10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_________________________________

FORM 10-Q

_________________________________

(Mark One)
þ	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2021 OR
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
‎(State or other jurisdiction of
‎incorporation or organization) 30-0390693
‎(I.R.S. Employer
‎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 þ No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes þ No o

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

Large accelerated filer þ Accelerated filer o Non-accelerated filer o
‎ Smaller reporting company o Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

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

Title of each class	Trading Symbol	Name of the exchange on which registered
Common Stock, par value $.01 per share	IBKR	The Nasdaq Global Select Market

As of August 5, 2021, there were 98,143,146 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.

QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED JUNE 30, 2021

Table of Contents

PART I	FINANCIAL INFORMATION
ITEM 1.	Financial Statements (Unaudited)
	Condensed Consolidated Statements of Financial Condition	2
	Condensed Consolidated Statements of Comprehensive Income	3
	Condensed Consolidated Statements of Cash Flows	4
	Condensed Consolidated Statements of Changes in Equity	5
	Notes to Condensed Consolidated Financial Statements	7
ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	38
ITEM 3.	Quantitative and Qualitative Disclosures about Market Risk	63
ITEM 4.	Controls and Procedures	67
PART II.	OTHER INFORMATION
ITEM 1.	Legal Proceedings	68
ITEM 1A.	Risk Factors	68
ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds	68
ITEM 3.	Defaults upon Senior Securities	68
ITEM 5.	Other Information	69
ITEM 6.	Exhibits	70
	Signature

i

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS (Unaudited)

Interactive Brokers Group, Inc. and Subsidiaries

Condensed Consolidated Statements of Financial Condition

(Unaudited)

	June 30,		December 31,
(in millions, except share amounts)	2021		2020
Assets
Cash and cash equivalents	$	3,218	$	4,292
Cash - segregated for regulatory purposes		22,099		15,903
Securities - segregated for regulatory purposes		15,635		27,821
Securities borrowed		3,630		4,956
Securities purchased under agreements to resell		4,166		792
Financial instruments owned, at fair value
Financial instruments owned		657		544
Financial instruments owned and pledged as collateral		69		86
Total financial instruments owned, at fair value		726		630
Receivables
Customers, less allowance for credit losses of $10 and $17 as of June 30, 2021 and December 31, 2020		49,954		39,333
Brokers, dealers and clearing organizations		3,983		1,254
Interest		108		104
Total receivables		54,045		40,691
Other assets		812		594
Total assets	$	104,331	$	95,679
Liabilities and equity
Short-term borrowings	$	425	$	118
Securities loaned		11,580		9,838
Financial instruments sold, but not yet purchased, at fair value		191		153
Payables
Customers		81,452		75,882
Brokers, dealers and clearing organizations		207		182
Affiliate		199		199
Accounts payable, accrued expenses and other liabilities		340		298
Interest		9		6
Total payables		82,207		76,567
Total liabilities		94,403		86,676
Commitments, contingencies and guarantees (see Note 13)
Equity
Stockholders’ equity
Common stock, $0.01 par value per share
Class A – Authorized - 1,000,000,000, Issued - 92,220,818 and 90,909,889 shares, Outstanding – 92,045,760 and 90,773,105 shares as of June 30, 2021 and December 31, 2020		1		1
Class B – Authorized, Issued and Outstanding – 100 shares as of June 30, 2021 and December 31, 2020		—		—
Additional paid-in capital		1,277		1,244
Retained earnings		864		683
Accumulated other comprehensive income, net of income taxes of $0 and $0 as of June 30, 2021 and December 31, 2020		14		26
Treasury stock, at cost, 175,058 and 136,784 shares as of June 30, 2021 and December 31, 2020		(6)		(3)
Total stockholders’ equity		2,150		1,951
Noncontrolling interests		7,778		7,052
Total equity		9,928		9,003
Total liabilities and equity	$	104,331	$	95,679

See accompanying notes to the condensed consolidated financial statements.

‎

2

Interactive Brokers Group, Inc. and Subsidiaries

Condensed Consolidated Statements of Comprehensive Income

(Unaudited)

	Three Months Ended June 30,				Six Months Ended June 30,
(in millions, except share or per share amounts)	2021		2020		2021		2020
Revenues
Commissions	$	307	$	276	$	719	$	545
Other fees and services		55		40		111		78
Other income (loss)		118		27		238		(4)
Total non-interest income		480		343		1,068		619
Interest income		307		244		697		613
Interest expense		(33)		(48)		(118)		(161)
Total net interest income		274		196		579		452
Total net revenues		754		539		1,647		1,071
Non-interest expenses
Execution, clearing and distribution fees		54		76		122		153
Employee compensation and benefits		96		82		193		162
Occupancy, depreciation and amortization		19		17		39		34
Communications		8		7		16		13
General and administrative		35		132		94		169
Customer bad debt		1		3		3		10
Total non-interest expenses		213		317		467		541
Income before income taxes		541		222		1,180		530
Income tax expense		35		15		88		33
Net income		506		207		1,092		497
Less net income attributable to noncontrolling interests		414		175		893		419
Net income available for common stockholders	$	92	$	32	$	199	$	78
Earnings per share
Basic	$	1.01	$	0.41	$	2.19	$	1.01
Diluted	$	1.00	$	0.40	$	2.17	$	1.00
Weighted average common shares outstanding
Basic		91,365,234		77,357,609		91,078,868		77,054,388
Diluted		92,199,169		78,031,462		91,984,246		77,799,963
Comprehensive income
Net income available for common stockholders	$	92	$	32	$	199	$	78
Other comprehensive income
Cumulative translation adjustment, before income taxes		5		4		(12)		(3)
Income taxes related to items of other comprehensive income		—		—		—		—
Other comprehensive income (loss), net of tax		5		4		(12)		(3)
Comprehensive income available for common stockholders	$	97	$	36	$	187	$	75
Comprehensive income attributable to noncontrolling interests
Net income attributable to noncontrolling interests	$	414	$	175	$	893	$	419
Other comprehensive income - cumulative translation adjustment		16		18		(43)		(13)
Comprehensive income attributable to noncontrolling interests	$	430	$	193	$	850	$	406

See accompanying notes to the condensed consolidated financial statements.

3

Interactive Brokers Group, Inc. and Subsidiaries

Condensed Consolidated Statements of Cash Flows

(Unaudited)

	Six Months Ended June 30,
(in millions)	2021		2020
Cash flows from operating activities
Net income	$	1,092	$	497
Adjustments to reconcile net income to net cash from operating activities
Deferred income taxes		29		10
Depreciation and amortization		25		20
Amortization of right-of-use assets		11		10
Employee stock plan compensation		34		29
Unrealized (gain) loss on other investments, net		(225)		2
Bad debt expense		3		10
Shares distributed to customers under IBKR Promotions		4		—
Change in operating assets and liabilities
Securities - segregated for regulatory purposes		12,186		(15,626)
Securities borrowed		1,326		(920)
Securities purchased under agreements to resell		(3,374)		1,744
Financial instruments owned, at fair value		(86)		1,020
Receivables from customers		(10,624)		5,616
Other receivables		(2,733)		(633)
Other assets		(17)		(1)
Securities loaned		1,742		1,446
Securities sold under agreement to repurchase		—		(1,909)
Financial instruments sold, but not yet purchased, at fair value		38		(223)
Payable to customers		5,570		12,548
Other payables		57		6
Net cash provided by operating activities		5,058		3,646
Cash flows from investing activities
Purchases of other investments		(4)		(2)
Distributions received and proceeds from sales of other investments		4		1
Purchase of property, equipment and intangible assets		(38)		(22)
Net cash used in investing activities		(38)		(23)
Cash flows from financing activities
Short-term borrowings, net		151		123
Dividends paid to stockholders		(18)		(15)
Distributions from IBG LLC to noncontrolling interests		(131)		(182)
Repurchases of common stock for employee tax withholdings under stock incentive plans		(27)		(17)
Proceeds from the sale of treasury stock		26		18
Issuances of senior notes		1,237		—
Redemptions of senior notes		(1,081)		—
Payments made under the Tax Receivable Agreement		—		(17)
Net cash used in financing activities		157		(90)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(55)		(16)
Net increase in cash, cash equivalents, and restricted cash		5,122		3,517
Cash, cash equivalents, and restricted cash at beginning of period		20,195		12,282
Cash, cash equivalents, and restricted cash at end of period	$	25,317	$	15,799
Cash, cash equivalents, and restricted cash
Cash and cash equivalents		3,218		3,115
Cash segregated for regulatory purposes		22,099		12,684
Cash, cash equivalents, and restricted cash at end of period	$	25,317	$	15,799
Supplemental disclosures of cash flow information
Cash paid for interest	$	115	$	187
Cash paid for taxes, net	$	43	$	21
Cash paid for amounts included in lease liabilities	$	12	$	10
Non-cash financing activities
Adjustments to additional paid-in capital for changes in proportionate ownership in IBG LLC	$	24	$	21
Adjustments to noncontrolling interests for changes in proportionate ownership in IBG LLC	$	(24)	$	(21)

See accompanying notes to the condensed consolidated financial statements.

4

Interactive Brokers Group, Inc. and Subsidiaries

Condensed Consolidated Statements of Changes in Equity

Six Months Ended June 30, 2021

(Unaudited)

	Class A Common Stock									Accumulated
				Additional						Other		Total		Non-
	Issued	Par		Paid-In		Treasury		Retained		Comprehensive		Stockholders'		controlling		Total
(in millions, except share amounts)	Shares	Value		Capital		Stock		Earnings		Income		Equity		Interests		Equity
Balance, January 1, 2021	90,909,889	$	1	$	1,244	$	(3)	$	683	$	26	$	1,951	$	7,052	$	9,003
Issuance of common stock - IBKR Promotion	50,000						(3)						(3)		3		—
Net distribution of common stock - IBKR Promotion							2						2				2
Compensation for stock grants vesting in the future					4								4		13		17
Dividends paid to stockholders									(9)				(9)				(9)
Distributions from IBG LLC to noncontrolling interests													—		(86)		(86)
Adjustments for changes in proportionate ownership in IBG LLC					1								1		(1)		—
Comprehensive income									107		(17)		90		420		510
Balance, March 31, 2021	90,959,889	$	1	$	1,249	$	(4)	$	781	$	9	$	2,036	$	7,401	$	9,437
Common stock distributed pursuant to stock incentive plans	1,210,929												—
Issuance of common stock - IBKR Promotion	50,000				1		(4)						(3)		3		—
Net distribution of common stock - IBKR Promotion							2						2				2
Compensation for stock grants vesting in the future					4								4		13		17
Repurchases of common stock for employee tax withholdings under stock incentive plans							(27)						(27)				(27)
Sales of treasury stock							27						27		(1)		26
Dividends paid to stockholders									(9)				(9)				(9)
Distributions from IBG LLC to noncontrolling interests													—		(45)		(45)
Adjustments for changes in proportionate ownership in IBG LLC					23								23		(23)		—
Comprehensive income									92		5		97		430		527
Balance, June 30, 2021	92,220,818	$	1	$	1,277	$	(6)	$	864	$	14	$	2,150	$	7,778	$	9,928

‎

5

Interactive Brokers Group, Inc. and Subsidiaries

Condensed Consolidated Statements of Changes in Equity

Six Months Ended June 30, 2020

(Unaudited)

	Class A Common Stock									Accumulated
				Additional						Other		Total		Non-
	Issued	Par		Paid-In		Treasury		Retained		Comprehensive		Stockholders'		controlling		Total
(in millions, except share amounts)	Shares	Value		Capital		Stock		Earnings		Income		Equity		Interests		Equity
Balance, January 1, 2020	76,889,040	$	1	$	934	$	(3)	$	520	$	—	$	1,452	$	6,488	$	7,940
Common stock distributed pursuant to stock incentive plans	311												—				—
Compensation for stock grants vesting in the future					3								3		13		16
Dividends paid to stockholders									(8)				(8)				(8)
Distributions from IBG LLC to noncontrolling interests													—		(53)		(53)
Comprehensive income									46		(7)		39		213		252
Balance, March 31, 2020	76,889,351	$	1	$	937	$	(3)	$	558	$	(7)	$	1,486	$	6,661	$	8,147
Common stock distributed pursuant to stock incentive plans	1,297,716												—				—
Compensation for stock grants vesting in the future					2								2		11		13
Repurchases of common stock for employee tax withholdings under stock incentive plans							(17)						(17)				(17)
Sales of treasury stock							17						17		1		18
Dividends paid to stockholders									(7)				(7)				(7)
Distributions from IBG LLC to noncontrolling interests													—		(129)		(129)
Adjustments for changes in proportionate ownership in IBG LLC					21								21		(21)		—
Comprehensive income									32		4		36		193		229
Balance, June 30, 2020	78,187,067	$	1	$	960	$	(3)	$	583	$	(3)	$	1,538	$	6,716	$	8,254

See accompanying notes to the condensed consolidated financial statements.

6

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

1.  Organization of Business

Interactive Brokers Group, Inc. (“IBG, Inc.”) is a Delaware holding company whose primary asset is its ownership of approximately 22.0% of the membership interests of IBG LLC, which, in turn, owns operating subsidiaries (collectively, “IBG LLC”). IBG, Inc. together with IBG LLC and its consolidated subsidiaries (collectively, “the Company”), is an automated global electronic broker specializing in executing and clearing trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds and exchange traded funds (“ETFs”) on more than 135 electronic exchanges and market centers around the world and offering custody, prime brokerage, securities and margin lending services to customers. In the United States of America (“U.S.”), the Company conducts its business primarily from its headquarters in Greenwich, Connecticut and from Chicago, Illinois. Abroad, the Company conducts its business through offices located in Canada, the United Kingdom, Ireland, Luxembourg, Switzerland, Hungary, India, China (Hong Kong and Shanghai), Japan, Singapore, and Australia. As of June 30, 2021, the Company had 2,429 employees worldwide.

IBG LLC is a Connecticut limited liability company that conducts its business through its significant operating subsidiaries: Interactive Brokers LLC (“IB LLC”); Interactive Brokers Canada Inc. (“IBC”); Interactive Brokers (U.K.) Limited (“IBUK”); Interactive Brokers Ireland Limited (“IBIE”); Interactive Brokers Luxembourg SARL (“IBLUX”); IBKR Financial Services AG (“IBKRFS”); Interactive Brokers Central Europe Zrt. (“IBCE”); Interactive Brokers (India) Private Limited (“IBI”), Interactive Brokers Hong Kong Limited (“IBHK”), Interactive Brokers Securities Japan, Inc. (“IBSJ”), Interactive Brokers Singapore Private Limited ("IBSG"), and Interactive Brokers Australia Pty Limited (“IBA”).

Certain of the operating subsidiaries are members of various securities and commodities exchanges in North America, Europe and the Asia/Pacific region and are subject to regulatory capital and other requirements (see Note 15). IB LLC, IBC, IBUK, IBIE, IBLUX, IBCE, IBI, IBHK, IBSJ, IBSG, and IBA carry securities accounts for customers or perform custodial functions relating to customer securities.

2.  Significant Accounting Policies

Basis of Presentation

These condensed consolidated financial statements are presented in U.S. dollars and have been prepared in accordance with accounting principles generally accepted in the U.S. (“U.S. GAAP”) and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding financial reporting with respect to Form 10-Q.

These condensed consolidated financial statements are unaudited and should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s 2020 Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the SEC on March 1, 2021. The condensed consolidated financial information as of December 31, 2020 has been derived from the audited financial statements not included herein.

These condensed consolidated financial statements include the accounts of the Company and its consolidated subsidiaries and reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary for the fair presentation of the results for the periods presented. The operating results for interim periods are not necessarily indicative of the operating results for the entire year.

In March 2020, the World Health Organization recognized the outbreak of the Coronavirus Disease 2019 (“COVID-19”) caused by a novel strain of the coronavirus as a pandemic. The pandemic has affected all countries in which the Company operates. The response of governments and societies to the COVID-19 pandemic, which includes temporary closures of certain businesses; social distancing; travel restrictions, “shelter in place” and other governmental regulations; and reduced consumer spending due to job losses, has significantly impacted volatility in the financial, commodities and energy markets, and general economic conditions.

The effects of the COVID-19 pandemic on the Company’s financial results which may have lasting effects as more investors are brought into the financial markets can be summarized as follows: (1) higher commission revenue due to increased trading activity and a higher rate of customer accounts opened throughout 2020 and into 2021; and (2) generally lower net interest margin resulting from lower benchmark interest rates.

The impact of the COVID-19 pandemic on the Company’s future financial results remains uncertain and currently cannot be quantified, as it will depend on numerous evolving factors that currently cannot be accurately predicted, including, but not limited to the duration and spread of the pandemic; its impact on the Company’s customers, employees and vendors; governmental actions in response to the pandemic; and the overall impact of the pandemic in the economy and society; among other factors. Any of these

7

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

events could have significant accounting and financial reporting implications (i.e., reassessing accounting estimates related to credit losses, valuation of certain investments, deferred tax assets and contingency reserves). The Company has reviewed its assumptions related to the above estimates and have not made any adjustments.

Principles of Consolidation, including Noncontrolling Interests

These 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 IBG LLC’s operations. In accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 810, “Consolidation,” the Company consolidates IBG LLC’s financial statements and records the interests in IBG LLC that it does not own as noncontrolling interests.

The Company’s policy is to consolidate all other entities in which it owns more than 50% unless it does not have control. All inter-company balances and transactions have been eliminated.

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 these condensed consolidated financial statements and accompanying notes. These estimates and assumptions are based on judgment and the best available information at the time. Therefore, actual results could differ materially from those estimates. Such estimates include the allowance for credit losses, valuation of certain investments, compensation accruals, current and deferred income taxes, and contingency reserves.

Fair Value

Substantially all of the Company’s assets and liabilities, including financial instruments, are carried at fair value based on published market prices and are marked to market, or are assets and liabilities which are short-term in nature and are carried at amounts that approximate fair value.

The Company applies the fair value hierarchy in accordance with FASB ASC Topic 820, “Fair Value Measurement” (“ASC Topic 820”), 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 for similar assets in an active market, 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.
Level 3	Prices or valuations that require inputs that are both significant to fair value measurement and unobservable.

Financial instruments owned, at fair value and financial instruments sold, but not yet purchased, at fair value are generally classified as Level 1 of the fair value hierarchy. The Company’s 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 active listed stocks, options, warrants, and U.S. and foreign government securities. The Company does not adjust quoted prices for financial instruments classified as Level 1 of the fair value hierarchy, 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 are valued using broadly distributed bank and broker prices, and are classified as Level 2 of the fair value hierarchy since inputs to their valuation can be generally corroborated by market data. Precious metals are valued using an internal model, which incorporates the exchange-traded futures price of the underlying instruments, benchmark interest rates and estimated storage costs, and are classified as Level 2 of the fair value hierarchy since the significant inputs to their valuation are observable. Other securities that are not traded in active markets are also classified as Level 2 of the fair value hierarchy. Level 3 financial instruments are comprised of securities that have been delisted or otherwise are no longer tradable in active markets and have been valued by the Company based on internal estimates.

‎

8

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

Earnings per Share

Earnings per share (“EPS”) is computed in accordance with FASB ASC Topic 260, “Earnings per Share.” Basic EPS is computed by dividing the net income available for common stockholders by the weighted average number of shares outstanding for that period. Diluted EPS is calculated by dividing the net income available for common stockholders by the diluted weighted average shares outstanding for that period. Diluted EPS includes the determinants of basic EPS and, in addition, reflects the dilutive effect of shares of common stock estimated to be distributed in the future under the Company’s stock-based compensation plans, with no adjustments to net income available for common stockholders for potentially dilutive common shares.

Current Expected Credit Losses

The Company follows FASB ASC Topic 326 – “Financial Instruments – Credit Losses” (“ASC Topic 326”) which applies to financial assets measured at amortized cost, held-to-maturity debt securities and off-balance sheet credit exposures. For on-balance sheet assets, an allowance must be recognized at the origination or purchase of in-scope assets and represents the expected credit losses over the contractual life of those assets. Expected credit losses on off-balance sheet credit exposures must be estimated over the contractual period the Company is exposed to credit risk as a result of a present obligation to extend credit. The impact to the current period is not material since the Company’s in-scope assets are primarily subject to collateral maintenance provisions for which the Company elected to apply the practical expedient of reporting the difference between the fair value of collateral and the amortized cost for the in-scope assets as the allowance for current expected credit losses.

Cash and Cash Equivalents

Cash and cash equivalents consist of deposits with banks and all highly liquid investments, with maturities of three months or less, that are not segregated and deposited for regulatory purposes or to meet margin requirements at clearing houses and clearing banks.

Cash and Securities – Segregated for Regulatory Purposes

As a result of customer activities, certain operating subsidiaries are obligated by rules mandated by their primary regulators to segregate or set aside cash or qualified securities to satisfy such regulations, which have been promulgated to protect customer assets. Restricted cash represents cash and cash equivalents that are subject to withdrawal or usage restrictions. Cash segregated for regulatory purposes meets the definition of restricted cash and is included in “cash, cash equivalents, and restricted cash” in the condensed consolidated statements of cash flows.

The table below presents the composition of the Company’s securities segregated for regulatory purposes for the periods indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
U.S. government securities	$	3,925	$	4,750
Securities purchased under agreements to resell 1		11,710		23,071
	$	15,635	$	27,821

________________________

(1)These balances are collateralized by U.S. government securities.

Securities Borrowed and Securities Loaned

Securities borrowed and securities loaned are recorded at the amount of the cash collateral advanced or received. Securities borrowed transactions require the Company to provide counterparties with collateral, which may be in the form of cash, letters of credit or other securities. With respect to securities loaned, the Company 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. The Company monitors the market value of securities borrowed and loaned on a daily basis, with additional collateral obtained or refunded as permitted contractually. The Company’s policy is to net, in the condensed consolidated statements of financial condition, securities borrowed and securities loaned entered into with the same counterparty that meet the offsetting requirements prescribed in FASB ASC Topic 210-20, “Balance Sheet – Offsetting” (“ASC Topic 210-20”).

Securities lending fees received and paid by the Company are included in interest income and interest expense, respectively, in the condensed consolidated statements of comprehensive income.

9

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase

Securities purchased under agreements to resell and securities sold under agreements to repurchase, which are reported as collateralized financing transactions, are recorded at contract value, which approximates fair value. To ensure that the fair value of the underlying collateral remains sufficient, the collateral is valued daily with additional collateral obtained or excess collateral returned, as permitted under contractual provisions. The Company’s policy is to net, in the condensed consolidated statements of financial condition, securities purchased under agreements to resell transactions and securities sold under agreements to repurchase transactions entered into with the same counterparty that meet the offsetting requirements prescribed in ASC Topic 210-20.

Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased, at Fair Value

Financial instrument transactions are accounted for on a trade date basis. Financial instruments owned and financial instruments sold, but not yet purchased are stated at fair value based upon quoted market prices, or if not available, are valued by the Company based on internal estimates (see Fair Value above). The Company’s financial instruments pledged to counterparties where the counterparty has the right, by contract or custom, to sell or repledge the financial instruments are reported as financial instruments owned and pledged as collateral in the condensed consolidated statements of financial condition.

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 condensed consolidated statements of financial condition. Amounts receivable from customers that are determined by management to be uncollectible are recorded as customer bad debt expense in the condensed consolidated statements of comprehensive income.

Receivables from and Payables to Brokers, Dealers and Clearing Organizations

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

Investments

The Company makes certain strategic investments related to its business which are included in other assets in the condensed consolidated statements of financial condition. The Company accounts for these investments as follows:

Under the equity method of accounting as required under FASB ASC Topic 323, “Investments – Equity Method and Joint Ventures.” These investments, including where the investee is a limited partnership or limited liability company, are recorded at the fair value amount of the Company’s initial investment and are adjusted each period for the Company’s share of the investee’s income or loss. Contributions paid to and distributions received from equity method investees are recorded as additions or reductions, respectively, to the respective investment balance.

At fair value if the investment in equity securities has a readily determinable fair value.

At adjusted cost if the investment does not have a readily determinable fair value. Adjusted cost represents the historical cost, less impairment, if any. If the Company identifies observable price changes in orderly transactions for the identical or a similar investment of the same issuer, the Company measures the equity security at fair value as of the date that the observable transaction occurred in accordance with FASB ASC Topic 321, “Investments in Equity Securities.”

A judgmental aspect of accounting for investments is evaluating whether a decline in the value of an investment has occurred. The evaluation of an 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. Most of the Company’s equity investments do not have readily determinable market values. All investments are reviewed for changes in circumstances or occurrence of events that suggest the Company’s investment may not be recoverable. An impairment loss, if any, is recognized in the period the determination is made.

10

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

The table below presents the composition of the Company’s investments for the periods indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
Equity method investments1	$	14	$	11
Investments in equity securities at adjusted cost2		13		10
Investments in equity securities at fair value2		291		80
Investments in exchange memberships and equity securities of certain exchanges2		3		3
	$	321	$	104

________________________

(1)The Company’s share of income or losses is included in other income in the condensed consolidated statements of comprehensive income.

(2)These investments do not qualify for equity method of accounting and the dividends received are included in other income in the condensed consolidated statements of comprehensive income.

Property, Equipment, and Intangible Assets

Property, equipment, and intangible assets, which are included in other assets in the condensed consolidated statements of financial condition, consist of leasehold improvements, computer equipment, software developed for the Company’s internal use, 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. Intangible assets with a finite life are amortized on a straight-line basis over their estimated useful lives of three years, and tested for recoverability whenever events indicate that the carrying amounts may not be recoverable. Qualifying costs for internally developed software are capitalized and amortized over the expected useful life of the developed software, not to exceed three years. Upon retirement or disposition of property and equipment, the cost and related accumulated depreciation are removed from the condensed consolidated statements of financial condition and any resulting gain or loss is recorded in other income in the condensed consolidated statements of comprehensive income. Fully depreciated (or amortized) assets are retired periodically throughout the year.

Leases

The Company reviews all relevant contracts to determine if the contract contains a lease at its inception date. A contract contains a lease if the contract conveys to the company the right to control the use of an underlying asset for a period of time in exchange for consideration. If the Company determines that a contract contains a lease, it recognizes, in the condensed consolidated statements of financial condition, a lease liability and a corresponding right-of-use asset on the commencement date of the lease. The lease liability is initially measured at the present value of the future lease payments over the lease term using the rate implicit in the lease or, if not readily determinable, the Company’s secured incremental borrowing rate. An operating lease right-of-use asset is initially measured at the value of the lease liability minus any lease incentives and initial direct costs incurred plus any prepaid rent.

The Company’s leases are classified as operating leases and consist of real estate leases for office space, data centers and other facilities. Each lease liability is measured using the Company’s secured incremental borrowing rate, which is based on an internally developed yield curve using interest rates of third parties’ corporate debt issued with a similar risk profile as the Company and a duration similar to the lease term. The Company’s leases have remaining terms of one to twelve years, some of which include options to extend the lease term, and some of which include options to terminate the lease upon notice. The Company considers these options when determining the lease term used to calculate the right-of-use asset and the lease liability when the Company is reasonably certain it will exercise such option.

The Company’s operating leases contain both lease components and non-lease components. Non-lease components are distinct elements of a contract that are not related to securing the use of the underlying assets, such as common area maintenance and other management

11

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

costs. The Company elected to measure the lease liability by combining the lease and non-lease components as a single lease component. As such, the Company includes the fixed payments and any payments that depend on a rate or index that relate to the lease and non-lease components in the measurement of the lease liability. Some of the non-lease components are variable in nature and not based on an index or rate, and as a result, are not included in the measurement of the right-of-use asset or lease liability.

Operating lease expense is recognized on a straight-line basis over the lease term and is included in occupancy, depreciation and amortization, expense in the Company’s condensed consolidated statements of comprehensive income.

Comprehensive Income and Foreign Currency Translation

The Company’s operating results are reported in the condensed consolidated statements of comprehensive income pursuant to FASB ASC Topic 220, “Comprehensive Income.”

Comprehensive income consists of two components: net income and other comprehensive income (“OCI”). The Company’s OCI is comprised of gains and losses resulting from translating foreign currency financial statements of non-U.S. subsidiaries, net of related income taxes, where applicable. In general, the practice and intention of the Company is to reinvest the earnings of its non-U.S. subsidiaries in those operations, therefore tax is usually not accrued on OCI.

The Company’s non-U.S. domiciled subsidiaries have a functional currency 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. Adjustments that result from translating amounts from a subsidiary’s functional currency to the U.S. dollar (as described above) are reported net of tax, where applicable, in accumulated OCI in the condensed consolidated statements of financial condition.

Revenue Recognition

Commissions

Commissions earned for executing and/or clearing transactions are accrued on a trade date basis and are reported as commissions in the condensed consolidated statements of comprehensive income. Commissions also include payments for order flow income received from IBKR Lite^SM liquidity providers. The Company’s IBKR Lite^SM offering provides commission-free trades on U.S. exchange-listed stocks and ETFs and generates no commission revenues from customers on these trades. See Note 8 for further information on revenue from contracts with customers.

Other Fees and Services

The Company earns fee income on services provided to customers, which includes market data fees, risk exposure fees, payments for order flow from exchange-mandated programs, minimum activity fees, and other fees and services charged to customers. Fee income is recognized either daily or monthly. See Note 8 for further information on revenue from contracts with customers.

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, which are recorded on an accrual basis and are included in interest income and interest expense, respectively, in the condensed consolidated statements of comprehensive income.

Principal Transactions

Principal transactions include gains and losses as a result of changes in the fair value of financial instruments owned, at fair value, financial instruments sold, but not yet purchased, at fair value, and other investments measured at fair value (i.e., unrealized gains and losses) and realized gains and losses related to the Company’s principal transactions. Included are net gains and losses on stocks, options, U.S. and foreign government securities, futures, foreign exchange, precious metals, and other derivative instruments. Dividends are integral to the valuation of stocks. Accordingly, dividends income and expense attributable to financial instruments owned, at fair value and financial instruments sold, but not yet purchased, at fair value, are reported on a net basis in other income in the condensed consolidated statements of comprehensive income.

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12

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

Foreign Currency Gains and Losses

Foreign currency balances are assets and liabilities in currencies other than the Company’s functional currency. At every reporting date, the Company revalues its foreign currency balances to its functional currency at the spot exchange rate and records the associated foreign currency gains and losses. These foreign currency gains and losses are reported in the condensed consolidated statements of comprehensive income, as follows: (a) foreign currency gains and losses related to the Company’s currency diversification strategy are reported in other income; (b) foreign currency gains and losses arising from currency swap transactions are reported in interest income or interest expense; and (c) all other foreign currency gains and losses are reported in other income.

Rebates

Rebates consist of volume discounts, credits or payments received from exchanges or other market centers related to the placement and/or removal of liquidity from the marketplace and are recorded on an accrual basis. Rebates are recorded net within execution, clearing and distribution fees in the condensed consolidated statements of comprehensive income. Rebates received for trades executed on behalf of customers that elect tiered pricing are passed, in whole or part, to these customers; and such pass-through amounts are recorded net within commissions in the condensed consolidated statements of comprehensive income.

Stock-Based Compensation

The Company follows FASB ASC Topic 718, “Compensation - Stock Compensation” (“ASC Topic 718”), to account for its stock-based compensation plans. ASC Topic 718 requires all share-based payments to employees to be recognized in the consolidated financial statements using a fair value-based method. Grants, which are denominated in U.S. dollars, are communicated to employees in the year of grant, thereby establishing the fair value of each grant. The fair value of awards granted to employees are generally expensed as follows: 50% in the year of grant in recognition of the plans’ post-employment provisions (as described below) and the remaining 50% over the related vesting period utilizing the “graded vesting” method permitted under ASC Topic 718. In the case of “retirement eligible” employees (those employees older than 59), 100% of awards are expensed when granted.

Awards granted under stock-based compensation plans are subject to the plans’ post-employment provisions 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 be eligible to earn 50% of previously granted but not yet earned awards, unless the employee is over the age of 59, in which case the employee would be eligible to receive 100% of previously granted but not yet earned awards.

Income Taxes

The Company accounts for income taxes in accordance with FASB ASC Topic 740, “Income Taxes” (“ASC Topic 740”). The Company’s income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits are based on enacted tax laws (see Note 11) and reflect management’s best assessment of estimated future taxes to be paid. The Company is subject to income taxes in the U.S. and numerous foreign jurisdictions. Determining income tax expense requires significant judgment and estimates.

Deferred income tax assets and liabilities arise from temporary differences between the tax and financial statement recognition of underlying assets and liabilities. In evaluating the ability to recover deferred tax assets within the jurisdictions from which they arise, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. In projecting future taxable income, historical results are adjusted for changes in accounting policies and incorporate assumptions including the amount of future state, federal and foreign pre-tax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax-planning strategies. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates the Company is using to manage the underlying businesses. In evaluating the objective evidence that historical results provide, three years of cumulative operating income (loss) are considered. Deferred income taxes have not been provided for U.S. tax liabilities or for additional foreign taxes on the unremitted earnings of foreign subsidiaries that have been indefinitely reinvested.

The calculation of the Company’s tax liabilities involves dealing with uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across the Company’s global operations. Changes in tax laws and rates could also affect recorded deferred tax assets and liabilities in the future.

The Company records tax liabilities in accordance with ASC Topic 740 and adjusts these liabilities when management’s judgment changes as a result of the evaluation of new information not previously available. Because of the complexity of some of these uncertainties, the ultimate resolution may result in payments that are different from the current estimates of these tax liabilities. These

13

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

differences will be reflected as increases or decreases to income tax expense in the period in which new information becomes available.

The Company recognizes a tax benefit from an uncertain tax position only when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of the technical merits. A tax position that meets this standard is measured at the largest amount of benefit that will more likely than not be realized on settlement.

The Company recognizes interest related to income tax matters as interest income or interest expense and penalties related to income tax matters as income tax expense in the condensed consolidated statements of comprehensive income.

FASB Standards Adopted During 2021

Standard	Summary of guidance	Effect on financial statements
Income Taxes (Topic 740) ‎ ‎Issued December 2019	• Simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740.	• Adopted January 1, 2021. • The adoption of the changes did not have a material impact on the Company’s consolidated financial statements.

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14

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

3.  Trading Activities and Related Risks

Trading activities expose the Company 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 the Company’s risk-taking is consistent with its business strategy, its capital structure, and current and anticipated market conditions.

Market Risk

The Company 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. The Company 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. The Company uses a combination of cash instruments and exchange traded derivatives to hedge its market exposures. The Company does not apply hedge accounting. 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. The Company is subject to equity price risk primarily in financial instruments owned, at fair value and financial instruments sold, but not yet purchased, at fair value. The Company 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.

Interest Rate Risk

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

Currency Risk

Currency risk arises from the possibility that fluctuations in foreign exchange rates will impact the value of financial instruments. The Company manages this risk using spot (i.e., cash) currency transactions, currency futures contracts and currency forward contracts. The Company actively manages its currency exposure using a currency diversification strategy that is based on a defined basket of currencies internally referred to as the “GLOBAL.” These strategies minimize the fluctuation of the Company’s net worth as expressed in GLOBALs, thereby diversifying its risk in alignment with these global currencies, weighted by the Company’s view of their importance. As the Company’s financial results are reported in U.S. dollars, the change in the value of the GLOBAL as expressed in U.S. dollars affects the Company’s earnings. The impact of this currency diversification strategy in the Company’s earnings is included in other income in the condensed consolidated statements of comprehensive income.

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15

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

Credit Risk

The Company is exposed to risk of loss if a customer, counterparty or issuer fails to perform its obligations under contractual terms (“default risk”). Both cash instruments and derivatives expose the Company to default risk. The Company 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 as contracts entered into are settled directly at securities and commodities clearing houses or are settled through member firms and banks with substantial financial and operational resources. Over-the-counter transactions, such as securities lending and contracts for differences (“CFDs”), are marked to market daily and are conducted with counterparties that have undergone a thorough credit review. The Company seeks to control the risks associated with its customer margin activities by requiring customers to maintain collateral in compliance with regulatory and internal guidelines.

In the normal course of business, the Company executes, settles, and finances various customer securities transactions. Execution of these transactions includes the purchase and sale of securities which exposes the Company to default risk arising from the potential that customers or counterparties may fail to satisfy their obligations. In these situations, the Company 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, the Company may purchase the underlying security in the market and seek reimbursement for any losses from the counterparty.

For cash management purposes, the Company 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. Repos are collateralized by securities with a market value in excess of the obligation under the contract. Similarly, securities lending agreements are collateralized by deposits of cash or securities. The Company 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 the Company as permitted under contractual provisions.

Concentrations of Credit Risk

The Company’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, 2021, the Company did not have any material concentrations of credit risk outside the ordinary course of business.

Off-Balance Sheet Risks

The Company may be exposed to a risk of loss not reflected in the condensed consolidated financial statements to settle futures and certain over-the-counter contracts at contracted prices, which may require repurchase or sale of the underlying products in the market at prevailing prices. Accordingly, these transactions result in off-balance sheet risk as the Company’s cost to liquidate such contracts may exceed the amounts reported in the Company’s condensed consolidated statements of financial condition.

4.  Equity and Earnings per Share

In connection with IBG, Inc.’s initial public offering of Class A common stock (“IPO”) in May 2007, it purchased 10.0% of the membership interests in IBG LLC from IBG Holdings LLC (“Holdings”), became the sole managing member of IBG LLC and began to consolidate IBG LLC’s financial results into its financial statements. Holdings owns all of IBG, Inc.’s Class B common stock, which has voting rights in proportion to its ownership interests in IBG LLC. The table below presents the amount of IBG LLC membership interests held by IBG, Inc. and Holdings as of June 30, 2021.

	IBG, Inc.	Holdings	Total
Ownership %	22.0%	78.0%	100.0%
Membership interests	92,091,373	325,960,034	418,051,407

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Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

These condensed consolidated financial statements reflect the results of operations and financial position of IBG, Inc., including consolidation of its investment in IBG LLC and its subsidiaries. The noncontrolling interests in IBG LLC attributable to Holdings are reported as a component of total equity in the condensed consolidated statements of financial condition.

Recapitalization and Post-IPO Capital Structure

Immediately prior to and immediately following the consummation of the IPO, IBG, Inc., Holdings, 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., Holdings 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 Holdings 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, Holdings used the net proceeds to redeem 10.0% of members’ interests in Holdings in proportion to their interests. Immediately following the Recapitalization and IPO, Holdings owned approximately 90% of IBG LLC and 100% of IBG, Inc.’s Class B common stock.

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 of June 30, 2021 and December 31, 2020, 1,000,000,000 shares of Class A common stock were authorized, of which 92,220,818 and 90,909,889 shares have been issued; and 92,045,760 and 90,773,105 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, 2021 and December 31, 2020, respectively. In addition, 10,000 shares of preferred stock have been authorized, of which no shares are issued or outstanding as of June 30, 2021 and December 31, 2020, 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. Deferred tax assets were recorded as of the IPO date and in connection with subsequent redemptions of Holdings member interests in exchange for common stock. These deferred tax assets are included in other assets in the Company’s condensed consolidated statements of financial condition and are being amortized as additional deferred income tax expense over 15 years from the IPO date and from the additional redemption dates, respectively, as allowable under current tax law. As of June 30, 2021 and December 31, 2020, the unamortized balance of these deferred tax assets was $175 million and $190 million, respectively.

IBG, Inc. also entered into an agreement (the “Tax Receivable Agreement”) with Holdings to pay Holdings (for the benefit of the former members of IBG LLC) 85% of the tax savings that IBG, Inc. actually realizes as the result of tax basis increases. These payables to Holdings are reported as payable to affiliate in the Company’s condensed consolidated statements of financial condition. The remaining 15% is accounted for as a permanent increase to additional paid-in capital in the Company’s condensed consolidated statements of financial condition.

The cumulative amounts of deferred tax assets, payables to Holdings and additional paid-in capital arising from stock offerings from the date of the IPO through June 30, 2021 were $585 million, $497 million, and $88 million, respectively. Amounts payable under the Tax Receivable Agreement are payable to Holdings annually following the filing of IBG, Inc.’s federal income tax return. The Company has paid Holdings a cumulative total of $205 million through June 30, 2021 pursuant to the terms of the Tax Receivable Agreement.

