitative Disclosures About Market Risk	50

Item 4:	Controls and Procedures	52

PART II:	OTHER INFORMATION

Item 1:	Legal Proceedings	53

Item 1A:	Risk Factors	53

Item 2:	Unregistered Sales of Equity Securities and Use of Proceeds	53

Item 3:	Defaults upon Senior Securities	53

Item 5:	Other Information	53

Item 6:	Exhibits	54

SIGNATURES		55

Financial Statements Introductory Note

Interactive Brokers Group, Inc. (“IBG, Inc.” or the “Company”) is a holding company whose primary asset is its ownership of approximately 11.0% of the membership interests of IBG LLC (the “Group”). See Notes 1 and 4 to the unaudited condensed consolidated financial statements for further discussion of the Company’s capital and ownership structure.

We are an automated global electronic broker and market maker specializing in routing orders and executing and processing trades in securities, futures, foreign exchange instruments, bonds and mutual funds on more than 90 electronic exchanges and trading venues around the world. In the U.S., our business is conducted from our headquarters in Greenwich, Connecticut and from Chicago, Illinois and Jersey City, New Jersey. Abroad, we conduct business through offices located in Canada, England, Switzerland, Hong Kong, India, Australia and Japan. At June 30, 2011 we had 857 employees worldwide.

Interactive Brokers Group, Inc. and Subsidiaries
Condensed Consolidated Statements of Financial Condition
(Unaudited)
					June 30,			December 31,
(in thousands, except share data)					2011			2010
Assets
Cash and cash equivalents				$	1,422,935		$	1,354,219
Cash and securities - segregated for regulatory purposes					8,807,874			7,888,093
Securities borrowed					3,215,552			3,292,345
Securities purchased under agreements to resell					304,278			336,299
Trading assets, at fair value:
	Financial instruments owned				4,125,305			5,420,929
	Financial instruments owned and pledged as collateral				1,978,158			2,001,488
					6,103,463			7,422,417
Other receivables:
	Customers, less allowance for doubtful accounts of $20,746 and
		$17,871 at June 30, 2011 and December 31, 2010			9,320,028			6,973,033
	Brokers, dealers and clearing organizations				947,365			732,869
	Receivable from affiliate				581			1,185
	Interest				22,774			18,502
					10,290,748			7,725,589
Other assets					495,405			479,806
Total assets				$	30,640,255		$	28,498,768

Liabilities and equity
Liabilities:
Trading liabilities - financial instruments sold but not yet purchased,
	at fair value			$	4,939,976		$	6,125,224
Securities loaned					1,757,467			1,659,611
Short-term borrowings					42,964			187,380
Other payables:
	Customers				18,158,887			15,060,479
	Brokers, dealers and clearing organizations				283,370			248,685
	Payable to affiliate				284,862			284,860
	Accounts payable, accrued expenses and other liabilities				399,779			409,757
	Interest				9,107			7,682
					19,136,005			16,011,463

Senior notes payable					178,300			194,603
Senior secured credit facility					-			100,000
					26,054,712			24,278,281

Commitments, contingencies and guarantees

Equity:
Stockholders’ equity:
	Common stock, $0.01 par value per share:
	Class A – Authorized - 1,000,000,000, Issued - 50,298,024
		Outstanding – 43,581,860 and 42,231,551 shares at June 30, 2011
		and December 31, 2010			503			503
	Class B – Authorized, Issued and Outstanding – 100 shares
		at June 30, 2011 and December 31, 2010			-			-
	Additional paid-in capital				522,434			535,630
	Retained earnings				113,958			92,504
	Accumulated other comprehensive income, net of income taxes of
		$15,251 and $12,284 at June 30, 2011 and December 31, 2010			26,242			21,137
	Treasury stock, at cost, 6,716,164 and 8,066,473 shares
		at June 30, 2011 and December 31, 2010			(132,542	)		(161,947	)
Total stockholders’ equity					530,595			487,827
Non-controlling interests					4,054,948			3,732,660
Total equity					4,585,543			4,220,487
Total liabilities and equity				$	30,640,255		$	28,498,768

			See accompanying notes to the unaudited condensed consolidated financial statements.

Interactive Brokers Group, Inc. and Subsidiaries
Condensed Consolidated Statements of Comprehensive Income
(Unaudited)

				Three months ended					Six months ended
			June 30,					June 30,
(in thousands, except for shares or per share amounts)				2011		2010			2011		2010

Revenues:
	Trading gains		$	120,569	$	77,640		$	320,907	$	158,214
	Commissions and execution fees			106,432		107,519			215,631		199,252
	Interest income			79,400		40,968			138,063		77,617
	Other income			14,976		17,723			32,411		34,497
		Total revenues		321,377		243,850			707,012		469,580

Interest expense				24,437		17,714			42,184		32,874

		Total net revenues		296,940		226,136			664,828		436,706

Non-interest expenses:
	Execution and clearing			66,074		75,482			132,311		145,170
	Employee compensation and benefits			52,651		49,578			105,010		100,036
	Occupancy, depreciation and amortization			9,059		9,148			18,305		18,352
	Communications			6,665		6,322			12,113		11,724
	General and administrative			13,347		13,530			25,973		24,435
		Total non-interest expenses		147,796		154,060			293,712		299,717

Income before income taxes				149,144		72,076			371,116		136,989

Income tax expense				12,496		7,308			31,228		12,534
Net income				136,648		64,768			339,888		124,455
	Less net income attributable to non-controlling interests			127,087		60,928			314,076		116,724
Net income available for common stockholders			$	9,561	$	3,840		$	25,812	$	7,731

Earnings per share:
	Basic		$	0.22	$	0.09		$	0.61	$	0.18
	Diluted		$	0.22	$	0.09		$	0.60	$	0.18

Weighted average common shares outstanding:
	Basic			43,018,095		41,802,541			42,627,045		41,511,328
	Diluted			43,470,928		42,441,995			43,133,155		42,206,384



Comprehensive income:
	Net income available for common stockholders		$	9,561	$	3,840		$	25,812	$	7,731
	Other comprehensive income:
		Cumulative translation adjustment, before income taxes		6,067		(5,785	)		8,072		(7,992	)
		Income taxes related to items of other comprehensive income		2,230		(2,126	)		2,967		(2,937	)
	Other comprehensive income (loss), net of tax			3,837		(3,659	)		5,105		(5,055	)
Comprehensive income available for common stockholders			$	13,398	$	181		$	30,917	$	2,676


Comprehensive income attributable to non-controlling interests:
	Net income attributable to non-controlling interests		$	127,087	$	60,928		$	314,076	$	116,724
	Other comprehensive income (loss) - cumulative translation adjustment			50,144		(49,426	)		66,761		(68,174	)
Comprehensive income attributable to non-controlling interests			$	177,231	$	11,502		$	380,837	$	48,550

See accompanying notes to the unaudited condensed consolidated financial statements.

Interactive Brokers Group, Inc. and Subsidiaries
Condensed Consolidated Statements of Cash Flows
(Unaudited)
						Six months ended June 30,
(in thousands)						2011			2010
	Cash flows from operating activities:
		Net income			$	339,888		$	124,455
		Adjustments to reconcile net income to net cash provided by
		operating activities:
			Translation losses			20,185			158,614
			Deferred income taxes			9,246			3,554
			Depreciation and amortization			9,360			9,052
			Employee stock plan compensation			21,310			20,166
			(Gains) losses on non-trading investments, net			(3,768	)		768
			Bad debt expense and other			2,695			2,486
		Change in operating assets and liabilities:
			Increase in cash and securities - segregated for regulatory purposes			(919,777	)		(400,000	)
			Decrease in securities borrowed			81,963			926,243
			Decrease (increase) in securities purchased under agreements to resell			32,008			(155,175	)
			Decrease in trading assets			1,337,548			252,067
			Increase in receivables from customers			(2,348,938	)		(1,202,495	)
			Increase in other receivables			(213,533	)		(138,845	)
			Decrease (increase) in other assets			1			(1,361	)
			Decrease in trading liabilities			(1,172,320	)		(921,995	)
			Increase in securities loaned			100,884			266,909
			Increase in payable to customers			3,094,694			1,392,358
			Increase in other payables			24,760			229,982
				Net cash provided by operating activities		416,206			566,783
	Cash flows from investing activities:
			Purchase of investments, net			(16,707	)		(1	)
			Purchase of property and equipment			(6,991	)		(10,885	)
				Net cash used in investing activities		(23,698	)		(10,886	)
	Cash flows from financing activities:
			Dividends paid to non-controlling interests			(70,930	)		(81,160	)
			Dividends paid to shareholders			(4,358	)		-
			Redemption of member interests from IBG Holdings LLC			-			(27,204	)
			Redemption of former member interest			(815	)		-
			Issuance of senior notes			264,680			320,058
			Redemptions of senior notes			(280,983	)		(294,981	)
			Repayments of senior secured credit facility			(100,000	)		-
			Decrease in short-term borrowings, net			(155,200	)		(151,979	)
				Net cash used in financing activities		(347,606	)		(235,266	)
	Effect of exchange rate changes on cash and cash equivalents					23,814			(16,147	)
	Net increase in cash and cash equivalents					68,716			304,484
	Cash and cash equivalents at beginning of period					1,354,219			806,560
	Cash and cash equivalents at end of period				$	1,422,935		$	1,111,044

Supplemental disclosures of cash flow information:
	Cash paid for interest				$	40,759		$	34,190
	Cash paid for taxes				$	54,558		$	60,659

Non-cash financing activities:
	Adjustments to Additional Paid in Capital for changes in proportionate ownership in IBG LLC				$	(13,108	)	$	-
	Adjustments to Non-Controlling Interests for changes in proportionate ownership in IBG LLC				$	13,108		$	-

See accompanying notes to the unaudited condensed consolidated financial statements.