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

At the time of IBG, Inc.’s IPO in 2007, three hundred sixty (360) million shares of authorized common stock were reserved for future sales and redemptions. From 2008 through 2010, Holdings redeemed 5,013,259 IBG LLC interests with a total value of $114 million, which redemptions were funded using cash on hand at IBG LLC. Upon cash redemption these IBG LLC interests were retired. From 2011 through 2020, IBG, Inc. issued 28,127,765 shares of common stock (with a fair value of $1.1 billion) directly to Holdings in exchange for an equivalent number of member interests in IBG LLC.

As a consequence of these redemption transactions, and distribution of shares to employees (see Note 10), IBG, Inc.’s interest in IBG LLC has increased to approximately 22.0%, with Holdings owning the remaining 78.0% as of June 30, 2021. The redemptions also resulted in an increase in the Holdings interest held by Mr. Thomas Peterffy and his affiliates from approximately 84.6% at the IPO to approximately 89.6% as of June 30, 2021.

17

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

On July 27, 2020, the Company filed a Prospectus Supplement on Form 424B (File Number 333-240121) with the SEC to register up to 990,000 shares of common stock, offering the opportunity for eligible persons to receive awards in the form of an offer to receive such shares by participating in one or more promotions that are designed to attract new customers to the Company’s brokerage platform, increase assets held with the Company’s brokerage business and enhance customer loyalty. During the six months ended June 30, 2021, the Company issued 100,000 shares to IBG LLC for distribution to eligible customers of certain of its subsidiaries.

On July 30, 2021, the Company filed a Prospectus Supplement on Form 424B5 with the SEC to issue 6,079,542 shares of common stock (with a fair value of $376 million) in exchange for an equivalent number of shares of member interests in IBG LLC. This issuance of shares increased the Company’s ownership in IBG LLC from 22.0% to 23.5%. This redemption also resulted in an increase in the Holdings interest held by Mr. Thomas Peterffy and his affiliates to approximately 90.6% as of July 30, 2021.

Earnings per Share

Basic earnings per share is 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 June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Basic earnings per share
Net income available for common stockholders	$	92	$	32	$	199	$	78
Weighted average shares of common stock outstanding
Class A		91,365,134		77,357,509		91,078,768		77,054,288
Class B		100		100		100		100
		91,365,234		77,357,609		91,078,868		77,054,388
Basic earnings per share	$	1.01	$	0.41	$	2.19	$	1.01

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 potentially dilutive common shares.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Diluted earnings per share
Net income available for common stockholders	$	92	$	32	$	199	$	78
Weighted average shares of common stock outstanding
Class A
Issued and outstanding		91,365,134		77,357,509		91,078,768		77,054,288
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans		833,935		673,853		905,378		745,575
Class B		100		100		100		100
		92,199,169		78,031,462		91,984,246		77,799,963
Diluted earnings per share	$	1.00	$	0.40	$	2.17	$	1.00

Member Distributions and Stockholder Dividends

During the six months ended June 30, 2021, IBG LLC made distributions totaling $167 million, to its members, of which IBG, Inc.’s proportionate share was $36 million. In March and June 2021, the Company paid quarterly cash dividends of $0.10 per share of common stock, totaling $9 million and $9 million respectively.

On July 20, 2021, the Company declared a cash dividend of $0.10 per common share, payable on September 14, 2021 to stockholders of record as of September 1, 2021.
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18

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

5.  Comprehensive Income

The table below presents comprehensive income and earnings per share on comprehensive income for the periods indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Comprehensive income available for common stockholders	$	97	$	36	$	187	$	75
Earnings per share on comprehensive income
Basic	$	1.06	$	0.46	$	2.06	$	0.97
Diluted	$	1.05	$	0.46	$	2.04	$	0.96
Weighted average common shares outstanding
Basic		91,365,234		77,357,609		91,078,868		77,054,388
Diluted		92,199,169		78,031,462		91,984,246		77,799,963

‎

19

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

6.  Financial Assets and Financial Liabilities

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The tables below present, by level within the fair value hierarchy (see Note 2), financial assets and liabilities, measured at fair value on a recurring basis for the periods indicated. As required by ASC Topic 820, financial assets and financial liabilities are classified in their entirety based on the lowest level of input that is significant to the respective fair value measurement.

	Financial Assets at Fair Value as of June 30, 2021
	Level 1		Level 2		Level 3		Total
	(in millions)
Securities segregated for regulatory purposes	$	3,925	$	—	$	—	$	3,925
Financial instruments owned, at fair value
Stocks		647		—		—		647
Options		22		—		—		22
U.S. and foreign government securities		44		—		—		44
Corporate bonds		—		—		1		1
Precious metals		—		11		—		11
Currency forward contracts		—		1		—		1
Total financial instruments owned, at fair value		713		12		1		726
Other assets - other investments at fair value		291		—		—		291
Total financial assets at fair value	$	4,929	$	12	$	1	$	4,942

	Financial Liabilities at Fair Value as of June 30, 2021
	Level 1		Level 2		Level 3		Total
	(in millions)
Financial instruments sold, but not yet purchased, at fair value
Stocks	$	147	$	—	$	—	$	147
Options		25		—		—		25
Precious metals		—		3		—		3
Currency forward contracts		—		16		—		16
Total financial instruments sold, but not yet purchased, at fair value		172		19		—		191
Total financial liabilities at fair value	$	172	$	19	$	—	$	191

	Financial Assets at Fair Value as of December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in millions)
Securities segregated for regulatory purposes	$	4,750	$	—	$	—	$	4,750
Financial instruments owned, at fair value
Stocks		558		—		1		559
Options		28		—		—		28
U.S. and foreign government securities		33		—		—		33
Corporate bonds		—		—		1		1
Currency forward contracts		—		9		—		9
Total financial instruments owned, at fair value		619		9		2		630
Other assets - other investments at fair value		80		—		—		80
Total financial assets at fair value	$	5,449	$	9	$	2	$	5,460

‎

20

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

	Financial Liabilities at Fair Value as of December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in millions)
Financial instruments sold, but not yet purchased, at fair value
Stocks	$	120	$	—	$	—	$	120
Options		26		—		—		26
Currency forward contracts		—		7		—		7
Total financial instruments sold, but not yet purchased, at fair value		146		7		—		153
Total financial liabilities at fair value	$	146	$	7	$	—	$	153

Level 3 Financial Assets and Financial Liabilities

The Company’s Level 3 financial assets are comprised of delisted and illiquid securities reported within financial instruments owned, at fair value in the condensed consolidated statements of financial condition. As of June 30, 2021, Level 3 financial assets included $1 million in corporate bonds which were not traded in active markets and were valued by the Company based on internal estimates.

Financial Assets and Liabilities Not Measured at Fair Value

The tables below represent the carrying value, fair value, and fair value hierarchy category of certain financial assets and liabilities that are not recorded at fair value in the Company's condensed consolidated statements of financial condition for the periods indicated. The tables below exclude certain financial instruments such as equity investments and all non-financial assets and liabilities.

	June 30, 2021
	Carrying ‎Value		Fair ‎Value		Level 1		Level 2		Level 3
	(in millions)
Financial assets, not measured at fair value
Cash and cash equivalents	$	3,218	$	3,218	$	3,218	$	—	$	—
Cash - segregated for regulatory purposes		22,099		22,099		22,099		—		—
Securities - segregated for regulatory purposes		11,710		11,710		—		11,710		—
Securities borrowed		3,630		3,630		—		3,630		—
Securities purchased under agreements to resell		4,166		4,166		—		4,166		—
Receivables from customers		49,954		49,954		—		49,954		—
Receivables from brokers, dealers, and clearing organizations		3,983		3,983		—		3,983		—
Interest receivable		108		108		—		108		—
Other assets		15		16		—		2		14
Total financial assets, not measured at fair value	$	98,883	$	98,884	$	25,317	$	73,553	$	14

Financial liabilities, not measured at fair value
Short-term borrowings	$	425	$	425	$	—	$	425	$	—
Securities loaned		11,580		11,580		—		11,580		—
Payables to customers		81,452		81,452		—		81,452		—
Payables to brokers, dealers and clearing organizations		207		207		—		207		—
Interest payable		9		9		—		9		—
Total financial liabilities, not measured at fair value	$	93,673	$	93,673	$	—	$	93,673	$	—

‎

21

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

	December 31, 2020
	Carrying ‎Value		Fair ‎Value		Level 1		Level 2		Level 3
	(in millions)
Financial assets, not measured at fair value
Cash and cash equivalents	$	4,292	$	4,292	$	4,292	$	—	$	—
Cash - segregated for regulatory purposes		15,903		15,903		15,903		—		—
Securities - segregated for regulatory purposes		23,071		23,071		—		23,071		—
Securities borrowed		4,956		4,956		—		4,956		—
Securities purchased under agreements to resell		792		792		—		792		—
Receivables from customers		39,333		39,333		—		39,333		—
Receivables from brokers, dealers, and clearing organizations		1,254		1,254		—		1,254		—
Interest receivable		104		104		—		104		—
Other assets		13		13		—		2		11
Total financial assets, not measured at fair value	$	89,718	$	89,718	$	20,195	$	69,512	$	11

Financial liabilities, not measured at fair value
Short-term borrowings	$	118	$	118	$	—	$	118	$	—
Securities loaned		9,838		9,838		—		9,838		—
Payables to customers		75,882		75,882		—		75,882		—
Payables to brokers, dealers and clearing organizations		182		182		—		182		—
Interest payable		6		6		—		6		—
Total financial liabilities, not measured at fair value	$	86,026	$	86,026	$	—	$	86,026	$	—

Netting of Financial Assets and Financial Liabilities

The Company’s policy is to net securities borrowed and securities loaned, and securities purchased under agreements to resell and securities sold under agreements to repurchase that meet the offsetting requirements prescribed in ASC Topic 210-20. In the tables below, the amounts of financial instruments that are not offset in the condensed consolidated statements of financial condition, but could be netted against cash or financial instruments with specific counterparties under master netting agreements, according to the terms of the agreements, including clearing houses (exchange traded options, warrants and discount certificates) or over the counter currency forward contract counterparties, are presented to provide financial statement readers with the Company’s net payable or receivable with counterparties for these financial instruments.

‎

22

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

The tables below present the netting of financial assets and of financial liabilities for the periods indicated.

	June 30, 2021
	Gross			Amounts			Net Amounts		Amounts Not Offset
	Amounts			Offset in the			Presented in		in the Condensed
	of Financial			Condensed			the Condensed		Consolidated Statements
	Assets and			Consolidated			Consolidated		of Financial Condition
	Liabilities			Statements of			Statements of		Cash or Financial
	Recognized			Financial Condition		2	Financial Condition		Instruments		Net Amount
	(in millions)
Offsetting of financial assets
Securities segregated for regulatory purposes - purchased under agreements to resell	$	11,710	1	$	—		$	11,710	$	(11,710)	$	—
Securities borrowed		3,630			—			3,630		(3,522)		108
Securities purchased under agreements to resell		4,166			—			4,166		(4,166)		—
Financial instruments owned, at fair value
Options		22			—			22		(21)		1
Currency forward contracts		1			—			1		—		1
Total	$	19,529		$	—		$	19,529	$	(19,419)	$	110

	(in millions)
Offsetting of financial liabilities
Securities loaned	$	11,580	$	—	$	11,580	$	(11,029)	$	551
Financial instruments sold, but not yet purchased, at fair value
Options		25		—		25		(21)		4
Currency forward contracts		16		—		16		—		16
Total	$	11,621	$	—	$	11,621	$	(11,050)	$	571

‎

23

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

	December 31, 2020
		Gross		Amounts			Net Amounts		Amounts Not Offset
		Amounts		Offset in the			Presented in		in the Condensed
		of Financial		Condensed			the Condensed		Consolidated Statements
		Assets and		Consolidated			Consolidated		of Financial Condition
		Liabilities		Statements of			Statements of		Cash or Financial
		Recognized		Financial Condition		2	Financial Condition		Instruments		Net Amount
	(in millions)
Offsetting of financial assets
Securities segregated for regulatory purposes - purchased under agreements to resell	$	23,071	1	$	—		$	23,071	$	(23,071)	$	—
Securities borrowed		4,956			—			4,956		(4,716)		240
Securities purchased under agreements to resell		792			—			792		(792)		—
Financial instruments owned, at fair value
Options		28			—			28		(25)		3
Currency forward contracts		9			—			9		—		9
Total	$	28,856		$	—		$	28,856	$	(28,604)	$	252

	(in millions)
Offsetting of financial liabilities
Securities loaned	$	9,838	$	—	$	9,838	$	(9,246)	$	592
Financial instruments sold, but not yet purchased, at fair value
Options		26		—		26		(25)		1
Currency forward contracts		7		—		7		—		7
Total	$	9,871	$	—	$	9,871	$	(9,271)	$	600

________________________

(1)As of June 30, 2021 and December 31, 2020, the Company had $11.7 billion and $23.1 billion, respectively, of securities purchased under agreements to resell that were segregated to satisfy regulatory requirements. These securities are included in “Securities - segregated for regulatory purposes” in the condensed consolidated statements of financial condition.
‎

(2)The Company did not have any balances eligible for netting in accordance with ASC Topic 210-20 at June 30, 2021 and December 31, 2020.

‎

24

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

Secured Financing Transactions – Maturities and Collateral Pledged

The tables below present gross obligations for securities loaned transactions by remaining contractual maturity and class of collateral pledged for the periods indicated.

	June 30, 2021
	Remaining Contractual Maturity
	Overnight		Less than		30 – 90		Over 90
	and Open		30 days		days		days		Total
	(in millions)
Securities loaned
Stocks	$	11,535	$	—	$	—	$	—	$	11,535
Corporate bonds		45		—		—		—		45
Total securities loaned	$	11,580	$	—	$	—	$	—	$	11,580

	December 31, 2020
	Remaining Contractual Maturity
	Overnight		Less than		30 – 90		Over 90
	and Open		30 days		days		days		Total
	(in millions)
Securities loaned
Stocks	$	9,811	$	—	$	—	$	—	$	9,811
Corporate bonds		27		—		—		—		27
Total securities loaned	$	9,838	$	—	$	—	$	—	$	9,838

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 typical agreements, the Company is permitted to sell or repledge securities received as collateral and use these securities to secure securities purchased under agreements to resell, enter into securities lending transactions or deliver these securities to counterparties to cover short positions.

The Company also engages in securities financing transactions with and for customers through margin lending. 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 the Company’s policy and as enforced by such systems, customers are required to deposit additional collateral or reduce positions, when necessary, to avoid automatic liquidation of their positions.

Margin loans are extended to customers 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 customer account and an overall evaluation of the customer’s 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. As of June 30, 2021 and December 31, 2020, approximately $50.0 billion and $39.3 billion, respectively, of customer margin loans were outstanding.

‎

25

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

The table below presents a summary of the amounts related to collateralized transactions for the periods indicated.

	June 30, 2021				December 31, 2020
	Permitted		Sold or		Permitted		Sold or
	to Repledge		Repledged		to Repledge		Repledged
	(in millions)
Securities lending transactions	$	67,033	$	5,998	$	64,436	$	4,859
Securities purchased under agreements to resell transactions 1		15,847		15,642		23,859		23,832
Customer margin assets		60,892		16,510		47,609		14,182
	$	143,772	$	38,150	$	135,904	$	42,873

________________________

(1)As of June 30, 2021, $11.7 billion or 75% (as of December 31, 2020, $23.1 billion or 97%) of securities acquired through agreements to resell that are shown as repledged have been deposited in a separate bank account for the exclusive benefit of customers in accordance with SEC Rule 15c3-3.

In the normal course of business, the Company pledges qualified securities with clearing organizations to satisfy daily margin and clearing fund requirements. As of June 30, 2021 and December 31, 2020, the majority of the Company’s U.S. and foreign government securities owned were pledged to clearing organizations.

The table below presents financial instruments owned and pledged as collateral, including amounts pledged to affiliates, where the counterparty has the right to repledge, for the periods indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
Stocks	$	25	$	53
U.S. and foreign government securities		44		33
	$	69	$	86

8. Revenues from Contracts with Customers

Revenue from contracts with customers is recognized when, or as, the Company satisfies its performance obligations by transferring the promised services to the customers. A service is transferred to a customer when, or as, the customer obtains control of that service. A performance obligation may be satisfied at a point in time or over time. Revenue from a performance obligation satisfied at a point in time is recognized at the point in time that the Company determines the customer obtains control over the promised service. Revenue from a performance obligation satisfied over time is recognized by measuring the Company’s progress in satisfying the performance obligation in a manner that depicts the transfer of the services to the customer. The amount of revenue recognized reflects the consideration the Company expects to receive in exchange for those promised services (i.e., the “transaction price”). In determining the transaction price, the Company considers multiple factors, including the effects of variable consideration, if any.

The Company’s revenues from contracts with customers are recognized when the performance obligations are satisfied at an amount that reflects the consideration expected to be received in exchange for such services. The majority of the Company’s performance obligations are satisfied at a point in time and are typically collected from customers by debiting their brokerage account with the Company.

‎

26

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

Nature of Services

The Company’s main sources of revenues from contracts with customers are as follows:

-Commissions are charged to customers for order execution services and trade clearing and settlement services. These services represent a single performance obligation as the services are not separately identifiable in the context of the contract. The Company recognizes revenue at a point in time at the execution of the order (i.e., trade date). Commissions are generally collected from cleared customers on trade date and from non-cleared customers monthly. Commissions also include payments for order flow received from IBKR Lite^SM liquidity providers.

-Market data fees are charged to customers for market data services to which they subscribe that the Company delivers. The Company recognizes revenue monthly as the performance obligation is satisfied over time by continually providing market data for the period. Market data fees are collected monthly, generally in advance.

-Risk exposure fees are charged to customers who carry positions with market risk that exceeds defined thresholds. The Company recognizes revenue daily as the performance obligation is satisfied at a point in time by the Company taking on additional risk of account liquidation and potential losses due to insufficient margin. Risk exposure fees are collected daily.

-Payments for order flow are earned from various options exchanges based upon options trading volume originated by the Company that meets certain criteria. The Company recognizes revenue daily as the performance obligation is satisfied at a point in time on customer orders that qualify for payments subject to exchange-mandated programs. Payments for order flow are collected monthly, in arrears.

-Minimum activity fees are charged to customers that do not generate the required minimum monthly commission. The Company recognizes revenue monthly as the performance obligation is satisfied at a point in time by servicing customer accounts that do not generate the required minimum monthly commissions. Minimum activity fees are collected monthly, in arrears.

The Company also earns revenues from other services, including order cancelation or modification fees, position transfer fees, telecommunications fees, withdrawal fees, and bank sweep program fees, among others.

‎

27

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

Disaggregation of Revenue

The tables below present revenue from contracts with customers by geographic location, and major types of services for the periods indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Geographic location 1
United States	$	216	$	200	$	501	$	397
International		146		116		329		226
	$	362	$	316	$	830	$	623
Major types of services
Commissions	$	307	$	276	$	719	$	545
Market data fees 2		20		15		39		28
Risk exposure fees 2		7		1		12		5
Payments for order flow 2		9		7		19		14
Minimum activity fees 2		9		7		16		13
Other 2		10		10		25		18
	$	362	$	316	$	830	$	623

_____________________________

(1)Based on the location of the subsidiaries in which the revenues are recorded.
‎

(2)Included in other fees and services in the condensed consolidated statements of comprehensive income.

Receivables and Contract Balances

Receivables arise when the Company has an unconditional right to receive payment under a contract with a customer and are derecognized when the cash is received. Receivables of $17 million and $13 million, as of June 30, 2021 and December 31, 2020, respectively, are reported in other assets in the condensed consolidated statements of financial condition.

Contract assets arise when the revenue associated with the contract is recognized prior to the Company’s unconditional right to receive payment under a contract with a customer (i.e., unbilled receivable) and are derecognized when either it becomes a receivable or the cash is received. Contract assets are reported in other assets in the condensed consolidated statements of financial condition. As of June 30, 2021 and December 31, 2020, contract asset balances were not material.

Contract liabilities arise when customers remit contractual cash payments in advance of the Company satisfying its performance obligations under the contract and are derecognized when the revenue associated with the contract is recognized either when a milestone is met triggering the contractual right to bill the customer or when the performance obligation is satisfied. Contract liabilities are reported in accounts payable, accrued expenses and other liabilities in the condensed consolidated statements of financial condition. As of June 30, 2021 and December 31, 2020, contract liability balances were not material.

‎

28

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

9.  Other Income

The table below presents the components of other income for the periods indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Principal transactions	$	123	$	12	$	243	$	22
Gains (losses) from currency diversification strategy, net		(9)		16		(11)		(33)
Other, net		4		(1)		6		7
	$	118	$	27	$	238	$	(4)

Principal transactions include (1) trading gains and losses from the Company’s remaining market making activities; (2) realized and unrealized gains and losses on financial instruments that (a) are held for purposes other than the Company’s market making activities, (b) are subject to restrictions, or (c) are accounted for under the equity method; and (3) dividends on investments accounted at cost less impairment.

10.  Employee Incentive Plans

Defined Contribution Plan

The Company offers substantially all employees of U.S.-based operating subsidiaries who have met minimum service requirements the opportunity to participate in defined contribution retirement plans qualifying under the provisions of Section 401(k) of the Internal Revenue Code. The general purpose of this plan is to provide employees with an incentive to make regular savings in order to provide additional financial security during retirement. This plan provides for the Company to match 50% of the employees’ pre-tax contribution, up to a maximum of 10% of eligible earnings. The employee is vested in the matching contribution incrementally over six years of service. Included in employee compensation and benefits expenses in the condensed consolidated statements of comprehensive income was $3 million and $2 million of plan contributions for the six months ended June 30, 2021 and 2020, respectively.

2007 Stock Incentive Plan

Under the Company’s Stock Incentive Plan, up to 30 million shares of the Company’s Class A common stock may be issued to satisfy vested restricted stock units granted to directors, officers, employees, contractors and consultants of the Company. The purpose of the Stock Incentive Plan is to promote the Company’s long-term financial success by attracting, retaining and rewarding eligible participants.

As a result of the Company’s organizational structure, a description of which can be found in “Business – Our Organizational Structure” in Part I, Item 1 of the Company’s Annual Report on Form 10-K, there is no material dilutive effect upon ownership of common stockholders of issuing shares under the Stock Incentive Plan. The issuances do not dilute the book value of the ownership of common stockholders since the restricted stock units are granted at market value, and upon their vesting and the related issuance of shares of common stock, the ownership of IBG, Inc. in IBG LLC, increases proportionately to the shares issued. As a result of such proportionate increase in share ownership, the dilution upon issuance of common stock is borne by IBG LLC’s majority member (i.e., noncontrolling interest), Holdings, and not by IBG, Inc. or its common stockholders. Additionally, dilution of earnings that may take place after issuance of common stock is reflected in EPS reported in the Company’s financial statements. The EPS dilution can be neither estimated nor projected, but historically it has not been material.

The Stock Incentive Plan is administered by the Compensation Committee of the Company’s Board of Directors. The Compensation Committee has discretionary authority to determine the eligibility to participate in the Stock Incentive Plan and establishes the terms and conditions of the awards, including the number of awards granted to each participant and all other terms and conditions applicable to such awards in individual grant agreements. Awards are expected to be made primarily through grants of restricted stock units. Stock Incentive Plan awards are subject to issuance over time. All previously granted but not yet earned awards may be cancelled by the Company upon the participant’s termination of employment or violation of certain applicable covenants prior to issuance, unless determined otherwise by the Compensation Committee.
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29

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

The Stock Incentive Plan provides that, upon a change in control, the Compensation Committee may, at its discretion, fully vest any granted but not yet earned awards under the Stock Incentive Plan, or provide that any such granted but not yet earned awards will be honored or assumed, or new rights substituted by the new employer on a substantially similar basis and on terms and conditions substantially comparable to those of the Stock Incentive Plan.

The Company expects to continue to grant awards on or about December 31 of each year to eligible participants as part of an overall plan of equity compensation. Restricted stock units vest and become distributable to participants in accordance with the following schedule:

•10% on the first vesting date, which is on or about May 9 of each year; and

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

Awards granted to external directors vest, and are distributed, over a five-year period (20% per year) commencing one year after the date of grant. A total of 29,709 restricted stock units have been granted to the external directors cumulatively since the plan’s inception.

The table below presents Stock Incentive Plan awards granted and the related fair values since the plan’s inception.

			Fair Value at
			Date of Grant
	Units		($ millions)
Prior periods (since inception)	24,497,626		$	561
December 31, 2018	1,146,267			62
December 31, 2019	1,374,217			65
December 31, 2020	1,229,177	1		71
	28,247,287		$	759

______________________________

(1)Stock Incentive Plan number of granted restricted stock units related to 2020 was adjusted by 7,034 additional restricted stock units during the six months ended June 30, 2021.

Estimated future grants under the Stock Incentive Plan are accrued for ratably during each year (see Note 2). In accordance with the vesting schedule, outstanding awards vest and are distributed to participants yearly on or about May 9 of each year. At the end of each year, no vested awards remain undistributed.

Compensation expense related to the Stock Incentive Plan recognized in the condensed consolidated statements of comprehensive income was $34 million and $29 million for the six months ended June 30, 2021 and 2020, respectively. Estimated future compensation costs for unvested awards, net of credits for cancelled awards, as of June 30, 2021 are $32 million.

‎

30

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

The table below summarizes the Stock Incentive Plan activity for the periods indicated.

	Stock
	Incentive Plan
	Units
Balance, December 31, 20201	4,974,355
Granted	—
Cancelled	(23,563)
Distributed	(1,210,929)
Balance, June 30, 2021	3,739,863

_____________________________

(1)Stock Incentive Plan number of granted restricted stock units related to 2020 was adjusted by 7,034 additional restricted stock units during the six months ended June 30, 2021.

Awards previously granted but not yet earned under the stock plans are subject to the plans’ post-employment provisions in the event a participant ceases employment with the Company. Through June 30, 2021, a total of 1,148,603 restricted stock units have been distributed under these post-employment provisions. These distributions are included in the table above.

11.  Income Taxes

Income tax expense for the six months ended June 30, 2021 and 2020 differs from the U.S. federal statutory rate primarily due to the taxation treatment of income attributable to noncontrolling interests in IBG LLC. These noncontrolling interests are held directly through a U.S. partnership. Accordingly, the income attributable to these noncontrolling interests is reported in the condensed consolidated statements of comprehensive income, but the related U.S. income tax expense attributable to these noncontrolling interests is not reported by the Company as it is generally the obligation of the noncontrolling interests. Income tax expense is also affected by the differing effective tax rates in foreign, state and local jurisdictions where certain of the Company’s subsidiaries are subject to corporate taxation.

Deferred income taxes arise primarily due to the amortization of the deferred tax assets recognized in connection with the common stock offerings (see Note 4), differences in the valuation of financial assets and liabilities, and for other temporary differences arising from the deductibility of compensation and depreciation expenses in different time periods for accounting and income tax return purposes.

As of and for the six months ended June 30, 2021 and 2020, the Company had no material valuation allowances on deferred tax assets.

The Company is subject to taxation in the U.S. and various states and foreign jurisdictions. As of June 30, 2021, the Company is no longer subject to U.S. Federal and State income tax examinations for tax years prior to 2015, and to non-U.S. income tax examinations for tax years prior to 2011.

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31

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

12.  Leases

All of the Company’s leases are classified as operating leases and primarily consist of real estate leases for corporate offices, data centers, and other facilities. As of June 30, 2021, the weighted-average remaining lease term on these leases is approximately 7 years and the weighted-average discount rate used to measure the lease liabilities is approximately 4.13%. For the six months ended June 30, 2021, right-of-use assets obtained under new operating leases were $7 million. The Company’s lease agreements do not contain any residual value guarantees, restrictions or covenants.

The table below presents balances reported in the condensed consolidated statements of financial condition related to the Company’s leases for the period indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
Right-of-use assets1	$	96	$	101
Lease liabilities1	$	116	$	120

__________________________

(1)Right-of-use assets are included in other assets and lease liabilities are included in accounts payable, accrued expenses and other liabilities in the Company’s condensed consolidated statements of financial condition.

The table below presents balances reported in the condensed consolidated statements of comprehensive income related to the Company’s leases for the period indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Operating lease cost	$	7	$	6	$	14	$	12
Variable lease cost		1		1		2		2
Total lease cost	$	8	$	7	$	16	$	14

The table below reconciles the undiscounted cash flows of the Company’s leases to the present value of its operating lease payments for the periods indicated.

	June 30, 2021
	(in millions)
2021 (remaining)	$	12
2022		21
2023		18
2024		15
2025		15
2026		14
Thereafter		41
Total undiscounted operating lease payments		136
Less: imputed interest		(20)
Present value of operating lease liabilities	$	116

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32

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

13.  Commitments, Contingencies and Guarantees

Legal, Regulatory and Governmental Matters

The Company is subject to certain pending and threatened legal, regulatory and governmental actions and proceedings that arise out of the normal course of business. Given the inherent difficulty of predicting the outcome of such matters, particularly in proceedings where claimants seek substantial or indeterminate damages, or which are in their early stages, the Company is generally not able to quantify the actual loss or range of loss related to such legal proceedings, the manner in which they will be resolved, the timing of their final resolution or the ultimate settlement. Management believes that the resolution of these matters will not have a material effect, if any, on the Company’s business or financial condition, but may have a material impact on the results of operations for a given period.

The Company accounts for potential losses related to litigation in accordance with FASB ASC Topic 450, “Contingencies.” As of June 30, 2021 and 2020, accruals for potential losses related to legal, regulatory and governmental actions, and proceedings matters were not material.

Trading Technologies Matter

On February 3, 2010, Trading Technologies International, Inc. (“Trading Technologies”) filed a complaint in the U.S. District Court for the Northern District of Illinois, Eastern Division, against IBG LLC and IB LLC (“Defendants”). The 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 Defendants filed an answer to Trading Technologies’ amended complaint, as well as related counterclaims. The Defendants deny Trading Technologies’ claims, assert that the asserted patents are not infringed and are invalid, and assert several other defenses as well. 

The asserted patents were the subject of petitions before the United States Patent and Trademark Office (“USPTO”) seeking Covered Business Method Review (“CBM Review”). The USPTO Patent Trial Appeal Board (“PTAB”) found all claims of ten of the twelve asserted patents to be invalid. Of the remaining two patents, 53 of the 56 claims of one patent were held invalid and the other patent survived CBM Review proceedings. Appeals were filed by either Defendants or Trading Technologies on all PTAB determinations.

The United States Court of Appeals for the Federal Circuit affirmed the PTAB’s CBM Review determinations that eight patents were invalid, and vacated the CBM Review determinations of invalidity for four patents, concluding that these patents were not eligible for CBM Review. The District Court proceedings on the four patents where the CBM Review determinations had been vacated thereafter resumed in March 2019.

In June 2021, the District Court granted summary judgment in favor of the Defendants, finding that two of the remaining four patents are invalid. Thereafter, two patents remained in dispute. The District Court trial with respect to these two patents began on August 6, 2021.

While it is difficult to predict the outcome of the matter, the Company believes it has meritorious defenses to the allegations made in the complaint and intends to defend itself 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.

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33

Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

Class Action Matter

On December 18, 2015, a former individual customer filed a purported class action complaint against IB LLC, IBG, Inc., and Thomas Frank, Ph.D., the Company’s Executive Vice President and Chief Information Officer, in the U.S. District Court for the District of Connecticut. The complaint alleges that the purported class of IB LLC’s customers were harmed by alleged “flaws” in the computerized system used to close out (i.e., liquidate) positions in customer brokerage accounts that have margin deficiencies. The complaint seeks, among other things, undefined compensatory damages and declaratory and injunctive relief.

On September 28, 2016, the District Court issued an order granting the Company’s motion to dismiss the complaint in its entirety, and without providing plaintiff leave to amend. On September 28, 2017, plaintiff appealed to the United States Court of Appeals for the Second Circuit. On September 26, 2018, the Court of Appeals affirmed the dismissal of plaintiff’s claims of breach of contract and commercially unreasonable liquidation but vacated and remanded back to the District Court plaintiff’s claims for negligence. On November 30, 2018, the plaintiff filed a second amended complaint. The Company filed a motion to dismiss the new complaint on January 15, 2019, which was denied on September 30, 2019. On December 9, 2019, the Company filed a motion requesting that the District Court certify to the Connecticut Supreme Court two questions of Connecticut law directly relevant to the motion to dismiss. The Court denied the Company’s motion to certify on May 15, 2020. Currently, Plaintiff’s motion for class certification is due on December 1, 2021. The Company does not believe that a purported class action is appropriate given the great differences in portfolios, markets and many other circumstances surrounding the liquidation of any particular customer’s margin-deficient account. IB LLC and the related defendants intend to continue to defend themselves vigorously against the case and, consistent with past practice in connection with this type of unwarranted action, any potential claims for counsel fees and expenses incurred in defending the case may be fully pursued against the plaintiff.

“Short Squeeze” Antitrust Litigation

Beginning in late January 2021, more than three dozen federal class action lawsuits were filed in different jurisdictions against various brokers and other market participants claiming that the defendants acted improperly in restricting trading in the shares of and options on GameStop Corp. and other companies that were subject to unusual trading in January 2021 in what has been referred to as the “Reddit-related short-squeeze”. Most of these cases assert federal antitrust claims, including alleging an illegal antitrust conspiracy among the defendants, as well as various state and federal securities-related claims. IB LLC and its affiliates have been named as defendants in several of these class action lawsuits. The cases were consolidated into a multidistrict litigation (“MDL”), and were transferred to the Southern District of Florida on April 1, 2021 for pre-trial proceedings. By the Order dated May 18, 2021, the Court divided the cases into four tranches: (1) antitrust claims (“Antitrust Tranche”); (2) state-law claims against Robinhood entities (“Robinhood Tranche”); (3) state-law claims against other defendants (“Other Broker Tranche”); and (4) federal security law claims (“Federal Securities Tranche”). The same Order appointed lead plaintiffs’ counsel for the Antitrust, Robinhood, and Other Broker Tranches. On July 13, 2021, the plaintiffs voluntarily dismissed the Robinhood Tranche case. Master complaints for the Antitrust and Other Broker Tranche cases were due on July 26, 2021. The defendants’ motions to dismiss for those cases are due on August 30, 2021. The pleading dates for the Federal Securities Tranche will not be set until lead plaintiffs’ counsel for that case is appointed. The Company believes that the claims asserted against IB LLC and its affiliates lack merit on their face and the Company intends to file, at the appropriate time, a motion to dismiss any class action that might name IB LLC and its affiliates as defendants. 

Regulatory Matters

The Company is subject to regulatory oversight and examination by numerous governmental and self-regulatory authorities. As announced on August 10, 2020, the Company agreed to settle certain matters related to its historical anti-money laundering and Bank Secrecy Act practices and procedures with FINRA, the SEC and the CFTC. As part of the settlements, the Company agreed to pay penalties of $15 million to FINRA, $11.5 million to the SEC and $11.5 million to the CFTC, plus approximately $700,000 in disgorgement. In addition, the Company agreed to continue the retention of an independent consultant to review the implementation of its enhanced compliance practices and procedures. The Company is also cooperating with a United States Department of Justice inquiry concerning these matters, and while its outcome cannot be predicted, the Company does not believe that the resolution of this inquiry is likely to have a materially adverse effect on its financial results.

Guarantees

Certain of the operating subsidiaries provide guarantees to securities and commodities clearing houses and exchanges which meet the accounting definition of a guarantee under FASB ASC Topic 460, “Guarantees.” Under standard membership agreements, clearing house and exchange members are required to guarantee collectively the performance of other members. Under the agreements, if a member becomes unable to satisfy its obligations, other members would be required to meet shortfalls. In the opinion of management, the operating subsidiaries’ liability under these arrangements is not quantifiable and could exceed the cash and securities they have

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Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

posted as collateral. However, the potential for these operating subsidiaries to be required to make payments under these arrangements is remote. Accordingly, no contingent liability is carried in the condensed consolidated statements of financial condition for these arrangements.

In connection with its retail brokerage business, IB LLC or other electronic brokerage operating subsidiaries perform securities and commodities execution, clearance and settlement on behalf of their customers for whom they commit to settle trades submitted by such customers with the respective clearing houses. If a customer fails to fulfill its settlement obligations, the respective operating subsidiary must fulfill those settlement obligations. No contingent liability is carried on the condensed consolidated statements of financial condition for such customer obligations.

Other Commitments

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

14.  Geographic Information

The Company operates its automated global business in the U.S. and international markets on more than 135 electronic exchanges and market centers. A significant portion of the Company’s net revenues is generated by subsidiaries operating outside the U.S. International operations are conducted in 32 countries in Europe, Asia/Pacific and the Americas (outside the U.S.). The following table presents total net revenues and income before income taxes by geographic area for the periods indicated.

Significant transactions and balances between the operating subsidiaries occur, primarily as a result of certain operating subsidiaries holding exchange or clearing organization memberships, which are utilized to provide execution and clearing services to subsidiaries. Intra-region income and expenses and related balances have been eliminated in this geographic information to reflect the external business conducted in each geographic region. The geographic analysis presented below is based on the location of the subsidiaries in which the transactions are recorded. This geographic information does not reflect the way the Company’s business is managed.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Net revenues
United States	$	565	$	390	$	1,216	$	763
International		189		149		431		308
Total net revenues	$	754	$	539	$	1,647	$	1,071
Income before income taxes
United States	$	473	$	174	$	1,029	$	418
International		68		48		151		112
Total income before income taxes	$	541	$	222	$	1,180	$	530

15.  Regulatory Requirements

As of June 30, 2021, aggregate excess regulatory capital for all operating subsidiaries was $6.2 billion.

IB LLC, IBKR Securities Services LLC (formerly, Timber Hill LLC) and Interactive Brokers Corp are subject to the Uniform Net Capital Rule (Rule 15c3-1) under the Exchange Act, IB LLC is also subject to the CFTC’s minimum financial requirements (Regulation 1.17), and IBKRFS is subject to the Swiss Financial Market Supervisory Authority eligible equity requirement. IBC is subject to the Investment Industry Regulatory Organization of Canada risk adjusted capital requirement, IBUK is subject to the United Kingdom Financial Conduct Authority Capital Requirements Directive, IBIE is subject to the Central Bank of Ireland financial resources requirement, IBLUX is subject to the Luxembourg Commission de Surveillance du Secteur Financier financial resources requirement, IBCE is subject to the Hungarian National Bank financial resource requirement, IBI is subject to the National Stock Exchange of India net capital requirements, IBHK is subject to the Hong Kong Securities Futures Commission liquid capital requirement, IBSJ is subject to the Japanese Financial Supervisory Agency capital requirements, IBSG is subject to the Monetary Authority of Singapore capital requirements, and IBA is subject to the Australian Securities Exchange liquid capital requirement.

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Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

The table below summarizes capital, capital requirements and excess regulatory capital as of June 30, 2021.

	Net Capital/
	Eligible Equity		Requirement		Excess
	(in millions)
IB LLC	$	4,831	$	912	$	3,919
IBKRFS		611		11		600
IBHK		788		330		458
Other regulated operating subsidiaries		1,721		513		1,208
	$	7,951	$	1,766	$	6,185

Regulatory capital requirements could restrict the operating subsidiaries from expanding their business and declaring dividends if their net capital does not meet regulatory requirements. Also, certain operating subsidiaries are subject to other regulatory restrictions and requirements.

As of June 30, 2021, all regulated operating subsidiaries were in compliance with their respective regulatory capital requirements.

16.  Related Party Transactions

Receivable from affiliate, reported in other assets in the condensed consolidated statement of financial condition, represents amounts advanced to Holdings and payable to affiliate represents amounts payable to Holdings under the Tax Receivable Agreement (see Note 4).

Included in receivables from and payables to customers in the condensed consolidated statements of financial condition as of June 30, 2021 and December 31, 2020 were accounts receivable from directors, officers and their affiliates of $32 million and $283 million, respectively, and payables of $938 million and $999 million, respectively. The Company may extend credit to these related parties in connection with margin and securities loans. Such loans are (i) made in the ordinary course of business, (ii) are made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable loans with persons not related to the company, and (iii) do not involve more than the normal risk of collectability or present other unfavorable features. Included in short-term borrowings as of June 30, 2021 and December 31, 2020 are senior notes purchased by directors, officers and their affiliates of $22 million and $16 million, respectively.

17. Senior Notes Payable

IBG LLC from time to time may offer senior notes in private placements to certain qualified customers of IB LLC at an issue price of $1 thousand dollars per note. The senior notes will mature no later than the thirtieth day following the issuance date. IBG LLC, at its option, may redeem the senior notes at any time, at a redemption price equal to 100% of the principal amount of the senior notes to be redeemed, plus accrued. The senior notes will pay a fixed rate of interest during their tenure. The interest rate is calculated by adding the benchmark rate to a rate (spread) that IBG LLC will announce from time-to-time. The benchmark rate is the effective federal funds rate as reported by the Federal Reserve Bank of New York on the morning of the date of the offering. IBG LLC intends to use the proceeds for general financing purposes when interest spread opportunities arise.

The carrying value of the senior notes approximate their fair value since they are short-term in nature. During the six months ended June 30, 2021, IBG LLC issued senior notes of $1,237 million and redeemed senior notes of $1,081 million, respectively. The senior notes carried a weighted average interest rate of 1%. As of June 30, 2021 and December 31, 2020, IBG LLC had senior notes outstanding of $252 million and $96 million, respectively, all of which carried a 1% per annum interest rate, and are included in short-term borrowings in the condensed consolidated statements of financial condition. All the outstanding senior notes at June 30, 2021 were redeemed by August 9, 2021. In addition, the Company issued and redeemed $192 million of senior notes during the period from July 1, 2021 through August 9, 2021. Interest expense on the senior notes for the six months ended June 30, 2021 was $1 million.

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Interactive Brokers Group, Inc. and Subsidiaries

Notes to Unaudited Condensed Consolidated Financial Statements

18.  Subsequent Events

The Company has evaluated subsequent events for adjustment to or disclosure in its condensed consolidated financial statements through the date the condensed consolidated financial statements were issued.

Except as disclosed above and in Note 4, Note 13, and Note 17, no other recordable or disclosable events occurred.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion should be read in conjunction with the unaudited condensed consolidated financial statements and the related notes in Item 1, included elsewhere in this report. In addition to historical information, the following discussion also contains forward-looking statements that include risks and uncertainties. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of certain factors, including those set forth under the heading “Risk Factors” in our Annual Report on Form 10-K filed with the Securities Exchange Commission (“SEC”) on March 1, 2021 and elsewhere in this report.

When we use the terms “we,” “us,” and “our,” we mean IBG, Inc. and its subsidiaries for the periods presented.

Introduction

Interactive Brokers Group, Inc. (the “Company” or “IBG, Inc.”) is a holding company whose primary asset is its ownership of approximately 22.0% of the membership interests of IBG LLC. The remaining approximately 78.0% of IBG LLC membership interests are held by IBG Holdings LLC (“Holdings”), a holding company that is owned by our founder and Chairman, Mr. Thomas Peterffy and his affiliates, management and other employees of IBG LLC, and certain other members. The table below shows the amount of IBG LLC membership interests held by IBG, Inc. and Holdings as of June 30, 2021.

	IBG, Inc.	Holdings	Total
Ownership %	22.0%	78.0%	100.0%
Membership interests	92,091,373	325,960,034	418,051,407

We are an automated global electronic broker. We custody and service accounts for hedge and mutual funds, exchange traded funds (“ETFs”), registered investment advisers, proprietary trading groups, introducing brokers and individual investors. We specialize in routing orders and executing and processing trades in stocks, options, futures, forex, bonds, mutual funds and ETFs on more than 135 electronic exchanges and market centers in 33 countries and in 25 currencies seamlessly around the world.

As an electronic broker, we execute, clear and settle trades globally for both institutional and individual customers. Capitalizing on our proprietary technology, our systems provide our customers with the capability to monitor multiple markets around the world simultaneously and to execute trades electronically in these markets at a low cost, in multiple products and currencies from a single trading account. The emerging complexity of multiple market centers has provided us with the opportunity to build and continuously adapt our order routing software to secure excellent execution prices.

Since our inception in 1977, we have focused on developing proprietary software to automate broker-dealer functions. The proliferation of electronic exchanges and market centers over the last three decades has allowed us to integrate our software with an increasing number of trading venues into one automatically functioning, computerized platform that requires minimal human intervention.

Our customer base is diverse with respect to geography and segments. Currently, approximately 75% of our customers reside outside the U.S. in over 200 countries and territories, and over 50% of new customers come from outside the U.S. Approximately 63% of our customers’ equity is in institutional accounts such as hedge funds, financial advisors, proprietary trading desks and introducing brokers. Specialized products and services that we have developed successfully attract these accounts. For example, we offer prime brokerage services, including financing and securities lending, to hedge funds; our model portfolio technology and automated share allocation and rebalancing tools are particularly attractive to financial advisors; and our trading platform, global access and low pricing attract introducing brokers.

COVID-19 Pandemic

In March 2020, the World Health Organization recognized the outbreak of the Coronavirus Disease 2019 (“COVID-19”) caused by a novel strain of the coronavirus as a pandemic. The pandemic has affected all countries in which we operate. The response of governments and societies to the COVID-19 pandemic, which includes temporary closures of certain businesses; social distancing; travel restrictions, “shelter in place” and other governmental regulations; and reduced consumer spending due to job losses, has significantly impacted volatility in the financial, commodities and energy markets, and general economic conditions.

The COVID-19 pandemic has precipitated unprecedented market conditions with equally unprecedented social and community challenges. Amid these challenges:

The Company is committed to ensuring the highest levels of service to its customers so they can effectively manage their assets, portfolios and risks. The Company’s technical infrastructure has withstood the challenges presented by the extraordinary volatility and increased market volume.

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The Company can run its business from alternate office locations and/or remotely if a Company office must temporarily close due to the spread of the COVID-19 pandemic.

The effects of the COVID-19 pandemic on the Company’s financial results, which may have lasting effects as more investors are brought into the financial markets, can be summarized as follows: (1) higher commission revenue due to increased trading activity and a higher rate of customer accounts opened throughout 2020 and into 2021; and (2) generally lower net interest margin resulting from lower benchmark interest rates.

The impact of the COVID-19 pandemic on the Company’s future financial results remains uncertain and currently cannot be quantified, as it will depend on numerous evolving factors that currently cannot be accurately predicted, including, but not limited to, the duration and spread of the pandemic; its impact on our customers, employees and vendors; governmental actions in response to the pandemic; and the overall impact of the pandemic in the economy and society; among other factors. Any of these events could have a materially adverse effect on the Company’s financial results.

Business Environment

During the quarter ended June 30, 2021 (“current quarter”), world equities markets rose compared to the quarter ended June 30, 2020 (“prior year quarter”). Continued global interest in financial markets amid the search for higher yields in zero and negative-interest rate environments, especially by individuals newly attracted to these markets, led to active trading.

The following is a summary of the key economic drivers that affect our business and how they compared to the prior year quarter:

Global trading volumes. According to industry data, compared to the prior year quarter, average daily volumes in U.S. exchange-listed equity-based options increased by 29%, and in U.S. futures by 5%, while listed cash equities volume decreased by 14% versus a pandemic-impacted prior year quarter. While some markets experienced meaningful increases in trading activity, diminished volatility throughout the quarter and a comparison against a particularly strong, pandemic-impacted prior year quarter, affected growth rates. A growing number of investors continue to participate in the financial markets out of a desire to earn higher yields on investments, which cannot be achieved in bank accounts in a zero or negative rate environment.

These factors boosted industry and our transaction revenues, especially in stocks and options. Note that while options, futures and U.S. cash equities volumes are readily comparable measures, they reflect most but not all of the global volumes that generate our commission revenue. See “Trading Volumes and Customer Statistics” below in this Item 2 for additional details regarding our trade volumes, contract and share volumes, and customer statistics.

Volatility. U.S. market volatility, as measured by the average Chicago Board Options Exchange Volatility Index (“VIX^®”), fell 48% to 18, versus 35 in the prior year quarter, as last year’s unusual COVID-19 pandemic-induced spike in market volatility moderated, but still remains elevated compared to pre-pandemic levels.

Higher volatility improves our performance because it generally correlates with customer trading activity across product types. Customer options and stock volumes were up 34% and 160%, respectively, while futures and foreign exchange dollar volumes declined 19% and 33% respectively, compared to the prior year quarter. While our customer stock volume reflected unusually strong trading in low-priced stocks, even after removing that effect the increase in share volume was 36%. Despite the current quarter’s lower average volatility than the prior year quarter, investors sought to utilize their time productively by opening brokerage accounts while at home during the COVID-19 pandemic. This trend, combined with the increasing connectedness of investors to one another and to the markets, led to an influx of new accounts and strong increases in trading volume.

Interest Rates. The U.S. Federal Reserve’s target federal funds rate range in the current quarter remained at zero to 0.25%, similar to rates in many other currencies, with the exception of those where rates are negative. Low benchmark rates lead to lower net interest income and a narrower net interest margin.

U.S. rates also continue to exhibit a relatively flat yield curve, which limits our opportunities to earn more net interest income on interest-sensitive assets. Low rates reduce the interest we earn on our segregated cash, the majority of which is invested in U.S. government securities and related instruments, as higher-yielding investments mature and are reinvested at current lower rates. Further, our margin balances are tied to benchmark rates, with a minimum charge of 0.75% in U.S. dollars, so low interest rates limit the interest we receive on margin lending to our customers. We continue to offer among the lowest rates in the industry on margin lending, and we believe our low rates are an important factor that attracts customers to our platform.

As an offset, lower rates also reduce our interest expense, for example in U.S. dollars we pay interest to customers only when the federal funds effective rate is above 0.50%. In currencies with negative rates, we collect interest on a portion of customer cash

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balances. And as an indirect positive effect, we believe low and negative benchmark world interest rates have been a factor leading to the active trading we experienced, as investors sought to enter securities markets to achieve higher yields on their investments.

Net interest income increased compared to the prior year quarter while the average federal funds effective rate increased marginally to 0.07% from 0.06% in the prior year quarter. While the interest we pay on customer cash balances and earn on customer margin loans is based on spreads that are compressed at low benchmark rates, rising balances have partially compensated for this reduction in net interest income. Despite little change in benchmark rates, a 94% increase in our average margin loan balances contributed to a 97% rise in margin loan interest from the prior year quarter. Average customer credit balances rose 17% over the prior year quarter, driven by a strong inflow of new accounts worldwide, sustaining a historical trend whereby growth in our customers’ cash has been consistent and over time outpaces the variable growth and contraction in margin loans.

Fueled by higher average balances and strong securities lending results, our net interest income grew 40% in the current quarter over the prior year quarter, and our overall net interest margin increased from 0.99% to 1.15%.

Currency fluctuations. As a global electronic broker trading on exchanges around the world in multiple currencies, we are exposed to foreign currency risk. We actively manage this exposure by keeping our net worth in proportion to a defined basket of 10 currencies we call the “GLOBAL” to diversify our risk and to align our hedging strategy with the currencies that we use in our business. Because we report our financial results in U.S. dollars, the change in the value of the GLOBAL versus the U.S. dollar affects our earnings. During the current quarter the value of the GLOBAL, as measured in U.S. dollars, increased 0.17% compared to its value as of March 31, 2021, which had a positive impact on our comprehensive earnings for the current quarter. A discussion of our approach for managing foreign currency exposure is contained in Part I, Item 3 of this Quarterly Report on Form 10-Q entitled “Quantitative and Qualitative Disclosures about Market Risk.

Overall, active markets, stay-at-home conditions, and a search for higher yields in negative and zero rate environments, brought on by the COVID-19 pandemic and government responses to it, have continued to encourage people to actively engage in the markets. Customers continue to seek our superior technology, execution capabilities, and our ability to offer a broad range of products and global market access.

Financial Overview

We report non-GAAP financial measures, which exclude certain items that may not be indicative of our core operating results and business outlook and may be useful in evaluating the operating performance of our business and provide a better comparison of our results in the current period to those in prior and future periods. See the “Non-GAAP Financial Measures” section below in this Item 2 for additional details.

Diluted earnings per share were $1.00 for the current quarter, compared to $0.40 for the prior year quarter. Adjusted diluted earnings per share were $0.82 for the current quarter, compared to $0.57 for the prior year quarter. The calculation of diluted earnings per share is detailed in Note 4 – “Equity and Earnings per Share” to the unaudited condensed consolidated financial statements in Part 1, Item 1 of this Quarterly Report on Form 10-Q.

For the current quarter, net revenues were $754 million and income before income taxes was $541 million, compared to net revenues of $539 million and income before income taxes of $222 million in the prior year quarter. Adjusted net revenues were $650 million and adjusted income before income taxes was $437 million in the current quarter, compared to adjusted net revenues of $523 million and adjusted income before income taxes of $310 million in the prior year quarter.

Diluted earnings per share were $2.17 for the six months ended June 30, 2021 (“current six-month period”), compared to $1.00 for the six months ended June 30, 2020 (“prior year six-month period”). Adjusted diluted earnings per share were $1.80 for the current six-month period compared to $1.26 for the prior year six-month period

For the current six-month period, net revenues were $1,647 million and income before income taxes was $1,180 million, compared to net revenues of $1,071 million and income before income taxes of $530 million in the prior year six-month period. Adjusted net revenues were $1,446 million and adjusted income before income taxes was $979 million in the current six-month period, compared to adjusted net revenues of $1,104 million and adjusted income before income taxes of $667 million in the prior year six-month period.

The financial highlights for the current quarter were:

Commission revenue increased $31 million, or 11%, from the prior year quarter on higher customer stock and options trading volumes within an active trading environment.

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Net interest income increased $78 million, or 40%, from the prior year quarter on higher margin loan balances and strong securities lending activity.

Other income increased $91 million from the prior year quarter. This increase was mainly comprised of (1) $99 million related to our strategic investment in Up Fintech Holding Limited (“Tiger Brokers”), which increased to a $113 million mark-to-market gain in the current quarter from a $14 million mark-to-market gain in the prior year quarter; and (2) $13 million related to our U.S. government securities portfolio, which lost $0.2 million in the current quarter compared to a $13 million loss in the prior year quarter; partially offset by (3) $25 million related to our currency diversification strategy, which lost $9 million in the current quarter compared to a gain of $16 million in the prior year quarter.

General and administrative decreased $97 million from the prior year quarter, primarily due to the non-recurrence of $103 million in expenses incurred to compensate certain affected customers in connection with their losses on West Texas Intermediate Crude Oil contracts in April 2020, as previously disclosed.

Pretax profit margin was 72% for the current quarter, up from 41% in the prior year quarter. Adjusted pretax profit margin for the current quarter was 67%, up from 59% in the prior year quarter.

Total equity at June 30, 2021 was $9.9 billion.

Because we report our financial results in U.S. dollars, the change in the value of the GLOBAL versus the U.S. dollar affects our earnings. In connection with our currency diversification strategy as of June 30, 2021, approximately 26% of our equity was denominated in currencies other than the U.S. dollar. In the current quarter, our currency diversification strategy increased our comprehensive earnings by $12 million (compared to an increase of $38 million in the prior year quarter), as the U.S. dollar value of the GLOBAL increased by approximately 0.17% compared to its value as of March 31, 2021. The effects of our currency diversification strategy are reported as (1) a component of other income (loss of $9 million) in the consolidated statement of comprehensive income and (2) other comprehensive income (“OCI”) (gain of $21 million) in the consolidated statement of financial condition and the consolidated statement of comprehensive income. The full effect of the GLOBAL is captured in comprehensive income.

Certain Trends and Uncertainties

We believe that our current operations may be favorably or unfavorably impacted by the following trends that may affect our financial condition and results of operations:

The COVID-19 pandemic has precipitated unprecedented market conditions with equally unprecedented social and community challenges. The impact of the COVID-19 pandemic on the Company’s future financial results could be significant but currently cannot be quantified, as it will depend on numerous evolving factors that currently cannot be accurately predicted, including, but not limited to, the duration and spread of the pandemic; its impact on our customers, employees and vendors; governmental regulations in response to the pandemic; and the overall impact of the pandemic on the economy and society; among other factors.

•Retail participation in the equity markets has fluctuated over the past few years due to investor sentiment, market conditions and a variety of other factors. Retail transaction volumes may not be sustainable and are not predictable.

Additional consolidation among market centers may adversely affect the value of our IB SmartRouting^SM software.

Price competition among broker-dealers may continue to intensify.

•Benchmark interest rates have fluctuated over the past years due to economic conditions. Changes in interest rates may not be predictable.

Fiscal and/or monetary policy may change and impact the financial services business and securities markets.

•New legislation or modifications to existing regulations and rules could occur in the future. Scrutiny of payment for order flow and order routing practices by regulatory and legislative authorities has increased.

•We continue to be exposed to the risks and uncertainties of doing business in international markets, particularly in the heavily regulated brokerage industry. Such risks and uncertainties include political, economic and financial instability, and foreign policy changes. For example, tensions between the U.S. and China have escalated recently, and changes in Chinese

41

governmental oversight of Hong Kong and in the Chinese and Hong Kong capital markets could result in adverse effects on our business and loss of assets we hold in the region.

•Our remaining market making activities will continue to be impacted by market structure changes, market conditions, the level of automation of competitors, and the relationship between actual and implied volatility in the equities markets.

See “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K, filed with the SEC on March 1, 2021, and elsewhere in this report for a discussion of other risks that may affect our financial condition and results of operations.

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42

Trading Volumes and Customer Statistics

The tables below present historical trading volumes and customer statistics for our business. Trading volumes are the primary driver in our business. Information on our net interest income can be found elsewhere in this report.

TRADE VOLUMES:

(in thousands, except %)

			Brokerage
	Brokerage		Non						Avg. Trades
	Cleared	%	Cleared	%	Principal	%	Total	%	per U.S.
Period	Trades	Change	Trades	Change	Trades	Change	Trades	Change	Trading Day
2018	328,099		21,880		18,663		368,642		1,478
2019	302,289	(8%)	26,346	20%	17,136	(8%)	345,771	(6%)	1,380
2020	620,405	105%	56,834	116%	27,039	58%	704,278	104%	2,795
2Q2020	153,212		13,752		7,252		174,216		2,765
2Q2021	196,659	28%	16,130	17%	7,975	10%	220,764	27%	3,504
1Q2021	273,985		24,079		8,418		306,482		5,024
2Q2021	196,659	(28%)	16,130	(33%)	7,975	(5%)	220,764	(28%)	3,504

CONTRACT AND SHARE VOLUMES:

(in thousands, except %)

TOTAL

	Options	%	Futures (1)	%	Stocks	%
Period	(contracts)	Change	(contracts)	Change	(shares)	Change
2018	408,406		151,762		210,257,186
2019	390,739	(4%)	128,770	(15%)	176,752,967	(16%)
2020	624,035	60%	167,078	30%	338,513,068	92%
2Q2020	151,665		43,393		67,637,445
2Q2021	196,715	30%	35,061	(19%)	172,099,915	154%
1Q2021	231,797		40,868		308,934,824
2Q2021	196,715	(15%)	35,061	(14%)	172,099,915	(44%)

ALL CUSTOMERS

	Options	%	Futures (1)	%	Stocks	%
Period	(contracts)	Change	(contracts)	Change	(shares)	Change
2018	358,852		148,485		198,909,375
2019	349,287	(3%)	126,363	(15%)	167,826,490	(16%)
2020	584,195	67%	164,555	30%	331,263,604	97%
2Q2020	140,787		42,582		65,818,295
2Q2021	189,073	34%	34,635	(19%)	171,417,373	160%
1Q2021	221,898		40,361		306,165,385
2Q2021	189,073	(15%)	34,635	(14%)	171,417,373	(44%)

_________________________

(1)Futures contract volume includes options on futures.

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43

CLEARED CUSTOMERS

	Options	%	Futures (1)	%	Stocks	%
Period	(contracts)	Change	(contracts)	Change	(shares)	Change
2018	313,795		146,806		194,012,882
2019	302,068	(4%)	125,225	(15%)	163,030,500	(16%)
2020	518,965	72%	163,101	30%	320,376,365	97%
2Q2020	124,010		42,259		62,937,898
2Q2021	170,902	38%	34,355	(19%)	168,601,027	168%
1Q2021	202,583		40,019		301,675,030
2Q2021	170,902	(16%)	34,355	(14%)	168,601,027	(44%)

PRINCIPAL TRANSACTIONS

	Options	%	Futures (1)	%	Stocks	%
Period	(contracts)	Change	(contracts)	Change	(shares)	Change
2018	49,554		3,277		11,347,811
2019	41,452	(16%)	2,407	(27%)	8,926,477	(21%)
2020	39,840	(4%)	2,523	5%	7,249,464	(19%)
2Q2020	10,878		811		1,819,150
2Q2021	7,642	(30%)	426	(47%)	682,542	(62%)
1Q2021	9,899		507		2,769,439
2Q2021	7,642	(23%)	426	(16%)	682,542	(75%)

________________________

(1)Futures contract volume includes options on futures.

CUSTOMER STATISTICS:

Year over Year	2Q2021		2Q2020		% Change
Total Accounts (in thousands)		1,414		876	61%
Customer Equity (in billions) (1)	$	363.5	$	203.2	79%
Cleared DARTs (in thousands) (2)		2,082		1,558	34%
Total Customer DARTs (in thousands) (2)		2,304		1,746	32%
Cleared Customers
Commission per Cleared Commissionable Order (3)	$	2.38	$	2.81	(15%)
Cleared Avg. DART per Account (Annualized)		382		480	(20%)

Consecutive Quarters	2Q2021		1Q2021		% Change
Total Accounts (in thousands)		1,414		1,325	7%
Customer Equity (in billions) (1)	$	363.5	$	330.6	10%
Cleared DARTs (in thousands) (2)		2,082		2,964	(30%)
Total Customer DARTs (in thousands) (2)		2,304		3,308	(30%)
Cleared Customers
Commission per Cleared Commissionable Order (3)	$	2.38	$	2.31	3%
Cleared Avg. DART per Account (Annualized)		382		622	(39%)

________________________

(1)Excludes non-customers.

(2)Daily average revenue trades (“DARTs”) are based on customer orders.

(3)Commissionable order – a customer order that generates commissions.

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Results of Operations

The table below presents our consolidated results of operations for the periods indicated. The period-to-period comparisons below of financial results are not necessarily indicative of future results.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share and per share amounts)
Revenues
Commissions	$	307	$	276	$	719	$	545
Other fees and services		55		40		111		78
Other income (loss)		118		27		238		(4)
Total non-interest income		480		343		1,068		619
Interest income		307		244		697		613
Interest expense		(33)		(48)		(118)		(161)
Total net interest income		274		196		579		452
Total net revenues		754		539		1,647		1,071
Non-interest expenses
Execution, clearing and distribution fees		54		76		122		153
Employee compensation and benefits		96		82		193		162
Occupancy, depreciation and amortization		19		17		39		34
Communications		8		7		16		13
General and administrative		35		132		94		169
Customer bad debt		1		3		3		10
Total non-interest expenses		213		317		467		541
Income before income taxes		541		222		1,180		530
Income tax expense		35		15		88		33
Net income		506		207		1,092		497
Less net income attributable to noncontrolling interests		414		175		893		419
Net income available for common stockholders	$	92	$	32	$	199	$	78
Earnings per share
Basic	$	1.01	$	0.41	$	2.19	$	1.01
Diluted	$	1.00	$	0.40	$	2.17	$	1.00
Weighted average common shares outstanding
Basic		91,365,234		77,357,609		91,078,868		77,054,388
Diluted		92,199,169		78,031,462		91,984,246		77,799,963
Comprehensive income
Net income available for common stockholders	$	92	$	32	$	199	$	78
Other comprehensive income
Cumulative translation adjustment, before income taxes		5		4		(12)		(3)
Income taxes related to items of other comprehensive income		-		-		-		-
Other comprehensive loss, net of tax		5		4		(12)		(3)
Comprehensive income available for common stockholders	$	97	$	36	$	187	$	75
Comprehensive income attributable to noncontrolling interests
Net income attributable to noncontrolling interests	$	414	$	175	$	893	$	419
Other comprehensive income - cumulative translation adjustment		16		18		(43)		(13)
Comprehensive income attributable to noncontrolling interests	$	430	$	193	$	850	$	406

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Three Months Ended June 30, 2021 (“current quarter”) compared to the Three Months Ended June 30, 2020 (“prior year quarter”)

Net Revenues

Total net revenues, for the current quarter, increased $215 million, or 40%, compared to the prior year quarter, to $754 million. The increase in net revenues was due to higher commissions, other fees and services, other income, and net interest income.

Commissions

We earn commissions from our cleared customers for whom we act as an executing and clearing broker and from our non-cleared customers for whom we act as an execution-only broker. We have a commission structure that allows customers to choose between an all-inclusive fixed, or “bundled”, rate and a tiered, or “unbundled”, rate that offers lower commissions for high volume customers. For “unbundled” commissions, we pass through regulatory and exchange fees separately from our commissions, adding transparency to our fee structure. Commissions also include payments for order flow income received from IBKR Lite^SM liquidity providers. (Our IBKR Lite^SM offering provides commission-free trades on U.S. exchange-listed stocks and ETFs and generates no commission revenues from customers on these trades.) Our commissions are geographically diversified.

Commissions, for the current quarter, increased $31 million, or 11%, compared to the prior year quarter, to $307 million, driven by higher customer trading volumes, particularly in stocks and options. Total customer options contracts and stock share volumes increased 34% and 160%, respectively, while futures contracts volume decreased 19% compared to the prior year quarter. Removing the effect of trading in low-priced stocks, the stock share volume rose 36%. Total DARTs for cleared and execution-only customers, for the current quarter, increased 32% to 2.3 million, compared to 1.7 million for the prior year quarter. DARTs for cleared customers, i.e., customers for whom we execute trades, as well as clear and carry positions, for the current quarter, increased 34% to 2.1 million, compared to 1.6 million for the prior year quarter. Average commission per commissionable order for cleared customers, for the current quarter, decreased 15% to $2.38, compared to $2.81 for the prior year quarter, reflecting smaller average order sizes in options and foreign exchange, as well as higher exchange rebates passed through to our customers.

Other Fees and Services

We earn fee income on services provided to our customers, which includes market data fees, risk exposure fees, minimum activity fees, payments for order flow from exchange-mandated programs, and other fees and services charged to customers.

Other fees and services, for the current quarter, increased $15 million, or 38%, compared to the prior year quarter, to $55 million, driven by a $6 million increase in exposure fee income, a $5 million increase in market data fee income, a $2 million increase in payments for order flow income from options exchange-mandated programs, and a $2 million increase in account activity fees; partially offset by a $1 million decrease in FDIC Insured Bank Deposit Sweep Program fee income, and a $1 million decrease in IPO-related fee income.

Other Income

Other income consists of foreign exchange gains (losses) from our currency diversification strategy, gains (losses) from principal transactions, gains (losses) from our equity method investments, and other revenue not directly attributable to our core business offerings. A discussion of our approach to managing foreign currency exposure is contained in Part I, Item 3 of this Quarterly Report on Form 10-Q entitled “Quantitative and Qualitative Disclosures about Market Risk.”

Other income, for the current quarter, increased $91 million, or 337%, compared to the prior year quarter, to $118 million. This increase was mainly comprised of $99 million related to our strategic investment in Tiger Brokers, which increased to a $113 million mark-to-market gain in the current quarter from a $14 million mark-to-market gain in the prior year quarter; and $13 million related to our U.S. government securities portfolio, which lost $0.2 million in the current quarter compared to a $13 million loss in the prior year quarter; partially offset by $25 million related to our currency diversification strategy, which lost $9 million in the current quarter compared to a gain of $16 million in the prior year quarter.

Interest Income and Interest Expense

We earn interest on margin lending to customers secured by marketable securities these customers hold with us; from our investments in U.S. and foreign government securities; from borrowing and lending securities; on deposits (in positive interest rate currencies) with banks; and on certain customers cash balances in negative rate currencies We pay interest on customer cash balances (in sufficiently positive interest rate currencies); for borrowing and lending securities; and on our borrowings.

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Net interest income (interest income less interest expense), for the current quarter, increased $78 million, or 40%, compared to the prior year quarter, to $274 million. The increase in net interest income was driven by higher average margin loan balances and strong securities lending activity.

Net interest income on customer balances, for the current quarter, increased $24 million, compared to the prior year quarter, driven by a $21.5 billion increase in average margin loan balances; a slight increase in the average federal funds effective rate which rose to 0.07% from 0.06% in the prior year quarter; and an increase in customer cash balances in negative rate currencies; partially offset by a $5.8 billion decrease in average segregated cash and securities balances. Outside the U.S., notably in Europe, despite the proportionately higher growth in foreign currency cash balances, negative benchmark interest rates in some currencies have affected our ability to achieve acceptable yields on our segregated cash in this region. See the “Business Environment” section above in this Item 2 for a further discussion about the change in interest rates in the current quarter.

We earn income on securities loaned and borrowed to support customer long and short stock holdings in margin accounts. In addition, our Stock Yield Enhancement Program provides an opportunity for customers with fully-paid stock to allow us to lend it out. We pay customers a rebate on the cash collateral generally equal to 50% of the income we earn from lending the shares. We place cash and/or U.S. Treasury securities, as collateral securing the loans in the customer’s account, in segregated accounts or at an affiliate acting as collateral agent for the benefit of our customer.

In the current quarter, average securities borrowed balances decreased 42%, to $2.8 billion while average securities loaned balances increased 123%, to $11.1 billion, compared to the prior year quarter. Net interest earned from securities lending is affected by the level of demand for securities positions held by our customers that investors were looking to sell short. During the current quarter, net interest earned from securities lending transactions increased $56 million, or 70%, compared to the prior year quarter, as we were able to satisfy investor demand for more of the hard-to-borrow securities they sought to sell short. It should be noted that securities lending transactions entered into to support customer activity may produce interest income (expense) that is offset by interest expense (income) related to customer balances.

The Company measures return on interest-earning assets using net interest margin (“NIM”). NIM is computed by dividing the annualized net interest income by the average interest-earning assets for the period. Interest-earning assets consist of cash and securities segregated for regulatory purposes (including U.S. government securities and securities purchased under agreements to resell), customer margin loans, securities borrowed, other interest-earning assets (solely firm assets), and customer cash balances swept into FDIC insured banks as part of our Insured Bank Deposit Sweep Program. Interest-bearing liabilities consist of customer credit balances, securities loaned, and other interest-bearing liabilities.

Yields are generally a reflection of benchmark interest rates in each currency in which the Company and its customers hold cash balances. Because a substantial portion of customer cash and margin loans are denominated in currencies other than the U.S. dollar, changes in U.S. benchmark interest rates do not impact the total amount of segregated cash and securities, customer margin loans and customer credit balances. Furthermore, because interest, when benchmark rates are at higher levels, is paid only on eligible cash credit balances (i.e., balances over $10 thousand or equivalent, in securities accounts with over $100 thousand in equity, and in smaller accounts at reduced rates), changes in benchmark interest rates are not passed through to the total amount of customer credit balances. Finally, the Company’s policies with respect to currencies with negative interest rates impact the yields on segregated cash and customer credit balances as effective interest rates in those currencies fluctuate.

Generally, as benchmark interest rates rise, a larger portion of the interest earned on securities lending transactions is reported as net interest income on “Segregated cash and securities, net” instead of “Securities borrowed and loaned, net” because interest earned on cash collateral held in specially designated bank accounts for the benefit of customers, in accordance with the U.S. customer protection rules, increases.

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The table below presents net interest income information corresponding to interest-earning assets and interest-bearing liabilities for the periods indicated.

	Three Months Ended June 30,
	2021		2020
	(in millions)
Average interest-earning assets
Segregated cash and securities	$	39,671	$	45,463
Customer margin loans		44,234		22,751
Securities borrowed		2,833		4,911
Other interest-earning assets		7,411		5,157
FDIC sweeps 1		2,749		2,990
	$	96,898	$	81,272
Average interest-bearing liabilities
Customer credit balances	$	77,676	$	66,673
Securities loaned		11,068		4,972
Other interest-bearing liabilities		296		43
	$	89,040	$	71,688
Net Interest income
Segregated cash and securities, net	$	(2)	$	39
Customer margin loans 2		128		65
Securities borrowed and loaned, net		136		80
Customer credit balances, net 2		8		6
Other net interest income 1,3		7		11
Net interest income 3	$	277	$	201
Net interest margin ("NIM")		1.15%		0.99%
Annualized Yields
Segregated cash and securities		-0.02%		0.34%
Customer margin loans		1.16%		1.15%
Customer credit balances		-0.04%		-0.04%

______________________________

(1)Represents the average amount of customer cash swept into FDIC-insured banks as part of our Insured Bank Deposit Sweep Program. This item is not recorded in the Company's condensed consolidated statements of financial condition. Income derived from program deposits is reported in other net interest income in the table above.
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(2)Interest income and interest expense on customer margin loans and customer credit balances, respectively, are calculated on daily cash balances within each customer’s account on a net basis, which may result in an offset of balances across multiple account segments (e.g., between securities and commodities segments).

(3)Includes income from financial instruments that has the same characteristics as interest, but is reported in other fees and services and other income in the Company’s condensed consolidated statements of comprehensive income. For the three months ended June 30, 2021 and 2020, $4 million and $4 million were reported in other fees and services, respectively, and $0 million and $1 million were reported in other income, respectively.
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Non-Interest Expenses

Non-interest expenses, for the current quarter, decreased $104 million, or 33% , compared to the prior year quarter, to $213 million, mainly due to a $97 million decrease in general and administrative expenses, and a $22 million decrease in execution, clearing and distribution fees, partially offset by a $14 million increase in employee compensation and benefits. As a percentage of total net revenues, non-interest expenses were 28% for the current quarter and 59% for the prior year quarter.

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48

Execution, Clearing and Distribution Fees

Execution, clearing and distribution fees include the costs of executing and clearing trades, net of liquidity rebates received from various exchanges and market centers, as well as regulatory fees and market data fees. Execution fees are paid primarily to electronic exchanges and market centers on which we trade. Clearing fees are paid to clearing houses and clearing agents. Market data fees are paid to third parties to receive streaming price quotes and related information.

Execution, clearing and distribution fees, for the current quarter, decreased $22 million, or 29%, compared to the prior year quarter, to $54 million, primarily driven by a $14 million decrease in exchange fees due to higher offsetting volume-related liquidity rebates received from certain exchanges and a $6 million clearing rebate received in the current quarter. As a percentage of total net revenues, execution, clearing and distribution fees were 7% for the current quarter and 14% for the prior year quarter.

Employee Compensation and Benefits

Employee compensation and benefits include salaries, bonuses and other incentive compensation plans, group insurance, contributions to benefit programs and other related employee costs.

Employee compensation and benefits expenses, for the current quarter, increased $14 million, or 17%, compared to the prior year quarter, to $96 million, associated with a 31% increase in the average number of employees to 2,309 for the current quarter, compared to 1,759 for the prior year quarter. We continued to add staff in customer service, compliance, and software development. As we continue to grow, our focus on automation has allowed us to maintain a relatively small staff. As a percentage of total net revenues, employee compensation and benefits expenses were 13% for the current quarter and 15% for the prior year quarter.

Occupancy, Depreciation and Amortization

Occupancy expenses consist primarily of rental payments on office and data center leases and related occupancy costs, such as utilities. Depreciation and amortization expenses result from the depreciation of fixed assets, such as computing and communications hardware, as well as amortization of leasehold improvements and capitalized in-house software development.

Occupancy, depreciation and amortization expenses, for the current quarter, increased $2 million, or 12%, compared to the prior year quarter, to $19 million, mainly due to higher costs related to the expansion of our physical space for both offices and data centers. As a percentage of total net revenues, occupancy, depreciation and amortization expenses were 3% for both the current quarter and prior year quarter.

Communications

Communications expenses consist primarily of the cost of voice and data telecommunications lines supporting our business, including connectivity to exchanges and market centers around the world.

Communications expenses, for the current quarter, increased $1 million, or 14%, compared to the prior year quarter, to $8 million. As a percentage of total net revenues, communications expenses were 1% for both the current quarter and prior year quarter.

General and Administrative

General and administrative expenses consist primarily of advertising; professional services expenses, such as legal and audit work; legal and regulatory matters; and other operating expenses.

General and administrative expenses, for the current quarter, decreased $97 million, or 73%, compared to the prior year quarter, to $35 million, primarily due to the non-recurrence of $103 million in expenses incurred to compensate certain affected customers in connection with their losses on West Texas Intermediate Crude Oil contracts in April 2020. As a percentage of total net revenues, general and administrative expenses were 5% for the current quarter and 24% for the prior year quarter.

Customer Bad Debt

Customer bad debt expense consists primarily of losses incurred by customers in excess of their assets with us, net of amounts recovered by us.

Customer bad debt expense, for the current quarter, decreased $2 million, compared to the prior year quarter, to $1 million.

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Income Tax Expense

We pay U.S. federal, state and local income taxes on our taxable income, which is proportional to the percentage we own of IBG LLC. Also, our operating subsidiaries are subject to income tax in the respective jurisdictions in which they operate.

Income tax expense, for the current quarter, increased $20 million, or 133%, compared to the prior year quarter, to $35 million, primarily due to (1) higher income tax expense attributable to our operating subsidiaries outside the United States (“U.S.”), driven by higher income before taxes; and (2) higher U.S. income tax expense driven by higher income before taxes and IBG, Inc.’s higher average ownership percentage of IBG LLC which rose from 18.6% to 21.9%.

The table below presents information about our income tax expense for the periods indicated.

	Three Months Ended June 30,
	2021		2020
	(in millions, except %)
Consolidated
Consolidated income before income taxes	$	541	$	222
IBG, Inc. stand-alone income before income taxes		1		-
Operating subsidiaries income before income taxes	$	540	$	222
Operating subsidiaries
Income before income taxes	$	540	$	222
Income tax expense		12		7
Net income available to members	$	528	$	215
IBG, Inc.
Average ownership percentage in IBG LLC		21.9%		18.6%
Net income available to IBG, Inc. from operating subsidiaries	$	114	$	40
IBG, Inc. stand-alone income before income taxes		1		-
Income before income taxes		115		40
Income tax expense		23		8
Net income available to common stockholders	$	92	$	32
Consolidated income tax expense
Income tax expense attributable to operating subsidiaries	$	12	$	7
Income tax expense attributable to IBG, Inc.		23		8
Consolidated income tax expense	$	35	$	15

Operating Results

Income before income taxes, for the current quarter, increased $319 million, or 144%, to $541 million, compared to the prior year quarter. Pretax profit margin was 72% for the current quarter and 41% for the prior year quarter.

Comparing our operating results for the current quarter to the prior year quarter using non-GAAP financial measures described below, adjusted net revenues were $650 million, up 24%; adjusted income before income taxes was $437 million, up 41%; and adjusted pre-tax profit margin was 67% for the current quarter and 59% for the prior year quarter. See the “Non-GAAP Financial Measures” section below in this Item 2 for additional details.

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50

Six Months Ended June 30, 2021 (“current six-month period”) compared to the Six Months Ended June 30, 2020 (“prior year six-month period”)

Net Revenues

Total net revenues, for the current six-month period, increased $576 million, or 54%, compared to the prior year six-month period, to $1,647 million. The increase in net revenues was due to higher commissions, other fees and services, other income, and net interest income.

Commissions

Commissions, for the current six-month period, increased $174 million, or 32%, compared to the prior year six-month period, to $719 million, driven by significantly higher customer trading volumes, particularly in stocks and options. Total customer options contracts and stock share volumes increased 52% and 280%, respectively, while futures contracts decreased 18% compared to the prior year six-month period. Total DARTs for cleared and execution-only customers, for the current six-month period, increased 75% to 2.8 million, compared to 1.6 million for the prior year six-month period. DARTs for cleared customers, i.e., customers for whom we execute trades, as well as clear and carry positions, for the current six-month period, increased 76% to 2.5 million, compared to 1.4 million for the prior year six-month period. Average commission per commissionable order for cleared customers, for the current six-month period, decreased 23% to $2.34, compared to $3.03 for the prior year six-month period, reflecting smaller average order sizes in options and foreign exchange as well as higher exchange rebates passed through to our customers.