Interactive Brokers Group, Inc. and Subsidiaries
Condensed Consolidated Statement of Changes in Equity
Six months ended June 30, 2011
(Unaudited)
(in thousands, except for share amounts)
	Common Stock
									Accumulated
			Additional						Other	Total		Non-
		Par	Paid-In		Treasury		Retained		Comprehensive	Stockholders'		controlling		Total
	Shares	Value	Capital		Stock		Earnings		Income	Equity		Interests		Equity

Balance, January 1, 2011	42,231,651	$ 503	$ 535,630		$ (161,947	)	$ 92,504		$ 21,137	$ 487,827		$ 3,732,660		$ 4,220,487

Common Stock distributed to employees	1,350,309				29,405					29,405		-		29,405
Redemption of former-member interests			(88	)						(88	)	(727	)	(815	)
Dividends paid to shareholders							(4,358	)		(4,358	)	-		(4,358	)
Dividends paid by IBG LLC to non-controlling interests										-		(70,930	)	(70,930	)
Adjustments for changes in proportionate ownership in IBG LLC			(13,108	)						(13,108	)	13,108		-
Comprehensive income, net of tax							25,812		5,105	30,917		380,837		411,754

Balance, June 30, 2011	43,581,960	$ 503	$ 522,434		$ (132,542	)	$ 113,958		$ 26,242	$ 530,595		$ 4,054,948		$ 4,585,543

See accompanying notes to the unaudited condensed consolidated financial statements.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

1. Organization and Nature of Business

Interactive Brokers Group, Inc. ("IBG, Inc." or the "Company") is a Delaware holding company whose primary asset is its ownership of approximately 11.0% of the membership interests of IBG LLC, which, in turn, owns operating subsidiaries (collectively, "IBG LLC" or the "Group"). The accompanying unaudited condensed consolidated financial statements of IBG, Inc. reflect the consolidation of IBG, Inc.’s investment in IBG LLC for all periods presented (Note 4). IBG LLC is an automated global electronic broker and market maker specializing in routing orders and processing trades in securities, futures and foreign exchange instruments.

IBG LLC is a Connecticut limited liability company that conducts its business through its operating subsidiaries (collectively called the “Operating Companies”): Timber Hill LLC (“TH LLC”), Timber Hill Specialists Corp. (“THSC”), Timber Hill Europe AG (“THE”), Timber Hill Securities Hong Kong Limited (“THSHK”), Timber Hill Australia Pty Limited (“THA”), Timber Hill Canada Company (“THC”), Interactive Brokers LLC (“IB LLC”) and subsidiaries, Interactive Brokers Canada Inc. (“IBC”), Interactive Brokers (U.K.) Limited (“IBUK”), Interactive Brokers (India) Private Limited (“IBI”), Interactive Brokers Financial Products S.A. (“IBFP”), Interactive Brokers Hungary KFT (“IBH”), IB Exchange Corp. (“IBEC”), Interactive Brokers Securities Japan, Inc. (“IBSJ”), Interactive Brokers Software Services Estonia OU (“IBEST”) and Interactive Brokers Software Services Russia (“IBRUS”).

IBG, Inc. operates in two business segments, electronic brokerage and market making. IBG, Inc. conducts its electronic brokerage business through its Interactive Brokers subsidiaries, which provide electronic execution and clearing services to customers worldwide. The Company conducts its market making business principally through its Timber Hill subsidiaries on the world’s leading exchanges and market centers, primarily in exchange-traded equities, equity options and equity-index options and futures.

Certain of the Operating Companies are members of various securities and commodities exchanges in North America, Europe and the Asia/Pacific region. Other than IB LLC, IBUK, IBC, IBI and IBSJ, the Operating Companies do not carry securities accounts for customers or perform custodial functions relating to customer securities.

2. Significant Accounting Policies

Basis of Presentation

These unaudited condensed consolidated financial statements are presented in U.S. dollars and have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding financial reporting with respect to Form 10-Q and accounting standards generally accepted in the United States of America (“U.S. GAAP”) promulgated in the FASB Accounting Standards Codification (“ASC” or the “Codification”). These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in IBG, Inc.’s Annual Report on Form 10-K filed with the SEC on February 28, 2011.

Gains and losses from foreign currency transactions are included in trading gains and losses where related to market making activities or in interest income where related to investment of customer funds as part of electronic brokerage activities in the unaudited condensed consolidated statements of comprehensive income. Non-U.S. subsidiaries have a functional currency (i.e., the currency in which activities are primarily conducted) that is other than the U.S. dollar. Such subsidiaries’ assets and liabilities are translated to U.S. dollars at period-end exchange rates, while revenues and expenses are translated at average exchange rates during the year. Adjustments that result from translating amounts from a subsidiary’s functional currency to the U.S. dollar are reported as a component of accumulated other comprehensive income.

The Company has reclassified an increase of $1.1 billion in securities purchased under agreements to resell to an increase in cash and securities—segregated for regulatory purposes in the unaudited condensed consolidated statement of cash flows for the six months ended June 30, 2010.

Principles of Consolidation

The unaudited condensed consolidated financial statements include the accounts of IBG, Inc. and its majority and wholly owned subsidiaries. As sole managing member of IBG LLC, IBG, Inc. exerts control over the Group’s operations. In accordance with ASC 810, Consolidation, the Company consolidates the Group’s consolidated financial statements and records as non-controlling interest the interests in the Group that IBG, Inc. does not own. The Company’s policy is to consolidate all entities of which it owns more than 50% unless it does not have control. All inter-company balances and transactions have been eliminated. IBG, Inc. would

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

also consolidate any Variable Interest Entities (“VIEs”) pursuant to ASC 860, Transfers and Servicing and ASC 810 of which it is the primary beneficiary. IBG, Inc. currently is not the primary beneficiary of any such entities and therefore no VIEs are included in the unaudited condensed consolidated financial statements.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts and disclosures in the unaudited condensed consolidated financial statements and accompanying notes. Estimates, by their nature, are based on judgment and available information. Therefore, actual results could differ materially from those estimates. Such estimates include the estimated value of investments accounted for under the equity method of accounting, the estimated useful lives of property and equipment, including capitalized internally developed software, the allowance for doubtful accounts, compensation accruals, tax liabilities and estimated contingency reserves.

Fair Value

At June 30, 2011 and December 31, 2010, substantially all of IBG, Inc.’s assets and liabilities, including financial instruments, were carried at fair value based on published market prices and are marked to market daily, or were assets which are short-term in nature (such as U.S. government treasury bills or spot foreign exchange) and were carried at amounts that approximate fair value.

IBG, Inc. applies the fair value hierarchy of ASC 820, Fair Value Measurement, to prioritize the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities and the lowest priority to unobservable inputs. The three levels of the fair value hierarchy are:

Level 1	Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2	Quoted prices in markets that are not considered to be active or financial instruments for which all significant inputs are observable, either directly or indirectly; and

Level 3	Prices or valuations that require inputs that are both significant to fair value measurement and unobservable

Financial instruments owned and financial instruments sold, but not yet purchased, except forward currency contracts, over-the-counter (“OTC”) currency options and certain corporate and municipal debt securities, which are classified as Level 2 financial instruments, are classified within Level 1 of the fair value hierarchy. Level 1 financial instruments, which are valued using quoted market prices as published by exchanges and clearing houses or otherwise broadly distributed in active markets, include U.S. government and sovereign obligations, active listed securities, options, futures, options on futures and corporate and municipal debt securities. IBG, Inc. does not adjust quoted prices for Level 1 financial instruments, even in the event that the Company may hold a large position whereby a purchase or sale could reasonably impact quoted prices. Currency forward contracts and OTC currency options are valued using broadly distributed bank and broker prices, and are classified as Level 2 financial instruments as such instruments are not exchange-traded. Corporate and municipal debt securities, including Federal Deposit Insurance Corporation insured corporate bonds held as securities segregated for regulatory purposes, that are not actively traded are also classified in Level 2. Investments in common stock reported in other assets in the unaudited condensed statement of financial condition are valued using quoted market prices. These investments may include investments in restricted common stock, which would be valued using discounts from quoted market prices and, therefore, would be reported as Level 2 financial instruments.

Earnings Per Share

Earnings per share (“EPS”) are computed in accordance with ASC 260, Earnings per Share. Shares of Class A and Class B common stock share proportionately in the earnings of IBG, Inc. Basic earnings per share are calculated utilizing net income available for common stockholders divided by the weighted average number of shares of Class A and Class B common stock outstanding for that period. Diluted earnings per share are calculated utilizing the Company’s basic net income available for common stockholders divided by diluted weighted average shares outstanding with no adjustments to net income available to common stockholders for dilutive potential common shares.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

Stock-Based Compensation

IBG, Inc. follows ASC 718, Compensation – Stock Compensation, to account for its stock-based compensation plans. ASC 718 requires all share-based payments to employees to be recognized in the financial statements using a fair value-based method. As a result, IBG, Inc. expenses the fair value of stock granted to employees over the related vesting period.

Cash and Cash Equivalents

IBG, Inc. defines cash equivalents as short-term, highly liquid securities and cash deposits with original maturities of three months or less, other than those used for trading purposes.

Cash and Securities — Segregated for Regulatory Purposes

As a result of customer activities, certain Operating Companies are obligated by rules mandated by their primary regulators to segregate or set aside cash or qualified securities to satisfy such regulations, which regulations have been promulgated to protect customer assets. In addition, substantially all of the Operating Companies are members of various clearing organizations at which cash or securities are deposited as required to conduct day-to-day clearance activities. Securities segregated for regulatory purposes consisted of Federal Deposit Insurance Corporation insured corporate bonds, which are recorded as Level 2 financial assets, in the amount of $440,471 and $440,773 at June 30, 2011 and December 31, 2010, U.S. Treasury Bills of $397,694 and $146,976 at June 30, 2011 and December 31, 2010, which are recorded as Level 1 financial assets and securities purchased under agreements to resell in the amount of $2,595,592 and $2,391,813 as of June 30, 2011 and December 31, 2010, respectively, which amounts approximate fair value.

Securities Borrowed and Securities Loaned

Securities borrowed and securities loaned are recorded at the amount of cash collateral advanced or received. Securities borrowed transactions require IBG, Inc. to provide counterparties with collateral, which may be in the form of cash, letters of credit, or other securities. With respect to securities loaned, IBG, Inc. receives collateral, which may be in the form of cash or other securities in an amount generally in excess of the fair value of the securities loaned.

IBG, Inc. monitors the market value of securities borrowed and loaned on a daily basis, with additional collateral obtained or refunded as permitted contractually. Receivables and payables with the same counterparty are not offset in the unaudited condensed consolidated statements of financial condition. For these transactions, the fees received or paid by IBG, Inc. are recorded as interest income or interest expense in the unaudited condensed consolidated statements of comprehensive income.

Securities Purchased Under Agreements to Resell

Securities purchased under agreements to resell are treated as collateralized financing transactions and are recorded at contract value, plus accrued interest, which approximates fair value. The Company’s policy is to obtain possession of collateral with a fair value equal to or in excess of the principal amount loaned under resale agreements. To ensure that the fair value of the underlying collateral remains sufficient, this collateral is valued daily with additional collateral obtained or excess collateral returned, as permitted under contractual provisions.

Financial Instruments Owned and Sold But Not Yet Purchased

Stocks, government, corporate and municipal bonds, futures and options transactions are reported in the unaudited condensed consolidated financial statements on a trade date basis. All financial instruments owned and financial instruments sold but not yet purchased are recorded at fair value based upon quoted market prices. All firm-owned financial instruments pledged to counterparties where the counterparty has the right, by contract or custom, to sell or repledge the financial instruments are classified as financial instruments owned and pledged as collateral in the unaudited condensed consolidated statements of financial condition.

IBG, Inc. also enters into currency forward contracts. These transactions, which are also reported on a trade date basis, are agreements to exchange a fixed amount of one currency for a specified amount of a second currency at completion of the currency forward contract term. Unrealized mark-to-market gains and losses on currency forward contracts are reported as components of financial instruments owned or financial instruments sold but not yet purchased in the unaudited condensed consolidated statements of financial condition. Net earnings or losses are reported as components of interest income in the unaudited condensed consolidated statements of comprehensive income.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

Customer Receivables and Payables

Customer securities transactions are recorded on a settlement date basis and customer commodities transactions are recorded on a trade date basis. Receivables from and payables to customers include amounts due on cash and margin transactions, including futures contracts transacted on behalf of customers. Securities owned by customers, including those that collateralize margin loans or other similar transactions, are not reported in the unaudited condensed consolidated statements of financial condition. Amounts receivable from customers that are determined by management to be uncollectible are written off to general and administrative expense.

Receivables from and Payables to Brokers, Dealers and Clearing Organizations

Receivables from brokers, dealers and clearing organizations include amounts receivable for securities not delivered by IBG, Inc. to the purchaser by the settlement date (“fails to deliver”) and margin deposits. Payables to brokers, dealers and clearing organizations include amounts payable for securities not received by IBG, Inc. from a seller by the settlement date (“fails to receive”). Receivables and payables to brokers, dealers and clearing organizations also include amounts related to futures contracts executed on behalf of customers as well as net payables and receivables from unsettled trades.

Investments

IBG, Inc. makes certain strategic investments and accounts for these investments under the cost method of accounting or under the equity method of accounting as required under ASC 323, Investments – Equity Method and Joint Ventures. Investments are accounted for under the equity method of accounting, when IBG, Inc. has significant influence over the investee. Investments accounted for under the equity method, including where the investee is a limited partnership or limited liability company, are recorded at the fair value amount of IBG, Inc.’s investment and adjusted each period for IBG, Inc.’s share of the investee’s income or loss. IBG, Inc.’s share of the income or losses from equity investments is reported as a component of other income in the unaudited condensed consolidated statements of comprehensive income and the recorded amounts of IBG, Inc.’s equity investments, which are included in other assets in the unaudited condensed consolidated statements of financial condition, increase or decrease accordingly. Distributions received from equity investees are recorded as reductions to the respective investment balance.

A judgmental aspect of accounting for investments is evaluating whether an other-than-temporary decline in the value of an investment has occurred. The evaluation of an other-than-temporary impairment is dependent on specific quantitative and qualitative factors and circumstances surrounding an investment, including recurring operating losses, credit defaults and subsequent rounds of financing. None of IBG, Inc.’s equity investments have readily determinable market values. All equity investments are reviewed for changes in circumstances or occurrence of events that suggest IBG, Inc.’s investment may not be recoverable. If an unrealized loss on any investment is considered to be other-than-temporary, the loss is recognized in the period the determination is made. IBG, Inc. also holds exchange memberships and investments in equity securities of certain exchanges as required to qualify as a clearing member, and strategic investments in corporate stock that do not qualify for equity method accounting. Such investments are recorded at cost or, if an other-than-temporary impairment in value has occurred, at a value that reflects management’s estimate of the impairment, and are included in other assets in the unaudited condensed consolidated statements of financial condition. Dividends are recognized as a component of other income as such dividends are received.

Property and Equipment

Property and equipment, which is a component of other assets, consist of purchased technology hardware and software, internally developed software, leasehold improvements and office furniture and equipment. Property and equipment are recorded at historical cost, less accumulated depreciation and amortization. Additions and improvements that extend the lives of assets are capitalized, while expenditures for repairs and maintenance are expensed as incurred. Depreciation and amortization are computed using the straight-line method. Equipment is depreciated over the estimated useful lives of the assets, while leasehold improvements are amortized over the lesser of the estimated economic useful life of the asset or the term of the lease. Computer equipment is depreciated over three to five years and office furniture and equipment are depreciated over five to seven years. Qualifying costs for internally developed software are capitalized and amortized over the expected useful life of the developed software, not to exceed three years.

Comprehensive Income and Foreign Currency Translation

Comprehensive income consists of two components: net income and other comprehensive income. Other comprehensive income refers to revenues, expenses, gains and losses that are included in stockholders’ equity but are excluded from net income. IBG, Inc.’s other comprehensive income is comprised of foreign currency translation adjustments.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

IBG, Inc.’s international Operating Companies have a functional currency (i.e., the currency in which activities are primarily conducted) that is other than the U.S. dollar. Such subsidiaries’ assets and liabilities are translated into U.S. dollars at period-end exchange rates, and revenues and expenses are translated at average exchange rates prevailing during the period. Translation gains and losses from market making and electronic brokerage activities, respectively, are included in trading gains and in other income in the accompanying unaudited condensed consolidated statements of comprehensive income. Adjustments that result from translating amounts from a subsidiary’s functional currency are reported as a component of accumulated other comprehensive income.