Other Fees and Services

Other fees and services, for the current six-month period, increased $33 million, or 42%, compared to the prior year six-month period, to $111 million, driven by an $11 million increase in market data fee income, a $7 million increase in exposure fee income, a $6 million increase in IPO related fee income, a $5 million increase in payments for order flow income from options exchange-mandated programs, and a $3 million increase in account activity fee income; partially offset by a $3 million decrease in FDIC Insured Bank Deposit Sweep Program fee income.

Other Income

Other income, for the current six-month period, increased $242 million, compared to the prior year six-month period, to $238 million. This increase was mainly comprised of $206 million related to our strategic investment in Tiger Brokers, which increased to a $212 million mark-to-market gain in the current six-month period from a $6 million mark-to-market gain in the prior year six-month period and $22 million related to our currency diversification strategy, which lost $11 million in the current six-month period compared to a loss of $33 million in the prior year six-month period.

Interest Income and Interest Expense

Net interest income (interest income less interest expense), for the current six-month period, increased $127 million, or 28%, compared to the prior year six-month period, to $579 million. The increase in net interest income was driven by strong securities lending activity and higher average margin loan balances, tempered by a decrease in the average Federal Funds effective rate.

Net interest income on customer balances, for the current six-month period, decreased $24 million, compared to the prior year six-month period, driven by a decrease in the average federal funds effective rate to 0.07% from 0.66% in the prior year six-month period; partially offset by a $16.5 billion increase in average margin loan balances; a $15.2 billion increase in average customer credit balances, a portion of which were invested in interest-bearing U.S. government securities; and an increase in customer cash balances in negative rate currencies. Outside the U.S., notably in Europe, despite the proportionately higher growth in foreign currency cash balances, negative benchmark interest rates in some currencies have affected our ability to achieve acceptable yields on our segregated cash in this region. See the “Business Environment” section above in this Item 2 for a further discussion about the change in interest rates in the current six-month period.

We earn income on securities loaned and borrowed to support customer long and short stock holdings in margin accounts. In addition, our Stock Yield Enhancement Program provides an opportunity for customers with fully-paid stock to allow us to lend it out. We pay customers a rebate on the cash collateral generally equal to 50% of the income we earn from lending the shares. We place cash and/or U.S. Treasury securities, as collateral securing the loans in the customer’s account, in segregated accounts or at an affiliate acting as collateral agent for the benefit of our customer.

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In the current six-month period, average securities borrowed balances decreased 10%, to $4.0 billion while average securities loaned balances increased 129%, to $11.1 billion, compared to the prior year six-month period. Net interest earned from securities lending is affected by the level of demand for securities positions held by our customers that investors were looking to sell short. During the current six-month period, net interest earned from securities lending transactions increased $169 million, or 119%, compared to the prior year six-month period, as we were able to satisfy investor demand for more of the hard-to-borrow securities they sought to sell short. It should be noted that securities lending transactions entered into to support customer activity may produce interest income (expense) that is offset by interest expense (income) related to customer balances.

The Company measures return on interest-earning assets using net interest margin (“NIM”). NIM is computed by dividing the annualized net interest income by the average interest-earning assets for the period. Interest-earning assets consist of cash and securities segregated for regulatory purposes (including U.S. government securities and securities purchased under agreements to resell), customer margin loans, securities borrowed, other interest-earning assets (solely firm assets), and customer cash balances swept into FDIC insured banks as part of our Insured Bank Deposit Sweep Program. Interest-bearing liabilities consist of customer credit balances, securities loaned, and other interest-bearing liabilities.

Yields are generally a reflection of benchmark interest rates in each currency in which the Company and its customers hold cash balances. Because a substantial portion of customer cash and margin loans are denominated in currencies other than the U.S. dollar, changes in U.S. benchmark interest rates do not impact the total amount of segregated cash and securities, customer margin loans and customer credit balances. Furthermore, because interest, when benchmark rates are at higher levels, is paid only on eligible cash credit balances (i.e., balances over $10 thousand or equivalent, in securities accounts with over $100 thousand in equity, and in smaller accounts at reduced rates), changes in benchmark interest rates are not passed through to the total amount of customer credit balances. Finally, the Company’s policies with respect to currencies with negative interest rates impact the yields on segregated cash and customer credit balances as effective interest rates in those currencies fluctuate.

Generally, as benchmark interest rates rise, a larger portion of the interest earned on securities lending transactions is reported as net interest income on “Segregated cash and securities, net” instead of “Securities borrowed and loaned, net” because interest earned on cash collateral held in specially designated bank accounts for the benefit of customers, in accordance with the U.S. customer protection rules, increases.

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The table below presents net interest income information corresponding to interest-earning assets and interest-bearing liabilities for the periods indicated.

	Six Months Ended June 30,
	2021		2020
	(in millions)
Average interest-earning assets
Segregated cash and securities	$	43,199	$	38,978
Customer margin loans		42,099		25,614
Securities borrowed		3,971		4,420
Other interest-earning assets		6,414		5,501
FDIC sweeps 1		2,783		2,745
	$	98,465	$	77,258
Average interest-bearing liabilities
Customer credit balances	$	77,782	$	62,564
Securities loaned		11,093		4,852
Other interest-bearing liabilities		217		375
	$	89,091	$	67,791
Net Interest income
Segregated cash and securities, net	$	0	$	145
Customer margin loans 2		245		204
Securities borrowed and loaned, net		311		142
Customer credit balances, net 2		17		(63)
Other net interest income 1,3		16		37
Net interest income 3	$	589	$	465
Net interest margin ("NIM")		1.21%		1.21%
Annualized Yields
Segregated cash and securities		0.00%		0.75%
Customer margin loans		1.17%		1.60%
Customer credit balances		-0.04%		0.20%

______________________________

(1)Represents the average amount of customer cash swept into FDIC-insured banks as part of our Insured Bank Deposit Sweep Program. This item is not recorded in the Company's condensed consolidated statements of financial condition. Income derived from program deposits is reported in other net interest income in the table above.
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(2)Interest income and interest expense on customer margin loans and customer credit balances, respectively, are calculated on daily cash balances within each customer’s account on a net basis, which may result in an offset of balances across multiple account segments (e.g., between securities and commodities segments).

(3)Includes income from financial instruments that has the same characteristics as interest, but is reported in other fees and services and other income in the Company’s condensed consolidated statements of comprehensive income. For the six months ended June 30, 2021 and 2020, $12 million and $8 million were reported in other fees and services, respectively, and -$1 million and $5 million were reported in other income, respectively.
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Non-Interest Expenses

Non-interest expenses, for the current six-month period, decreased $74 million, or 14%, compared to the prior year six-month period, to $467 million, mainly due to a $75 million decrease in general and administrative expenses and a $31 million decrease in execution, clearing and distribution fees, partially offset by a $31 million increase in employee compensation and benefits. As a percentage of total net revenues, non-interest expenses were 28% for the current six-month period and 51% for the prior year six-month period.

Execution, Clearing and Distribution Fees

Execution, clearing and distribution fees, for the current six-month period, decreased $31 million, or 20%, compared to the prior year six-month period, to $122 million, primarily driven by a $46 million decrease in exchange fees due to higher offsetting volume-related liquidity rebates received from certain exchanges, partially offset by a $9 million increase in market data fees and a $5 million increase in regulatory transaction fees. As a percentage of total net revenues, execution, clearing and distribution fees were 7% for the current six-month period and 14% for the prior year six-month period.

Employee Compensation and Benefits

Employee compensation and benefits expenses, for the current six-month period, increased $31 million, or 19%, compared to the prior year six-month period, to $193 million, associated with a 29% increase in the average number of employees to 2,217 for the current six-month period, compared to 1,720 for the prior year six-month period. We continued to add staff in customer service, compliance, and software development. As we continue to grow, our focus on automation has allowed us to maintain a relatively small staff. As a percentage of total net revenues, employee compensation and benefits expenses were 12% for the current six-month period and 15% for the prior year six-month period.

Occupancy, Depreciation and Amortization

Occupancy, depreciation and amortization expenses, for the current six-month period, increased $5 million, or 15%, compared to the prior year six-month period, to $39 million, mainly due to higher costs related to the expansion of our physical space for both offices and data centers. As a percentage of total net revenues, occupancy, depreciation and amortization expenses were 2% for the current six-month period and 3% for the prior year six-month period.

Communications

Communications expenses, for the current six-month period, increased $3 million, or 23%, compared to the prior year six-month period, to $16 million. As a percentage of total net revenues, communications expenses were 1% for both the current six-month period and prior year six-month period.

General and Administrative

General and administrative expenses, for the current six-month period, decreased $75 million, or 44%, compared to the prior year six-month period, to $94 million, primarily due to the non-recurrence of $103 million in expenses incurred to compensate certain affected customers in connection with their losses on West Texas Intermediate Crude Oil contracts in April 2020; partially offset by $19 million in additional costs for Brexit-related regulatory onboarding to bring our new brokerage operations on line in Europe and a $9 million increase in advertising expenses. As a percentage of total net revenues, general and administrative expenses were 6% for the current six-month period and 16% for the prior year six-month period.

Customer Bad Debt

Customer bad debt expense, for the current six-month period, decreased $7 million, compared to the prior year six-month period, to $3 million.

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Income Tax Expense

We pay U.S. federal, state and local income taxes on our taxable income, which is proportional to the percentage we own of IBG LLC. Also, our operating subsidiaries are subject to income tax in the respective jurisdictions in which they operate.

Income tax expense, for the current six-month period, increased $55 million, or 167%, compared to the prior year six-month period, to $88 million, primarily due to (1) higher income tax expense attributable to our operating subsidiaries outside the U.S., driven by higher income before taxes and an additional $6 million expense related to the consolidation of European operations in the aftermath of Brexit; and (2) higher U.S. income tax expense driven by higher income before taxes and IBG, Inc.’s higher average ownership percentage of IBG LLC which rose from 18.6% to 21.9%.

The table below presents information about our income tax expense for the periods indicated.

	Six Months Ended June 30,
	2021		2020
	(in millions, except %)
Consolidated
Consolidated income before income taxes	$	1,180	$	530
IBG, Inc. stand-alone income before income taxes		1		-
Operating subsidiaries income before income taxes	$	1,179	$	530
Operating subsidiaries
Income before income taxes	$	1,179	$	530
Income tax expense		38		16
Net income available to members	$	1,141	$	514
IBG, Inc.
Average ownership percentage in IBG LLC		21.9%		18.6%
Net income available to IBG, Inc. from operating subsidiaries	$	248	$	95
IBG, Inc. stand-alone income before income taxes		1		-
Income before income taxes		249		95
Income tax expense		50		17
Net income available to common stockholders	$	199	$	78
Consolidated income tax expense
Income tax expense attributable to operating subsidiaries	$	38	$	16
Income tax expense attributable to IBG, Inc.		50		17
Consolidated income tax expense	$	88	$	33

Operating Results

Income before income taxes, for the current six-month period, increased $650 million, or 123%, to $1,180 million, compared to the prior year six-month period. Pretax profit margin was 72% for the current six-month period and 49% for the prior year six-month period.

Comparing our operating results for the current six-month period to the prior year six-month period, using non-GAAP financial measures described below, adjusted net revenues were $1,446 million, up 31%; adjusted income before income taxes was $979 million, up 47%; and adjusted pre-tax profit margin was 68% for the current six-month period and 60% for the prior year six-month period. See the “Non-GAAP Financial Measures” section below in this Item 2 for additional details.

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Non-GAAP Financial Measures

We use certain non-GAAP financial measures as additional measures to enhance the understanding of our financial results. These non-GAAP financial measures include adjusted net revenues, adjusted income before income taxes, adjusted net income available for common stockholders and adjusted diluted earnings per share (“EPS”). We believe that these non-GAAP financial measures are important measures of our financial performance because they exclude certain items that may not be indicative of our core operating results and business outlook. We believe these non-GAAP financial measures may be useful to investors and analysts in evaluating the operating performance of the business and facilitating a meaningful comparison of our results in the current period to those in prior and future periods.

Adjusted net revenues, adjusted income before income taxes, adjusted net income available for common stockholders and adjusted EPS are non-GAAP financial measures as defined by SEC Regulation G.

•We define adjusted net revenues as net revenues adjusted to remove the effect of our currency diversification strategy and net mark-to-market gains (losses) on investments.

•We define adjusted income before income taxes as income before income taxes adjusted to remove the effect of our currency diversification strategy, net mark-to-market gains (losses) on investments, customer compensation expenses, and unusual bad debt expense.

•We define adjusted net income available to common stockholders as net income available for common stockholders adjusted to remove the after-tax effects attributable to IBG, Inc. of our currency diversification strategy, net mark-to-market gains (losses) on investments, customer compensation expenses, and unusual bad debt expense.

Mark-to-market on investments represents the net mark-to-market gains (losses) on our U.S. government securities portfolio, which are typically held to maturity, investments in equity securities that do not qualify for equity method accounting which are measured at fair value, and equity securities taken over by the Company from customers related to losses on margin loans described below.

Customer compensation expenses were incurred to compensate certain affected customers in connection with their losses on West Texas Intermediate Crude Oil contracts in April 20, 2020, as previously disclosed.

Unusual bad debt expense includes material losses on margin loans resulting from unusual events that occur in the marketplace. For the three and six months ended June 30, 2020, unusual bad debt expense reflects losses incurred by customers in excess of the equity in their accounts related to the West Texas Intermediate Crude Oil event, as previously disclosed.

The effect of our currency diversification strategy, net mark-to-market gains (losses) on investments, customer compensation expenses, and unusual bad debt expense are excluded because management does not believe they are indicative of our underlying core business performance.

These non-GAAP financial measures should be considered in addition to, rather than as a substitute for, measures of financial performance prepared in accordance with GAAP⁽¹⁾.

__________________________

⁽¹⁾ Refers to generally accepted accounting principles in the United States.

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The tables below present a reconciliation of consolidated GAAP to non-GAAP financial measures for the periods indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Adjusted net revenues
Net revenues - GAAP	$	754	$	539	$	1,647	$	1,071
Non-GAAP adjustments
Currency diversification strategy, net		9		(16)		11		33
Mark-to-market on investments		(113)		-		(212)		-
Total non-GAAP adjustments		(104)		(16)		(201)		33
Adjusted net revenues	$	650	$	523	$	1,446	$	1,104

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Adjusted income before income taxes
Income before income taxes - GAAP	$	541	$	222	$	1,180	$	530
Non-GAAP adjustments
Currency diversification strategy, net		9		(16)		11		33
Mark-to-market on investments		(113)		-		(212)		-
Customer compensation expense		-		103		-		103
Bad debt expense		-		1		-		1
Total non-GAAP adjustments		(104)		88		(201)		137
Adjusted income before income taxes	$	437	$	310	$	979	$	667
Adjusted pre-tax profit margin		67%		59%		68%		60%

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Adjusted net income available for common stockholders
Net income available for common stockholders - GAAP	$	92	$	32	$	199	$	78
Non-GAAP adjustments
Currency diversification strategy, net		2		(3)		2		6
Mark-to-market on investments		(25)		(0)		(46)		0
Customer compensation expense		-		19		-		19
Bad debt expense		-		0		-		0
Income tax effect of above adjustments1		6		(4)		10		(5)
Total non-GAAP adjustments		(17)		12		(34)		20
Adjusted net income available for common stockholders	$	75	$	44	$	165	$	98

Note: Amounts may not add due to rounding.

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	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in dollars, except share amounts)
Adjusted diluted EPS
Diluted EPS - GAAP	$	1.00	$	0.40	$	2.17	$	1.00
Non-GAAP adjustments
Currency diversification strategy, net		0.02		(0.04)		0.03		0.08
Mark-to-market on investments		(0.27)		0.00		(0.50)		0.00
Customer compensation expense		0.00		0.25		0.00		0.24
Bad debt expense		0.00		0.00		0.00		0.00
Income tax effect of above adjustments1		0.06		(0.05)		0.11		(0.07)
Total non-GAAP adjustments		(0.19)		0.16		(0.37)		0.26
Adjusted diluted EPS	$	0.82	$	0.57	$	1.80	$	1.26
Diluted weighted average common shares outstanding		92,199,169		78,031,462		91,984,246		77,799,963

Note: Amounts may not add due to rounding.

______________________________

(1)The income tax effect is estimated using the corporate income tax rates applicable to the Company.

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Liquidity and Capital Resources

We maintain a highly liquid balance sheet. The majority of our assets consist of investments of customer funds, collateralized receivables arising from customer-related and proprietary securities transactions, and exchange-listed marketable securities, which are marked-to-market daily. Collateralized receivables consist primarily of customer margin loans, securities borrowed and securities purchased under agreements to resell. As of June 30, 2021, total assets were $104.3 billion of which approximately $103.2 billion, or 98.9%, were considered liquid.

Decisions on the allocation of capital are based upon, among other things, prudent risk management guidelines, potential liquidity and cash flow needs for current and future business activities, regulatory capital requirements, and projected profitability. Our Treasury department, Market Risk Committee and other management control groups assist in evaluating, monitoring and controlling the impact that our business activities have on our financial condition, liquidity and capital structure. The objective of these policies is to support our business strategies while ensuring ongoing and sufficient liquidity. Our significant excess regulatory capital comprises an aggregate across our many regulated subsidiaries, and we believe this financial strength provides our customers with a source of comfort.

Daily monitoring of liquidity needs and available collateral levels is undertaken to help ensure that an appropriate liquidity cushion, in the form of cash and unpledged collateral, is maintained at all times. We actively manage our excess liquidity and we maintain significant borrowing facilities through the securities lending markets and with banks. As a general practice, we maintain sufficient levels of cash on hand to provide us with a buffer should we need immediately available funds for any reason. In addition, pursuant to our liquidity management plan we perform periodic liquidity stress tests, which are designed to identify and reserve liquid assets that would be available under market or idiosyncratic stress events. Based on our current level of operations, we believe our cash flows from operations, available cash and available borrowings will be adequate to meet our future liquidity needs for more than the next twelve months.

As of June 30, 2021, liability balances in connection with short-term borrowings, securities loaned, and payable to customers were higher than their average monthly balances during the current quarter.

Cash and cash equivalents held by our non-U.S. operating subsidiaries as of June 30, 2021 were $972 million ($1,560 million as of December 31, 2020). These funds are primarily intended to finance each individual operating subsidiary’s local operations, and thus would not be available to fund U.S. domestic operations unless repatriated through payment of dividends to IBG LLC. As of June 30, 2021, we had no intention to repatriate any amounts from non-U.S. operating subsidiaries. With the enactment of the U.S. Tax Cuts and Jobs Act on December 22, 2017, we recognized a liability for the one-time transition tax on deemed repatriation of earnings of some of our foreign subsidiaries for the year ended December 31, 2017. As a result, in the event dividends were to be paid to the Company in the future by a non-U.S. operating subsidiaries, the Company would not be required to accrue and pay income taxes on such dividends, except for foreign taxes in the form of dividend withholding tax, if any, imposed on the recipient of the distribution or dividend distribution tax imposed on the payor of the distribution.

Historically, our consolidated equity has consisted primarily of accumulated retained earnings, which to date have been sufficient to fund our operations and growth. Our consolidated equity increased 20% to $9.9 billion as of June 30, 2021 from $8.3 billion as of June 30, 2020. This increase is attributable to total comprehensive income, partially offset by distributions and dividends paid during the last four quarters.

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Cash Flows

The table below presents our cash flows from operating activities, investing activities and financing activities for the periods indicated.

	Six Months Ended June 30,
	2021		2020
	(in millions)
Net cash provided by operating activities	$	5,058	$	3,646
Net cash used in investing activities		(38)		(23)
Net cash used in financing activities		157		(90)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(55)		(16)
Increase in cash, cash equivalents, and restricted cash	$	5,122	$	3,517

Our cash flows from operating activities are largely a reflection of the changes in customer credit and margin loan balances. Our cash flows from investing activities are primarily related to other investments, capitalized internal software development, purchases and sales of memberships, trading rights and shares at exchanges where we trade, and strategic investments where such investments may enable us to offer better execution alternatives to our current and prospective customers, allow us to influence exchanges to provide competing products at better prices using sophisticated technology, or enable us to acquire either technology or customers faster than we could develop them on our own. Our cash flows from financing activities are comprised of short-term borrowings, issuances and redemptions of short-term senior notes, capital transactions, and payments made to Holdings under the Tax Receivable Agreement. Short-term borrowings from banks, and through our senior notes program are part of our daily cash management in support of operating activities. Capital transactions consist primarily of quarterly dividends paid to common stockholders and related distributions paid to Holdings.

Six months Ended June 30, 2021: Our cash, cash equivalents, and restricted cash (i.e., cash and cash equivalents that are subject to withdrawal or usage restrictions) increased by $5,122 million to $25.3 billion for the six months ended June 30, 2021. We raised $5,058 million in net cash from operating activities mainly driven by customer credit balances which increased by $5.6 billion; investments in securities segregated for regulatory purposes which decreased $12.2 billion; partially offset by customer margin loans which increased by $10.6 billion. We used net cash of $119 million in our investing and financing activities, primarily for distributions to noncontrolling interests, dividends paid to our common stockholders, and issuances and redemptions of short-term senior notes. Investing activities mainly consisted of purchases of property, equipment and intangible assets.

Six months Ended June 30, 2020: For a discussion of changes in cash flows for the six months ended June 30, 2020 refer to our Quarterly Report on Form 10-Q filed with the SEC on August 10, 2020.

Senior Notes

During 2020, IBG LLC initiated a program to offer senior notes in private placements to certain qualified customers of IB LLC. IBG LLC intends to use the proceeds for general financing purposes when interest spread opportunities arise. The senior notes are offered at an issue price of $1 thousand dollars per note at an interest rate calculated by adding the benchmark rate to a rate (spread) that IBG LLC announces from time-to-time. The benchmark rate is the effective federal funds rate as reported by the Federal Reserve Bank of New York on the morning of the date of the offering. The senior notes mature no later than the thirtieth day following the issuance date, and IBG LLC, at its option, may redeem the senior notes at any time, at a redemption price equal to 100% of the principal amount of the senior notes to be redeemed, plus accrued and unpaid interest.

During the six months ended June 30, 2021 IBG LLC issued senior notes of $1,237 million and redeemed senior notes of $1,081 million, respectively. The senior notes carried a weighted average interest rate of 1%. As of June 30, 2021, IBG LLC had $252 million of senior notes outstanding, all of which carry a 1% per annum interest rate, and are included in short-term borrowings in the condensed consolidated statements of financial condition.

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Regulatory Capital Requirements

As of June 30, 2021, all operating subsidiaries were in compliance with their respective regulatory capital requirements. For additional information regarding our regulatory capital requirements see Note 15 – ‘‘Regulatory Requirements’’ to the unaudited condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Capital Expenditures

Our capital expenditures are comprised of compensation costs of our software engineering staff for development of software for internal use and expenditures for computer, networking and communications hardware, and leasehold improvements. These expenditure items are reported as property, equipment, and intangible assets. Capital expenditures for property, equipment, and intangible assets were approximately $38 million and $22 million for the six months ended June 30, 2021 and 2020, respectively. In the future, we plan to meet capital expenditure needs with cash from operations and cash on hand, as we continue our focus on technology infrastructure initiatives to further enhance our competitive position. In response to changing economic conditions, we believe we have the flexibility to modify our capital expenditures by adjusting them (either upward or downward) to match our actual performance. If we pursue any additional strategic acquisitions, we may incur additional capital expenditures.

Seasonality

Our businesses are subject to seasonal fluctuations, reflecting varying numbers of market participants at times during the year, varying numbers of trading days from quarter-to-quarter, and declines in trading activity due to holidays. Typical seasonal trends may be superseded by market or world events, which can have a significant impact on prices and trading volume.

Inflation

Although we cannot accurately anticipate the effects of inflation on our operations, we believe that, for the three most recent years, inflation has not had a material impact on our results of operations and will not likely have a material impact in the foreseeable future.

Investments in U.S. Government Securities

We invest in U.S. government securities for the purpose of satisfying U.S. regulatory requirements. As a broker-dealer, unlike banks, we are required to mark these investments to market even though we intend to hold them to maturity. Sudden increases (decreases) in interest rates will cause mark-to-market losses (gains) on these securities, which are recovered (eliminated) if we hold them to maturity, as currently intended. The impact of changes in interest rates is further described in Part I, Item 3 of this Quarterly Report on Form 10-Q entitled “Quantitative and Qualitative Disclosures about Market Risk.”

Strategic Investments and Acquisitions

We regularly evaluate potential strategic investments and acquisitions. We hold strategic investments in certain electronic trading exchanges, including BOX Options Exchange, LLC. We also hold a strategic investment in Tiger Brokers, an online stock brokerage established for Chinese retail and institutional customers, in which we have a beneficial ownership interest of 7.6%.

We intend to continue making acquisitions on an opportunistic basis, generally only when the acquisition candidate will, in our opinion, enable us to offer better execution alternatives to our current and prospective customers, allow us to influence exchanges to provide competing products at better prices using sophisticated technology, or enable us to acquire either technology or customers faster than we could develop them on our own.

As announced on December 4, 2020, we signed an agreement with Folio Investments Inc. to acquire its self-directed retail brokerage segment. The transaction closed in January 2021 and resulted in the acquisition of approximately 57,000 customer accounts.

As of June 30, 2021, other than the transaction disclosed above there were no other definitive agreements with respect to any material acquisition.

Certain Information Concerning Off-Balance-Sheet Arrangements

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

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Critical Accounting Policies and Estimates

Our consolidated financial statements have been prepared in accordance with U.S. GAAP, which requires management to make estimates and assumptions that affect the reported amounts and disclosures in the consolidated financial statements and accompanying notes. These estimates and assumptions are based on judgment and the best available information at the time. Therefore, actual results could differ materially from those estimates. We believe that the critical policies listed below represent the most significant estimates used in the preparation of our consolidated financial statements. See Note 2 – “Significant Accounting Policies” to the unaudited condensed consolidated financial statements for a summary of our significant accounting policies in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Contingencies

Our policy is to estimate and accrue for potential losses that may arise out of litigation and regulatory proceedings, to the extent that such losses are probable and can be estimated. Significant judgment is required in making these estimates and our final liabilities may ultimately be materially different. Our total liability accrued with respect to litigation and regulatory proceedings is determined on a case-by-case basis and represents an estimate of probable losses based on, among other factors, the progress of each case, our experience with and industry experience with similar cases and the opinions and views of internal and external legal counsel. Given the inherent difficulty of predicting the outcome of our litigation and regulatory matters, particularly in cases or proceedings in which substantial or indeterminate damages or fines are sought, or where cases or proceedings are in the early stages, we cannot estimate losses or ranges of losses for cases or proceedings where there is only a reasonable possibility that a loss may be incurred.

Income Taxes

Our income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits are based on enacted tax laws and reflect management’s best assessment of estimated future taxes to be paid. We are subject to income taxes in both the U.S. and numerous foreign jurisdictions. Determining income tax expense requires significant judgment and estimates.

Deferred income tax assets and liabilities arise from temporary differences between the tax and financial statement recognition of the underlying assets and liabilities. In evaluating our ability to recover our deferred tax assets within the jurisdictions from which they arise, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. In projecting future taxable income, historical results are adjusted for changes in accounting policies and incorporate assumptions including the amount of future state, federal and foreign pre-tax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax-planning strategies. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates we are using to manage the underlying businesses. In evaluating the objective evidence that historical results provide, three years of cumulative operating income (loss) are considered. Deferred income taxes have not been provided for U.S. tax liabilities or for additional foreign taxes on the unremitted earnings of foreign subsidiaries that have been indefinitely reinvested.

The calculation of our tax liabilities involves dealing with uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across our global operations. Changes in tax laws and rates could also affect recorded deferred tax assets and liabilities in the future. We record tax liabilities in accordance with Financial Accounting Standards Board (“FASB”) ASC Topic 740 and adjust these liabilities when management’s judgment changes as a result of the evaluation of new information not previously available. Because of the complexity of some of these uncertainties, the ultimate resolution may result in payments that are different from the current estimates of these tax liabilities. These differences will be reflected as increases or decreases to income tax expense in the period in which new information becomes available.

We recognize that a tax benefit from an uncertain tax position may be recognized only when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of the technical merits. A tax position that meets this standard is measured at the largest amount of benefit that will more likely than not be realized on settlement.

Accounting Pronouncements Issued But Not Yet Adopted

For additional information regarding FASB Accounting Standards Updates (“ASU”s) that have been issued but not yet adopted and that may impact the Company, refer to Note 2 – “Significant Accounting Policies” to the unaudited condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on form 10-Q. As of June 30, 2021, there were no accounting pronouncements issued but not adopted that were relevant to the Company.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to various market risks. Our exposures to market risks arise from assumptions built into our pricing models, equity price risk, foreign currency exchange rate fluctuations related to our international operations, changes in interest rates and risks relating to the extension of margin credit to our customers.

Market risk refers to the risk that a change in the level of one or more market prices, rates, indices, implied volatilities (the price volatility of the underlying instrument imputed from option prices), correlations or other market factors, such as market liquidity, will result in losses for a position or portfolio. Generally, we incur trading-related market risk as a result of our remaining market making activities, where the substantial majority of our Value-at-Risk (“VaR”) for market risk exposures is generated. In addition, we incur non-trading-related market risk primarily from investment activities and from foreign currency exposure held in the equity of our foreign subsidiaries, i.e., our non-U.S. brokerage subsidiaries and information technology subsidiaries, and held to meet target balances in our currency diversification strategy.

We use various risk management tools in managing our market risk, which are embedded in our real-time market making systems. We employ certain hedging and risk management techniques to protect us from a severe market dislocation. Our risk management policies are developed and implemented by our steering committee, which is chaired by our Chief Executive Officer and comprised of senior executives of our various operating subsidiaries. The strategy of our remaining market making activities is to calculate quotes a few seconds ahead of the market and execute small trades at a tiny but favorable differential as a result. This strategy is made possible by our proprietary pricing model, which evaluates and monitors the risks inherent in our portfolio, assimilates external market data and reevaluates the outstanding quotes in our portfolio many times per second. Our model automatically rebalances our positions throughout each trading day to manage risk exposures on our options and futures positions and the underlying securities, and will price the increased risk that a position would add to the overall portfolio into the bid and offer prices we post. Under risk management policies implemented and monitored primarily through our computer systems, reports to management, including risk profiles, profit and loss analysis and trading performance, are prepared on a real-time basis as well as daily and periodical bases. Although our remaining market making activities are completely automated, the trading process and our risk are monitored by a team of individuals who, in real time, observe various risk parameters of our consolidated positions. Our assets and liabilities are marked-to-market daily for financial reporting purposes and re-valued continuously throughout the trading day for risk management and asset/liability management purposes.

We use a covariant VaR methodology to measure, monitor and review the market risk of our market making portfolios, with the exception of fixed income products, and our currency exposures. The risk of fixed income products, which comprise primarily U.S. government securities, is measured using a stress test.

Pricing Model Exposure

As described above, our proprietary pricing model, which continuously evaluates and monitors the risks inherent in our portfolio, assimilates external market data and reevaluates the outstanding quotes in our entire portfolio many times per second. Certain aspects of the model rely on historical prices of securities. If the behavior of price movements of individual securities diverges substantially from what their historical behavior would predict, we might incur trading losses. We attempt to limit such risks by diversifying our portfolio across many different options, futures and underlying securities and avoiding concentrations of positions based on the same underlying security. Historically, our losses from these events have been immaterial in comparison to our annual trading profits.

Foreign Currency Exposure

As a result of our international activities and accumulated earnings in our foreign subsidiaries, our income and net worth is exposed to fluctuations in foreign exchange rates. For example, our European operations and some of our Asian operations are conducted by our Swiss subsidiary, IBKRFS. IBKRFS is regulated by the Swiss Financial Market Supervisory Authority as a securities dealer and its financial statements are presented in Swiss francs. Accordingly, IBKRFS is exposed to certain foreign exchange risks as described below:

IBKRFS buys and sells securities denominated in various currencies and carries bank balances and borrows and lends such currencies in its regular course of business. At the end of each accounting period, IBKRFS’ assets and liabilities are revalued into Swiss francs for presentation in its financial statements. The resulting foreign currency gains or losses are reported in IBKRFS’ income statement and, as translated into U.S. dollars for U.S. GAAP purposes, in our condensed consolidated statements of comprehensive income, as a component of other income.
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IBKRFS’ financial statements are presented in Swiss francs (i.e., its functional currency) as noted above. At the end of each accounting period, IBKRFS’ net worth is translated at the then prevailing exchange rate into U.S. dollars and the resulting translation gain or loss is reported as OCI in our condensed consolidated statements of financial condition and condensed consolidated statements of comprehensive income. OCI is also produced by our other non-U.S. subsidiaries.

Historically, we have taken the approach of not hedging the above exposures, based on the notion that the cost of constantly hedging over the years would amount to more than the random impact of rate changes on our non-U.S. dollar balances. For instance, an increase in the value of the Swiss franc would be unfavorable to the earnings of IBKRFS but would be counterbalanced to some extent by the fact that the translation gain or loss into U.S. dollars is likely to move in the opposite direction.

Our risk management systems incorporate cash forex to hedge our currency exposure at little or no cost. The majority of currency spot positions held as part of our currency diversification strategy are regularly transferred to the parent holding company, IBG LLC, where they are held. In connection with the development of our currency diversification strategy, we determined to base our net worth in GLOBALs, a basket of currencies.

Because we conduct business in many countries and many currencies and because we consider ourselves a global enterprise based in a diversified basket of currencies rather than a U.S. dollar based company, we actively manage our global currency exposure by maintaining our equity in GLOBALs. The U.S. dollar value of the GLOBAL increased 1.23%, as of June 30, 2021 compared to June 30, 2020. As of June 30, 2021, approximately 26% of our equity was denominated in currencies other than the U.S. dollar.

The table below presents a comparison of the U.S. dollar equivalent of the GLOBAL for the periods indicated.

			As of 6/30/2020									As of 6/30/2021
				GLOBAL in		% of	Net Equity			New			GLOBAL in		% of	Net Equity			CHANGE in
Currency	Composition	FX Rate		USD Equiv.		Comp.	(in USD millions)			Composition	FX Rate		USD Equiv.		Comp.	(in USD millions)			% of Comp.
USD	0.68		1.0000		0.680	70.7%		$	5,834	0.72		1.0000		0.720	73.9%		$	7,339		3.2%
EUR	0.09		1.1233		0.101	10.5%			867	0.09		1.1857		0.107	11.0%			1,088		0.4%
JPY	4.41		0.0093		0.041	4.2%			351	3.91		0.0090		0.035	3.6%			359		-0.6%
GBP	0.02		1.2401		0.025	2.6%			213	0.02		1.3833		0.028	2.8%			282		0.3%
CHF	0.02		1.0557		0.021	2.2%			181	0.02		1.0811		0.022	2.2%			220		0.0%
CNH	0.10		0.1414		0.014	1.5%			121	0.13		0.1546		0.020	2.1%			205		0.6%
INR	1.10		0.0132		0.015	1.5%			125	1.10		0.0134		0.015	1.5%			151		0.0%
CAD	0.02		0.7366		0.015	1.5%			126	0.02		0.8066		0.012	1.2%			123		-0.3%
AUD	0.02		0.6903		0.014	1.4%			119	0.02		0.7499		0.011	1.2%			115		-0.3%
HKD	0.14		0.1290		0.018	1.9%			155	0.04		0.1288		0.005	0.5%			46		-1.4%
MXN	0.17		0.0435		0.007	0.8%			63	-		-		-	0.0%			-		-0.8%
SEK	0.05		0.1073		0.005	0.6%			46	-		-		-	0.0%			-		-0.6%
NOK	0.03		0.1039		0.003	0.3%			27	-		-		-	0.0%			-		-0.3%
DKK	0.02		0.1507		0.003	0.3%			26	-		-		-	0.0%			-		-0.3%
					0.962	100.0%		$	8,254					0.974	100.0%		$	9,928		0.0%

The effects of our currency diversification strategy appear in two places in the condensed consolidated financial statements: (1) as a component of other income in the condensed consolidated statements of comprehensive income and (2) as OCI in the condensed consolidated statements of financial condition and the condensed consolidated statements of comprehensive income. The full effect of the GLOBAL is captured in the condensed consolidated statements of comprehensive income.

Reported results on a comprehensive basis reflect the U.S. GAAP convention that requires the reporting of currency translation results contained in OCI as part of reportable earnings.

Change in the Composition of the “GLOBAL”

As a result of a periodic assessment, we decided to reduce the number of currencies in the GLOBAL and realign the relative weights of each component to better reflect the global diversification of our business going forward. We removed the Danish krone (DKK), the Mexican peso (MXN), the Norwegian krone (NOK) and the Swedish krona (SEK). The new composition contains 10 currencies, down from 14 in the prior composition. The new composition took effect as of the close of business on June 30, 2020 and the conversion to the new targeted currency holdings took place shortly thereafter.

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Interest Rate Risk

We had no variable-rate debt outstanding as of June 30, 2021.

We pay our customers interest based on benchmark overnight interest rates in various currencies, when interest rates are above a benchmark rate plus a small spread, on cash balances above $10 thousand (or equivalent) in securities accounts holding more than $100 thousand and at lower, tiered rates for accounts holding less than $100 thousand (or equivalent) net asset value. In currencies with negative rates, we pass through the cost of holding certain cash balances to our customers; therefore, we charge our customers interest on these cash balances. Our margin balances are priced to a benchmark rate plus a spread, with a minimum charge of 0.75% in U.S. dollars. At negative or near-zero benchmark rates, our interest sensitivity to rate increases is limited since a new, higher benchmark rate plus a spread, may still be below the minimum charge. In a normal rate environment, we typically invest a portion of these funds in U.S. government securities with maturities of up to two years. If interest rates were to increase rapidly and substantially, our net interest income would not increase proportionally with the interest rates for the portion of the funds invested in the U.S. government securities with fixed yields. In addition, the mark-to-market changes in the value of these fixed rate securities will be reflected in other income, instead of net interest income. Based on customer balances and investments outstanding as of June 30, 2021, and assuming reinvestment of maturing instruments in instruments of short-term duration, an unexpected increase of 0.25% over current U.S. dollar interest rate levels would increase our net interest income by approximately $99 million over the first year and $102 million on an annualized basis, assuming the full effect of reinvestment at higher rates. Our interest rate sensitivity estimate contains separate assumptions for U.S. dollar rates from other currencies’ rates and it isolates the effects of a rate increase on reinvestments. We do not approximate mark-to-market impact from interest rate changes; if U.S. government securities whose prices were to fall under these scenarios were held to maturity, as intended, then the reduction in other income would be temporary, as the securities would mature at par value.

We also face the potential for reduced net interest income from customer deposits due to interest rate spread compression in a low rate environment. Based on customer balances and investments outstanding as of June 30, 2021, and assuming reinvestment of maturing instruments in instruments of short-term duration, an unexpected decrease in U.S. dollar interest rates of 0.25% would decrease our net interest income by approximately $32 million over the first year and $32 million on an annualized basis, assuming the full effect of reinvestment at lower rates.

We also face interest rate risk due to positions carried for our remaining market making activities to the extent that long or short stock positions may have been established for future or forward dates on options or futures contracts and the value of such positions are impacted by interest rates. The amount of such risk cannot be quantified, however, the reduction of market making positions has substantially reduced this exposure.

Dividend Risk

We face dividend risk in our remaining market making activities as we derive revenues and incur expenses in the form of dividend income and expense, respectively, from our inventory of equity securities, and must make payments in lieu of dividends on short positions in equity securities within our portfolio. Projected future dividends are an important component of pricing equity options and other derivatives, and incorrect projections may lead to trading losses. The amount of such risk cannot be quantified, however, the reduction of market making positions has substantially reduced this exposure.