Revenue Recognition

— Trading Gains

Trading gains and losses are recorded on trade date and are reported on a net basis. Trading gains are comprised of changes in the fair value of trading assets and liabilities (i.e., unrealized gains and losses) and realized gains and losses. Dividends are integral to the valuation of stocks and interest is integral to the valuation of fixed income instruments. Accordingly, both dividends and interest income and expense attributable to specific trading assets and liabilities are reported on a net basis as a component of trading gains in the accompanying unaudited condensed consolidated statements of comprehensive income.

— Commissions and Execution Fees

Commissions charged for executing and clearing customer transactions are accrued on a trade date basis and are reported as commissions and execution fees in the unaudited condensed consolidated statements of comprehensive income, and the related expenses are reported as execution and clearing expenses, also on a trade date basis.

— Interest Income and Expense

The Company earns interest income and incurs interest expense primarily in connection with its Electronic Brokerage customer business and its securities lending activities. Such interest is recorded on the accrual basis.

Income Taxes

IBG, Inc. accounts for income taxes in accordance with ASC 740, Income Taxes, which requires the recognition of tax benefits or expenses on the temporary differences between the financial reporting and tax bases of assets and liabilities, including the accounting for uncertainty of income tax positions and valuation allowances for deferred tax assets reported in financial statements, prescribing a “more likely than not” threshold and measurement attribute for recognition in the financial statements of an asset or liability resulting from a tax position taken or expected to be taken in an income tax return.

The Company’s provision for income taxes is comprised of two principal components: (1) the Group’s consolidated income tax expense, and (2) the Company’s U.S. Federal and state income taxes on its proportionate share of the Group’s income that is subject to tax.

The Group has historically operated in the United States as a limited liability company that was treated as a partnership for U.S. federal income tax purposes. Accordingly, the Group’s income, which is allocated proportionately to the Group’s members, the Company and IBG Holdings LLC, is not subject to U.S. federal income taxes at the Group level. Taxes related to income earned by partnerships represent obligations of the individual partners. Therefore, income taxes attributable to the Group and included in income tax expense in the Company’s unaudited condensed consolidated statements of comprehensive income are primarily incurred in non-U.S. subsidiaries. Outside the United States, the Group principally operates through subsidiary corporations and is subject to local income taxes. In addition, state and local income taxes include taxes assessed on the Group by jurisdictions that do not recognize the Group’s limited liability company status. Foreign income taxes paid by the Group on dividends received are also reported as income taxes.

IBG, Inc. recognizes interest related to income tax matters as interest income or expense and penalties related to income tax matters as income tax expense.

Recently Issued Accounting Pronouncements

Subsequent to the adoption of the ASC, the FASB will issue Accounting Standards Updates (“ASU’s”) as the means to add to or delete from, or otherwise amend the ASC. In 2011, prior to the issuance of the Company’s unaudited condensed consolidated financial statements, ASU’s 2011-01 through ASU 2011-07 were issued. Following is a summary of recently issued ASU’s that may affect the Company’s condensed consolidated financial statements:

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

	Affects	Status

ASU 2010-13	Compensation - Stock Compensation (Topic 718) - Effect of Denominating the Exercise Price of a Share-Based Payment Award in the Currency of the Market in Which the Underlying Equity Security Trades	Fiscal years, and interim periods within those fiscal years, beginning after December 15, 2010. Early application is permitted.

ASU 2011-01	Receivables (Topic 310) - Deferral of the Effective Date of Disclosures about Troubled Debt Restructurings in Update No. 2010-20	Effective on issuance.

ASU 2011-02	Receivables (Topic 310) - A Creditor's Determination of Whether a Restructuring is a Troubled Debt Restructuring	First interim or annual period beginning after June 15, 2011, to be applied retrospectively to the beginning of the annual period of adoption. Early adoption is permitted.

ASU 2011-03	Transfers and Servicing (Topic 860) - Reconsideration of Effective Control for Repurchase Agreements	Fiscal years, and interim periods within those fiscal years, beginning after December 15, 2011. Early application is not permitted.

ASU 2011-04	Fair Value Measurement (Topic 820) - Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS	To be applied prospectively for interim and annual periods beginning after December 15, 2011. Early adoption is not permitted for public entities.

ASU 2011-05	Comprehensive Income (Topic 220) - Presentation of Comprehensive Income	To be applied retrospectively, with reporting to commence in fiscal years beginning after December 15, 2011. Early adoption is permitted.

Adoption of those ASU’s that became effective during 2011, prior to the issuance of the Company’s unaudited condensed consolidated financial statements, did not have a material effect on those financial statements. Other than ASU 2011-05, which the Company adopted early, as permitted, for the quarter ended June 30, 2011, management is assessing the potential impact on the Company’s financial statements of adopting ASU’s that will become effective in the future.

ASC/IFRS Convergence

In February 2010, the SEC issued “Commission Statement in Support of Convergence and Global Accounting Standards”, a formal statement updating the status of its November 2008 “Roadmap for the Potential Use of Financial Statements Prepared in Accordance with International Financial Reporting Standards by U.S. Issuers” (“IFRS Roadmap”). The statement supported convergence of accounting standards and the development of a single set of global accounting standards. As directed in this statement, the SEC staff issued “Work Plan for the Consideration of Incorporating International Financial Reporting Standards into the Financial Reporting System for U.S. Issuers” (the “Work Plan”) in May 2010, and issued a follow-up Staff Paper, subtitled “Exploring a Possible Method of Incorporation” in May 2011. The Work Plan outlines the steps to be taken to provide the SEC with information to be able to conclude whether IFRS should be adopted for U.S. registrants and the Staff Paper discusses alternative approaches (“Convergence” and “Endorsement”) to adoption that could be applied. Within the Staff Paper, the SEC Staff has issued a Request for Comment on these alternatives. The Comment period ended July 31, 2011 and the SEC Staff have not issued further reporting to date. Neither the February statement, the Work Plan nor the Staff Paper define a certain date for adoption of IFRS. A decision on whether the SEC will mandate adoption of IFRS, in full or in part, may be made in 2011. If a decision to adopt IFRS is made at that point in time, initial adoption for U.S. registrants would be approximately December 31, 2015 or 2016, with a transition date of either January

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

1, 2013 or 2014 for the initial three year retrospective comparative reporting period. Management continues to assess the potential impact of adopting IFRS on the Company’s unaudited condensed consolidated financial statements.

3. Trading Activities and Related Risks

IBG, Inc.’s trading activities include providing securities market making and brokerage services. Trading activities expose IBG, Inc. to market and credit risks. These risks are managed in accordance with established risk management policies and procedures. To accomplish this, management has established a risk management process that includes:

a regular review of the risk management process by executive management as part of its oversight role;

defined risk management policies and procedures supported by a rigorous analytic framework; and

articulated risk tolerance levels as defined by executive management that are regularly reviewed to ensure that IBG, Inc.’s risk-taking is consistent with its business strategy, capital structure, and current and anticipated market conditions.

Market Risk

IBG, Inc. is exposed to various market risks. Exposures to market risks arise from equity price risk, foreign currency exchange rate fluctuations and changes in interest rates. IBG, Inc. seeks to mitigate market risk associated with trading inventories by employing hedging strategies that correlate rate, price and spread movements of trading inventories and related financing and hedging activities. IBG, Inc. uses a combination of cash instruments and exchange traded derivatives to hedge its market exposures. The following discussion describes the types of market risk faced:

Equity Price Risk

Equity price risk arises from the possibility that equity security prices will fluctuate, affecting the value of equity securities and other instruments that derive their value from a particular stock, a defined basket of stocks, or a stock index. IBG, Inc. is subject to equity price risk primarily in securities owned and securities sold but not yet purchased. IBG, Inc. attempts to limit such risks by continuously reevaluating prices and by diversifying its portfolio across many different options, futures and underlying securities and avoiding concentrations of positions based on the same underlying security.

Currency Risk

Currency risk arises from the possibility that fluctuations in foreign exchange rates will impact the value of financial instruments. Exchange rate contracts may include cross-currency swaps and currency futures contracts. Currency swaps are agreements to exchange future payments in one currency for payments in another currency. These agreements are used to effectively convert assets or liabilities denominated in different currencies. Currency futures are contracts for delayed delivery of currency at a specified future date. IBG, Inc. uses currency swaps to manage the levels of its non-U.S. dollar currency balances and currency cash and futures to hedge its global exposure.

Interest Rate Risk

Interest rate risk arises from the possibility that changes in interest rates will affect the value of financial instruments. IBG, Inc. is exposed to interest rate risk on cash and margin balances, positions carried in equity securities, options and futures and on its debt obligations. These risks are managed through investment policies and by entering into interest rate futures contracts.

Credit Risk

IBG, Inc. is exposed to risk of loss if an individual, counterparty or issuer fails to perform its obligations under contractual terms (“default risk”). Both cash instruments and derivatives expose IBG, Inc. to default risk. IBG, Inc. has established policies and procedures for mitigating credit risk on principal transactions, including reviewing and establishing limits for credit exposure, maintaining collateral, and continually assessing the creditworthiness of counterparties.

The Company’s credit risk is limited in that substantially all of the contracts entered into are settled directly at securities and commodities clearing houses and a small portion is settled through member firms and banks with substantial financial and operational resources. IBG, Inc. seeks to control the risks associated with its customer margin activities by requiring customers to maintain collateral in compliance with regulatory and internal guidelines.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

In the normal course of business, IBG, Inc. executes, settles, and finances various customer securities transactions. Execution of these transactions includes the purchase and sale of securities by IBG, Inc. that exposes IBG, Inc. to default risk arising from the potential that customers or counterparties may fail to satisfy their obligations. In these situations, IBG, Inc. may be required to purchase or sell financial instruments at unfavorable market prices to satisfy obligations to customers or counterparties. Liabilities to other brokers and dealers related to unsettled transactions (i.e., securities fails to receive) are recorded at the amount for which the securities were purchased, and are paid upon receipt of the securities from other brokers or dealers. In the case of aged securities fails to receive, IBG, Inc. may purchase the underlying security in the market and seek reimbursement for any losses from the counterparty.

For cash management purposes, IBG, Inc. enters into short-term securities purchased under agreements to resell and securities sold under agreements to repurchase transactions (“repos”) in addition to securities borrowing and lending arrangements, all of which may result in credit exposure in the event the counterparty to a transaction is unable to fulfill its contractual obligations. In accordance with industry practice, repos are collateralized by securities with a market value in excess of the obligation under the contract. Similarly, securities borrowed and loaned agreements are collateralized by deposits of cash or securities. IBG, Inc. attempts to minimize credit risk associated with these activities by monitoring collateral values on a daily basis and requiring additional collateral to be deposited with or returned to IBG, Inc. as permitted under contractual provisions.

Concentrations of Credit Risk

IBG, Inc.’s exposure to credit risk associated with its trading and other activities is measured on an individual counterparty basis, as well as by groups of counterparties that share similar attributes. Concentrations of credit risk can be affected by changes in political, industry, or economic factors. To reduce the potential for risk concentration, credit limits are established and exposure is monitored in light of changing counterparty and market conditions. As of June 30, 2011, the Company did not have any material concentrations of credit risk.

Off-Balance Sheet Risks

IBG, Inc. may be exposed to a risk of loss not reflected in the unaudited condensed consolidated financial statements for futures products, which represent obligations of IBG, Inc. to settle at contracted prices, which may require repurchase or sale in the market at prevailing prices. Accordingly, these transactions result in off-balance sheet risk as IBG, Inc.’s cost to liquidate such futures contracts may exceed the amounts reported in IBG, Inc.’s unaudited condensed consolidated statements of financial condition.

4. Equity and Earnings Per Share

In connection with its IPO in May 2007, IBG, Inc. purchased 10.0% of the membership interests in IBG LLC from IBG Holdings LLC, became the sole managing member of IBG LLC and began to consolidate IBG LLC’s financial results into its financial statements. IBG Holdings LLC wholly owns all Class B common stock, which common stock has voting rights in proportion to its ownership interests in IBG LLC, approximately 89.0% as of June 30, 2011. The unaudited condensed consolidated financial statements reflect the results of operations and financial position of IBG, Inc., including consolidation of its investment in IBG LLC, and IBG Holdings LLC’s ownership interests in IBG LLC are reported as non-controlling interests.

Recapitalization and Post-IPO Capital Structure

Immediately prior to and immediately following the consummation of the IPO, IBG, Inc., IBG Holdings LLC, IBG LLC and the members of IBG LLC consummated a series of transactions collectively referred to herein as the “Recapitalization.” In connection with the Recapitalization, IBG, Inc., IBG Holdings LLC and the historical members of IBG LLC entered into an exchange agreement, dated as of May 3, 2007 (the “Exchange Agreement”), pursuant to which the historical members of IBG LLC received membership interests in IBG Holdings LLC in exchange for their membership interests in IBG LLC. Additionally, IBG, Inc. became the sole managing member of IBG LLC.

In connection with the consummation of the IPO, IBG Holdings LLC used the net proceeds to redeem 10.0% of members’ interests in IBG Holdings LLC in proportion to their interests. Immediately following the Recapitalization and IPO, IBG Holdings LLC owned approximately 90% of IBG LLC and 100% of IBG, Inc.’s Class B common stock, which has voting power in IBG, Inc. proportionate to the extent of IBG Holdings LLC’s ownership of IBG LLC.

The Exchange Agreement also provides for future redemptions of member interests and for the purchase of member interests in IBG LLC by IBG, Inc. from IBG Holdings LLC, which could result in IBG, Inc. acquiring the remaining member interests in IBG LLC that it does not own. On an annual basis, holders of IBG Holdings LLC member interests are able to request redemption of such

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

member interests over a minimum eight (8) year period following the IPO; 12.5% annually for seven (7) years and 2.5% in the eighth year.

Redemptions may be funded through two (2) methods. Material redemptions would be funded from the proceeds of sales of additional shares of Class A Common Stock ("Common Stock"), although there have been no such additional sales of Common Stock through June 30, 2011. Three hundred sixty (360) million shares of authorized Common Stock were reserved for such future sales.

In lieu of a sale of Common Stock, the Exchange Agreement provides that IBG LLC, using its available liquidity, may facilitate the redemption by IBG Holdings LLC of interests held by its members. Subsequent to the IPO and with the consent of IBG Holdings LLC and IBG, Inc. (on its own behalf and acting as the sole managing member of IBG LLC), IBG LLC agreed to redeem membership interests from IBG Holdings LLC as follows:

				Price per Equivalent
		Fair Value		Class A Share


2008	$	72,015	$	29.99
2009		14,738		14.85
2010		27,204		16.80

As a consequence of these transactions, and distribution of shares to employees (Note 10), IBG, Inc.’s interest in IBG LLC has increased to approximately 11.0%, with IBG Holdings LLC owning the remaining 89.0% as of June 30, 2011. The redemptions also resulted in an increase in the IBG Holdings LLC interest held by Thomas Peterffy and his affiliates from approximately 84.6% at the IPO to approximately 85.8% at June 30, 2011.

Since consummation of the IPO and Recapitalization, IBG, Inc.’s equity capital structure has been comprised of Class A and Class B common stock. All shares of common stock have a par value of $0.01 per share and have identical rights to earnings and dividends and in liquidation. As described previously in this Note 4, Class B common stock has voting power in IBG, Inc. proportionate to the extent of IBG Holdings LLC’s ownership of IBG LLC. At June 30, 2011 and December 31, 2010, 1,000,000,000 shares of Class A common stock were authorized, of which 50,298,024 shares have been issued; and 43,581,860 and 42,231,551 shares were outstanding, respectively. Class B common stock is comprised of 100 authorized shares, of which 100 shares were issued and outstanding as of June 30, 2011 and December 31, 2010, respectively. In addition, 10,000 shares of preferred stock have been authorized, of which no shares are issued or outstanding as of June 30, 2011 and December 31, 2010, respectively.

As a result of a federal income tax election made by IBG LLC applicable to the acquisition of IBG LLC member interests by IBG, Inc. the income tax basis of the assets of IBG LLC acquired by IBG, Inc. have been adjusted based on the amount paid for such interests. A deferred tax asset of $380,785 was recorded as of the IPO date, which deferred tax asset is a component of Other Assets in the unaudited condensed consolidated statement of financial condition and is being amortized as additional deferred income tax expense over 15 years, as allowable under current tax law. As of June 30, 2011 and December 31, 2010, the unamortized balance of the deferred tax asset was $302,957 and $313,526, respectively. IBG, Inc. also entered into an agreement (the “Tax Receivable Agreement”) with IBG Holdings LLC to pay IBG Holdings LLC (for the benefit of the former members of IBG LLC) 85% of the tax savings that IBG, Inc. actually realizes as the result of the tax basis increase. As of the IPO date, a payable to IBG Holdings LLC of $323,668 was recorded by IBG, Inc. and is reported as Payable to Affiliate in the unaudited condensed consolidated statement of financial condition. Amounts payable under the Tax Receivable Agreement are subject to repayment to IBG Holdings LLC annually upon the filing of IBG, Inc.’s federal income tax return. The remaining 15%, $57,117, was accounted for as a permanent increase to additional paid-in capital in the unaudited condensed consolidated statement of financial condition. The Company has paid IBG Holdings LLC a total of $38.8 million through June 30,2011 pursuant to the terms of the Tax Receivable Agreement.