Margin Loans

We extend margin loans to our customers, which are subject to various regulatory requirements. Margin loans are collateralized by cash and securities in the customers’ accounts. The risks associated with margin credit increase during periods of fast market movements or in cases where collateral is concentrated and market movements occur. During such times, customers who utilize margin loans and who have collateralized their obligations with securities may find that the securities have a rapidly depreciating value and may not be sufficient to cover their obligations in the event of a liquidation. We are also exposed to credit risk when our customers execute transactions, such as short sales of options and equities that can expose them to risk beyond their invested capital.

We expect this kind of exposure to increase with the growth of our overall business. Because we indemnify and hold harmless our clearing houses and counterparties from certain liabilities or claims, the use of margin loans and short sales may expose us to significant off-balance-sheet risk in the event that collateral requirements are not sufficient to fully cover losses that customers may incur and those customers fail to satisfy their obligations. As of June 30, 2021, we had $50.0 billion in margin loans extended to our customers. The amount of risk to which we are exposed from the margin loans we extend to our customers and from short sale transactions by our customers is unlimited and not quantifiable as the risk is dependent upon analysis of a potential significant and undeterminable rise or fall in stock prices. Our account level margin requirements meet or exceed those required by Regulation T of the Board of Governors of the Federal Reserve and FINRA portfolio margin rules, as applicable. As a matter of practice, we enforce real-time margin compliance monitoring and liquidate customers’ positions if their equity falls below required margin requirements.

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We have a comprehensive policy implemented in accordance with regulatory standards to assess and monitor the suitability of investors to engage in various trading activities. To mitigate our risk, we also continuously monitor customer accounts to detect excessive concentration, large orders or positions, patterns of day trading and other activities that indicate increased risk to us.

Our credit exposure is to a great extent mitigated by our real-time margining system, which automatically evaluates each account throughout the trading day and closes out positions automatically for accounts that are found to be under-margined. While this methodology is effective in most situations, it may not be effective in situations where no liquid market exists for the relevant securities or commodities or where, for any reason, automatic liquidation for certain accounts has been disabled. Our Risk Management Committee continually monitors and evaluates our risk management policies, including the implementation of policies and procedures to enhance the detection and prevention of potential events to mitigate margin loan losses.

Value-at-Risk

We estimate VaR using an historical approach, which uses the historical daily price returns of underlying assets as well as estimates of the end of day implied volatility for options. Our one-day VaR is defined as the unrealized loss in portfolio value that, based on historically observed market risk factors, would have been exceeded with a frequency of one percent, based on a calculation with a confidence interval of 99%.

Our VaR model generally takes into account exposures to equity and commodity price risk and foreign exchange rates.

We use VaR as one of a range of risk management tools. Among their benefits, VaR models permit estimation of a portfolio’s aggregate market risk exposure, incorporating a range of varied market risks and portfolio assets. One key element of the VaR model is that it reflects risk reduction due to portfolio diversification or hedging activities. However, VaR has various strengths and limitations, which include, but are not limited to: use of historical changes in market risk factors, which may not be accurate predictors of future market conditions, and may not fully incorporate the risk of extreme market events that are outsized relative to observed historical market behavior or reflect the historical distribution of results beyond the confidence interval; and reporting of losses in a single day, which does not reflect the risk of positions that cannot be liquidated or hedged in one day. A small proportion of market risk generated by trading positions is not included in VaR. The modeling of the risk characteristics of some positions relies on approximations that, under certain circumstances, could produce significantly different results from those produced using more precise measures. VaR is most appropriate as a risk measure for trading positions in liquid financial markets and will understate the risk associated with severe events, such as periods of extreme illiquidity.

The VaR calculation simulates the performance of the portfolio based on several years of daily price changes of the underlying assets and determines the VaR as the calculated loss that occurs at the 99^th percentile.

Since the reported VaR statistics are estimates based on historical data, VaR should not be viewed as predictive of our future revenues or financial performance or of our ability to monitor and manage risk. There can be no assurance that our actual losses on a particular day will not exceed the indicated VaR or that such losses will not occur more than one time in 100 trading days. VaR does not predict the magnitude of losses which, should they occur, may be significantly greater than the VaR amount.

Stress Test

We estimate the market risk of our fixed income portfolio using a risk analysis model provided by a leading external vendor. For corporate bonds, this stress test is configured to calculate the change in value of each fixed income security in the portfolio over one day in seven scenarios, each of which represents a parallel shift of the U.S. Treasury yield curve. The scenarios are shifts of +/−100, +/−200 and +/−300 basis points. For U.S. government securities, the stress test is configured to calculate the change in value of each fixed income security in the portfolio over one day in three scenarios each of which represents a parallel shift of the U.S. Treasury yield curve. The scenarios are shifts of +/−25 basis points.

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ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, including our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures pursuant to Rule 13a-15 under the Exchange Act as of the end of the period covered by this report. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of the period covered by this quarterly report, our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) are effective, in all material respects, to ensure that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in Securities and Exchange Commission rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. 

In addition, no change in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) occurred during the period covered by this report quarter that has materially affected, or is likely to materially affect, our internal control over financial reporting. We have not experienced any material impact to our internal controls over financial reporting related to our employees working remotely due to the COVID-19 pandemic. We are continually monitoring and assessing the COVID-19 situation to minimize any impact on the design and operating effectiveness of our internal controls.

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PART II OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

There have been no material changes to the legal proceedings disclosed under Part 1, Item 3 of our Annual Report on Form 10-K filed with the SEC on March 1, 2021 except as updated in Note 13 - “Commitments, Contingencies, and Guarantees” to the unaudited condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q for the quarter ended June 30, 2021.

ITEM 1A. RISK FACTORS

There have been no material changes to the risk factors disclosed in under Part 1, Item 1A of our Annual Report on Form 10-K filed with the SEC on March 1, 2021.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

A summary of the stock repurchase activity for the Company’s second quarter is as follows:

				Total Number	Maximum
				of Shares	Number of Shares that
		Total Number of	Average	Purchased as Part of	May yet be Purchased
		Shares	Price Paid	Publicly Announced	Under the
Period		Purchased	per Share	Plans or Programs	Plans or Programs
May 1 - May 31	Employee Transactions (1)	395,011	69.60	N/A	N/A

________________________

(1)All shares were repurchased from employees who elected to have shares withheld to satisfy their tax withholding obligations

related to the May 9, 2021 vesting of the amended 2007 Stock Incentive Plan. The Company facilitated the sale of these shares in open market transactions. See Note 10 to the condensed consolidated financial statements in Item 1, Part 1 of this Quarterly Report on Form 10-Q for more information regarding this plan.

The Plan provides employees with two options to pay for their withholding tax obligations, which become due when restricted stock units vest: either (1) reimburse the Company via cash payment, or (2) elect to have IBG LLC withhold a portion of the vesting shares. In the case of employees who elect to have the IBG LLC withhold shares to cover their tax obligations, those shares are transferred to IBG LLC, which in turn, sells those shares in open market transactions to recover the amount paid to the tax authorities on the employees’ behalf. As of June 30, 2021 the Company has sold 395,011 shares of its Class A common stock (with a fair value of $27 million) in open market transactions. The proceeds were used to reimburse the Company for withholding taxes paid by the Company on the employees’ behalf.

On October 13, 2015, the Company filed a Post-Effective Amendment to multiple Registration Statements filed under the Securities Act of 1933, as amended on Form S-8 that registered shares of the Company’s Class A common stock, $0.01 par value, for issuance under the Company’s amended 2007 Stock Incentive Plan (the “Plan”). As per General Instruction C of Form S-8, the sale of the shares described above constitutes a resale or reoffer of the Company’s Class A common stock. The Post-Effective Amendment, contains a reoffer prospectus that registers 6,400,000 shares of the Company’s Class A common stock. The reoffer prospectus allows for future sales by IBG LLC, on a continuous or delayed basis, to the public without restriction.

On July 27, 2020, the Company filed a Prospectus Supplement on Form 424B (File Number 333-240121) with the SEC to register up to 990,000 shares of common stock, offering the opportunity for eligible persons to receive awards in the form of such shares by participating in one or more promotions that are designed to attract new customers to the Company’s brokerage platform, increase assets held with the Company’s brokerage subsidiaries and enhance customer loyalty. During the six months ended June 30, 2021, the Company issued 100,000 shares to IBG LLC for distribution to eligible customers of certain of its subsidiaries.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None

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ITEM 5. OTHER INFORMATION

None

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ITEM 6. Exhibits

Exhibit ‎Number	Description
3.1	Amended and Restated Certificate of Incorporation of Interactive Brokers Group, Inc. (filed as Exhibit 3.1 to Amendment No. 2 to the Registration Statement on Form S-1 filed by the Company on April 4, 2007).**
3.2	Amended bylaws of Interactive Brokers Group, Inc. (filed as Exhibit 3.1 to the Form 8-K filed by the Company on February 24, 2016).**
4.1	Description of the Registrant’s Securities.**
10.1	Amended and Restated Operating Agreement of IBG LLC (filed as Exhibit 10.1 to the Quarterly Report on Form 10-Q for the Quarterly Period Ended March 31, 2007 filed by the Company on June 15, 2007).**
10.2	Form of Limited Liability Company Operating Agreement of IBG Holdings LLC (filed as Exhibit 10.5 to Amendment No. 1 to the Registration Statement on Form S-1 filed by the Company on February 12, 2007).**
10.3	Exchange Agreement by and among Interactive Brokers Group, Inc., IBG Holdings LLC, IBG LLC and the Members of IBG LLC (filed as Exhibit 10.3 to the Quarterly Report on Form 10-Q for the Quarterly Period Ended September   30, 2009 filed by the Company on November 11, 2009).**
10.4	Tax Receivable Agreement by and between Interactive Brokers Group, Inc. and IBG Holdings LLC (filed as Exhibit 10.3 to the Quarterly Report on Form 10-Q for the Quarterly Period Ended March 31, 2007 filed by the Company on June 15, 2007).**
10.5	Interactive Brokers Group, Inc. 2007 Stock Incentive Plan, as of April 19, 2018 (filed as exhibit 10.9 to the Quarterly Report on Form 10-Q for the Quarterly Period Ended June 30, 2018, filed by the Company on August 8, 2018).**+
10.6	Interactive Brokers Group, Inc. 2007 ROI Unit Stock Plan. (filed as Exhibit 10.9 to Amendment No. 2 to the Registration Statement on Form S-1 filed by the Company on April 4, 2007).**+
10.7	Interactive Brokers Group, Inc. Amendment to the Exchange Agreement (filed as Exhibit 10.1 to the Form 8-K filed by the Company on June 6, 2012).**+
10.8	Second Amendment to Exchange Agreement by and among Interactive Brokers Group, Inc., IBG Holdings LLC, IBG (filed as Exhibit 10.1 to the Quarterly Report on Form 10-Q for the Quarterly Period Ended September 31, 2015 filed by the Company on November 9, 2015).**
10.9	First Amendment to Limited Liability Company Agreement of IBG Holdings LLC (filed as Exhibit 10.2 to the Quarterly Report on Form 10-Q for the Quarterly Period Ended September 31, 2015 filed by the Company on November 9, 2015).**
31.1	Certification of Chief Executive Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document*
101.SCH	XBRL Extension Schema*
101.CAL	XBRL Extension Calculation Linkbase*
101.DEF	XBRL Extension Definition Linkbase*
101.LAB	XBRL Extension Label Linkbase*
101.PRE	XBRL Extension Presentation Linkbase*
104	Cover Page Interactive Data File – the cover page XBRL tags are embedded within the Inline XBRL document.

**   Previously filed; incorporated herein by reference.

+     These exhibits relate to management contracts or compensatory plans or arrangements.

*     Attached as Exhibit 101 to this Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2021, are the following materials formatted in iXBRL (Inline eXtensible Business Reporting Language) (i) the Condensed Consolidated Statements of Financial Condition, (ii) the Condensed Consolidated Statements of Comprehensive Income, (iii) the Condensed Consolidated Statements of Cash Flows, (iv) the Condensed Consolidated Statement of Changes in Stockholders’ Equity and (v) Notes to the Condensed Consolidated Financial Statements tagged in detail levels 1-4.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

INTERACTIVE BROKERS GROUP, INC.
/s/ Paul J. Brody
Name:	Paul J. Brody
Title:	Chief Financial Officer, Treasurer and Secretary
(Signing both in his capacity as a duly authorized officer and as principal financial officer of the registrant)

Date: August 9, 2021

EX-31.1

EXHIBIT 31.1

CERTIFICATION

I, MilanGalik, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30,  2021of Interactive Brokers Group, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the Audit Committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

	By:	/s/ Milan Galik
	Name:	Milan Galik
	Title:	Chief Executive Officer and President
Date:  August 9,  2021

EX-31.2

EXHIBIT 31.2

CERTIFICATION

I, Paul J. Brody, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30,  2021of Interactive Brokers Group, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the Audit Committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

	By:	/s/ Paul J. Brody
	Name:	Paul J. Brody
	Title:	Chief Financial Officer, Treasurer and Secretary
Date: August 9,  2021

EX-32.1

EXHIBIT 32.1

CERTIFICATION

Pursuant to 18 U.S.C. § 1350, the undersigned officer of Interactive Brokers Group, Inc. (the “Company”) hereby certifies that the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30,  2021(the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	By:	/s/ MilanGalik
	Name:	MilanGalik
	Title:	Chief Executive Officer and President
Date: August 9,  2021

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350 and is not being filed as part of the Report or as a separate disclosure document.

EX-32.2

EXHIBIT 32.2

CERTIFICATION

Pursuant to 18 U.S.C. § 1350, the undersigned officer of Interactive Brokers Group, Inc. (the “Company”) hereby certifies that the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30,  2021(the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	By:	/s/ Paul J. Brody
	Name:	Paul J. Brody
	Title:	Chief Financial Officer, Treasurer and Secretary
Date: August 9,  2021

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350 and is not being filed as part of the Report or as a separate disclosure document.

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Documentation and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 05, 2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	001-33440
Entity Registrant Name	INTERACTIVE BROKERS GROUP, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	30-0390693
Entity Address, Address Line One	One Pickwick Plaza
Entity Address, City or Town	Greenwich
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06830
City Area Code	203
Local Phone Number	618-5800
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	IBKR
Security Exchange Name	NASDAQ
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Current Fiscal Year End Date	--12-31
Fiscal Period Focus	Q2
Fiscal Year Focus	2021
Entity Central Index Key	0001381197
Amendment Flag	false
Common Class A [Member]
Common Stock Shares Outstanding		98,143,146
Common Class B [Member]
Common Stock Shares Outstanding		100

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Consolidated Statements of Financial Condition - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 3,218	$ 4,292
Cash segregated for regulatory purposes	22,099	15,903
Securities - segregated for regulatory purposes	15,635	27,821
Securities borrowed	3,630	4,956
Securities purchased under agreements to resell	4,166	792
Financial instruments owned, at fair value:
Financial instruments owned	657	544
Financial instruments owned and pledged as collateral	69	86
Total financial instruments owned, at fair value	726	630
Receivables:
Customers, less allowance for credit losses of $10 and $17 as of June 30, 2021 and December 31, 2020	49,954	39,333
Receivables from brokers, dealers and clearing organizations	3,983	1,254
Interest receivable	108	104
Total receivables	54,045	40,691
Other assets	812	594
Total assets	104,331	95,679
Liabilities and equity
Short-term borrowings	425	118
Securities loaned	11,580	9,838
Financial instruments sold, not yet purchased, at fair value	191	153
Payables
Payable to customers	81,452	75,882
Payables to brokers, dealers and clearing organizations	207	182
Affiliate	199	199
Accounts payable, accrued expenses and other liabilities	340	298
Interest Payable	9	6
Total payables	82,207	76,567
Total liabilities	94,403	86,676
Commitments, contingencies and guarantees (see Note 13)
Stockholders' equity
Additional paid-in capital	1,277	1,244
Retained earnings	864	683
Accumulated other comprehensive income, net of income taxes of $0 and $0 as of June 30, 2021 and December 31, 2020	14	26
Treasury stock, at cost, 175,058 and 136,784 shares as of June 30, 2021 and December 31, 2020	(6)	(3)
Total stockholders' equity	2,150	1,951
Noncontrolling interests	7,778	7,052
Total equity	9,928	9,003
Total liabilities and stockholders' equity	104,331	95,679
Common Class A [Member]
Stockholders' equity
Common stock, $0.01 par value per share	1	1
Common Class B [Member]
Stockholders' equity
Common stock, $0.01 par value per share

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Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Allowance for credit losses	$ 10	$ 17
Accumulated other comprehensive income tax	$ 0	$ 0
Treasury stock shares	175,058	136,784
Common Class A [Member]
Common stock, par value	$ 0.01	$ 0.01
Shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	92,220,818	90,909,889
Common stock, shares outstanding	92,045,760	90,773,105
Common Class B [Member]
Common stock, par value	$ 0.01	$ 0.01
Shares authorized	100	100
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100

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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Commissions	$ 307	$ 276	$ 719	$ 545
Other fees and services	55	40	111	78
Other income	118	27	238	(4)
Total non-interest income	480	343	1,068	619
Interest income	307	244	697	613
Interest expense	(33)	(48)	(118)	(161)
Total net interest income	274	196	579	452
Total net revenues	754	539	1,647	1,071
Non-interest expenses:
Execution, clearing and distribution fees	54	76	122	153
Employee compensation and benefits	96	82	193	162
Occupancy, depreciation and amortization	19	17	39	34
Communications	8	7	16	13
General and administrative	35	132	94	169
Customer bad debt	1	3	3	10
Total non-interest expenses	213	317	467	541
Income before income taxes	541	222	1,180	530
Income tax expense	35	15	88	33
Net income	506	207	1,092	497
Less net income attributable to noncontrolling interests	414	175	893	419
Net income available for common stockholders	$ 92	$ 32	$ 199	$ 78
Earnings per share:
Basic	$ 1.01	$ 0.41	$ 2.19	$ 1.01
Diluted	$ 1.00	$ 0.40	$ 2.17	$ 1.00
Weighted average common shares outstanding:
Weighted Average Number of Shares Outstanding, Basic	91,365,234	77,357,609	91,078,868	77,054,388
Weighted Average Number of Shares Outstanding, Diluted	92,199,169	78,031,462	91,984,246	77,799,963
Comprehensive income:
Net income available for common stockholders	$ 92	$ 32	$ 199	$ 78
Other comprehensive income:
Cumulative translation adjustment, before income taxes	5	4	(12)	(3)
Income taxes related to items of other comprehensive income
Other comprehensive income (loss), net of tax	5	4	(12)	(3)
Comprehensive income available for common stockholders	97	36	187	75
Comprehensive income attributable to noncontrolling interests:
Net income attributable to noncontrolling interests	414	175	893	419
Other comprehensive income - cumulative translation adjustment	16	18	(43)	(13)
Comprehensive income attributable to noncontrolling interests	$ 430	$ 193	$ 850	$ 406

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Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 1,092	$ 497
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Deferred income taxes	29	10
Depreciation and amortization	25	20
Amortization of right-of-use assets	11	10
Employee stock plan compensation	34	29
Unrealized (gain) loss on other investments, net	(225)	2
Bad debt expense	3	10
Shares distributed to customers under IBKR Promotions	4
Change in operating assets and liabilities:
Securities - segregated for regulatory purposes	12,186	(15,626)
Securities borrowed	1,326	(920)
Securities purchased under agreements to resell	(3,374)	1,744
Financial instruments owned, at fair value	(86)	1,020
Receivables from customers	(10,624)	5,616
Other receivables	(2,733)	(633)
Other assets	(17)	(1)
Securities loaned	1,742	1,446
Securities sold under agreements to repurchase		(1,909)
Financial instruments sold but not yet purchased, at fair value	38	(223)
Payable to customers	5,570	12,548
Other payables	57	6
Net cash provided by operating activities	5,058	3,646
Cash flows from investing activities:
Purchases of other investments	(4)	(2)
Distributions received and proceeds from sales of other investments	4	1
Purchase of property, equipment and intangible assets	(38)	(22)
Net cash used in investing activities	(38)	(23)
Cash flows from financing activities:
Short-term borrowings, net	151	123
Dividends paid to stockholders	(18)	(15)
Distributions from IBG LLC to noncontrolling interests	(131)	(182)
Repurchases of common stock for employee tax withholding under stock incentive plans	(27)	(17)
Proceeds from sales of treasury stock	26	18
Issuance of senior notes	1,237
Redemptions of senior notes	(1,081)
Payments made under the Tax Receivable Agreement		(17)
Net cash used in financing activities	157	(90)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(55)	(16)
Net increase in cash, cash equivalents, and restricted cash	5,122	3,517
Cash, cash equivalents, and restricted cash at beginning of period	20,195	12,282
Cash, cash equivalents, and restricted cash at end of period	25,317	15,799
Cash, cash equivalents, and restricted cash
Cash and cash equivalents	3,218	3,115
Cash segregated for regulatory purposes	22,099	12,684
Cash, cash equivalents, and restricted cash	25,317	15,799
Supplemental disclosures of cash flow information:
Cash paid for interest	115	187
Cash paid for taxes, net	43	21
Cash paid for amounts included in lease liabilities	12	10
Non-cash financing activities:
Adjustments to additional paid-in capital for changes in proportionate ownership in IBG LLC	24	21
Adjustments to noncontrolling interests for changes in proportionate ownership in IBG LLC	$ (24)	$ (21)

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Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Total Stockholders' Equity [Member]	Non-controlling Interests [Member]	Total
Balance at Dec. 31, 2019	$ 1	$ 934	$ (3)	$ 520		$ 1,452	$ 6,488	$ 7,940
Balance (in shares) at Dec. 31, 2019	76,889,040
Common Stock distributed pursuant to stock incentive plans (in shares)	311
Compensation for stock grants vesting in the future		3				3	13	16
Dividends paid to stockholders				(8)		(8)		(8)
Distributions from IBG LLC to noncontrolling interests							(53)	(53)
Comprehensive income				46	$ (7)	39	213	252
Balance at Mar. 31, 2020	$ 1	937	(3)	558	(7)	1,486	6,661	8,147
Balance (in shares) at Mar. 31, 2020	76,889,351
Common Stock distributed pursuant to stock incentive plans (in shares)	1,297,716
Compensation for stock grants vesting in the future		2				2	11	13
Repurchase of common stock for employee tax withholding under stock incentive plans			(17)			(17)		(17)
Sales of treasury stock			17			17	1	18
Dividends paid to stockholders				(7)		(7)		(7)
Distributions from IBG LLC to noncontrolling interests							(129)	(129)
Adjustments for changes in proportionate ownership in IBG LLC		21				21	(21)
Comprehensive income				32	4	36	193	229
Balance at Jun. 30, 2020	$ 1	960	(3)	583	(3)	1,538	6,716	8,254
Balance (in shares) at Jun. 30, 2020	78,187,067
Balance at Dec. 31, 2020	$ 1	1,244	(3)	683	26	1,951	7,052	9,003
Balance (in shares) at Dec. 31, 2020	90,909,889
Issuance of common stock - IBKR Promotions			(3)			(3)	3
Issuance of common stock - IBKR Promotions, Share	50,000
Net distribution of common stocks - IBKR Promotion			2			2		2
Compensation for stock grants vesting in the future		4				4	13	17
Dividends paid to stockholders				(9)		(9)		(9)
Distributions from IBG LLC to noncontrolling interests							(86)	(86)
Adjustments for changes in proportionate ownership in IBG LLC		1				1	(1)
Comprehensive income				107	(17)	90	420	510
Balance at Mar. 31, 2021	$ 1	1,249	(4)	781	9	2,036	7,401	9,437
Balance (in shares) at Mar. 31, 2021	90,959,889
Common Stock distributed pursuant to stock incentive plans (in shares)	1,210,929
Issuance of common stock - IBKR Promotions		1	(4)			(3)	3
Issuance of common stock - IBKR Promotions, Share	50,000
Net distribution of common stocks - IBKR Promotion			2			2		2
Compensation for stock grants vesting in the future		4				4	13	17
Repurchase of common stock for employee tax withholding under stock incentive plans			(27)			(27)		(27)
Sales of treasury stock			27			27	(1)	26
Dividends paid to stockholders				(9)		(9)		(9)
Distributions from IBG LLC to noncontrolling interests							(45)	(45)
Adjustments for changes in proportionate ownership in IBG LLC		23				23	(23)
Comprehensive income				92	5	97	430	527
Balance at Jun. 30, 2021	$ 1	$ 1,277	$ (6)	$ 864	$ 14	$ 2,150	$ 7,778	$ 9,928
Balance (in shares) at Jun. 30, 2021	92,220,818

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Organization Of Business	6 Months Ended
	Jun. 30, 2021
Organization Of Business [Abstract]
Organization Of Business	1.  Organization of Business Interactive Brokers Group, Inc. (“IBG, Inc.”) is a Delaware holding company whose primary asset is its ownership of approximately 22.0% of the membership interests of IBG LLC, which, in turn, owns operating subsidiaries (collectively, “IBG LLC”). IBG, Inc. together with IBG LLC and its consolidated subsidiaries (collectively, “the Company”), is an automated global electronic broker specializing in executing and clearing trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds and exchange traded funds (“ETFs”) on more than 135 electronic exchanges and market centers around the world and offering custody, prime brokerage, securities and margin lending services to customers. In the United States of America (“U.S.”), the Company conducts its business primarily from its headquarters in Greenwich, Connecticut and from Chicago, Illinois. Abroad, the Company conducts its business through offices located in Canada, the United Kingdom, Ireland, Luxembourg, Switzerland, Hungary, India, China (Hong Kong and Shanghai), Japan, Singapore, and Australia. As of June 30, 2021, the Company had 2,429 employees worldwide. IBG LLC is a Connecticut limited liability company that conducts its business through its significant operating subsidiaries: Interactive Brokers LLC (“IB LLC”); Interactive Brokers Canada Inc. (“IBC”); Interactive Brokers (U.K.) Limited (“IBUK”); Interactive Brokers Ireland Limited (“IBIE”); Interactive Brokers Luxembourg SARL (“IBLUX”); IBKR Financial Services AG (“IBKRFS”); Interactive Brokers Central Europe Zrt. (“IBCE”); Interactive Brokers (India) Private Limited (“IBI”), Interactive Brokers Hong Kong Limited (“IBHK”), Interactive Brokers Securities Japan, Inc. (“IBSJ”), Interactive Brokers Singapore Private Limited ("IBSG"), and Interactive Brokers Australia Pty Limited (“IBA”). Certain of the operating subsidiaries are members of various securities and commodities exchanges in North America, Europe and the Asia/Pacific region and are subject to regulatory capital and other requirements (see Note 15). IB LLC, IBC, IBUK, IBIE, IBLUX, IBCE, IBI, IBHK, IBSJ, IBSG, and IBA carry securities accounts for customers or perform custodial functions relating to customer securities.

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Significant Accounting Policies

6 Months Ended

Jun. 30, 2021

Significant Accounting Policies [Abstract]

Significant Accounting Policies

2.  Significant Accounting Policies

Basis of Presentation

These condensed consolidated financial statements are presented in U.S. dollars and have been prepared in accordance with accounting principles generally accepted in the U.S. (“U.S. GAAP”) and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding financial reporting with respect to Form 10-Q.

These condensed consolidated financial statements are unaudited and should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s 2020 Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the SEC on March 1, 2021. The condensed consolidated financial information as of December 31, 2020 has been derived from the audited financial statements not included herein.

These condensed consolidated financial statements include the accounts of the Company and its consolidated subsidiaries and reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary for the fair presentation of the results for the periods presented. The operating results for interim periods are not necessarily indicative of the operating results for the entire year.

In March 2020, the World Health Organization recognized the outbreak of the Coronavirus Disease 2019 (“COVID-19”) caused by a novel strain of the coronavirus as a pandemic. The pandemic has affected all countries in which the Company operates. The response of governments and societies to the COVID-19 pandemic, which includes temporary closures of certain businesses; social distancing; travel restrictions, “shelter in place” and other governmental regulations; and reduced consumer spending due to job losses, has significantly impacted volatility in the financial, commodities and energy markets, and general economic conditions.

The effects of the COVID-19 pandemic on the Company’s financial results which may have lasting effects as more investors are brought into the financial markets can be summarized as follows: (1) higher commission revenue due to increased trading activity and a higher rate of customer accounts opened throughout 2020 and into 2021; and (2) generally lower net interest margin resulting from lower benchmark interest rates.

The impact of the COVID-19 pandemic on the Company’s future financial results remains uncertain and currently cannot be quantified, as it will depend on numerous evolving factors that currently cannot be accurately predicted, including, but not limited to the duration and spread of the pandemic; its impact on the Company’s customers, employees and vendors; governmental actions in response to the pandemic; and the overall impact of the pandemic in the economy and society; among other factors. Any of these

events could have significant accounting and financial reporting implications (i.e., reassessing accounting estimates related to credit losses, valuation of certain investments, deferred tax assets and contingency reserves). The Company has reviewed its assumptions related to the above estimates and have not made any adjustments.

Principles of Consolidation, including Noncontrolling Interests

These 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 IBG LLC’s operations. In accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 810, “Consolidation,” the Company consolidates IBG LLC’s financial statements and records the interests in IBG LLC that it does not own as noncontrolling interests.

The Company’s policy is to consolidate all other entities in which it owns more than 50% unless it does not have control. All inter-company balances and transactions have been eliminated.

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 these condensed consolidated financial statements and accompanying notes. These estimates and assumptions are based on judgment and the best available information at the time. Therefore, actual results could differ materially from those estimates. Such estimates include the allowance for credit losses, valuation of certain investments, compensation accruals, current and deferred income taxes, and contingency reserves.

Fair Value

Substantially all of the Company’s assets and liabilities, including financial instruments, are carried at fair value based on published market prices and are marked to market, or are assets and liabilities which are short-term in nature and are carried at amounts that approximate fair value.

The Company applies the fair value hierarchy in accordance with FASB ASC Topic 820, “Fair Value Measurement” (“ASC Topic 820”), 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 for similar assets in an active market, 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.
Level 3	Prices or valuations that require inputs that are both significant to fair value measurement and unobservable.

Financial instruments owned, at fair value and financial instruments sold, but not yet purchased, at fair value are generally classified as Level 1 of the fair value hierarchy. The Company’s 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 active listed stocks, options, warrants, and U.S. and foreign government securities. The Company does not adjust quoted prices for financial instruments classified as Level 1 of the fair value hierarchy, 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 are valued using broadly distributed bank and broker prices, and are classified as Level 2 of the fair value hierarchy since inputs to their valuation can be generally corroborated by market data. Precious metals are valued using an internal model, which incorporates the exchange-traded futures price of the underlying instruments, benchmark interest rates and estimated storage costs, and are classified as Level 2 of the fair value hierarchy since the significant inputs to their valuation are observable. Other securities that are not traded in active markets are also classified as Level 2 of the fair value hierarchy. Level 3 financial instruments are comprised of securities that have been delisted or otherwise are no longer tradable in active markets and have been valued by the Company based on internal estimates.

‎

Earnings per Share

Earnings per share (“EPS”) is computed in accordance with FASB ASC Topic 260, “Earnings per Share.” Basic EPS is computed by dividing the net income available for common stockholders by the weighted average number of shares outstanding for that period. Diluted EPS is calculated by dividing the net income available for common stockholders by the diluted weighted average shares outstanding for that period. Diluted EPS includes the determinants of basic EPS and, in addition, reflects the dilutive effect of shares of common stock estimated to be distributed in the future under the Company’s stock-based compensation plans, with no adjustments to net income available for common stockholders for potentially dilutive common shares.

Current Expected Credit Losses

The Company follows FASB ASC Topic 326 – “Financial Instruments – Credit Losses” (“ASC Topic 326”) which applies to financial assets measured at amortized cost, held-to-maturity debt securities and off-balance sheet credit exposures. For on-balance sheet assets, an allowance must be recognized at the origination or purchase of in-scope assets and represents the expected credit losses over the contractual life of those assets. Expected credit losses on off-balance sheet credit exposures must be estimated over the contractual period the Company is exposed to credit risk as a result of a present obligation to extend credit. The impact to the current period is not material since the Company’s in-scope assets are primarily subject to collateral maintenance provisions for which the Company elected to apply the practical expedient of reporting the difference between the fair value of collateral and the amortized cost for the in-scope assets as the allowance for current expected credit losses.

Cash and Cash Equivalents

Cash and cash equivalents consist of deposits with banks and all highly liquid investments, with maturities of three months or less, that are not segregated and deposited for regulatory purposes or to meet margin requirements at clearing houses and clearing banks.

Cash and Securities – Segregated for Regulatory Purposes

As a result of customer activities, certain operating subsidiaries are obligated by rules mandated by their primary regulators to segregate or set aside cash or qualified securities to satisfy such regulations, which have been promulgated to protect customer assets. Restricted cash represents cash and cash equivalents that are subject to withdrawal or usage restrictions. Cash segregated for regulatory purposes meets the definition of restricted cash and is included in “cash, cash equivalents, and restricted cash” in the condensed consolidated statements of cash flows.

The table below presents the composition of the Company’s securities segregated for regulatory purposes for the periods indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
U.S. government securities	$	3,925	$	4,750
Securities purchased under agreements to resell 1		11,710		23,071
	$	15,635	$	27,821

________________________

(1)These balances are collateralized by U.S. government securities.

Securities Borrowed and Securities Loaned

Securities borrowed and securities loaned are recorded at the amount of the cash collateral advanced or received. Securities borrowed transactions require the Company to provide counterparties with collateral, which may be in the form of cash, letters of credit or other securities. With respect to securities loaned, the Company 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. The Company monitors the market value of securities borrowed and loaned on a daily basis, with additional collateral obtained or refunded as permitted contractually. The Company’s policy is to net, in the condensed consolidated statements of financial condition, securities borrowed and securities loaned entered into with the same counterparty that meet the offsetting requirements prescribed in FASB ASC Topic 210-20, “Balance Sheet – Offsetting” (“ASC Topic 210-20”).

Securities lending fees received and paid by the Company are included in interest income and interest expense, respectively, in the condensed consolidated statements of comprehensive income.

Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase

Securities purchased under agreements to resell and securities sold under agreements to repurchase, which are reported as collateralized financing transactions, are recorded at contract value, which approximates fair value. To ensure that the fair value of the underlying collateral remains sufficient, the collateral is valued daily with additional collateral obtained or excess collateral returned, as permitted under contractual provisions. The Company’s policy is to net, in the condensed consolidated statements of financial condition, securities purchased under agreements to resell transactions and securities sold under agreements to repurchase transactions entered into with the same counterparty that meet the offsetting requirements prescribed in ASC Topic 210-20.

Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased, at Fair Value

Financial instrument transactions are accounted for on a trade date basis. Financial instruments owned and financial instruments sold, but not yet purchased are stated at fair value based upon quoted market prices, or if not available, are valued by the Company based on internal estimates (see Fair Value above). The Company’s financial instruments pledged to counterparties where the counterparty has the right, by contract or custom, to sell or repledge the financial instruments are reported as financial instruments owned and pledged as collateral in the condensed consolidated statements of financial condition.

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 condensed consolidated statements of financial condition. Amounts receivable from customers that are determined by management to be uncollectible are recorded as customer bad debt expense in the condensed consolidated statements of comprehensive income.

Receivables from and Payables to Brokers, Dealers and Clearing Organizations

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

Investments

The Company makes certain strategic investments related to its business which are included in other assets in the condensed consolidated statements of financial condition. The Company accounts for these investments as follows:

Under the equity method of accounting as required under FASB ASC Topic 323, “Investments – Equity Method and Joint Ventures.” These investments, including where the investee is a limited partnership or limited liability company, are recorded at the fair value amount of the Company’s initial investment and are adjusted each period for the Company’s share of the investee’s income or loss. Contributions paid to and distributions received from equity method investees are recorded as additions or reductions, respectively, to the respective investment balance.

At fair value if the investment in equity securities has a readily determinable fair value.

At adjusted cost if the investment does not have a readily determinable fair value. Adjusted cost represents the historical cost, less impairment, if any. If the Company identifies observable price changes in orderly transactions for the identical or a similar investment of the same issuer, the Company measures the equity security at fair value as of the date that the observable transaction occurred in accordance with FASB ASC Topic 321, “Investments in Equity Securities.”

A judgmental aspect of accounting for investments is evaluating whether a decline in the value of an investment has occurred. The evaluation of an 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. Most of the Company’s equity investments do not have readily determinable market values. All investments are reviewed for changes in circumstances or occurrence of events that suggest the Company’s investment may not be recoverable. An impairment loss, if any, is recognized in the period the determination is made.

The table below presents the composition of the Company’s investments for the periods indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
Equity method investments1	$	14	$	11
Investments in equity securities at adjusted cost2		13		10
Investments in equity securities at fair value2		291		80
Investments in exchange memberships and equity securities of certain exchanges2		3		3
	$	321	$	104

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(1)The Company’s share of income or losses is included in other income in the condensed consolidated statements of comprehensive income.

(2)These investments do not qualify for equity method of accounting and the dividends received are included in other income in the condensed consolidated statements of comprehensive income.

Property, Equipment, and Intangible Assets

Property, equipment, and intangible assets, which are included in other assets in the condensed consolidated statements of financial condition, consist of leasehold improvements, computer equipment, software developed for the Company’s internal use, 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. Intangible assets with a finite life are amortized on a straight-line basis over their estimated useful lives of three years, and tested for recoverability whenever events indicate that the carrying amounts may not be recoverable. Qualifying costs for internally developed software are capitalized and amortized over the expected useful life of the developed software, not to exceed three years. Upon retirement or disposition of property and equipment, the cost and related accumulated depreciation are removed from the condensed consolidated statements of financial condition and any resulting gain or loss is recorded in other income in the condensed consolidated statements of comprehensive income. Fully depreciated (or amortized) assets are retired periodically throughout the year.

Leases

The Company reviews all relevant contracts to determine if the contract contains a lease at its inception date. A contract contains a lease if the contract conveys to the company the right to control the use of an underlying asset for a period of time in exchange for consideration. If the Company determines that a contract contains a lease, it recognizes, in the condensed consolidated statements of financial condition, a lease liability and a corresponding right-of-use asset on the commencement date of the lease. The lease liability is initially measured at the present value of the future lease payments over the lease term using the rate implicit in the lease or, if not readily determinable, the Company’s secured incremental borrowing rate. An operating lease right-of-use asset is initially measured at the value of the lease liability minus any lease incentives and initial direct costs incurred plus any prepaid rent.

The Company’s leases are classified as operating leases and consist of real estate leases for office space, data centers and other facilities. Each lease liability is measured using the Company’s secured incremental borrowing rate, which is based on an internally developed yield curve using interest rates of third parties’ corporate debt issued with a similar risk profile as the Company and a duration similar to the lease term. The Company’s leases have remaining terms of one to twelve years, some of which include options to extend the lease term, and some of which include options to terminate the lease upon notice. The Company considers these options when determining the lease term used to calculate the right-of-use asset and the lease liability when the Company is reasonably certain it will exercise such option.

The Company’s operating leases contain both lease components and non-lease components. Non-lease components are distinct elements of a contract that are not related to securing the use of the underlying assets, such as common area maintenance and other management

costs. The Company elected to measure the lease liability by combining the lease and non-lease components as a single lease component. As such, the Company includes the fixed payments and any payments that depend on a rate or index that relate to the lease and non-lease components in the measurement of the lease liability. Some of the non-lease components are variable in nature and not based on an index or rate, and as a result, are not included in the measurement of the right-of-use asset or lease liability.

Operating lease expense is recognized on a straight-line basis over the lease term and is included in occupancy, depreciation and amortization, expense in the Company’s condensed consolidated statements of comprehensive income.

Comprehensive Income and Foreign Currency Translation

The Company’s operating results are reported in the condensed consolidated statements of comprehensive income pursuant to FASB ASC Topic 220, “Comprehensive Income.”

Comprehensive income consists of two components: net income and other comprehensive income (“OCI”). The Company’s OCI is comprised of gains and losses resulting from translating foreign currency financial statements of non-U.S. subsidiaries, net of related income taxes, where applicable. In general, the practice and intention of the Company is to reinvest the earnings of its non-U.S. subsidiaries in those operations, therefore tax is usually not accrued on OCI.