Stock Repurchase Program

In September 2008, the Company’s Board of Directors approved the repurchase of up to eight (8) million shares of its Class A common stock by IBG LLC. Shares may be purchased from time to time in the open market and in private transactions if the company deems the price appropriate. In November 2008, 65,800 shares were repurchased at a cost of $866, and are being held as Treasury Stock.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

Earnings per Share

Basic earnings per share are calculated utilizing net income available for common stockholders divided by the weighted average number of shares of Class A and Class B common stock outstanding for that period:

			Three months ended				Six months ended
			June 30,				June 30,
			2011		2010		2011		2010
Basic earnings per share:

	Net income available for common stockholders	$	9,561	$	3,840	$	25,812	$	7,731

	Weighted average shares of common stock outstanding:
Class A			43,017,995		41,802,441		42,626,945		41,511,228
Class B			100		100		100		100
			43,018,095		41,802,541		42,627,045		41,511,328

	Basic earnings per share	$	0.22	$	0.09	$	0.61	$	0.18

Diluted earnings per share are calculated utilizing the Company’s basic net income available for common stockholders divided by diluted weighted average shares outstanding with no adjustments to net income available to common stockholders for dilutive potential common shares:

					Three months ended				Six months ended
					June 30,				June 30,
					2011		2010		2011		2010
Diluted earnings per share:
	Net income available for common stockholders - basic			$	9,561	$	3,840	$	25,812	$	7,731
	Adjustments for potentially dilutive common shares				-		-		-		-

	Net income available for common stockholders			$	9,561	$	3,840	$	25,812	$	7,731

	Weighted average shares of common stock outstanding:
		Class A:
			Issued and outstanding		43,017,995		41,802,441		42,626,945		41,511,228
Potentially dilutive common shares:
Issuable pursuant to 2007 ROI Unit Stock Plan					452,833		639,454		506,110		695,056
		Class B			100		100		100		100
					43,470,928		42,441,995		43,133,155		42,206,384

	Diluted earnings per share			$	0.22	$	0.09	$	0.60	$	0.18

Member and Stockholder Dividends

In April and June 2011, IBG LLC paid dividends to its members totaling $81.0 million, of which IBG, Inc.’s proportionate share was $10.1 million. On April 21, 2011, the Company declared a quarterly cash dividend of $0.10 per share of Common Stock, totaling $4.4 million, which was paid on June 14, 2011 to shareholders of record as of May 27, 2011. In addition, holders of unvested Class A shares will receive payments in lieu of the quarterly dividend totaling $0.6 million, recorded as compensation expense. The remainder of the dividends received by the Company has been retained to fund its income tax liabilities.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

5. Comprehensive Income

Comprehensive income is comprised of Net Income and Other Comprehensive Income (“OCI”). The Company’s OCI is comprised of foreign currency translation adjustments, which arise from changes in the US Dollar value of the net worth of the Company’s international Operating Companies during respective reporting periods. The following table presents Comprehensive Income, net of income taxes, and Earnings Per Share on Comprehensive Income:

		Three months ended					Six months ended
		June 30,					June 30,
		2011		2010			2011		2010

Net income available for common stockholders		$	9,561	$	3,840		$	25,812	$	7,731

Other comprehensive income:
	Cumulative translation adjustment, before income taxes		6,067		(5,785	)		8,072		(7,992	)
	Income taxes related to items of other comprehensive income		2,230		(2,126	)		2,967		(2,937	)
Other comprehensive income (loss), net of tax			3,837		(3,659	)		5,105		(5,055	)

Comprehensive income available for common stockholders		$	13,398	$	181		$	30,917	$	2,676


Earnings per share on comprehensive income:
	Basic	$	0.311	$	0.004		$	0.725	$	0.064
	Diluted	$	0.308	$	0.004		$	0.717	$	0.063


Weighted average common shares outstanding:
	Basic		43,018,095		41,802,541			42,627,045		41,511,328
	Diluted		43,470,928		42,441,995			43,133,155		42,206,384

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

6. Fair Value

The following tables set forth, by level within the fair value hierarchy (Note 2), financial assets and liabilities, primarily financial instruments owned and financial instruments sold, but not yet purchased at fair value as of June 30, 2011 and December 31, 2010. As required by ASC 820, assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.

			Financial Assets At Fair Value as of June 30, 2011

			Level 1		Level 2		Level 3		Total

Securities segregated for regulatory purposes		$	397,694	$	440,471	$	-	$	838,165
Financial instruments owned:
	Stocks		621,422		-		-		621,422
	Options		3,277,354		-		-		3,277,354
	U.S. and foreign government obligations		15,610		-		-		15,610
	Warrants		56,948		-		-		56,948
	Corporate and municipal bonds		51,503		51,428		-		102,931
	Discount certificates		50,366		-		-		50,366
	Currency forward contracts		-		674		-		674
			4,073,203		52,102		-		4,125,305
Financial instruments owned and pledged as collateral:
	Stocks		1,676,779		-		-		1,676,779
	U.S. and foreign government obligations		301,379		-		-		301,379
			1,978,158		-		-		1,978,158
			6,051,361		52,102		-		6,103,463

Other assets - investments in common stock			22,892		-		-		22,892

		$	6,471,947	$	492,573	$	-	$	6,964,520


			Financial Liabilities At Fair Value as of June 30, 2011

			Level 1		Level 2		Level 3		Total
Financial instruments sold, not yet purchased:
	Stocks	$	1,777,331	$	-	$	-	$	1,777,331
	Options		3,057,013		-		-		3,057,013
	U.S. and foreign government obligations		53		-		-		53
	Corporate bonds		53,681		49,573		-		103,254
	Currency forward contracts		-		2,325		-		2,325
		$	4,888,078	$	51,898	$	-	$	4,939,976

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

		Financial Assets At Fair Value as of December 31, 2010

			Level 1		Level 2		Level 3		Total

Securities segregated for regulatory purposes		$	146,976	$	440,773	$	-	$	587,749
Financial instruments owned:
	Stocks		1,318,003		-		-		1,318,003
	Options		3,893,695		-		-		3,893,695
	U.S. and foreign government obligations		8,408		-		-		8,408
	Warrants		85,740		-		-		85,740
	Corporate and municipal bonds		47,757		48,895		-		96,652
	Discount certificates		18,217		-		-		18,217
	Currency forward contracts		-		214		-		214
			5,371,820		49,109		-		5,420,929
Financial instruments owned and pledged as collateral:
	Stocks		1,633,383		-		-		1,633,383
	U.S. and foreign government obligations		368,105		-		-		368,105
			2,001,488		-		-		2,001,488
			7,373,308		49,109		-		7,422,417

Other assets - investments in common stock			-		2,239		-		2,239

		$	7,520,284	$	492,121	$	-	$	8,012,405


		Financial Liabilities At Fair Value as of December 31, 2010

			Level 1		Level 2		Level 3		Total
Financial instruments sold, not yet purchased:
	Stocks	$	2,256,259	$	-	$	-	$	2,256,259
	Options		3,765,862		-		-		3,765,862
	Warrants		12		-		-		12
	Corporate bonds		48,419		50,734		-		99,153
	Currency forward contracts		-		3,938		-		3,938
		$	6,070,552	$	54,672	$	-	$	6,125,224

7. Collateralized Transactions

The Company enters into securities borrowing and lending transactions and agreements to repurchase and resell securities to finance trading inventory, to obtain securities for settlement and to earn residual interest rate spreads. In addition, the Company’s customers pledge their securities owned to collateralize margin loans. Under these transactions, the Company either receives or provides collateral, including equity, corporate debt and U.S. government securities. Under many agreements, the Company is permitted to sell or repledge securities received as collateral and use these securities to secure repurchase agreements, enter into securities lending transactions or deliver these securities to counterparties to cover short positions. At June 30, 2011 and December 31, 2010, the fair value of securities received as collateral where the Company is permitted to sell or repledge the securities was approximately $19.0 and $15.7 billion, respectively, of which $6.7 and $6.6 billion, respectively, had been repledged or resold, of which some were deposited in a separate bank account for the exclusive benefit of customers in accordance with SEC Rule 15c3-3. The sources of collateral at June 30, 2011 and December 31, 2010 were: securities lending transactions and agreements to resell of $6.0 and $5.9 billion; and customer margin securities of $13.0 and $9.8 billion, respectively.

In the normal course of business, the Company pledges qualified securities with clearing organizations to satisfy daily margin and clearing fund requirements. At June 30, 2011, substantially all government obligations owned were pledged to clearing organizations.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

Financial instruments owned and pledged, where the counterparty has the right to repledge, at June 30, 2011 and December 31, 2010 consisted of the following:

		June 30,		December 31,
		2011		2010
Stocks	$	1,676,779	$	1,633,383
U.S. and foreign government obligations		301,379		368,105
	$	1,978,158	$	2,001,488

The Company also engages in securities financing transactions with and for customers through margin lending. Under these agreements and transactions, the Company either receives or provides collateral, including U.S. government securities, corporate debt and equity securities. Customer receivables generated from margin lending activity are collateralized by customer-owned securities held by the Company. Customers’ required margin levels and established credit limits are monitored continuously by risk management staff using automated systems. Pursuant to Company policy and as enforced by such systems, customers are required to deposit additional collateral or reduce positions, when necessary to avoid automatic liquidation of positions.

Margin loans are extended on a demand basis and are not committed facilities. Factors considered in the acceptance or rejection of margin loans are the amount of the loan, the degree of leverage being employed in the account and an overall evaluation of the portfolio to ensure proper diversification or, in the case of concentrated positions, appropriate liquidity of the underlying collateral. Additionally, transactions relating to concentrated or restricted positions are limited or prohibited by raising the level of required margin collateral (to 100% in the extreme case). Underlying collateral for margin loans is evaluated with respect to the liquidity of the collateral positions, valuation of securities, volatility analysis and an evaluation of industry concentrations. Adherence to the Company’s collateral policies significantly limits the Company’s credit exposure to margin loans in the event of a customer’s default. Under margin lending agreements, the Company may request additional margin collateral from customers and may sell securities that have not been paid for or purchase securities sold but not delivered from customers, if necessary. At June 30, 2011 and December 31, 2010, there were approximately $9.3 billion and $7.0 billion, respectively, of customer margin loans outstanding.

8. Senior Notes Payable

At June 30, 2011 and December 31, 2010, IBG LLC had $178,300 and $194,603, respectively, of senior notes outstanding. Senior notes issued during and subsequent to June 2011 have a 3% per annum interest rate. Of the senior notes outstanding at June 30, 2011 $147,913 were 5% notes and $30,387 were 3% notes. Of the senior notes outstanding at December 31, 2010 $46,918 were 7% notes and $147,685 were 5% notes. All senior notes have either a 15-month or an 18-month maturity. IBG LLC may, solely at its option, redeem the senior notes at any time on or after a specified date in the third month or the sixth month, respectively, after the date on which the senior notes are issued and sold (the “Optional Redemption Date”), at a redemption price equal to 100% of the principal amount of the senior notes to be redeemed plus accrued interest.

9. Senior Secured Revolving Credit Facility

On May 18, 2010, IBG LLC entered into a $100 million two-year senior secured revolving credit facility with Bank of America, N.A. as administrative agent and Citibank, N.A., as syndication agent. IBG LLC is the sole borrower under this credit facility. The facility’s interest rate is indexed to the overnight federal funds rate or to the LIBOR rate for the relevant term, at the borrower’s option, and is secured by a first priority interest in all of the capital stock of each entity owned directly by IBG LLC (subject to customary limitations with respect to foreign subsidiaries). The facility may be used to finance working capital needs and general corporate purposes, including downstreaming funds to IBG LLC’s regulated broker-dealer subsidiaries as regulatory capital. This allows IBG LLC to take advantage of market opportunities when they arise, while maintaining substantial excess regulatory capital. The financial covenants contained in this credit facility are as follows:

minimum consolidated shareholders’ equity, as defined, of $3.625 billion, with quarterly increases equal to 25% of positive consolidated net income;

· maximum total debt to capitalization ratio of 30%;

· minimum liquidity ratio of 1.0 to 1.0; and

· maximum total debt to net regulatory capital ratio of 35%.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

At maturity, subject to meeting certain terms of the facility, the Company will have an option to convert the facility to a one-year term loan. At June 30, 2011, no borrowings were outstanding under this credit facility and IBG LLC was in compliance with all of the covenants. This credit facility replaced a $100 million senior secured revolving credit facility that matured on May 19, 2010.

10. Employee Incentive Plans

Return on Investment Dollar Units (“ROI Dollar Units”)

From 1998 through January 1, 2006, IBG LLC granted all non-member employees ROI Dollar Units, which are redeemable under the amended provisions of the plan, and in accordance with regulations issued by the Internal Revenue Service (Section 409A of the Internal Revenue Code). Upon redemption, the grantee is entitled to accumulated earnings on the face value of the certificate, but not the actual face value. For grants made in 1998 and 1999, grantees may redeem the ROI Dollar Units after vesting on the fifth anniversary of the date of their grant and prior to the tenth anniversary of the date of their grant. For grants made between January 1, 2000 and January 1, 2005, grantees must elect to redeem the ROI Dollar Units upon the fifth, seventh or tenth anniversary date. These ROI Dollar Units will vest upon the fifth anniversary of the date of their grant and will continue to accumulate earnings until the elected redemption date. For grants made on or after January 1, 2006, all ROI Dollar Units shall vest on the fifth anniversary date of their grant and will be automatically redeemed. Subsequent to the IPO, no additional ROI Dollar Units have been or will be granted, and non-cash compensation to employees will consist primarily of grants of shares of Common Stock as described below under “2007 Stock Incentive Plan.”

As of June 30, 2011 and December 31, 2010, payables to employees for ROI Dollar Units were $9,518 and $15,415, respectively. Of these payable amounts, $-0- and $4,613 were vested as of June 30, 2011 and December 31, 2010, respectively. These amounts are included in accounts payable, accrued expenses and other liabilities in the unaudited condensed consolidated statements of financial condition. Compensation expense for the ROI Dollar Unit plan, included in the unaudited condensed consolidated statements of comprehensive income was $928 and $208 for the six months ended June 30, 2011 and 2010, respectively.

2007 ROI Unit Stock Plan

In connection with the IPO, IBG, Inc. adopted the Interactive Brokers Group, Inc. 2007 ROI Unit Stock Plan (the “ROI Unit Stock Plan”). Under this plan, certain employees of the Group who held ROI Dollar Units, at the employee’s option, elected to invest their ROI Dollar Unit accumulated earnings as of December 31, 2006 in shares of Common Stock. An aggregate of 1,271,009 shares of Common Stock (consisting of 1,250,000 shares issued under the ROI Unit Stock Plan and 21,009 shares under the 2007 Stock Incentive Plan, as described below), with a fair value at the date of grant of $38,143, were issued to IBG LLC, to be held as Treasury stock, to be distributed to employees in accordance with the following schedule, subject to the conditions below:

10% on the date of the IPO (or on the first anniversary of the IPO, in the case of U.S. ROI Unit holders who made the above-referenced elections after December 31, 2006); and

an additional 15% on each of the first six anniversaries of the date of the IPO, assuming continued employment with IBG, Inc. and compliance with other applicable covenants.

Of the fair value at the date of grant, $17,806 represented the accumulated ROI Dollar Unit value elected to be invested by employees in Common Stock and such amount was accrued for as of December 31, 2006. The remainder is being ratably accrued as compensation expense by the Company from the date of the IPO over the requisite service period represented by the aforementioned distribution schedule. Compensation expense for the 2007 ROI Unit Stock Plan and related grants under the 2007 Stock Incentive Plan, net of the effect of forfeitures, included in the unaudited condensed consolidated statements of comprehensive income for the six months ended June 30, 2011 and 2010 was $2,163 and $1,671, respectively. Estimated future compensation costs for unvested awards at June 30, 2011 are $7.6 million.

2007 Stock Incentive Plan

Under the Interactive Brokers Group, Inc. 2007 Stock Incentive Plan (the “Stock Incentive Plan” or “SIP”), up to 20.0 million shares of Common Stock may be granted and issued to directors, officers, employees, contractors and consultants of IBG, Inc. and its subsidiaries. A 10.8 million share increase in shares allocated to the SIP, first reported in the Company’s Annual Report on Form 10-K for the year ended December 31, 2010, was approved by the Company’s Compensation Committee and Board of Directors in December 2010, and was approved by stockholders at the Company’s April 2011 annual meeting. The purpose of the Stock Incentive Plan is to promote IBG, Inc.’s long-term financial success by attracting, retaining and rewarding eligible participants.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

The Stock Incentive Plan is administered by the Compensation Committee of IBG, Inc.’s Board of Directors. The Compensation Committee has discretionary authority to determine which employees are eligible to participate in the Stock Incentive Plan and establishes the terms and conditions of the awards, including the number of awards granted to each employee and all other terms and conditions applicable to such awards in individual grant agreements. Awards are expected to be made primarily through grants of Common Stock. Stock Incentive Plan awards are subject to issuance over time and may be forfeited upon an employee’s termination of employment or violation of certain applicable covenants prior to issuance, unless determined otherwise by the Compensation Committee.