The Company’s non-U.S. domiciled subsidiaries have a functional currency 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. Adjustments that result from translating amounts from a subsidiary’s functional currency to the U.S. dollar (as described above) are reported net of tax, where applicable, in accumulated OCI in the condensed consolidated statements of financial condition.

Revenue Recognition

Commissions

Commissions earned for executing and/or clearing transactions are accrued on a trade date basis and are reported as commissions in the condensed consolidated statements of comprehensive income. Commissions also include payments for order flow income received from IBKR Lite^SM liquidity providers. The Company’s IBKR Lite^SM offering provides commission-free trades on U.S. exchange-listed stocks and ETFs and generates no commission revenues from customers on these trades. See Note 8 for further information on revenue from contracts with customers.

Other Fees and Services

The Company earns fee income on services provided to customers, which includes market data fees, risk exposure fees, payments for order flow from exchange-mandated programs, minimum activity fees, and other fees and services charged to customers. Fee income is recognized either daily or monthly. See Note 8 for further information on revenue from contracts with customers.

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, which are recorded on an accrual basis and are included in interest income and interest expense, respectively, in the condensed consolidated statements of comprehensive income.

Principal Transactions

Principal transactions include gains and losses as a result of changes in the fair value of financial instruments owned, at fair value, financial instruments sold, but not yet purchased, at fair value, and other investments measured at fair value (i.e., unrealized gains and losses) and realized gains and losses related to the Company’s principal transactions. Included are net gains and losses on stocks, options, U.S. and foreign government securities, futures, foreign exchange, precious metals, and other derivative instruments. Dividends are integral to the valuation of stocks. Accordingly, dividends income and expense attributable to financial instruments owned, at fair value and financial instruments sold, but not yet purchased, at fair value, are reported on a net basis in other income in the condensed consolidated statements of comprehensive income.

‎

Foreign Currency Gains and Losses

Foreign currency balances are assets and liabilities in currencies other than the Company’s functional currency. At every reporting date, the Company revalues its foreign currency balances to its functional currency at the spot exchange rate and records the associated foreign currency gains and losses. These foreign currency gains and losses are reported in the condensed consolidated statements of comprehensive income, as follows: (a) foreign currency gains and losses related to the Company’s currency diversification strategy are reported in other income; (b) foreign currency gains and losses arising from currency swap transactions are reported in interest income or interest expense; and (c) all other foreign currency gains and losses are reported in other income.

Rebates

Rebates consist of volume discounts, credits or payments received from exchanges or other market centers related to the placement and/or removal of liquidity from the marketplace and are recorded on an accrual basis. Rebates are recorded net within execution, clearing and distribution fees in the condensed consolidated statements of comprehensive income. Rebates received for trades executed on behalf of customers that elect tiered pricing are passed, in whole or part, to these customers; and such pass-through amounts are recorded net within commissions in the condensed consolidated statements of comprehensive income.

Stock-Based Compensation

The Company follows FASB ASC Topic 718, “Compensation - Stock Compensation” (“ASC Topic 718”), to account for its stock-based compensation plans. ASC Topic 718 requires all share-based payments to employees to be recognized in the consolidated financial statements using a fair value-based method. Grants, which are denominated in U.S. dollars, are communicated to employees in the year of grant, thereby establishing the fair value of each grant. The fair value of awards granted to employees are generally expensed as follows: 50% in the year of grant in recognition of the plans’ post-employment provisions (as described below) and the remaining 50% over the related vesting period utilizing the “graded vesting” method permitted under ASC Topic 718. In the case of “retirement eligible” employees (those employees older than 59), 100% of awards are expensed when granted.

Awards granted under stock-based compensation plans are subject to the plans’ post-employment provisions 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 be eligible to earn 50% of previously granted but not yet earned awards, unless the employee is over the age of 59, in which case the employee would be eligible to receive 100% of previously granted but not yet earned awards.

Income Taxes

The Company accounts for income taxes in accordance with FASB ASC Topic 740, “Income Taxes” (“ASC Topic 740”). The Company’s income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits are based on enacted tax laws (see Note 11) and reflect management’s best assessment of estimated future taxes to be paid. The Company is subject to income taxes in the U.S. and numerous foreign jurisdictions. Determining income tax expense requires significant judgment and estimates.

Deferred income tax assets and liabilities arise from temporary differences between the tax and financial statement recognition of underlying assets and liabilities. In evaluating the ability to recover deferred tax assets within the jurisdictions from which they arise, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. In projecting future taxable income, historical results are adjusted for changes in accounting policies and incorporate assumptions including the amount of future state, federal and foreign pre-tax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax-planning strategies. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates the Company is using to manage the underlying businesses. In evaluating the objective evidence that historical results provide, three years of cumulative operating income (loss) are considered. Deferred income taxes have not been provided for U.S. tax liabilities or for additional foreign taxes on the unremitted earnings of foreign subsidiaries that have been indefinitely reinvested.

The calculation of the Company’s tax liabilities involves dealing with uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across the Company’s global operations. Changes in tax laws and rates could also affect recorded deferred tax assets and liabilities in the future.

The Company records tax liabilities in accordance with ASC Topic 740 and adjusts these liabilities when management’s judgment changes as a result of the evaluation of new information not previously available. Because of the complexity of some of these uncertainties, the ultimate resolution may result in payments that are different from the current estimates of these tax liabilities. These

differences will be reflected as increases or decreases to income tax expense in the period in which new information becomes available.

The Company recognizes a tax benefit from an uncertain tax position only when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of the technical merits. A tax position that meets this standard is measured at the largest amount of benefit that will more likely than not be realized on settlement.

The Company recognizes interest related to income tax matters as interest income or interest expense and penalties related to income tax matters as income tax expense in the condensed consolidated statements of comprehensive income.

FASB Standards Adopted During 2021

Standard	Summary of guidance	Effect on financial statements
Income Taxes (Topic 740) ‎ ‎Issued December 2019	• Simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740.	• Adopted January 1, 2021. • The adoption of the changes did not have a material impact on the Company’s consolidated financial statements.

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Trading Activities And Related Risks

6 Months Ended

Jun. 30, 2021

Trading Activities And Related Risks [Abstract]

Trading Activities And Related Risks

3.  Trading Activities and Related Risks

Trading activities expose the Company 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 the Company’s risk-taking is consistent with its business strategy, its capital structure, and current and anticipated market conditions.

Market Risk

The Company 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. The Company 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. The Company uses a combination of cash instruments and exchange traded derivatives to hedge its market exposures. The Company does not apply hedge accounting. 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. The Company is subject to equity price risk primarily in financial instruments owned, at fair value and financial instruments sold, but not yet purchased, at fair value. The Company 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.

Interest Rate Risk

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

Currency Risk

Currency risk arises from the possibility that fluctuations in foreign exchange rates will impact the value of financial instruments. The Company manages this risk using spot (i.e., cash) currency transactions, currency futures contracts and currency forward contracts. The Company actively manages its currency exposure using a currency diversification strategy that is based on a defined basket of currencies internally referred to as the “GLOBAL.” These strategies minimize the fluctuation of the Company’s net worth as expressed in GLOBALs, thereby diversifying its risk in alignment with these global currencies, weighted by the Company’s view of their importance. As the Company’s financial results are reported in U.S. dollars, the change in the value of the GLOBAL as expressed in U.S. dollars affects the Company’s earnings. The impact of this currency diversification strategy in the Company’s earnings is included in other income in the condensed consolidated statements of comprehensive income.

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Credit Risk

The Company is exposed to risk of loss if a customer, counterparty or issuer fails to perform its obligations under contractual terms (“default risk”). Both cash instruments and derivatives expose the Company to default risk. The Company 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 as contracts entered into are settled directly at securities and commodities clearing houses or are settled through member firms and banks with substantial financial and operational resources. Over-the-counter transactions, such as securities lending and contracts for differences (“CFDs”), are marked to market daily and are conducted with counterparties that have undergone a thorough credit review. The Company seeks to control the risks associated with its customer margin activities by requiring customers to maintain collateral in compliance with regulatory and internal guidelines.

In the normal course of business, the Company executes, settles, and finances various customer securities transactions. Execution of these transactions includes the purchase and sale of securities which exposes the Company to default risk arising from the potential that customers or counterparties may fail to satisfy their obligations. In these situations, the Company 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, the Company may purchase the underlying security in the market and seek reimbursement for any losses from the counterparty.

For cash management purposes, the Company 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. Repos are collateralized by securities with a market value in excess of the obligation under the contract. Similarly, securities lending agreements are collateralized by deposits of cash or securities. The Company 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 the Company as permitted under contractual provisions.

Concentrations of Credit Risk

The Company’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, 2021, the Company did not have any material concentrations of credit risk outside the ordinary course of business.

Off-Balance Sheet Risks

The Company may be exposed to a risk of loss not reflected in the condensed consolidated financial statements to settle futures and certain over-the-counter contracts at contracted prices, which may require repurchase or sale of the underlying products in the market at prevailing prices. Accordingly, these transactions result in off-balance sheet risk as the Company’s cost to liquidate such contracts may exceed the amounts reported in the Company’s condensed consolidated statements of financial condition.

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Equity And Earnings Per Share

6 Months Ended

Jun. 30, 2021

Equity And Earnings Per Share [Abstract]

Equity And Earnings Per Share

4.  Equity and Earnings per Share

In connection with IBG, Inc.’s initial public offering of Class A common stock (“IPO”) in May 2007, it purchased 10.0% of the membership interests in IBG LLC from IBG Holdings LLC (“Holdings”), became the sole managing member of IBG LLC and began to consolidate IBG LLC’s financial results into its financial statements. Holdings owns all of IBG, Inc.’s Class B common stock, which has voting rights in proportion to its ownership interests in IBG LLC. The table below presents the amount of IBG LLC membership interests held by IBG, Inc. and Holdings as of June 30, 2021.

	IBG, Inc.	Holdings	Total
Ownership %	22.0%	78.0%	100.0%
Membership interests	92,091,373	325,960,034	418,051,407

These condensed consolidated financial statements reflect the results of operations and financial position of IBG, Inc., including consolidation of its investment in IBG LLC and its subsidiaries. The noncontrolling interests in IBG LLC attributable to Holdings are reported as a component of total equity in the condensed consolidated statements of financial condition.

Recapitalization and Post-IPO Capital Structure

Immediately prior to and immediately following the consummation of the IPO, IBG, Inc., Holdings, 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., Holdings 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 Holdings 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, Holdings used the net proceeds to redeem 10.0% of members’ interests in Holdings in proportion to their interests. Immediately following the Recapitalization and IPO, Holdings owned approximately 90% of IBG LLC and 100% of IBG, Inc.’s Class B common stock.

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 of June 30, 2021 and December 31, 2020, 1,000,000,000 shares of Class A common stock were authorized, of which 92,220,818 and 90,909,889 shares have been issued; and 92,045,760 and 90,773,105 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, 2021 and December 31, 2020, respectively. In addition, 10,000 shares of preferred stock have been authorized, of which no shares are issued or outstanding as of June 30, 2021 and December 31, 2020, 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. Deferred tax assets were recorded as of the IPO date and in connection with subsequent redemptions of Holdings member interests in exchange for common stock. These deferred tax assets are included in other assets in the Company’s condensed consolidated statements of financial condition and are being amortized as additional deferred income tax expense over 15 years from the IPO date and from the additional redemption dates, respectively, as allowable under current tax law. As of June 30, 2021 and December 31, 2020, the unamortized balance of these deferred tax assets was $175 million and $190 million, respectively.

IBG, Inc. also entered into an agreement (the “Tax Receivable Agreement”) with Holdings to pay Holdings (for the benefit of the former members of IBG LLC) 85% of the tax savings that IBG, Inc. actually realizes as the result of tax basis increases. These payables to Holdings are reported as payable to affiliate in the Company’s condensed consolidated statements of financial condition. The remaining 15% is accounted for as a permanent increase to additional paid-in capital in the Company’s condensed consolidated statements of financial condition.

The cumulative amounts of deferred tax assets, payables to Holdings and additional paid-in capital arising from stock offerings from the date of the IPO through June 30, 2021 were $585 million, $497 million, and $88 million, respectively. Amounts payable under the Tax Receivable Agreement are payable to Holdings annually following the filing of IBG, Inc.’s federal income tax return. The Company has paid Holdings a cumulative total of $205 million through June 30, 2021 pursuant to the terms of the Tax Receivable Agreement.

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

At the time of IBG, Inc.’s IPO in 2007, three hundred sixty (360) million shares of authorized common stock were reserved for future sales and redemptions. From 2008 through 2010, Holdings redeemed 5,013,259 IBG LLC interests with a total value of $114 million, which redemptions were funded using cash on hand at IBG LLC. Upon cash redemption these IBG LLC interests were retired. From 2011 through 2020, IBG, Inc. issued 28,127,765 shares of common stock (with a fair value of $1.1 billion) directly to Holdings in exchange for an equivalent number of member interests in IBG LLC.

As a consequence of these redemption transactions, and distribution of shares to employees (see Note 10), IBG, Inc.’s interest in IBG LLC has increased to approximately 22.0%, with Holdings owning the remaining 78.0% as of June 30, 2021. The redemptions also resulted in an increase in the Holdings interest held by Mr. Thomas Peterffy and his affiliates from approximately 84.6% at the IPO to approximately 89.6% as of June 30, 2021.

On July 27, 2020, the Company filed a Prospectus Supplement on Form 424B (File Number 333-240121) with the SEC to register up to 990,000 shares of common stock, offering the opportunity for eligible persons to receive awards in the form of an offer to receive such shares by participating in one or more promotions that are designed to attract new customers to the Company’s brokerage platform, increase assets held with the Company’s brokerage business and enhance customer loyalty. During the six months ended June 30, 2021, the Company issued 100,000 shares to IBG LLC for distribution to eligible customers of certain of its subsidiaries.

On July 30, 2021, the Company filed a Prospectus Supplement on Form 424B5 with the SEC to issue 6,079,542 shares of common stock (with a fair value of $376 million) in exchange for an equivalent number of shares of member interests in IBG LLC. This issuance of shares increased the Company’s ownership in IBG LLC from 22.0% to 23.5%. This redemption also resulted in an increase in the Holdings interest held by Mr. Thomas Peterffy and his affiliates to approximately 90.6% as of July 30, 2021.

Earnings per Share

Basic earnings per share is 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 June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Basic earnings per share
Net income available for common stockholders	$	92	$	32	$	199	$	78
Weighted average shares of common stock outstanding
Class A		91,365,134		77,357,509		91,078,768		77,054,288
Class B		100		100		100		100
		91,365,234		77,357,609		91,078,868		77,054,388
Basic earnings per share	$	1.01	$	0.41	$	2.19	$	1.01

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 potentially dilutive common shares.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Diluted earnings per share
Net income available for common stockholders	$	92	$	32	$	199	$	78
Weighted average shares of common stock outstanding
Class A
Issued and outstanding		91,365,134		77,357,509		91,078,768		77,054,288
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans		833,935		673,853		905,378		745,575
Class B		100		100		100		100
		92,199,169		78,031,462		91,984,246		77,799,963
Diluted earnings per share	$	1.00	$	0.40	$	2.17	$	1.00

Member Distributions and Stockholder Dividends

During the six months ended June 30, 2021, IBG LLC made distributions totaling $167 million, to its members, of which IBG, Inc.’s proportionate share was $36 million. In March and June 2021, the Company paid quarterly cash dividends of $0.10 per share of common stock, totaling $9 million and $9 million respectively.

On July 20, 2021, the Company declared a cash dividend of $0.10 per common share, payable on September 14, 2021 to stockholders of record as of September 1, 2021.
‎

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Comprehensive Income

6 Months Ended

Jun. 30, 2021

Comprehensive Income Detail [Abstract]

Comprehensive Income

5.  Comprehensive Income

The table below presents comprehensive income and earnings per share on comprehensive income for the periods indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Comprehensive income available for common stockholders	$	97	$	36	$	187	$	75
Earnings per share on comprehensive income
Basic	$	1.06	$	0.46	$	2.06	$	0.97
Diluted	$	1.05	$	0.46	$	2.04	$	0.96
Weighted average common shares outstanding
Basic		91,365,234		77,357,609		91,078,868		77,054,388
Diluted		92,199,169		78,031,462		91,984,246		77,799,963

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Financial Assets And Financial Liabilities

6 Months Ended

Jun. 30, 2021

Financial Assets And Financial Liabilities [Abstract]

Financial Assets And Financial Liabilities

6.  Financial Assets and Financial Liabilities

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

The tables below present, by level within the fair value hierarchy (see Note 2), financial assets and liabilities, measured at fair value on a recurring basis for the periods indicated. As required by ASC Topic 820, financial assets and financial liabilities are classified in their entirety based on the lowest level of input that is significant to the respective fair value measurement.

	Financial Assets at Fair Value as of June 30, 2021
	Level 1		Level 2		Level 3		Total
	(in millions)
Securities segregated for regulatory purposes	$	3,925	$	—	$	—	$	3,925
Financial instruments owned, at fair value
Stocks		647		—		—		647
Options		22		—		—		22
U.S. and foreign government securities		44		—		—		44
Corporate bonds		—		—		1		1
Precious metals		—		11		—		11
Currency forward contracts		—		1		—		1
Total financial instruments owned, at fair value		713		12		1		726
Other assets - other investments at fair value		291		—		—		291
Total financial assets at fair value	$	4,929	$	12	$	1	$	4,942

	Financial Liabilities at Fair Value as of June 30, 2021
	Level 1		Level 2		Level 3		Total
	(in millions)
Financial instruments sold, but not yet purchased, at fair value
Stocks	$	147	$	—	$	—	$	147
Options		25		—		—		25
Precious metals		—		3		—		3
Currency forward contracts		—		16		—		16
Total financial instruments sold, but not yet purchased, at fair value		172		19		—		191
Total financial liabilities at fair value	$	172	$	19	$	—	$	191

	Financial Assets at Fair Value as of December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in millions)
Securities segregated for regulatory purposes	$	4,750	$	—	$	—	$	4,750
Financial instruments owned, at fair value
Stocks		558		—		1		559
Options		28		—		—		28
U.S. and foreign government securities		33		—		—		33
Corporate bonds		—		—		1		1
Currency forward contracts		—		9		—		9
Total financial instruments owned, at fair value		619		9		2		630
Other assets - other investments at fair value		80		—		—		80
Total financial assets at fair value	$	5,449	$	9	$	2	$	5,460

‎

	Financial Liabilities at Fair Value as of December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in millions)
Financial instruments sold, but not yet purchased, at fair value
Stocks	$	120	$	—	$	—	$	120
Options		26		—		—		26
Currency forward contracts		—		7		—		7
Total financial instruments sold, but not yet purchased, at fair value		146		7		—		153
Total financial liabilities at fair value	$	146	$	7	$	—	$	153

Level 3 Financial Assets and Financial Liabilities

The Company’s Level 3 financial assets are comprised of delisted and illiquid securities reported within financial instruments owned, at fair value in the condensed consolidated statements of financial condition. As of June 30, 2021, Level 3 financial assets included $1 million in corporate bonds which were not traded in active markets and were valued by the Company based on internal estimates.

Financial Assets and Liabilities Not Measured at Fair Value

The tables below represent the carrying value, fair value, and fair value hierarchy category of certain financial assets and liabilities that are not recorded at fair value in the Company's condensed consolidated statements of financial condition for the periods indicated. The tables below exclude certain financial instruments such as equity investments and all non-financial assets and liabilities.

	June 30, 2021
	Carrying ‎Value		Fair ‎Value		Level 1		Level 2		Level 3
	(in millions)
Financial assets, not measured at fair value
Cash and cash equivalents	$	3,218	$	3,218	$	3,218	$	—	$	—
Cash - segregated for regulatory purposes		22,099		22,099		22,099		—		—
Securities - segregated for regulatory purposes		11,710		11,710		—		11,710		—
Securities borrowed		3,630		3,630		—		3,630		—
Securities purchased under agreements to resell		4,166		4,166		—		4,166		—
Receivables from customers		49,954		49,954		—		49,954		—
Receivables from brokers, dealers, and clearing organizations		3,983		3,983		—		3,983		—
Interest receivable		108		108		—		108		—
Other assets		15		16		—		2		14
Total financial assets, not measured at fair value	$	98,883	$	98,884	$	25,317	$	73,553	$	14

Financial liabilities, not measured at fair value
Short-term borrowings	$	425	$	425	$	—	$	425	$	—
Securities loaned		11,580		11,580		—		11,580		—
Payables to customers		81,452		81,452		—		81,452		—
Payables to brokers, dealers and clearing organizations		207		207		—		207		—
Interest payable		9		9		—		9		—
Total financial liabilities, not measured at fair value	$	93,673	$	93,673	$	—	$	93,673	$	—

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	December 31, 2020
	Carrying ‎Value		Fair ‎Value		Level 1		Level 2		Level 3
	(in millions)
Financial assets, not measured at fair value
Cash and cash equivalents	$	4,292	$	4,292	$	4,292	$	—	$	—
Cash - segregated for regulatory purposes		15,903		15,903		15,903		—		—
Securities - segregated for regulatory purposes		23,071		23,071		—		23,071		—
Securities borrowed		4,956		4,956		—		4,956		—
Securities purchased under agreements to resell		792		792		—		792		—
Receivables from customers		39,333		39,333		—		39,333		—
Receivables from brokers, dealers, and clearing organizations		1,254		1,254		—		1,254		—
Interest receivable		104		104		—		104		—
Other assets		13		13		—		2		11
Total financial assets, not measured at fair value	$	89,718	$	89,718	$	20,195	$	69,512	$	11

Financial liabilities, not measured at fair value
Short-term borrowings	$	118	$	118	$	—	$	118	$	—
Securities loaned		9,838		9,838		—		9,838		—
Payables to customers		75,882		75,882		—		75,882		—
Payables to brokers, dealers and clearing organizations		182		182		—		182		—
Interest payable		6		6		—		6		—
Total financial liabilities, not measured at fair value	$	86,026	$	86,026	$	—	$	86,026	$	—

Netting of Financial Assets and Financial Liabilities

The Company’s policy is to net securities borrowed and securities loaned, and securities purchased under agreements to resell and securities sold under agreements to repurchase that meet the offsetting requirements prescribed in ASC Topic 210-20. In the tables below, the amounts of financial instruments that are not offset in the condensed consolidated statements of financial condition, but could be netted against cash or financial instruments with specific counterparties under master netting agreements, according to the terms of the agreements, including clearing houses (exchange traded options, warrants and discount certificates) or over the counter currency forward contract counterparties, are presented to provide financial statement readers with the Company’s net payable or receivable with counterparties for these financial instruments.

‎

The tables below present the netting of financial assets and of financial liabilities for the periods indicated.

	June 30, 2021
	Gross			Amounts			Net Amounts		Amounts Not Offset
	Amounts			Offset in the			Presented in		in the Condensed
	of Financial			Condensed			the Condensed		Consolidated Statements
	Assets and			Consolidated			Consolidated		of Financial Condition
	Liabilities			Statements of			Statements of		Cash or Financial
	Recognized			Financial Condition		2	Financial Condition		Instruments		Net Amount
	(in millions)
Offsetting of financial assets
Securities segregated for regulatory purposes - purchased under agreements to resell	$	11,710	1	$	—		$	11,710	$	(11,710)	$	—
Securities borrowed		3,630			—			3,630		(3,522)		108
Securities purchased under agreements to resell		4,166			—			4,166		(4,166)		—
Financial instruments owned, at fair value
Options		22			—			22		(21)		1
Currency forward contracts		1			—			1		—		1
Total	$	19,529		$	—		$	19,529	$	(19,419)	$	110

	(in millions)
Offsetting of financial liabilities
Securities loaned	$	11,580	$	—	$	11,580	$	(11,029)	$	551
Financial instruments sold, but not yet purchased, at fair value
Options		25		—		25		(21)		4
Currency forward contracts		16		—		16		—		16
Total	$	11,621	$	—	$	11,621	$	(11,050)	$	571

‎

	December 31, 2020
		Gross		Amounts			Net Amounts		Amounts Not Offset
		Amounts		Offset in the			Presented in		in the Condensed
		of Financial		Condensed			the Condensed		Consolidated Statements
		Assets and		Consolidated			Consolidated		of Financial Condition
		Liabilities		Statements of			Statements of		Cash or Financial
		Recognized		Financial Condition		2	Financial Condition		Instruments		Net Amount
	(in millions)
Offsetting of financial assets
Securities segregated for regulatory purposes - purchased under agreements to resell	$	23,071	1	$	—		$	23,071	$	(23,071)	$	—
Securities borrowed		4,956			—			4,956		(4,716)		240
Securities purchased under agreements to resell		792			—			792		(792)		—
Financial instruments owned, at fair value
Options		28			—			28		(25)		3
Currency forward contracts		9			—			9		—		9
Total	$	28,856		$	—		$	28,856	$	(28,604)	$	252

	(in millions)
Offsetting of financial liabilities
Securities loaned	$	9,838	$	—	$	9,838	$	(9,246)	$	592
Financial instruments sold, but not yet purchased, at fair value
Options		26		—		26		(25)		1
Currency forward contracts		7		—		7		—		7
Total	$	9,871	$	—	$	9,871	$	(9,271)	$	600

________________________

(1)As of June 30, 2021 and December 31, 2020, the Company had $11.7 billion and $23.1 billion, respectively, of securities purchased under agreements to resell that were segregated to satisfy regulatory requirements. These securities are included in “Securities - segregated for regulatory purposes” in the condensed consolidated statements of financial condition.
‎

(2)The Company did not have any balances eligible for netting in accordance with ASC Topic 210-20 at June 30, 2021 and December 31, 2020.

‎

Secured Financing Transactions – Maturities and Collateral Pledged

The tables below present gross obligations for securities loaned transactions by remaining contractual maturity and class of collateral pledged for the periods indicated.

	June 30, 2021
	Remaining Contractual Maturity
	Overnight		Less than		30 – 90		Over 90
	and Open		30 days		days		days		Total
	(in millions)
Securities loaned
Stocks	$	11,535	$	—	$	—	$	—	$	11,535
Corporate bonds		45		—		—		—		45
Total securities loaned	$	11,580	$	—	$	—	$	—	$	11,580

	December 31, 2020
	Remaining Contractual Maturity
	Overnight		Less than		30 – 90		Over 90
	and Open		30 days		days		days		Total
	(in millions)
Securities loaned
Stocks	$	9,811	$	—	$	—	$	—	$	9,811
Corporate bonds		27		—		—		—		27
Total securities loaned	$	9,838	$	—	$	—	$	—	$	9,838

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Collateralized Transactions

6 Months Ended

Jun. 30, 2021

Disclosure Collateralized Transactions [Abstract]

Collateralized Transactions

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 typical agreements, the Company is permitted to sell or repledge securities received as collateral and use these securities to secure securities purchased under agreements to resell, enter into securities lending transactions or deliver these securities to counterparties to cover short positions.

The Company also engages in securities financing transactions with and for customers through margin lending. 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 the Company’s policy and as enforced by such systems, customers are required to deposit additional collateral or reduce positions, when necessary, to avoid automatic liquidation of their positions.

Margin loans are extended to customers 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 customer account and an overall evaluation of the customer’s 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. As of June 30, 2021 and December 31, 2020, approximately $50.0 billion and $39.3 billion, respectively, of customer margin loans were outstanding.

‎

The table below presents a summary of the amounts related to collateralized transactions for the periods indicated.

	June 30, 2021				December 31, 2020
	Permitted		Sold or		Permitted		Sold or
	to Repledge		Repledged		to Repledge		Repledged
	(in millions)
Securities lending transactions	$	67,033	$	5,998	$	64,436	$	4,859
Securities purchased under agreements to resell transactions 1		15,847		15,642		23,859		23,832
Customer margin assets		60,892		16,510		47,609		14,182
	$	143,772	$	38,150	$	135,904	$	42,873

________________________

(1)As of June 30, 2021, $11.7 billion or 75% (as of December 31, 2020, $23.1 billion or 97%) of securities acquired through agreements to resell that are shown as repledged have been deposited in a separate bank account for the exclusive benefit of customers in accordance with SEC Rule 15c3-3.

In the normal course of business, the Company pledges qualified securities with clearing organizations to satisfy daily margin and clearing fund requirements. As of June 30, 2021 and December 31, 2020, the majority of the Company’s U.S. and foreign government securities owned were pledged to clearing organizations.

The table below presents financial instruments owned and pledged as collateral, including amounts pledged to affiliates, where the counterparty has the right to repledge, for the periods indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
Stocks	$	25	$	53
U.S. and foreign government securities		44		33
	$	69	$	86

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Revenue From Contracts With Customers

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenues From Contracts With Customers

8. Revenues from Contracts with Customers

Revenue from contracts with customers is recognized when, or as, the Company satisfies its performance obligations by transferring the promised services to the customers. A service is transferred to a customer when, or as, the customer obtains control of that service. A performance obligation may be satisfied at a point in time or over time. Revenue from a performance obligation satisfied at a point in time is recognized at the point in time that the Company determines the customer obtains control over the promised service. Revenue from a performance obligation satisfied over time is recognized by measuring the Company’s progress in satisfying the performance obligation in a manner that depicts the transfer of the services to the customer. The amount of revenue recognized reflects the consideration the Company expects to receive in exchange for those promised services (i.e., the “transaction price”). In determining the transaction price, the Company considers multiple factors, including the effects of variable consideration, if any.

The Company’s revenues from contracts with customers are recognized when the performance obligations are satisfied at an amount that reflects the consideration expected to be received in exchange for such services. The majority of the Company’s performance obligations are satisfied at a point in time and are typically collected from customers by debiting their brokerage account with the Company.

‎

Nature of Services

The Company’s main sources of revenues from contracts with customers are as follows:

-Commissions are charged to customers for order execution services and trade clearing and settlement services. These services represent a single performance obligation as the services are not separately identifiable in the context of the contract. The Company recognizes revenue at a point in time at the execution of the order (i.e., trade date). Commissions are generally collected from cleared customers on trade date and from non-cleared customers monthly. Commissions also include payments for order flow received from IBKR Lite^SM liquidity providers.

-Market data fees are charged to customers for market data services to which they subscribe that the Company delivers. The Company recognizes revenue monthly as the performance obligation is satisfied over time by continually providing market data for the period. Market data fees are collected monthly, generally in advance.

-Risk exposure fees are charged to customers who carry positions with market risk that exceeds defined thresholds. The Company recognizes revenue daily as the performance obligation is satisfied at a point in time by the Company taking on additional risk of account liquidation and potential losses due to insufficient margin. Risk exposure fees are collected daily.

-Payments for order flow are earned from various options exchanges based upon options trading volume originated by the Company that meets certain criteria. The Company recognizes revenue daily as the performance obligation is satisfied at a point in time on customer orders that qualify for payments subject to exchange-mandated programs. Payments for order flow are collected monthly, in arrears.

-Minimum activity fees are charged to customers that do not generate the required minimum monthly commission. The Company recognizes revenue monthly as the performance obligation is satisfied at a point in time by servicing customer accounts that do not generate the required minimum monthly commissions. Minimum activity fees are collected monthly, in arrears.

The Company also earns revenues from other services, including order cancelation or modification fees, position transfer fees, telecommunications fees, withdrawal fees, and bank sweep program fees, among others.

‎

Disaggregation of Revenue

The tables below present revenue from contracts with customers by geographic location, and major types of services for the periods indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Geographic location 1
United States	$	216	$	200	$	501	$	397
International		146		116		329		226
	$	362	$	316	$	830	$	623
Major types of services
Commissions	$	307	$	276	$	719	$	545
Market data fees 2		20		15		39		28
Risk exposure fees 2		7		1		12		5
Payments for order flow 2		9		7		19		14
Minimum activity fees 2		9		7		16		13
Other 2		10		10		25		18
	$	362	$	316	$	830	$	623

_____________________________

(1)Based on the location of the subsidiaries in which the revenues are recorded.
‎

(2)Included in other fees and services in the condensed consolidated statements of comprehensive income.

Receivables and Contract Balances

Receivables arise when the Company has an unconditional right to receive payment under a contract with a customer and are derecognized when the cash is received. Receivables of $17 million and $13 million, as of June 30, 2021 and December 31, 2020, respectively, are reported in other assets in the condensed consolidated statements of financial condition.

Contract assets arise when the revenue associated with the contract is recognized prior to the Company’s unconditional right to receive payment under a contract with a customer (i.e., unbilled receivable) and are derecognized when either it becomes a receivable or the cash is received. Contract assets are reported in other assets in the condensed consolidated statements of financial condition. As of June 30, 2021 and December 31, 2020, contract asset balances were not material.

Contract liabilities arise when customers remit contractual cash payments in advance of the Company satisfying its performance obligations under the contract and are derecognized when the revenue associated with the contract is recognized either when a milestone is met triggering the contractual right to bill the customer or when the performance obligation is satisfied. Contract liabilities are reported in accounts payable, accrued expenses and other liabilities in the condensed consolidated statements of financial condition. As of June 30, 2021 and December 31, 2020, contract liability balances were not material.

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Other Income

6 Months Ended

Jun. 30, 2021

Other Income [Abstract]

Other Income

9.  Other Income

The table below presents the components of other income for the periods indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Principal transactions	$	123	$	12	$	243	$	22
Gains (losses) from currency diversification strategy, net		(9)		16		(11)		(33)
Other, net		4		(1)		6		7
	$	118	$	27	$	238	$	(4)

Principal transactions include (1) trading gains and losses from the Company’s remaining market making activities; (2) realized and unrealized gains and losses on financial instruments that (a) are held for purposes other than the Company’s market making activities, (b) are subject to restrictions, or (c) are accounted for under the equity method; and (3) dividends on investments accounted at cost less impairment.

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Employee Incentive Plans

6 Months Ended

Jun. 30, 2021

Employee Incentive Plans [Abstract]

Employee Incentive Plans

10.  Employee Incentive Plans

Defined Contribution Plan

The Company offers substantially all employees of U.S.-based operating subsidiaries who have met minimum service requirements the opportunity to participate in defined contribution retirement plans qualifying under the provisions of Section 401(k) of the Internal Revenue Code. The general purpose of this plan is to provide employees with an incentive to make regular savings in order to provide additional financial security during retirement. This plan provides for the Company to match 50% of the employees’ pre-tax contribution, up to a maximum of 10% of eligible earnings. The employee is vested in the matching contribution incrementally over six years of service. Included in employee compensation and benefits expenses in the condensed consolidated statements of comprehensive income was $3 million and $2 million of plan contributions for the six months ended June 30, 2021 and 2020, respectively.

2007 Stock Incentive Plan

Under the Company’s Stock Incentive Plan, up to 30 million shares of the Company’s Class A common stock may be issued to satisfy vested restricted stock units granted to directors, officers, employees, contractors and consultants of the Company. The purpose of the Stock Incentive Plan is to promote the Company’s long-term financial success by attracting, retaining and rewarding eligible participants.

As a result of the Company’s organizational structure, a description of which can be found in “Business – Our Organizational Structure” in Part I, Item 1 of the Company’s Annual Report on Form 10-K, there is no material dilutive effect upon ownership of common stockholders of issuing shares under the Stock Incentive Plan. The issuances do not dilute the book value of the ownership of common stockholders since the restricted stock units are granted at market value, and upon their vesting and the related issuance of shares of common stock, the ownership of IBG, Inc. in IBG LLC, increases proportionately to the shares issued. As a result of such proportionate increase in share ownership, the dilution upon issuance of common stock is borne by IBG LLC’s majority member (i.e., noncontrolling interest), Holdings, and not by IBG, Inc. or its common stockholders. Additionally, dilution of earnings that may take place after issuance of common stock is reflected in EPS reported in the Company’s financial statements. The EPS dilution can be neither estimated nor projected, but historically it has not been material.

The Stock Incentive Plan is administered by the Compensation Committee of the Company’s Board of Directors. The Compensation Committee has discretionary authority to determine the eligibility to participate in the Stock Incentive Plan and establishes the terms and conditions of the awards, including the number of awards granted to each participant and all other terms and conditions applicable to such awards in individual grant agreements. Awards are expected to be made primarily through grants of restricted stock units. Stock Incentive Plan awards are subject to issuance over time. All previously granted but not yet earned awards may be cancelled by the Company upon the participant’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 not yet earned awards under the Stock Incentive Plan, or provide that any such granted but not yet earned awards will be honored or assumed, or new rights substituted by the new employer on a substantially similar basis and on terms and conditions substantially comparable to those of the Stock Incentive Plan.

The Company expects to continue to grant awards on or about December 31 of each year to eligible participants as part of an overall plan of equity compensation. Restricted stock units vest and become distributable to participants in accordance with the following schedule:

•10% on the first vesting date, which is on or about May 9 of each year; and

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

Awards granted to external directors vest, and are distributed, over a five-year period (20% per year) commencing one year after the date of grant. A total of 29,709 restricted stock units have been granted to the external directors cumulatively since the plan’s inception.

The table below presents Stock Incentive Plan awards granted and the related fair values since the plan’s inception.

			Fair Value at
			Date of Grant
	Units		($ millions)
Prior periods (since inception)	24,497,626		$	561
December 31, 2018	1,146,267			62
December 31, 2019	1,374,217			65
December 31, 2020	1,229,177	1		71
	28,247,287		$	759

______________________________

(1)Stock Incentive Plan number of granted restricted stock units related to 2020 was adjusted by 7,034 additional restricted stock units during the six months ended June 30, 2021.

Estimated future grants under the Stock Incentive Plan are accrued for ratably during each year (see Note 2). In accordance with the vesting schedule, outstanding awards vest and are distributed to participants yearly on or about May 9 of each year. At the end of each year, no vested awards remain undistributed.

Compensation expense related to the Stock Incentive Plan recognized in the condensed consolidated statements of comprehensive income was $34 million and $29 million for the six months ended June 30, 2021 and 2020, respectively. Estimated future compensation costs for unvested awards, net of credits for cancelled awards, as of June 30, 2021 are $32 million.

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The table below summarizes the Stock Incentive Plan activity for the periods indicated.

	Stock
	Incentive Plan
	Units
Balance, December 31, 20201	4,974,355
Granted	—
Cancelled	(23,563)
Distributed	(1,210,929)
Balance, June 30, 2021	3,739,863

_____________________________

(1)Stock Incentive Plan number of granted restricted stock units related to 2020 was adjusted by 7,034 additional restricted stock units during the six months ended June 30, 2021.

Awards previously granted but not yet earned under the stock plans are subject to the plans’ post-employment provisions in the event a participant ceases employment with the Company. Through June 30, 2021, a total of 1,148,603 restricted stock units have been distributed under these post-employment provisions. These distributions are included in the table above.

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Income Taxes

6 Months Ended

Jun. 30, 2021

Income Taxes [Abstract]

Income Taxes

11.  Income Taxes

Income tax expense for the six months ended June 30, 2021 and 2020 differs from the U.S. federal statutory rate primarily due to the taxation treatment of income attributable to noncontrolling interests in IBG LLC. These noncontrolling interests are held directly through a U.S. partnership. Accordingly, the income attributable to these noncontrolling interests is reported in the condensed consolidated statements of comprehensive income, but the related U.S. income tax expense attributable to these noncontrolling interests is not reported by the Company as it is generally the obligation of the noncontrolling interests. Income tax expense is also affected by the differing effective tax rates in foreign, state and local jurisdictions where certain of the Company’s subsidiaries are subject to corporate taxation.

Deferred income taxes arise primarily due to the amortization of the deferred tax assets recognized in connection with the common stock offerings (see Note 4), differences in the valuation of financial assets and liabilities, and for other temporary differences arising from the deductibility of compensation and depreciation expenses in different time periods for accounting and income tax return purposes.

As of and for the six months ended June 30, 2021 and 2020, the Company had no material valuation allowances on deferred tax assets.

The Company is subject to taxation in the U.S. and various states and foreign jurisdictions. As of June 30, 2021, the Company is no longer subject to U.S. Federal and State income tax examinations for tax years prior to 2015, and to non-U.S. income tax examinations for tax years prior to 2011.

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Leases

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Leases

12.  Leases

All of the Company’s leases are classified as operating leases and primarily consist of real estate leases for corporate offices, data centers, and other facilities. As of June 30, 2021, the weighted-average remaining lease term on these leases is approximately 7 years and the weighted-average discount rate used to measure the lease liabilities is approximately 4.13%. For the six months ended June 30, 2021, right-of-use assets obtained under new operating leases were $7 million. The Company’s lease agreements do not contain any residual value guarantees, restrictions or covenants.

The table below presents balances reported in the condensed consolidated statements of financial condition related to the Company’s leases for the period indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
Right-of-use assets1	$	96	$	101
Lease liabilities1	$	116	$	120

__________________________

(1)Right-of-use assets are included in other assets and lease liabilities are included in accounts payable, accrued expenses and other liabilities in the Company’s condensed consolidated statements of financial condition.

The table below presents balances reported in the condensed consolidated statements of comprehensive income related to the Company’s leases for the period indicated.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Operating lease cost	$	7	$	6	$	14	$	12
Variable lease cost		1		1		2		2
Total lease cost	$	8	$	7	$	16	$	14

The table below reconciles the undiscounted cash flows of the Company’s leases to the present value of its operating lease payments for the periods indicated.

	June 30, 2021
	(in millions)
2021 (remaining)	$	12
2022		21
2023		18
2024		15
2025		15
2026		14
Thereafter		41
Total undiscounted operating lease payments		136
Less: imputed interest		(20)
Present value of operating lease liabilities	$	116

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Commitments, Contingencies And Guarantees

6 Months Ended

Jun. 30, 2021

Commitments, Contingencies And Guarantees [Abstract]

Commitments, Contingencies And Guarantees

13.  Commitments, Contingencies and Guarantees

Legal, Regulatory and Governmental Matters

The Company is subject to certain pending and threatened legal, regulatory and governmental actions and proceedings that arise out of the normal course of business. Given the inherent difficulty of predicting the outcome of such matters, particularly in proceedings where claimants seek substantial or indeterminate damages, or which are in their early stages, the Company is generally not able to quantify the actual loss or range of loss related to such legal proceedings, the manner in which they will be resolved, the timing of their final resolution or the ultimate settlement. Management believes that the resolution of these matters will not have a material effect, if any, on the Company’s business or financial condition, but may have a material impact on the results of operations for a given period.

The Company accounts for potential losses related to litigation in accordance with FASB ASC Topic 450, “Contingencies.” As of June 30, 2021 and 2020, accruals for potential losses related to legal, regulatory and governmental actions, and proceedings matters were not material.

Trading Technologies Matter

On February 3, 2010, Trading Technologies International, Inc. (“Trading Technologies”) filed a complaint in the U.S. District Court for the Northern District of Illinois, Eastern Division, against IBG LLC and IB LLC (“Defendants”). The 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 Defendants filed an answer to Trading Technologies’ amended complaint, as well as related counterclaims. The Defendants deny Trading Technologies’ claims, assert that the asserted patents are not infringed and are invalid, and assert several other defenses as well. 

The asserted patents were the subject of petitions before the United States Patent and Trademark Office (“USPTO”) seeking Covered Business Method Review (“CBM Review”). The USPTO Patent Trial Appeal Board (“PTAB”) found all claims of ten of the twelve asserted patents to be invalid. Of the remaining two patents, 53 of the 56 claims of one patent were held invalid and the other patent survived CBM Review proceedings. Appeals were filed by either Defendants or Trading Technologies on all PTAB determinations.

The United States Court of Appeals for the Federal Circuit affirmed the PTAB’s CBM Review determinations that eight patents were invalid, and vacated the CBM Review determinations of invalidity for four patents, concluding that these patents were not eligible for CBM Review. The District Court proceedings on the four patents where the CBM Review determinations had been vacated thereafter resumed in March 2019.

In June 2021, the District Court granted summary judgment in favor of the Defendants, finding that two of the remaining four patents are invalid. Thereafter, two patents remained in dispute. The District Court trial with respect to these two patents began on August 6, 2021.

While it is difficult to predict the outcome of the matter, the Company believes it has meritorious defenses to the allegations made in the complaint and intends to defend itself 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.

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Class Action Matter

On December 18, 2015, a former individual customer filed a purported class action complaint against IB LLC, IBG, Inc., and Thomas Frank, Ph.D., the Company’s Executive Vice President and Chief Information Officer, in the U.S. District Court for the District of Connecticut. The complaint alleges that the purported class of IB LLC’s customers were harmed by alleged “flaws” in the computerized system used to close out (i.e., liquidate) positions in customer brokerage accounts that have margin deficiencies. The complaint seeks, among other things, undefined compensatory damages and declaratory and injunctive relief.

On September 28, 2016, the District Court issued an order granting the Company’s motion to dismiss the complaint in its entirety, and without providing plaintiff leave to amend. On September 28, 2017, plaintiff appealed to the United States Court of Appeals for the Second Circuit. On September 26, 2018, the Court of Appeals affirmed the dismissal of plaintiff’s claims of breach of contract and commercially unreasonable liquidation but vacated and remanded back to the District Court plaintiff’s claims for negligence. On November 30, 2018, the plaintiff filed a second amended complaint. The Company filed a motion to dismiss the new complaint on January 15, 2019, which was denied on September 30, 2019. On December 9, 2019, the Company filed a motion requesting that the District Court certify to the Connecticut Supreme Court two questions of Connecticut law directly relevant to the motion to dismiss. The Court denied the Company’s motion to certify on May 15, 2020. Currently, Plaintiff’s motion for class certification is due on December 1, 2021. The Company does not believe that a purported class action is appropriate given the great differences in portfolios, markets and many other circumstances surrounding the liquidation of any particular customer’s margin-deficient account. IB LLC and the related defendants intend to continue to defend themselves vigorously against the case and, consistent with past practice in connection with this type of unwarranted action, any potential claims for counsel fees and expenses incurred in defending the case may be fully pursued against the plaintiff.

“Short Squeeze” Antitrust Litigation

Beginning in late January 2021, more than three dozen federal class action lawsuits were filed in different jurisdictions against various brokers and other market participants claiming that the defendants acted improperly in restricting trading in the shares of and options on GameStop Corp. and other companies that were subject to unusual trading in January 2021 in what has been referred to as the “Reddit-related short-squeeze”. Most of these cases assert federal antitrust claims, including alleging an illegal antitrust conspiracy among the defendants, as well as various state and federal securities-related claims. IB LLC and its affiliates have been named as defendants in several of these class action lawsuits. The cases were consolidated into a multidistrict litigation (“MDL”), and were transferred to the Southern District of Florida on April 1, 2021 for pre-trial proceedings. By the Order dated May 18, 2021, the Court divided the cases into four tranches: (1) antitrust claims (“Antitrust Tranche”); (2) state-law claims against Robinhood entities (“Robinhood Tranche”); (3) state-law claims against other defendants (“Other Broker Tranche”); and (4) federal security law claims (“Federal Securities Tranche”). The same Order appointed lead plaintiffs’ counsel for the Antitrust, Robinhood, and Other Broker Tranches. On July 13, 2021, the plaintiffs voluntarily dismissed the Robinhood Tranche case. Master complaints for the Antitrust and Other Broker Tranche cases were due on July 26, 2021. The defendants’ motions to dismiss for those cases are due on August 30, 2021. The pleading dates for the Federal Securities Tranche will not be set until lead plaintiffs’ counsel for that case is appointed. The Company believes that the claims asserted against IB LLC and its affiliates lack merit on their face and the Company intends to file, at the appropriate time, a motion to dismiss any class action that might name IB LLC and its affiliates as defendants. 

Regulatory Matters

The Company is subject to regulatory oversight and examination by numerous governmental and self-regulatory authorities. As announced on August 10, 2020, the Company agreed to settle certain matters related to its historical anti-money laundering and Bank Secrecy Act practices and procedures with FINRA, the SEC and the CFTC. As part of the settlements, the Company agreed to pay penalties of $15 million to FINRA, $11.5 million to the SEC and $11.5 million to the CFTC, plus approximately $700,000 in disgorgement. In addition, the Company agreed to continue the retention of an independent consultant to review the implementation of its enhanced compliance practices and procedures. The Company is also cooperating with a United States Department of Justice inquiry concerning these matters, and while its outcome cannot be predicted, the Company does not believe that the resolution of this inquiry is likely to have a materially adverse effect on its financial results.

Guarantees

Certain of the operating subsidiaries provide guarantees to securities and commodities clearing houses and exchanges which meet the accounting definition of a guarantee under FASB ASC Topic 460, “Guarantees.” Under standard membership agreements, clearing house and exchange members are required to guarantee collectively the performance of other members. Under the agreements, if a member becomes unable to satisfy its obligations, other members would be required to meet shortfalls. In the opinion of management, the operating subsidiaries’ 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 subsidiaries to be required to make payments under these arrangements is remote. Accordingly, no contingent liability is carried in the condensed consolidated statements of financial condition for these arrangements.

In connection with its retail brokerage business, IB LLC or other electronic brokerage operating subsidiaries perform securities and commodities execution, clearance and settlement on behalf of their customers for whom they commit to settle trades submitted by such customers with the respective clearing houses. If a customer fails to fulfill its settlement obligations, the respective operating subsidiary must fulfill those settlement obligations. No contingent liability is carried on the condensed consolidated statements of financial condition for such customer obligations.

Other Commitments

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

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Geographic Information

6 Months Ended

Jun. 30, 2021

Geographic Information [Abstract]

Geographic Information

14.  Geographic Information

The Company operates its automated global business in the U.S. and international markets on more than 135 electronic exchanges and market centers. A significant portion of the Company’s net revenues is generated by subsidiaries operating outside the U.S. International operations are conducted in 32 countries in Europe, Asia/Pacific and the Americas (outside the U.S.). The following table presents total net revenues and income before income taxes by geographic area for the periods indicated.

Significant transactions and balances between the operating subsidiaries occur, primarily as a result of certain operating subsidiaries holding exchange or clearing organization memberships, which are utilized to provide execution and clearing services to subsidiaries. Intra-region income and expenses and related balances have been eliminated in this geographic information to reflect the external business conducted in each geographic region. The geographic analysis presented below is based on the location of the subsidiaries in which the transactions are recorded. This geographic information does not reflect the way the Company’s business is managed.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Net revenues
United States	$	565	$	390	$	1,216	$	763
International		189		149		431		308
Total net revenues	$	754	$	539	$	1,647	$	1,071
Income before income taxes
United States	$	473	$	174	$	1,029	$	418
International		68		48		151		112
Total income before income taxes	$	541	$	222	$	1,180	$	530

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Regulatory Requirements

6 Months Ended

Jun. 30, 2021

Regulatory Requirements [Abstract]

Regulatory Requirements

15.  Regulatory Requirements

As of June 30, 2021, aggregate excess regulatory capital for all operating subsidiaries was $6.2 billion.

IB LLC, IBKR Securities Services LLC (formerly, Timber Hill LLC) and Interactive Brokers Corp are subject to the Uniform Net Capital Rule (Rule 15c3-1) under the Exchange Act, IB LLC is also subject to the CFTC’s minimum financial requirements (Regulation 1.17), and IBKRFS is subject to the Swiss Financial Market Supervisory Authority eligible equity requirement. IBC is subject to the Investment Industry Regulatory Organization of Canada risk adjusted capital requirement, IBUK is subject to the United Kingdom Financial Conduct Authority Capital Requirements Directive, IBIE is subject to the Central Bank of Ireland financial resources requirement, IBLUX is subject to the Luxembourg Commission de Surveillance du Secteur Financier financial resources requirement, IBCE is subject to the Hungarian National Bank financial resource requirement, IBI is subject to the National Stock Exchange of India net capital requirements, IBHK is subject to the Hong Kong Securities Futures Commission liquid capital requirement, IBSJ is subject to the Japanese Financial Supervisory Agency capital requirements, IBSG is subject to the Monetary Authority of Singapore capital requirements, and IBA is subject to the Australian Securities Exchange liquid capital requirement.

The table below summarizes capital, capital requirements and excess regulatory capital as of June 30, 2021.

	Net Capital/
	Eligible Equity		Requirement		Excess
	(in millions)
IB LLC	$	4,831	$	912	$	3,919
IBKRFS		611		11		600
IBHK		788		330		458
Other regulated operating subsidiaries		1,721		513		1,208
	$	7,951	$	1,766	$	6,185

Regulatory capital requirements could restrict the operating subsidiaries from expanding their business and declaring dividends if their net capital does not meet regulatory requirements. Also, certain operating subsidiaries are subject to other regulatory restrictions and requirements.

As of June 30, 2021, all regulated operating subsidiaries were in compliance with their respective regulatory capital requirements.

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Related Party Transactions	6 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	16.  Related Party Transactions Receivable from affiliate, reported in other assets in the condensed consolidated statement of financial condition, represents amounts advanced to Holdings and payable to affiliate represents amounts payable to Holdings under the Tax Receivable Agreement (see Note 4). Included in receivables from and payables to customers in the condensed consolidated statements of financial condition as of June 30, 2021 and December 31, 2020 were accounts receivable from directors, officers and their affiliates of $32 million and $283 million, respectively, and payables of $938 million and $999 million, respectively. The Company may extend credit to these related parties in connection with margin and securities loans. Such loans are (i) made in the ordinary course of business, (ii) are made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable loans with persons not related to the company, and (iii) do not involve more than the normal risk of collectability or present other unfavorable features. Included in short-term borrowings as of June 30, 2021 and December 31, 2020 are senior notes purchased by directors, officers and their affiliates of $22 million and $16 million, respectively.

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Senior Notes Payable

6 Months Ended

Jun. 30, 2021

Senior Notes Payable [Abstract]

Senior Notes Payable

17. Senior Notes Payable

IBG LLC from time to time may offer senior notes in private placements to certain qualified customers of IB LLC at an issue price of $1 thousand dollars per note. The senior notes will mature no later than the thirtieth day following the issuance date. IBG LLC, at its option, may redeem the senior notes at any time, at a redemption price equal to 100% of the principal amount of the senior notes to be redeemed, plus accrued. The senior notes will pay a fixed rate of interest during their tenure. The interest rate is calculated by adding the benchmark rate to a rate (spread) that IBG LLC will announce from time-to-time. The benchmark rate is the effective federal funds rate as reported by the Federal Reserve Bank of New York on the morning of the date of the offering. IBG LLC intends to use the proceeds for general financing purposes when interest spread opportunities arise.

The carrying value of the senior notes approximate their fair value since they are short-term in nature. During the six months ended June 30, 2021, IBG LLC issued senior notes of $1,237 million and redeemed senior notes of $1,081 million, respectively. The senior notes carried a weighted average interest rate of 1%. As of June 30, 2021 and December 31, 2020, IBG LLC had senior notes outstanding of $252 million and $96 million, respectively, all of which carried a 1% per annum interest rate, and are included in short-term borrowings in the condensed consolidated statements of financial condition. All the outstanding senior notes at June 30, 2021 were redeemed by August 9, 2021. In addition, the Company issued and redeemed $192 million of senior notes during the period from July 1, 2021 through August 9, 2021. Interest expense on the senior notes for the six months ended June 30, 2021 was $1 million.

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Subsequent Events

6 Months Ended

Jun. 30, 2021

Subsequent Events [Abstract]

Subsequent Events

18.  Subsequent Events

The Company has evaluated subsequent events for adjustment to or disclosure in its condensed consolidated financial statements through the date the condensed consolidated financial statements were issued.

Except as disclosed above and in Note 4, Note 13, and Note 17, no other recordable or disclosable events occurred.

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2021

Significant Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

These condensed consolidated financial statements are presented in U.S. dollars and have been prepared in accordance with accounting principles generally accepted in the U.S. (“U.S. GAAP”) and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding financial reporting with respect to Form 10-Q.

These condensed consolidated financial statements are unaudited and should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s 2020 Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the SEC on March 1, 2021. The condensed consolidated financial information as of December 31, 2020 has been derived from the audited financial statements not included herein.

These condensed consolidated financial statements include the accounts of the Company and its consolidated subsidiaries and reflect all adjustments of a normal and recurring nature that are, in the opinion of management, necessary for the fair presentation of the results for the periods presented. The operating results for interim periods are not necessarily indicative of the operating results for the entire year.

In March 2020, the World Health Organization recognized the outbreak of the Coronavirus Disease 2019 (“COVID-19”) caused by a novel strain of the coronavirus as a pandemic. The pandemic has affected all countries in which the Company operates. The response of governments and societies to the COVID-19 pandemic, which includes temporary closures of certain businesses; social distancing; travel restrictions, “shelter in place” and other governmental regulations; and reduced consumer spending due to job losses, has significantly impacted volatility in the financial, commodities and energy markets, and general economic conditions.

The effects of the COVID-19 pandemic on the Company’s financial results which may have lasting effects as more investors are brought into the financial markets can be summarized as follows: (1) higher commission revenue due to increased trading activity and a higher rate of customer accounts opened throughout 2020 and into 2021; and (2) generally lower net interest margin resulting from lower benchmark interest rates.

The impact of the COVID-19 pandemic on the Company’s future financial results remains uncertain and currently cannot be quantified, as it will depend on numerous evolving factors that currently cannot be accurately predicted, including, but not limited to the duration and spread of the pandemic; its impact on the Company’s customers, employees and vendors; governmental actions in response to the pandemic; and the overall impact of the pandemic in the economy and society; among other factors. Any of these

events could have significant accounting and financial reporting implications (i.e., reassessing accounting estimates related to credit losses, valuation of certain investments, deferred tax assets and contingency reserves). The Company has reviewed its assumptions related to the above estimates and have not made any adjustments.

Principles Of Consolidation, Including Noncontrolling Interests

Principles of Consolidation, including Noncontrolling Interests

These 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 IBG LLC’s operations. In accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 810, “Consolidation,” the Company consolidates IBG LLC’s financial statements and records the interests in IBG LLC that it does not own as noncontrolling interests.

The Company’s policy is to consolidate all other entities in which it owns more than 50% unless it does not have control. All inter-company balances and transactions have been eliminated.

Use Of Estimates

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 these condensed consolidated financial statements and accompanying notes. These estimates and assumptions are based on judgment and the best available information at the time. Therefore, actual results could differ materially from those estimates. Such estimates include the allowance for credit losses, valuation of certain investments, compensation accruals, current and deferred income taxes, and contingency reserves.

Fair Value

Fair Value

Substantially all of the Company’s assets and liabilities, including financial instruments, are carried at fair value based on published market prices and are marked to market, or are assets and liabilities which are short-term in nature and are carried at amounts that approximate fair value.

The Company applies the fair value hierarchy in accordance with FASB ASC Topic 820, “Fair Value Measurement” (“ASC Topic 820”), 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 for similar assets in an active market, 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.
Level 3	Prices or valuations that require inputs that are both significant to fair value measurement and unobservable.

Financial instruments owned, at fair value and financial instruments sold, but not yet purchased, at fair value are generally classified as Level 1 of the fair value hierarchy. The Company’s 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 active listed stocks, options, warrants, and U.S. and foreign government securities. The Company does not adjust quoted prices for financial instruments classified as Level 1 of the fair value hierarchy, 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 are valued using broadly distributed bank and broker prices, and are classified as Level 2 of the fair value hierarchy since inputs to their valuation can be generally corroborated by market data. Precious metals are valued using an internal model, which incorporates the exchange-traded futures price of the underlying instruments, benchmark interest rates and estimated storage costs, and are classified as Level 2 of the fair value hierarchy since the significant inputs to their valuation are observable. Other securities that are not traded in active markets are also classified as Level 2 of the fair value hierarchy. Level 3 financial instruments are comprised of securities that have been delisted or otherwise are no longer tradable in active markets and have been valued by the Company based on internal estimates.

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Earnings Per Share

Earnings per Share

Earnings per share (“EPS”) is computed in accordance with FASB ASC Topic 260, “Earnings per Share.” Basic EPS is computed by dividing the net income available for common stockholders by the weighted average number of shares outstanding for that period. Diluted EPS is calculated by dividing the net income available for common stockholders by the diluted weighted average shares outstanding for that period. Diluted EPS includes the determinants of basic EPS and, in addition, reflects the dilutive effect of shares of common stock estimated to be distributed in the future under the Company’s stock-based compensation plans, with no adjustments to net income available for common stockholders for potentially dilutive common shares.

Current Expected Credit Losses

Current Expected Credit Losses

The Company follows FASB ASC Topic 326 – “Financial Instruments – Credit Losses” (“ASC Topic 326”) which applies to financial assets measured at amortized cost, held-to-maturity debt securities and off-balance sheet credit exposures. For on-balance sheet assets, an allowance must be recognized at the origination or purchase of in-scope assets and represents the expected credit losses over the contractual life of those assets. Expected credit losses on off-balance sheet credit exposures must be estimated over the contractual period the Company is exposed to credit risk as a result of a present obligation to extend credit. The impact to the current period is not material since the Company’s in-scope assets are primarily subject to collateral maintenance provisions for which the Company elected to apply the practical expedient of reporting the difference between the fair value of collateral and the amortized cost for the in-scope assets as the allowance for current expected credit losses.

Cash And Cash Equivalents

Cash and Cash Equivalents

Cash and cash equivalents consist of deposits with banks and all highly liquid investments, with maturities of three months or less, that are not segregated and deposited for regulatory purposes or to meet margin requirements at clearing houses and clearing banks.

Cash And Securities - Segregated For Regulatory Purposes

Cash and Securities – Segregated for Regulatory Purposes

As a result of customer activities, certain operating subsidiaries are obligated by rules mandated by their primary regulators to segregate or set aside cash or qualified securities to satisfy such regulations, which have been promulgated to protect customer assets. Restricted cash represents cash and cash equivalents that are subject to withdrawal or usage restrictions. Cash segregated for regulatory purposes meets the definition of restricted cash and is included in “cash, cash equivalents, and restricted cash” in the condensed consolidated statements of cash flows.

The table below presents the composition of the Company’s securities segregated for regulatory purposes for the periods indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
U.S. government securities	$	3,925	$	4,750
Securities purchased under agreements to resell 1		11,710		23,071
	$	15,635	$	27,821

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(1)These balances are collateralized by U.S. government securities.

Securities Borrowed And Securities Loaned

Securities Borrowed and Securities Loaned

Securities borrowed and securities loaned are recorded at the amount of the cash collateral advanced or received. Securities borrowed transactions require the Company to provide counterparties with collateral, which may be in the form of cash, letters of credit or other securities. With respect to securities loaned, the Company 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. The Company monitors the market value of securities borrowed and loaned on a daily basis, with additional collateral obtained or refunded as permitted contractually. The Company’s policy is to net, in the condensed consolidated statements of financial condition, securities borrowed and securities loaned entered into with the same counterparty that meet the offsetting requirements prescribed in FASB ASC Topic 210-20, “Balance Sheet – Offsetting” (“ASC Topic 210-20”).

Securities lending fees received and paid by the Company are included in interest income and interest expense, respectively, in the condensed consolidated statements of comprehensive income.

Securities Purchased Under Agreements To Resell and Securities Sold Under Agreements to Repurchase

Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase

Securities purchased under agreements to resell and securities sold under agreements to repurchase, which are reported as collateralized financing transactions, are recorded at contract value, which approximates fair value. To ensure that the fair value of the underlying collateral remains sufficient, the collateral is valued daily with additional collateral obtained or excess collateral returned, as permitted under contractual provisions. The Company’s policy is to net, in the condensed consolidated statements of financial condition, securities purchased under agreements to resell transactions and securities sold under agreements to repurchase transactions entered into with the same counterparty that meet the offsetting requirements prescribed in ASC Topic 210-20.

Financial Instruments Owned And Sold But Not Yet Purchased, at Fair Value

Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased, at Fair Value

Financial instrument transactions are accounted for on a trade date basis. Financial instruments owned and financial instruments sold, but not yet purchased are stated at fair value based upon quoted market prices, or if not available, are valued by the Company based on internal estimates (see Fair Value above). The Company’s financial instruments pledged to counterparties where the counterparty has the right, by contract or custom, to sell or repledge the financial instruments are reported as financial instruments owned and pledged as collateral in the condensed consolidated statements of financial condition.

Customer Receivables And Payables

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 condensed consolidated statements of financial condition. Amounts receivable from customers that are determined by management to be uncollectible are recorded as customer bad debt expense in the condensed consolidated statements of comprehensive income.

Receivables From And Payables To Brokers, Dealers And Clearing Organizations

Receivables from and Payables to Brokers, Dealers and Clearing Organizations

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

Investments

Investments

The Company makes certain strategic investments related to its business which are included in other assets in the condensed consolidated statements of financial condition. The Company accounts for these investments as follows:

Under the equity method of accounting as required under FASB ASC Topic 323, “Investments – Equity Method and Joint Ventures.” These investments, including where the investee is a limited partnership or limited liability company, are recorded at the fair value amount of the Company’s initial investment and are adjusted each period for the Company’s share of the investee’s income or loss. Contributions paid to and distributions received from equity method investees are recorded as additions or reductions, respectively, to the respective investment balance.

At fair value if the investment in equity securities has a readily determinable fair value.

At adjusted cost if the investment does not have a readily determinable fair value. Adjusted cost represents the historical cost, less impairment, if any. If the Company identifies observable price changes in orderly transactions for the identical or a similar investment of the same issuer, the Company measures the equity security at fair value as of the date that the observable transaction occurred in accordance with FASB ASC Topic 321, “Investments in Equity Securities.”

A judgmental aspect of accounting for investments is evaluating whether a decline in the value of an investment has occurred. The evaluation of an 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. Most of the Company’s equity investments do not have readily determinable market values. All investments are reviewed for changes in circumstances or occurrence of events that suggest the Company’s investment may not be recoverable. An impairment loss, if any, is recognized in the period the determination is made.

The table below presents the composition of the Company’s investments for the periods indicated.

	June 30,		December 31,
	2021		2020
	(in millions)
Equity method investments1	$	14	$	11
Investments in equity securities at adjusted cost2		13		10
Investments in equity securities at fair value2		291		80
Investments in exchange memberships and equity securities of certain exchanges2		3		3
	$	321	$	104

________________________

(1)The Company’s share of income or losses is included in other income in the condensed consolidated statements of comprehensive income.

(2)These investments do not qualify for equity method of accounting and the dividends received are included in other income in the condensed consolidated statements of comprehensive income.

Property, Equipment, and Intangible Assets

Property, Equipment, and Intangible Assets

Property, equipment, and intangible assets, which are included in other assets in the condensed consolidated statements of financial condition, consist of leasehold improvements, computer equipment, software developed for the Company’s internal use, 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. Intangible assets with a finite life are amortized on a straight-line basis over their estimated useful lives of three years, and tested for recoverability whenever events indicate that the carrying amounts may not be recoverable. Qualifying costs for internally developed software are capitalized and amortized over the expected useful life of the developed software, not to exceed three years. Upon retirement or disposition of property and equipment, the cost and related accumulated depreciation are removed from the condensed consolidated statements of financial condition and any resulting gain or loss is recorded in other income in the condensed consolidated statements of comprehensive income. Fully depreciated (or amortized) assets are retired periodically throughout the year.

Leases

Leases

The Company reviews all relevant contracts to determine if the contract contains a lease at its inception date. A contract contains a lease if the contract conveys to the company the right to control the use of an underlying asset for a period of time in exchange for consideration. If the Company determines that a contract contains a lease, it recognizes, in the condensed consolidated statements of financial condition, a lease liability and a corresponding right-of-use asset on the commencement date of the lease. The lease liability is initially measured at the present value of the future lease payments over the lease term using the rate implicit in the lease or, if not readily determinable, the Company’s secured incremental borrowing rate. An operating lease right-of-use asset is initially measured at the value of the lease liability minus any lease incentives and initial direct costs incurred plus any prepaid rent.

The Company’s leases are classified as operating leases and consist of real estate leases for office space, data centers and other facilities. Each lease liability is measured using the Company’s secured incremental borrowing rate, which is based on an internally developed yield curve using interest rates of third parties’ corporate debt issued with a similar risk profile as the Company and a duration similar to the lease term. The Company’s leases have remaining terms of one to twelve years, some of which include options to extend the lease term, and some of which include options to terminate the lease upon notice. The Company considers these options when determining the lease term used to calculate the right-of-use asset and the lease liability when the Company is reasonably certain it will exercise such option.

The Company’s operating leases contain both lease components and non-lease components. Non-lease components are distinct elements of a contract that are not related to securing the use of the underlying assets, such as common area maintenance and other management

costs. The Company elected to measure the lease liability by combining the lease and non-lease components as a single lease component. As such, the Company includes the fixed payments and any payments that depend on a rate or index that relate to the lease and non-lease components in the measurement of the lease liability. Some of the non-lease components are variable in nature and not based on an index or rate, and as a result, are not included in the measurement of the right-of-use asset or lease liability.

Operating lease expense is recognized on a straight-line basis over the lease term and is included in occupancy, depreciation and amortization, expense in the Company’s condensed consolidated statements of comprehensive income.

Comprehensive Income And Foreign Currency Translation

Comprehensive Income and Foreign Currency Translation

The Company’s operating results are reported in the condensed consolidated statements of comprehensive income pursuant to FASB ASC Topic 220, “Comprehensive Income.”

Comprehensive income consists of two components: net income and other comprehensive income (“OCI”). The Company’s OCI is comprised of gains and losses resulting from translating foreign currency financial statements of non-U.S. subsidiaries, net of related income taxes, where applicable. In general, the practice and intention of the Company is to reinvest the earnings of its non-U.S. subsidiaries in those operations, therefore tax is usually not accrued on OCI.

The Company’s non-U.S. domiciled subsidiaries have a functional currency 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. Adjustments that result from translating amounts from a subsidiary’s functional currency to the U.S. dollar (as described above) are reported net of tax, where applicable, in accumulated OCI in the condensed consolidated statements of financial condition.

Revenue Recognition

Revenue Recognition

Commissions

Commissions earned for executing and/or clearing transactions are accrued on a trade date basis and are reported as commissions in the condensed consolidated statements of comprehensive income. Commissions also include payments for order flow income received from IBKR Lite^SM liquidity providers. The Company’s IBKR Lite^SM offering provides commission-free trades on U.S. exchange-listed stocks and ETFs and generates no commission revenues from customers on these trades. See Note 8 for further information on revenue from contracts with customers.

Other Fees and Services

The Company earns fee income on services provided to customers, which includes market data fees, risk exposure fees, payments for order flow from exchange-mandated programs, minimum activity fees, and other fees and services charged to customers. Fee income is recognized either daily or monthly. See Note 8 for further information on revenue from contracts with customers.

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, which are recorded on an accrual basis and are included in interest income and interest expense, respectively, in the condensed consolidated statements of comprehensive income.

Principal Transactions

Principal transactions include gains and losses as a result of changes in the fair value of financial instruments owned, at fair value, financial instruments sold, but not yet purchased, at fair value, and other investments measured at fair value (i.e., unrealized gains and losses) and realized gains and losses related to the Company’s principal transactions. Included are net gains and losses on stocks, options, U.S. and foreign government securities, futures, foreign exchange, precious metals, and other derivative instruments. Dividends are integral to the valuation of stocks. Accordingly, dividends income and expense attributable to financial instruments owned, at fair value and financial instruments sold, but not yet purchased, at fair value, are reported on a net basis in other income in the condensed consolidated statements of comprehensive income.

‎

Foreign Currency Gains and Losses

Foreign currency balances are assets and liabilities in currencies other than the Company’s functional currency. At every reporting date, the Company revalues its foreign currency balances to its functional currency at the spot exchange rate and records the associated foreign currency gains and losses. These foreign currency gains and losses are reported in the condensed consolidated statements of comprehensive income, as follows: (a) foreign currency gains and losses related to the Company’s currency diversification strategy are reported in other income; (b) foreign currency gains and losses arising from currency swap transactions are reported in interest income or interest expense; and (c) all other foreign currency gains and losses are reported in other income.

Rebates

Rebates

Rebates consist of volume discounts, credits or payments received from exchanges or other market centers related to the placement and/or removal of liquidity from the marketplace and are recorded on an accrual basis. Rebates are recorded net within execution, clearing and distribution fees in the condensed consolidated statements of comprehensive income. Rebates received for trades executed on behalf of customers that elect tiered pricing are passed, in whole or part, to these customers; and such pass-through amounts are recorded net within commissions in the condensed consolidated statements of comprehensive income.

Stock-Based Compensation

Stock-Based Compensation

The Company follows FASB ASC Topic 718, “Compensation - Stock Compensation” (“ASC Topic 718”), to account for its stock-based compensation plans. ASC Topic 718 requires all share-based payments to employees to be recognized in the consolidated financial statements using a fair value-based method. Grants, which are denominated in U.S. dollars, are communicated to employees in the year of grant, thereby establishing the fair value of each grant. The fair value of awards granted to employees are generally expensed as follows: 50% in the year of grant in recognition of the plans’ post-employment provisions (as described below) and the remaining 50% over the related vesting period utilizing the “graded vesting” method permitted under ASC Topic 718. In the case of “retirement eligible” employees (those employees older than 59), 100% of awards are expensed when granted.

Awards granted under stock-based compensation plans are subject to the plans’ post-employment provisions 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 be eligible to earn 50% of previously granted but not yet earned awards, unless the employee is over the age of 59, in which case the employee would be eligible to receive 100% of previously granted but not yet earned awards.

Income Taxes

Income Taxes

The Company accounts for income taxes in accordance with FASB ASC Topic 740, “Income Taxes” (“ASC Topic 740”). The Company’s income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits are based on enacted tax laws (see Note 11) and reflect management’s best assessment of estimated future taxes to be paid. The Company is subject to income taxes in the U.S. and numerous foreign jurisdictions. Determining income tax expense requires significant judgment and estimates.

Deferred income tax assets and liabilities arise from temporary differences between the tax and financial statement recognition of underlying assets and liabilities. In evaluating the ability to recover deferred tax assets within the jurisdictions from which they arise, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. In projecting future taxable income, historical results are adjusted for changes in accounting policies and incorporate assumptions including the amount of future state, federal and foreign pre-tax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax-planning strategies. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates the Company is using to manage the underlying businesses. In evaluating the objective evidence that historical results provide, three years of cumulative operating income (loss) are considered. Deferred income taxes have not been provided for U.S. tax liabilities or for additional foreign taxes on the unremitted earnings of foreign subsidiaries that have been indefinitely reinvested.

The calculation of the Company’s tax liabilities involves dealing with uncertainties in the application of complex tax laws and regulations in a multitude of jurisdictions across the Company’s global operations. Changes in tax laws and rates could also affect recorded deferred tax assets and liabilities in the future.

The Company records tax liabilities in accordance with ASC Topic 740 and adjusts these liabilities when management’s judgment changes as a result of the evaluation of new information not previously available. Because of the complexity of some of these uncertainties, the ultimate resolution may result in payments that are different from the current estimates of these tax liabilities. These

differences will be reflected as increases or decreases to income tax expense in the period in which new information becomes available.

The Company recognizes a tax benefit from an uncertain tax position only when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, on the basis of the technical merits. A tax position that meets this standard is measured at the largest amount of benefit that will more likely than not be realized on settlement.

The Company recognizes interest related to income tax matters as interest income or interest expense and penalties related to income tax matters as income tax expense in the condensed consolidated statements of comprehensive income.

Recently Issued Accounting Pronouncements

FASB Standards Adopted During 2021

Standard	Summary of guidance	Effect on financial statements
Income Taxes (Topic 740) ‎ ‎Issued December 2019	• Simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740.	• Adopted January 1, 2021. • The adoption of the changes did not have a material impact on the Company’s consolidated financial statements.

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Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2021

Significant Accounting Policies [Abstract]

Schedule Of Securities Segregated For Regulatory Purposes

	June 30,		December 31,
	2021		2020
	(in millions)
U.S. government securities	$	3,925	$	4,750
Securities purchased under agreements to resell 1		11,710		23,071
	$	15,635	$	27,821

________________________

(1)These balances are collateralized by U.S. government securities.

Composition Of Investment

	June 30,		December 31,
	2021		2020
	(in millions)
Equity method investments1	$	14	$	11
Investments in equity securities at adjusted cost2		13		10
Investments in equity securities at fair value2		291		80
Investments in exchange memberships and equity securities of certain exchanges2		3		3
	$	321	$	104

________________________

(1)The Company’s share of income or losses is included in other income in the condensed consolidated statements of comprehensive income.

(2)These investments do not qualify for equity method of accounting and the dividends received are included in other income in the condensed consolidated statements of comprehensive income.