The Stock Incentive Plan provides that, upon a change in control, the Compensation Committee may, at its discretion, fully vest any granted but unissued shares of Common Stock awarded under the Stock Incentive Plan, or provide that any such granted but unissued shares of Common Stock will be honored or assumed, or new rights substituted therefore by the new employer on a substantially similar basis and on terms and conditions substantially comparable to those of the Stock Incentive Plan.

IBG, Inc. granted awards of Common Stock in connection with the IPO and is expected to continue to grant awards on or about December 31 of each year following the IPO, to eligible employees as part of an overall plan of equity compensation. Shares of Common Stock granted are issued to IBG LLC, to be held as Treasury Stock, and are distributable to employees in accordance with the following schedule:

10% on the first vesting date, which approximates the anniversary of the IPO; and

an additional 15% on each of the following six anniversaries of the first vesting, assuming continued employment with IBG, Inc. and compliance with non-competition and other applicable covenants.

Shares granted to directors vest, and are distributed, over a five-year period (20% per year) commencing one year after the date of grant.

Stock Incentive Plan share grants (excluding 21,009 shares issued pursuant to the 2007 ROI Unit Stock Plan above) and the related fair values at the date of grant were:


			Fair Value at
			Date of Grant
	Shares		($000's)
In connection with IPO	927,943	$	27,847
July 31, 2007	16,665		404
December 31, 2007	1,055,206		32,876
December 31, 2008	2,065,432		35,600
December 31, 2009	2,448,031		42,796
December 31, 2010	2,513,738		43,255
	9,027,015	$	182,778

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

Total share distributions under the SIP and ROI Unit Stock Plan have been as follows:

				Shares sold by
				employees to
			Fair Value at	meet
			Date of Grant	withholding
	Total Shares		($000's)	obligations
In connection with IPO	189,617	$	5,681	45,857
2008	458,655		13,881	121,852
2009	680,164		17,898	175,362
2010	1,014,772		23,742	265,971
2011	1,350,309		29,405	370,310

The following is a summary of Stock Plan activity for the period from January 1, 2011 through June 30, 2011:

	Shares
	2007 Stock		2007 ROI Unit
	Incentive Plan		Stock Plan
Balance, December 31, 2010	7,263,140		544,613

Granted	-		-
Forfeited	(44,257	)	(51	)
Distributed	(1,164,831	)	(185,478	)
Balance, June 30, 2011	6,054,052		359,084

Estimated future grants under the Stock Incentive Plan are being accrued for ratably during each year under the ASC 718 “Graded Vesting” method. Compensation expense recognized in the unaudited condensed consolidated statements of comprehensive income for the six months ended June 30, 2011 and 2010, was $19,147 and $18,496, respectively. Estimated future compensation costs for unvested awards at June 30, 2011 are $53.6 million.

Shares granted under the 2007 ROI Unit Stock Plan and the Stock Incentive Plan are subject to forfeiture in the event an employee ceases employment with the Company. The plans provide that employees who discontinue employment with the Company without cause and continue to meet the terms of the plans’ post-employment provisions will forfeit 50% of unvested previously granted shares unless the employee is over the age of 59, in which case the employee would be eligible to receive 100% of unvested shares previously granted. Distributions of remaining shares to former employees will occur annually following the discontinuation of employment over a five (5) year vesting schedule, 12.5% in each of the first four years and 50% in the fifth year. Through June 30, 2011, a total of 11,050 shares have been distributed under these post-employment provisions. These distributions are included in the Stock Plans activity tables above.

11. Commitments, Contingencies and Guarantees

Litigation

The Company is subject to certain pending and threatened legal actions which arise out of the normal course of business. Litigation is inherently unpredictable, particularly in proceedings where claimants seek substantial or indeterminate damages, or which are in their early stages. IBG, Inc. cannot predict with certainty the actual loss or range of loss related to such legal proceedings, the manner in which they will be resolved, the timing of final resolution or the ultimate settlement. Consequently, IBG, Inc. cannot estimate losses or ranges of losses related to such legal matters, even in instances where it is reasonably possible that a future loss will be incurred. Although the results of legal actions cannot be predicted with certainty, it is the opinion of management that the resolution of these actions is not expected to have a material adverse effect, if any, on our business or financial condition, but may have a material impact on the results of operations for a given period.

On February 3, 2010, Trading Technologies International, Inc. ("Trading Technologies") filed a complaint in the United

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

States District Court for the Northern District of Illinois, Eastern Division, against Interactive Brokers Group, Inc., IBG LLC, IBG Holdings LLC, and Interactive Brokers LLC. Thereafter, Trading Technologies dismissed Interactive Brokers Group, Inc. and IBG Holdings LLC from the case, leaving only IBG LLC and Interactive Brokers LLC as defendants ("Defendants"). The operative complaint, as amended, alleges that the Defendants have infringed and continue to infringe twelve U.S. patents held by Trading Technologies. Trading Technologies is seeking, among other things, unspecified damages and injunctive relief. The case is in the pleadings stage. While it is too early to predict the outcome of the matter, we believe we have meritorious defenses to the allegations made in the complaint and intend to defend ourselves vigorously against them. However, litigation is inherently uncertain and there can be no guarantee that the Company will prevail or that the litigation can be settled on favorable terms

IBG, Inc. accounts for potential losses related to litigation in accordance with ASC 450, Contingencies. As of June 30, 2011 and December 31, 2010, reserves provided for potential losses related to litigation matters were not material.

Guarantees

Certain of the Operating Companies provide guarantees to securities clearing houses and exchanges which meet the accounting definition of a guarantee under ASC 460, Guarantees. Under the standard membership agreement, members are required to guarantee collectively the performance of other members. Under the agreements, if another member becomes unable to satisfy its obligations to the clearinghouse, other members would be required to meet shortfalls. In the opinion of management, the Operating Companies’ liability under these arrangements is not quantifiable and could exceed the cash and securities they have posted as collateral. However, the potential for these Operating Companies to be required to make payments under these arrangements is remote. Accordingly, no contingent liability is carried in the unaudited condensed consolidated statements of financial condition for these arrangements.

In connection with its retail brokerage business, IB LLC performs securities and commodities execution, clearance and settlement on behalf of its customers for whom it commits to settle trades submitted by such customers with the respective clearing houses. If a customer fails to fulfill its obligation, IB LLC must fulfill the customer’s obligation with the trade counterparty. No contingent liability is carried on the unaudited condensed consolidated statements of financial condition for such customer obligations.

Other Commitments

Certain clearing houses and clearing banks and firms used by certain Operating Companies are given a security interest in certain assets of those Operating Companies held by those clearing organizations. These assets may be applied to satisfy the obligations of those Operating Companies to the respective clearing organizations.

12. Segment and Geographic Information

IBG, Inc. operates in two business segments, market making and electronic brokerage. The Company conducts its market making business principally through its Timber Hill subsidiaries on the world’s leading exchanges and market centers, primarily in exchange-traded equities, equity options and equity-index options and futures. IBG, Inc. conducts its electronic brokerage business through its Interactive Brokers subsidiaries, which provide electronic execution and clearing services to customers worldwide.

There are significant transactions and balances between the Operating Companies, primarily as a result of certain Operating Companies holding exchange or clearing organization memberships, which are utilized to provide execution and clearing services to affiliates. Charges for transactions between segments are designed to approximate full costs. Intra-segment and intra-region income and expenses and related balances have been eliminated in this segment and geographic information to accurately reflect the external business conducted in each segment or geographical region. Corporate items include non-allocated corporate income and expenses that are not attributed to segments for performance measurement, corporate assets and eliminations.

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financials Statements (Continued)

(dollars in thousands, except shares and per share amounts, unless otherwise noted)

Management believes that the following information by business segment provides a reasonable representation of each segment’s contribution to total net revenues and income before income taxes for the three and six months ended June 30, 2011 and 2010, and to total assets as of June 30, 2011 and December 31, 2010:

		Three months ended					Six months ended
		June 30,					June 30,
		2011		2010			2011			2010
Net revenues:
Market making	$	125,726	$	81,644		$	328,064		$	164,425
Electronic brokerage		169,715		144,581			333,375			271,773
Corporate and eliminations		1,499		(89	)		3,389			508
Total net revenues	$	296,940	$	226,136		$	664,828		$	436,706

Income before income taxes:
Market making	$	59,186	$	3,889		$	193,852		$	9,345
Electronic brokerage		88,973		72,324			179,059			136,696
Corporate and eliminations		985		(4,137	)		(1,795	)		(9,052	)
Total income before income taxes	$	149,144	$	72,076		$	371,116		$	136,989


		June 30,		December 31,
		2011		2010
Segment assets:
Market making	$	<