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Equity And Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Equity And Earnings Per Share [Abstract]

IBG LLC Ownership of Member Interests

	IBG, Inc.	Holdings	Total
Ownership %	22.0%	78.0%	100.0%
Membership interests	92,091,373	325,960,034	418,051,407

Earnings Per Share Basic And Diluted

Basic earnings per share is 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 June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Basic earnings per share
Net income available for common stockholders	$	92	$	32	$	199	$	78
Weighted average shares of common stock outstanding
Class A		91,365,134		77,357,509		91,078,768		77,054,288
Class B		100		100		100		100
		91,365,234		77,357,609		91,078,868		77,054,388
Basic earnings per share	$	1.01	$	0.41	$	2.19	$	1.01

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 potentially dilutive common shares.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Diluted earnings per share
Net income available for common stockholders	$	92	$	32	$	199	$	78
Weighted average shares of common stock outstanding
Class A
Issued and outstanding		91,365,134		77,357,509		91,078,768		77,054,288
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans		833,935		673,853		905,378		745,575
Class B		100		100		100		100
		92,199,169		78,031,462		91,984,246		77,799,963
Diluted earnings per share	$	1.00	$	0.40	$	2.17	$	1.00

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Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2021

Comprehensive Income Detail [Abstract]

Comprehensive Income Table

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions, except share or per share amounts)
Comprehensive income available for common stockholders	$	97	$	36	$	187	$	75
Earnings per share on comprehensive income
Basic	$	1.06	$	0.46	$	2.06	$	0.97
Diluted	$	1.05	$	0.46	$	2.04	$	0.96
Weighted average common shares outstanding
Basic		91,365,234		77,357,609		91,078,868		77,054,388
Diluted		92,199,169		78,031,462		91,984,246		77,799,963

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Financial Assets And Financial Liabilities (Tables)

6 Months Ended

Jun. 30, 2021

Financial Assets And Financial Liabilities [Abstract]

Fair Value Table

	Financial Assets at Fair Value as of June 30, 2021
	Level 1		Level 2		Level 3		Total
	(in millions)
Securities segregated for regulatory purposes	$	3,925	$	—	$	—	$	3,925
Financial instruments owned, at fair value
Stocks		647		—		—		647
Options		22		—		—		22
U.S. and foreign government securities		44		—		—		44
Corporate bonds		—		—		1		1
Precious metals		—		11		—		11
Currency forward contracts		—		1		—		1
Total financial instruments owned, at fair value		713		12		1		726
Other assets - other investments at fair value		291		—		—		291
Total financial assets at fair value	$	4,929	$	12	$	1	$	4,942

	Financial Liabilities at Fair Value as of June 30, 2021
	Level 1		Level 2		Level 3		Total
	(in millions)
Financial instruments sold, but not yet purchased, at fair value
Stocks	$	147	$	—	$	—	$	147
Options		25		—		—		25
Precious metals		—		3		—		3
Currency forward contracts		—		16		—		16
Total financial instruments sold, but not yet purchased, at fair value		172		19		—		191
Total financial liabilities at fair value	$	172	$	19	$	—	$	191

	Financial Assets at Fair Value as of December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in millions)
Securities segregated for regulatory purposes	$	4,750	$	—	$	—	$	4,750
Financial instruments owned, at fair value
Stocks		558		—		1		559
Options		28		—		—		28
U.S. and foreign government securities		33		—		—		33
Corporate bonds		—		—		1		1
Currency forward contracts		—		9		—		9
Total financial instruments owned, at fair value		619		9		2		630
Other assets - other investments at fair value		80		—		—		80
Total financial assets at fair value	$	5,449	$	9	$	2	$	5,460

‎

	Financial Liabilities at Fair Value as of December 31, 2020
	Level 1		Level 2		Level 3		Total
	(in millions)
Financial instruments sold, but not yet purchased, at fair value
Stocks	$	120	$	—	$	—	$	120
Options		26		—		—		26
Currency forward contracts		—		7		—		7
Total financial instruments sold, but not yet purchased, at fair value		146		7		—		153
Total financial liabilities at fair value	$	146	$	7	$	—	$	153

Financial Assets and Liabilities Not Measured at Fair Value

	June 30, 2021
	Carrying ‎Value		Fair ‎Value		Level 1		Level 2		Level 3
	(in millions)
Financial assets, not measured at fair value
Cash and cash equivalents	$	3,218	$	3,218	$	3,218	$	—	$	—
Cash - segregated for regulatory purposes		22,099		22,099		22,099		—		—
Securities - segregated for regulatory purposes		11,710		11,710		—		11,710		—
Securities borrowed		3,630		3,630		—		3,630		—
Securities purchased under agreements to resell		4,166		4,166		—		4,166		—
Receivables from customers		49,954		49,954		—		49,954		—
Receivables from brokers, dealers, and clearing organizations		3,983		3,983		—		3,983		—
Interest receivable		108		108		—		108		—
Other assets		15		16		—		2		14
Total financial assets, not measured at fair value	$	98,883	$	98,884	$	25,317	$	73,553	$	14

Financial liabilities, not measured at fair value
Short-term borrowings	$	425	$	425	$	—	$	425	$	—
Securities loaned		11,580		11,580		—		11,580		—
Payables to customers		81,452		81,452		—		81,452		—
Payables to brokers, dealers and clearing organizations		207		207		—		207		—
Interest payable		9		9		—		9		—
Total financial liabilities, not measured at fair value	$	93,673	$	93,673	$	—	$	93,673	$	—

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	December 31, 2020
	Carrying ‎Value		Fair ‎Value		Level 1		Level 2		Level 3
	(in millions)
Financial assets, not measured at fair value
Cash and cash equivalents	$	4,292	$	4,292	$	4,292	$	—	$	—
Cash - segregated for regulatory purposes		15,903		15,903		15,903		—		—
Securities - segregated for regulatory purposes		23,071		23,071		—		23,071		—
Securities borrowed		4,956		4,956		—		4,956		—
Securities purchased under agreements to resell		792		792		—		792		—
Receivables from customers		39,333		39,333		—		39,333		—
Receivables from brokers, dealers, and clearing organizations		1,254		1,254		—		1,254		—
Interest receivable		104		104		—		104		—
Other assets		13		13		—		2		11
Total financial assets, not measured at fair value	$	89,718	$	89,718	$	20,195	$	69,512	$	11

Financial liabilities, not measured at fair value
Short-term borrowings	$	118	$	118	$	—	$	118	$	—
Securities loaned		9,838		9,838		—		9,838		—
Payables to customers		75,882		75,882		—		75,882		—
Payables to brokers, dealers and clearing organizations		182		182		—		182		—
Interest payable		6		6		—		6		—
Total financial liabilities, not measured at fair value	$	86,026	$	86,026	$	—	$	86,026	$	—

Offsetting Assets And Liabilities

	June 30, 2021
	Gross			Amounts			Net Amounts		Amounts Not Offset
	Amounts			Offset in the			Presented in		in the Condensed
	of Financial			Condensed			the Condensed		Consolidated Statements
	Assets and			Consolidated			Consolidated		of Financial Condition
	Liabilities			Statements of			Statements of		Cash or Financial
	Recognized			Financial Condition		2	Financial Condition		Instruments		Net Amount
	(in millions)
Offsetting of financial assets
Securities segregated for regulatory purposes - purchased under agreements to resell	$	11,710	1	$	—		$	11,710	$	(11,710)	$	—
Securities borrowed		3,630			—			3,630		(3,522)		108
Securities purchased under agreements to resell		4,166			—			4,166		(4,166)		—
Financial instruments owned, at fair value
Options		22			—			22		(21)		1
Currency forward contracts		1			—			1		—		1
Total	$	19,529		$	—		$	19,529	$	(19,419)	$	110

	(in millions)
Offsetting of financial liabilities
Securities loaned	$	11,580	$	—	$	11,580	$	(11,029)	$	551
Financial instruments sold, but not yet purchased, at fair value
Options		25		—		25		(21)		4
Currency forward contracts		16		—		16		—		16
Total	$	11,621	$	—	$	11,621	$	(11,050)	$	571

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	December 31, 2020
		Gross		Amounts			Net Amounts		Amounts Not Offset
		Amounts		Offset in the			Presented in		in the Condensed
		of Financial		Condensed			the Condensed		Consolidated Statements
		Assets and		Consolidated			Consolidated		of Financial Condition
		Liabilities		Statements of			Statements of		Cash or Financial
		Recognized		Financial Condition		2	Financial Condition		Instruments		Net Amount
	(in millions)
Offsetting of financial assets
Securities segregated for regulatory purposes - purchased under agreements to resell	$	23,071	1	$	—		$	23,071	$	(23,071)	$	—
Securities borrowed		4,956			—			4,956		(4,716)		240
Securities purchased under agreements to resell		792			—			792		(792)		—
Financial instruments owned, at fair value
Options		28			—			28		(25)		3
Currency forward contracts		9			—			9		—		9
Total	$	28,856		$	—		$	28,856	$	(28,604)	$	252

	(in millions)
Offsetting of financial liabilities
Securities loaned	$	9,838	$	—	$	9,838	$	(9,246)	$	592
Financial instruments sold, but not yet purchased, at fair value
Options		26		—		26		(25)		1
Currency forward contracts		7		—		7		—		7
Total	$	9,871	$	—	$	9,871	$	(9,271)	$	600

________________________

(1)As of June 30, 2021 and December 31, 2020, the Company had $11.7 billion and $23.1 billion, respectively, of securities purchased under agreements to resell that were segregated to satisfy regulatory requirements. These securities are included in “Securities - segregated for regulatory purposes” in the condensed consolidated statements of financial condition.
‎

(2)The Company did not have any balances eligible for netting in accordance with ASC Topic 210-20 at June 30, 2021 and December 31, 2020.

 

Schedule of Securities Financing Transactions

	June 30, 2021
	Remaining Contractual Maturity
	Overnight		Less than		30 – 90		Over 90
	and Open		30 days		days		days		Total
	(in millions)
Securities loaned
Stocks	$	11,535	$	—	$	—	$	—	$	11,535
Corporate bonds		45		—		—		—		45
Total securities loaned	$	11,580	$	—	$	—	$	—	$	11,580

	December 31, 2020
	Remaining Contractual Maturity
	Overnight		Less than		30 – 90		Over 90
	and Open		30 days		days		days		Total
	(in millions)
Securities loaned
Stocks	$	9,811	$	—	$	—	$	—	$	9,811
Corporate bonds		27		—		—		—		27
Total securities loaned	$	9,838	$	—	$	—	$	—	$	9,838

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Collateralized Transactions (Tables)

6 Months Ended

Jun. 30, 2021

Disclosure Collateralized Transactions [Abstract]

Amounts Related To Collateralized Transactions

	June 30, 2021				December 31, 2020
	Permitted		Sold or		Permitted		Sold or
	to Repledge		Repledged		to Repledge		Repledged
	(in millions)
Securities lending transactions	$	67,033	$	5,998	$	64,436	$	4,859
Securities purchased under agreements to resell transactions 1		15,847		15,642		23,859		23,832
Customer margin assets		60,892		16,510		47,609		14,182
	$	143,772	$	38,150	$	135,904	$	42,873

________________________

(1)As of June 30, 2021, $11.7 billion or 75% (as of December 31, 2020, $23.1 billion or 97%) of securities acquired through agreements to resell that are shown as repledged have been deposited in a separate bank account for the exclusive benefit of customers in accordance with SEC Rule 15c3-3.

Financial Instruments Owned and Pledged as Collateral (table)

	June 30,		December 31,
	2021		2020
	(in millions)
Stocks	$	25	$	53
U.S. and foreign government securities		44		33
	$	69	$	86

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Revenue From Contracts With Customers (Tables)

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Geographic location 1
United States	$	216	$	200	$	501	$	397
International		146		116		329		226
	$	362	$	316	$	830	$	623
Major types of services
Commissions	$	307	$	276	$	719	$	545
Market data fees 2		20		15		39		28
Risk exposure fees 2		7		1		12		5
Payments for order flow 2		9		7		19		14
Minimum activity fees 2		9		7		16		13
Other 2		10		10		25		18
	$	362	$	316	$	830	$	623

_____________________________

(1)Based on the location of the subsidiaries in which the revenues are recorded.
‎

(2)Included in other fees and services in the condensed consolidated statements of comprehensive income.

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Other Income (Tables)

6 Months Ended

Jun. 30, 2021

Other Income [Abstract]

Schedule Of Components Of Other Income

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Principal transactions	$	123	$	12	$	243	$	22
Gains (losses) from currency diversification strategy, net		(9)		16		(11)		(33)
Other, net		4		(1)		6		7
	$	118	$	27	$	238	$	(4)

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Employee Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2021

Employee Incentive Plans [Abstract]

Share Grants And Fair Value

			Fair Value at
			Date of Grant
	Units		($ millions)
Prior periods (since inception)	24,497,626		$	561
December 31, 2018	1,146,267			62
December 31, 2019	1,374,217			65
December 31, 2020	1,229,177	1		71
	28,247,287		$	759

______________________________

(1)Stock Incentive Plan number of granted restricted stock units related to 2020 was adjusted by 7,034 additional restricted stock units during the six months ended June 30, 2021.

2007 Stock Incentive Plan, ROI Summary

	Stock
	Incentive Plan
	Units
Balance, December 31, 20201	4,974,355
Granted	—
Cancelled	(23,563)
Distributed	(1,210,929)
Balance, June 30, 2021	3,739,863

_____________________________

(1)Stock Incentive Plan number of granted restricted stock units related to 2020 was adjusted by 7,034 additional restricted stock units during the six months ended June 30, 2021.

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Leases (Tables)

6 Months Ended

Jun. 30, 2021

Leases [Abstract]

Supplemental Balance Sheet Information Related To Operating Leases

	June 30,		December 31,
	2021		2020
	(in millions)
Right-of-use assets1	$	96	$	101
Lease liabilities1	$	116	$	120

__________________________

(1)Right-of-use assets are included in other assets and lease liabilities are included in accounts payable, accrued expenses and other liabilities in the Company’s condensed consolidated statements of financial condition.

Lease Cost

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Operating lease cost	$	7	$	6	$	14	$	12
Variable lease cost		1		1		2		2
Total lease cost	$	8	$	7	$	16	$	14

Undiscounted Cash Flows of Operating Lease

	June 30, 2021
	(in millions)
2021 (remaining)	$	12
2022		21
2023		18
2024		15
2025		15
2026		14
Thereafter		41
Total undiscounted operating lease payments		136
Less: imputed interest		(20)
Present value of operating lease liabilities	$	116

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Geographic Information (Tables)

6 Months Ended

Jun. 30, 2021

Geographic Information [Abstract]

Schedule Of Total Net Revenues And Income Before Income Taxes By Geographic Area

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
	(in millions)
Net revenues
United States	$	565	$	390	$	1,216	$	763
International		189		149		431		308
Total net revenues	$	754	$	539	$	1,647	$	1,071
Income before income taxes
United States	$	473	$	174	$	1,029	$	418
International		68		48		151		112
Total income before income taxes	$	541	$	222	$	1,180	$	530

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Regulatory Requirements (Tables)

6 Months Ended

Jun. 30, 2021

Regulatory Requirements [Abstract]

Summary Of Capital, Capital Requirements And Excess Capital

	Net Capital/
	Eligible Equity		Requirement		Excess
	(in millions)
IB LLC	$	4,831	$	912	$	3,919
IBKRFS		611		11		600
IBHK		788		330		458
Other regulated operating subsidiaries		1,721		513		1,208
	$	7,951	$	1,766	$	6,185

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Organization Of Business (Details) - employee	Jun. 30, 2021	May 03, 2007
Number of employees	2,429
IBG LLC [Member]
IBG Inc. ownership % of IBG LLC	22.00%	10.00%

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Significant Accounting Policies (Narrative) (Details)	6 Months Ended
	Jun. 30, 2021	May 03, 2007
Significant Accounting Policies [Line Items]
SIP expense - Year of grant		50.00%
SIP expense - Remaining vesting period		50.00%
SIP expense - Employees over 59 in year of grant		100.00%
Percent of shares cancelled post employment		50.00%
Over 59 percent of shares eligible		100.00%
Property and equipment useful lives, description	Computer equipment is depreciated over three to five years and office furniture and equipment are depreciated over five to seven years. Intangible assets with a finite life are amortized on a straight-line basis over their estimated useful lives of three years, and tested for recoverability whenever events indicate that the carrying amounts may not be recoverable. Qualifying costs for internally developed software are capitalized and amortized over the expected useful life of the developed software, not to exceed three years.
Maximum [Member] | Computer Equipment [Member]
Significant Accounting Policies [Line Items]
Property and equipment useful lives	5 years
Maximum [Member] | Office Furniture And Equipment [Member]
Significant Accounting Policies [Line Items]
Property and equipment useful lives	7 years
Maximum [Member] | Internally Developed Software [Member]
Significant Accounting Policies [Line Items]
Intangible assets useful lives	3 years
Maximum [Member] | Finite-Lived Intangible Assets [Member]
Significant Accounting Policies [Line Items]
Intangible assets useful lives	3 years
Minimum [Member] | Computer Equipment [Member]
Significant Accounting Policies [Line Items]
Property and equipment useful lives	3 years
Minimum [Member] | Office Furniture And Equipment [Member]
Significant Accounting Policies [Line Items]
Property and equipment useful lives	5 years

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Significant Accounting Policies (Schedule Of Securities Segregated For Regulatory Purposes) (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Marketable Securities [Line Items]
Securities - segregated for regulatory purposes		$ 15,635	$ 27,821
US Government Securities [Member]
Marketable Securities [Line Items]
Securities - segregated for regulatory purposes		3,925	4,750
Securities Purchased Under Agreement To Resell [Member]
Marketable Securities [Line Items]
Securities - segregated for regulatory purposes	[1]	$ 11,710	$ 23,071

[1] These balances are collateralized by U.S. government securities.

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Significant Accounting Policies (Components Of Investments) (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Significant Accounting Policies [Abstract]
Equity method investments	[1]	$ 14	$ 11
Investment in equity securities at adjusted cost	[2]	13	10
Investments in equity securities at fair value	[2]	291	80
Investments in exchange memberships and equity securities of certain exchanges	[2]	3	3
Total investments		$ 321	$ 104

[1] The Company’s share of income or losses is included in other income in the condensed consolidated statements of comprehensive income.

[2] These investments do not qualify for equity method of accounting and the dividends received are included in other income in the condensed consolidated statements of comprehensive income.

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Equity And Earnings Per Share (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended		36 Months Ended	120 Months Ended	170 Months Ended
	Jul. 30, 2021	Jul. 27, 2020	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2010	Dec. 31, 2020	Jun. 30, 2021	May 03, 2007
Equity And Earnings Per Share [Line Items]
IBG Holdings Redemption of IBG LLC										10.00%
IBG Holdings LLC Ownership Percentage of Class B Common Stock										100.00%
Preferred stock shares authorized			10,000		10,000			10,000	10,000
Preferred stock shares issued			0		0			0	0
Preferred stock shares outstanding			0		0			0	0
Amortization period DTA (years)					15 years
Unamortized deferred tax asset arising from equity offerings			$ 175		$ 175			$ 190	$ 175
Percent of tax savings owed to IBG Holdings LLC					85.00%
Percentage of tax savings retained by IBG Inc.					15.00%
Deferred tax asset from common stock offerings			$ 585		$ 585				585
Tax savings owed to IBG Holdings LLC									497
Tax savings retained by IBG Inc.									88
Tax savings paid to IBG Holdings LLC									$ 205
Shares reserved for future issuance										360,000,000
Shares redeemed by IBG Holdings from IBG LLC							5,013,259
Cash Redemptions IBG Holdings							$ 114
Fair Value of Issued Shares in Exchange for Membership Interests								$ 1,100
Stock registered, number of common stock		990,000
Shares Issued					100,000			28,127,765
Distribution from IBG LLC					$ 167
Cash distribution to IBG, Inc.					$ 36
Dividend per share			$ 0.10	$ 0.10	$ 0.10
Dividends paid to common shareholders			$ 9	$ 9	$ 18	$ 15
Declaration Date					Jul. 20, 2021
Payment Date					Sep. 14, 2021
Record Date					Sep. 01, 2021
Mr. Thomas Peterffy [Member]
Equity And Earnings Per Share [Line Items]
Majority stakeholder percentage			89.60%		89.60%				89.60%	84.60%
Subsequent Event [Member]
Equity And Earnings Per Share [Line Items]
Shares Issued	6,079,542
Shares issued, value	$ 376
Subsequent Event [Member] | Mr. Thomas Peterffy [Member]
Equity And Earnings Per Share [Line Items]
Majority stakeholder percentage	90.60%
IBG LLC [Member]
Equity And Earnings Per Share [Line Items]
IBG Inc. ownership % of IBG LLC			22.00%		22.00%				22.00%	10.00%
IBG Holdings ownership % of IBG LLC			78.00%		78.00%				78.00%
IBG LLC [Member] | Holdings [Member]
Equity And Earnings Per Share [Line Items]
IBG Holdings ownership % of IBG LLC										90.00%
IBG LLC [Member] | Subsequent Event [Member]
Equity And Earnings Per Share [Line Items]
IBG Inc. ownership % of IBG LLC	23.50%
Common Class A [Member]
Equity And Earnings Per Share [Line Items]
Common stock, par value			$ 0.01		$ 0.01			$ 0.01	$ 0.01
Shares authorized			1,000,000,000		1,000,000,000			1,000,000,000	1,000,000,000
Common stock, shares issued			92,220,818		92,220,818			90,909,889	92,220,818
Common stock, shares outstanding			92,045,760		92,045,760			90,773,105	92,045,760
Common Class B [Member]
Equity And Earnings Per Share [Line Items]
Common stock, par value			$ 0.01		$ 0.01			$ 0.01	$ 0.01
Shares authorized			100		100			100	100
Common stock, shares issued			100		100			100	100
Common stock, shares outstanding			100		100			100	100

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Equity And Earnings Per Share (IBG LLC Ownership of Member Interests) (Details)	Jun. 30, 2021 shares
Ownership Percentage	100.00%
Membership Interests	418,051,407
IBG Inc [Member]
Ownership Percentage	22.00%
Membership Interests	92,091,373
Holdings [Member]
Ownership Percentage	78.00%
Membership Interests	325,960,034

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Equity And Earnings Per Share (Basic Table) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Basic earnings per share:
Net income available for common stockholders	$ 92	$ 32	$ 199	$ 78
Weighted average shares of common stock outstanding:
Weighted Average Number of Shares Outstanding, Basic	91,365,234	77,357,609	91,078,868	77,054,388
Basic earnings per share	$ 1.01	$ 0.41	$ 2.19	$ 1.01
Common Class A [Member]
Weighted average shares of common stock outstanding:
Weighted Average Number of Shares Outstanding, Basic	91,365,134	77,357,509	91,078,768	77,054,288
Common Class B [Member]
Weighted average shares of common stock outstanding:
Weighted Average Number of Shares Outstanding, Basic	100	100	100	100

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Equity And Earnings Per Share (Diluted Table) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Diluted earnings per share:
Net income available for common stockholders	$ 92	$ 32	$ 199	$ 78
Weighted Average Shares Outstanding [Abstract]
Weighted Average Number of Shares Outstanding, Basic	91,365,234	77,357,609	91,078,868	77,054,388
Potentially dilutive common shares:
Issuable pursuant to employee incentive plans	833,935	673,853	905,378	745,575
Weighted Average Number of Shares Outstanding, Diluted	92,199,169	78,031,462	91,984,246	77,799,963
Earnings Per Share, Diluted	$ 1.00	$ 0.40	$ 2.17	$ 1.00
Common Class A [Member]
Weighted Average Shares Outstanding [Abstract]
Weighted Average Number of Shares Outstanding, Basic	91,365,134	77,357,509	91,078,768	77,054,288
Common Class B [Member]
Weighted Average Shares Outstanding [Abstract]
Weighted Average Number of Shares Outstanding, Basic	100	100	100	100

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Comprehensive Income (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Comprehensive Income Detail [Abstract]
Comprehensive income available for common stockholders	$ 97	$ 36	$ 187	$ 75
Earnings per share on comprehensive income:
Basic	$ 1.06	$ 0.46	$ 2.06	$ 0.97
Diluted	$ 1.05	$ 0.46	$ 2.04	$ 0.96
Weighted average common shares outstanding:
Weighted Average Number of Shares Outstanding, Basic	91,365,234	77,357,609	91,078,868	77,054,388
Weighted Average Number of Shares Outstanding, Diluted	92,199,169	78,031,462	91,984,246	77,799,963

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Financial Assets And Financial Liabilities (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities purchased under agreement to resell segregated for regulatory purposes	$ 11,700	$ 23,100
Total financial instruments owned, at fair value	726	630
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	1	$ 2
Level 3 [Member] | Corporate Bond [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	$ 1

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Financial Assets And Financial Liabilities (Fair Value Table) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities segregated for regulatory purposes	$ 3,925	$ 4,750
Total financial instruments owned, at fair value	726	630
Other assets - other investments at fair value	291	80
Total financial assets at fair value	4,942	5,460
Financial instruments sold, not yet purchased, at fair value	191	153
Total Financial Liabilities at Fair Value	191	153
Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	647	559
Financial instruments sold, not yet purchased, at fair value	147	120
Options Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	22	28
Financial instruments sold, not yet purchased, at fair value	25	26
U.S. And Foreign Government Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	44	33
Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	1	1
Precious Metals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	11
Financial instruments sold, not yet purchased, at fair value	3
Currency Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	1	9
Financial instruments sold, not yet purchased, at fair value	16	7
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities segregated for regulatory purposes	3,925	4,750
Total financial instruments owned, at fair value	713	619
Other assets - other investments at fair value	291	80
Total financial assets at fair value	4,929	5,449
Financial instruments sold, not yet purchased, at fair value	172	146
Total Financial Liabilities at Fair Value	172	146
Level 1 [Member] | Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	647	558
Financial instruments sold, not yet purchased, at fair value	147	120
Level 1 [Member] | Options Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	22	28
Financial instruments sold, not yet purchased, at fair value	25	26
Level 1 [Member] | U.S. And Foreign Government Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	44	33
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	12	9
Total financial assets at fair value	12	9
Financial instruments sold, not yet purchased, at fair value	19	7
Total Financial Liabilities at Fair Value	19	7
Level 2 [Member] | Precious Metals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	11
Financial instruments sold, not yet purchased, at fair value	3
Level 2 [Member] | Currency Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	1	9
Financial instruments sold, not yet purchased, at fair value	16	7
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	1	2
Total financial assets at fair value	1	2
Level 3 [Member] | Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value		1
Level 3 [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total financial instruments owned, at fair value	$ 1	$ 1

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Financial Assets And Financial Liabilities (Financial Assets and Liabilities Not Measured at Fair Value) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Cash and cash equivalents	$ 3,218	$ 4,292	$ 3,115
Cash segregated for regulatory purposes	22,099	15,903	$ 12,684
Securities - segregated for regulatory purposes	15,635	27,821
Securities borrowed	3,630	4,956
Securities purchased under agreements to resell	4,166	792
Receivables from customers	49,954	39,333
Receivables from brokers, dealers and clearing organizations	3,983	1,254
Interest Receivable	108	104
Other assets	812	594
Short-term borrowings	425	118
Securities loaned	11,580	9,838
Payable to customers	81,452	75,882
Brokers, dealers and clearing organizations	207	182
Interest Payable	9	6
at Fair Value
Cash and cash equivalents	3,218	4,292
Cash segregated for regulatory purposes	22,099	15,903
Securities - segregated for regulatory purposes	11,710	23,071
Securities borrowed	3,630	4,956
Securities purchased under agreements to resell	4,166	792
Receivables from customers	49,954	39,333
Receivables from brokers, dealers and clearing organizations	3,983	1,254
Interest Receivable	108	104
Other assets	16	13
Total financial assets, not measured at fair value	98,884	89,718
Short-term borrowings	425	118
Securities loaned	11,580	9,838
Payable to customers	81,452	75,882
Brokers, dealers and clearing organizations	207	182
Interest Payable	9	6
Total financial liabilities, not measured at fair value	93,673	86,026
Carrying Value
Cash and cash equivalents	3,218	4,292
Cash segregated for regulatory purposes	22,099	15,903
Securities - segregated for regulatory purposes	11,710	23,071
Securities borrowed	3,630	4,956
Securities purchased under agreements to resell	4,166	792
Receivables from customers	49,954	39,333
Receivables from brokers, dealers and clearing organizations	3,983	1,254
Interest Receivable	108	104
Other assets	15	13
Total financial assets, not measured at fair value	98,883	89,718
Short-term borrowings	425	118
Securities loaned	11,580	9,838
Payable to customers	81,452	75,882
Brokers, dealers and clearing organizations	207	182
Interest Payable	9	6
Total financial liabilities, not measured at fair value	93,673	86,026
Level 1 [Member]
Cash and cash equivalents	3,218	4,292
Cash segregated for regulatory purposes	22,099	15,903
Total financial assets, not measured at fair value	25,317	20,195
Short-term borrowings
Securities loaned
Payable to customers
Brokers, dealers and clearing organizations
Interest Payable
Total financial liabilities, not measured at fair value
Level 2 [Member]
Securities - segregated for regulatory purposes	11,710	23,071
Securities borrowed	3,630	4,956
Securities purchased under agreements to resell	4,166	792
Receivables from customers	49,954	39,333
Receivables from brokers, dealers and clearing organizations	3,983	1,254
Interest Receivable	108	104
Other assets	2	2
Total financial assets, not measured at fair value	73,553	69,512
Short-term borrowings	425	118
Securities loaned	11,580	9,838
Payable to customers	81,452	75,882
Brokers, dealers and clearing organizations	207	182
Interest Payable	9	6
Total financial liabilities, not measured at fair value	93,673	86,026
Level 3 [Member]
Cash and cash equivalents
Cash segregated for regulatory purposes
Securities - segregated for regulatory purposes
Securities borrowed
Securities purchased under agreements to resell
Receivables from customers
Receivables from brokers, dealers and clearing organizations
Interest Receivable
Other assets	14	11
Total financial assets, not measured at fair value	14	11
Short-term borrowings
Securities loaned
Payable to customers
Brokers, dealers and clearing organizations
Interest Payable
Total financial liabilities, not measured at fair value

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Financial Assets And Financial Liabilities (Netting of Financial Assets) (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Securities, Segregated For Regulatory Purposes, Purchased Under Agreements To Resell [Abstract]
Gross Amounts of Financial Assets Recognized	[1]	$ 11,710	$ 23,071
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[2]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		11,710	23,071
Amounts Not Offset in the Condensed Consolidated Statement of Financial Condition: Cash or Financial Instruments		(11,710)	(23,071)
Net Amount
Offsetting Securities Borrowed [Abstract]
Gross Amounts of Financial Assets Recognized		3,630	4,956
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[2]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		3,630	4,956
Amounts Not Offset in the Condensed Consolidated Statement of Financial Condition: Cash or Financial Instruments		(3,522)	(4,716)
Net Amount		108	240
Offsetting Securities Purchased under Agreements to Resell [Abstract]
Gross Amounts of Financial Assets Recognized		4,166	792
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[2]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		4,166	792
Amounts Not Offset in the Condensed Consolidated Statement of Financial Condition: Cash or Financial Instruments		(4,166)	(792)
Net Amount
Total [Abstract]
Gross Amounts of Financial Assets Recognized		19,529	28,856
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[2]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		19,529	28,856
Amounts Not Offset in the Condensed Consolidated Statement of Financial Condition: Cash or Financial Instruments		(19,419)	(28,604)
Net Amount		110	252
Options [Member]
Offsetting Financial Instruments Owned, At Fair Value [Abstract]
Gross Amounts of Financial Assets Recognized		22	28
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[2]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		22	28
Amounts Not Offset in the Condensed Consolidated Statement of Financial Condition: Cash or Financial Instruments		(21)	(25)
Net Amount		1	3
Currency Forward Contracts [Member]
Offsetting Financial Instruments Owned, At Fair Value [Abstract]
Gross Amounts of Financial Assets Recognized		1	9
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[2]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		1	9
Amounts Not Offset in the Condensed Consolidated Statement of Financial Condition: Cash or Financial Instruments
Net Amount		$ 1	$ 9

[1] As of June 30, 2021 and December 31, 2020, the Company had $11.7 billion and $23.1 billion, respectively, of securities purchased under agreements to resell that were segregated to satisfy regulatory requirements. These securities are included in “Securities - segregated for regulatory purposes” in the condensed consolidated statements of financial condition.

[2] The Company did not have any balances eligible for netting in accordance with ASC Topic 210-20 at June 30, 2021 and December 31, 2020.

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Financial Assets And Financial Liabilities (Netting of Financial Liabilities) (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Offsetting Securities Loaned [Abstract]
Gross Amounts of Financial Assets Recognized		$ 11,580	$ 9,838
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[1]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		11,580	9,838
Amounts of Liabilities Not Offset in the Condensed Consolidated Statement of Financial Condition (Cash or Financial Instruments)		(11,029)	(9,246)
Net Amount		551	592
Total [Abstract]
Gross Amounts of Financial Assets Recognized		11,621	9,871
Amounts Offset in the Consolidated Statement of Financial Condition	[1]
Net Amounts Presented in the Consolidated Statement of Financial Condition		11,621	9,871
Amounts of Liabilities Not Offset in the Consolidated Statement of Financial Condition (Cash or Financial Instruments)		(11,050)	(9,271)
Net Amount		571	600
Options [Member]
Offsetting Financial Instruments Sold, But Not Yet Purchased, At Fair Value [Abstract]
Gross Amounts of Financial Assets Recognized		25	26
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[1]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		25	26
Amounts of Liabilities Not Offset in the Condensed Consolidated Statement of Financial Condition (Cash or Financial Instruments)		(21)	(25)
Net Amount		4	1
Currency Forward Contracts [Member]
Offsetting Financial Instruments Sold, But Not Yet Purchased, At Fair Value [Abstract]
Gross Amounts of Financial Assets Recognized		16	7
Amounts Offset in the Condensed Consolidated Statement of Financial Condition	[1]
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition		16	7
Amounts of Liabilities Not Offset in the Condensed Consolidated Statement of Financial Condition (Cash or Financial Instruments)
Net Amount		$ 16	$ 7

[1] The Company did not have any balances eligible for netting in accordance with ASC Topic 210-20 at June 30, 2021 and December 31, 2020.

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Financial Assets And Financial Liabilities (Secured Financing Transactions) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities loaned	$ 11,580	$ 9,838
Overnight and Open [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities loaned	11,580	9,838
Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities loaned	11,535	9,811
Common Stock [Member] | Overnight and Open [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities loaned	11,535	9,811
Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities loaned	45	27
Corporate Bonds [Member] | Overnight and Open [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities loaned	$ 45	$ 27

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Collateralized Transactions (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure Collateralized Transactions [Abstract]
Customers receivables	$ 49,954	$ 39,333
Securities purchased under agreement to resell segregated for regulatory purposes	$ 11,700	$ 23,100
Percentage of securities repledged and deposited for customers	75.00%	97.00%

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Collateralized Transactions (Amounts Related to Collateralized Transactions) (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Permitted To Repledge [Member]
Collateralized Transactions [Line Items]
Securities lending transactions		$ 67,033	$ 64,436
Agreements to resell	[1]	15,847	23,859
Customer margin assets		60,892	47,609
Total collateralized transactions		143,772	135,904
Sold Or Repledged [Member]
Collateralized Transactions [Line Items]
Securities lending transactions		5,998	4,859
Agreements to resell	[1]	15,642	23,832
Customer margin assets		16,510	14,182
Total collateralized transactions		$ 38,150	$ 42,873

[1] As of June 30, 2021, $11.7 billion or 75% (as of December 31, 2020, $23.1 billion or 97%) of securities acquired through agreements to resell that are shown as repledged have been deposited in a separate bank account for the exclusive benefit of customers in accordance with SEC Rule 15c3-3.

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Collateralized Transactions (Financial instruments owned and pledged where the counterparty has the right to repledge) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure Collateralized Transactions [Abstract]
Stocks	$ 25	$ 53
U.S. and foreign government securities	44	33
Financial Instruments Owned and Pledged as Collateral - Eligible to be Repledged by Counterparty	$ 69	$ 86

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Revenue From Contracts With Customers (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Receivables	$ 17	$ 13

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Revenue From Contracts With Customers (Disaggregation of Revenue ) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	$ 362	$ 316	$ 830	$ 623
United States [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	216	200	501	397
International [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	146	116	329	226
Commissions [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		307	276	719	545
Market Data Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	20	15	39	28
Risk Exposure Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	7	1	12	5
Payments For Order Flow [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	9	7	19	14
Minimum Activity Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	9	7	16	13
Others [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	$ 10	$ 10	$ 25	$ 18

[1] Based on the location of the subsidiaries in which the revenues are recorded.

[2] Included in other fees and services in the condensed consolidated statements of comprehensive income.

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Other Income (Schedule Of Components Of Other Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income [Abstract]
Principal transactions	$ 123	$ 12	$ 243	$ 22
Gains (losses) from currency diversification strategy, net	(9)	16	(11)	(33)
Other, net	4	(1)	6	7
Other income	$ 118	$ 27	$ 238	$ (4)

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Employee Incentive Plans (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended		170 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	10.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%
Defined Contribution Plan Vesting Period	6 years
401(k) plan contribution expense	$ 3	$ 2
Maximum shares of stock distributable under 2007 Stock Incentive Plan	30,000,000		30,000,000
Shares granted to external directors			29,709
2007 Stock Incentive Plan Compensation Expense	$ 34	$ 29
Estimated Future 2007 Stock Incentive Plan Compensation Expense	$ 32		$ 32
Post employment shares distribution			1,148,603
2007 Stock Incentive Plan (Shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Percentage, description	•10% on the first vesting date, which is on or about May 9 of each year; and •an additional 15% on each of the following six anniversaries of the first vesting, assuming continued employment with the Company and compliance with non-competition and other applicable covenants.
2007 Stock Incentive Plan (Shares) | External Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
2007 Stock Incentive Plan (Shares) | External Director [Member] | Commencing One Year After Grant Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage per year	20.00%

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Employee Incentive Plans (Share Grants And Fair Value) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended				128 Months Ended	164 Months Ended
	Jun. 30, 2021	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2020
Employee Incentive Plans [Abstract]
Shares granted		1,229,177	[1]	1,374,217	1,146,267	24,497,626
Fair Value - Date of Grant		$ 71		$ 65	$ 62	$ 561	$ 71
Shares Granted IPO to Date							28,247,287
Fair Value - Date of Grant IPO to Date							$ 759
Stock Incentive Plan Granted Shares Adjustment	7,034

[1] Stock Incentive Plan number of granted restricted stock units related to 2020 was adjusted by 7,034 additional restricted stock units during the six months ended June 30, 2021.

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Employee Incentive Plans (2007 Stock Incentive Plan, ROI Summary) (Details)	6 Months Ended
	Jun. 30, 2021 shares
Stock Incentive Plan Granted Shares Adjustment	7,034
2007 Stock Incentive Plan (Shares)
Beginning Balance	4,974,355	[1]
Shares Granted
Shares Cancelled	(23,563)
Shares Distributed	(1,210,929)
Ending Balance	3,739,863

[1] Stock Incentive Plan number of granted restricted stock units related to 2020 was adjusted by 7,034 additional restricted stock units during the six months ended June 30, 2021.

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Leases (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($)
Leases [Abstract]
Operating lease, weighted-average remaining lease term	7 years
Operating lease, weighted-average discount rate	4.13%
Right-of-use assets obtained in exchange for operating lease liabilities	$ 7

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Leases (Supplemental Balance Sheet Information Related To Operating Leases) (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Right-of-use assets	[1]	$ 96	$ 101
Lease liabilities	[1]	$ 116	$ 120

[1] Right-of-use assets are included in other assets and lease liabilities are included in accounts payable, accrued expenses and other liabilities in the Company’s condensed consolidated statements of financial condition.

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Leases (Lease Cost) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease cost	$ 7	$ 6	$ 14	$ 12
Variable lease cost	1	1	2	2
Total lease cost	$ 8	$ 7	$ 16	$ 14

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Leases (Undiscounted Cash Flows of Operating Lease) (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
2021 (remaining)		$ 12
2022		21
2023		18
2024		15
2025		15
2026		14
Thereafter		41
Total undiscounted operating lease payments		136
Less: imputed interest		(20)
Present value of operating lease liabilities	[1]	$ 116	$ 120

[1] Right-of-use assets are included in other assets and lease liabilities are included in accounts payable, accrued expenses and other liabilities in the Company’s condensed consolidated statements of financial condition.

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Commitments, Contingencies and Guarantees (Narrative) (Details) - USD ($)	Aug. 10, 2020	Jun. 30, 2021
Commitment And Contingencies [Line Items]
Guarantees, Fair Value Disclosure		$ 0
FINRA [Member]
Commitment And Contingencies [Line Items]
Settlement, penalties agreed to paid	$ 15,000,000
SEC [Member]
Commitment And Contingencies [Line Items]
Settlement, penalties agreed to paid	11,500,000
CFTC [Member]
Commitment And Contingencies [Line Items]
Settlement, penalties agreed to paid	11,500,000
Disgorgement [Member]
Commitment And Contingencies [Line Items]
Settlement, penalties agreed to paid	$ 700,000

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Geographic Information (Geographic Table) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Total net revenues	$ 754	$ 539	$ 1,647	$ 1,071
Income before income taxes	541	222	1,180	530
United States [Member]
Segment Reporting Information [Line Items]
Total net revenues	565	390	1,216	763
Income before income taxes	473	174	1,029	418
International [Member]
Segment Reporting Information [Line Items]
Total net revenues	189	149	431	308
Income before income taxes	$ 68	$ 48	$ 151	$ 112

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Regulatory Requirements (Narrative) (Details) $ in Millions	Jun. 30, 2021 USD ($)
Regulatory Requirements [Abstract]
Excess	$ 6,185

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Regulatory Requirements (Summary Of Capital, Capital Requirements And Excess Capital) (Details) $ in Millions	Jun. 30, 2021 USD ($)
Net Capital / Eligible Equity	$ 7,951
Requirement	1,766
Excess	6,185
IB LLC [Member]
Net Capital / Eligible Equity	4,831
Requirement	912
Excess	3,919
IBKRFS [Member]
Net Capital / Eligible Equity	611
Requirement	11
Excess	600
IBHK [Member]
Net Capital / Eligible Equity	788
Requirement	330
Excess	458
Other Regulated Operating Companies [Member]
Net Capital / Eligible Equity	1,721
Requirement	513
Excess	$ 1,208

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Related Party Transactions (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Due from Related Parties - Customers	$ 32	$ 283
Due to Related Parties - Customers	938	999
Short-term borrowings	425	118
Directors, Officers, And Affiliates [Member]
Related Party Transaction [Line Items]
Short-term borrowings	$ 22	$ 16

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Senior Notes Payable (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Aug. 09, 2021	Jun. 30, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Issue price per note		$ 1
Redemption price percent		100.00%
Issuance of senior notes		$ 1,237,000
Redemptions of senior notes		$ 1,081,000
Weighted average interest rate		1.00%
Notes payable		$ 252,000	$ 96,000
Interest rate per annum		1.00%	1.00%
Interest expense on short-term borrowings		$ 1,000
Subsequent Event [Member]
Short-term Debt [Line Items]
Issuance of senior notes	$ 192,000
Subsequent Event [Member] | Senior Notes Outstanding At June 30, 2021 [Member]
Short-term Debt [Line Items]
Redemptions of senior notes	252,000
Subsequent Event [Member] | Senior Notes Issued During July 1, 2021 Through August 9, 2021 [Member]
Short-term Debt [Line Items]
Redemptions of senior notes	$ 192,000