Interactive Brokers Group 10-K 2024-12-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

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

For the year ended December 31**, 2024**

Commission File Number: 001-33440

INTERACTIVE BROKERS GROUP, INC.

(Exact name of registrant as specified in its charter)

One Pickwick Plaza

Greenwich**,** Connecticut 06830

(Address of principal executive office)

(203) 618-5800

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark whether the registrant is a well-known seasoned issuer, as defined in Rule 405 of the securities act. Yes x No o

Indicate by check mark whether the registrant is not required to file reports pursuant to Section 13 or 15(d) of the act. Yes o No x

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

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

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 has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its

audit report. Yes x No o

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. o

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). 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 x

The aggregate market value of the voting and non-voting common equity stock held by non-affiliates of the registrant was approximately 12,885,708,490 computed by reference to the $122.60 closing sale price of the common stock on the Nasdaq Global Select Market, on June 28, 2024, the last business day of the registrant’s most recently completed second fiscal quarter.

As of February 21, 2025, there were 108,931,614 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.

Documents Incorporated by Reference: Portions of Registrant’s definitive proxy statement for its 2025 annual meeting of shareholders are incorporated by reference in Part III of this Form 10-K.

ANNUAL REPORT ON FORM 10**-**K FOR THE YEAR ENDED DECEMBER 31, 2024

Table of Contents

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**CAUTIONARY NOTE REGARDING FORWARD-**LOOKING STATEMENTS

We have included or incorporated by reference in this Annual Report on Form 10-K and from time to time our management may make statements that may constitute “forward-looking statements” within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are not historical facts, but instead represent only our beliefs regarding future events, many of which, by their nature, are inherently uncertain and outside our control. These statements include statements other than historical information or statements of current condition and may relate to our future plans and objectives and results, among other things and may also include our belief regarding the effect of various legal proceedings, as set forth under “Legal Proceedings and Regulatory Matters” in Part I, Item 3 of this Annual Report on Form 10-K, as well as statements about the objectives and effectiveness of our liquidity policies, statements about trends in or growth opportunities for our businesses, included in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of this Annual Report on Form 10-K. By identifying these statements for you in this manner, we are alerting you to the possibility that our actual results may differ, possibly materially, from the anticipated results indicated in these forward-looking statements. Important factors that could cause actual results to differ from those in the forward-looking statements include, among others, those discussed below and under “Risk Factors” in Part I, Item 1A of this Annual Report on Form 10-K and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of this Annual Report on Form 10-K.

Factors that could cause actual results to differ materially from any future results, expressed or implied, in these forward-looking statements include, but are not limited to, the following:

general economic conditions in the markets where we operate;

increased industry competition and downward pressures on electronic brokerage commissions and on bid/offer spreads in the remaining market making business we operate;

risks inherent to the electronic brokerage and market making businesses;

implied versus actual price volatility levels of the products in which we continue to make markets;

the general level of interest rates;

failure to protect or enforce our intellectual property rights in our proprietary technology;

our ability to keep up with rapid technological change;

system failures, cyber security threats and other disruptions;

non-performance of third-party vendors;

conflicts of interest and other risks due to our ownership and holding company structure;

the loss of key executives and failure to recruit and retain qualified personnel;

the risks associated with the expansion of our business;

our possible inability to integrate any businesses we acquire;

the impact of accounting standards issued but not yet adopted;

compliance with laws and regulations, including those relating to the securities industry;

the impact of a public health emergency; and

other factors discussed under “Risk Factors” in Part I, Item 1A of this Annual Report on Form 10-K or elsewhere in this Annual Report on Form 10-K.

We undertake no obligation to publicly update or revise any forward-looking statements to reflect events or circumstances that may arise after the date of this Annual Report on Form 10-K.

PART I

Overview

Interactive Brokers Group, Inc. (“IBG, Inc.” or the “Company”) is an automated global electronic broker. We custody and service accounts for hedge and mutual funds, exchange-traded funds (“ETFs”), registered investment advisors, proprietary trading groups, introducing brokers and individual investors. We specialize in routing orders and executing and processing trades in stocks, options, futures, foreign exchange instruments (“forex”), bonds, mutual funds, ETFs, precious metals, and forecast contracts on more than 160 electronic exchanges and market centers in 36 countries and 28 currencies around the world. In addition, our customers can use our trading platform to trade certain cryptocurrencies through third-party cryptocurrency service providers that execute, clear and custody the cryptocurrencies. In the United States of America (“U.S.”), we conduct our business primarily from our headquarters in Greenwich, Connecticut and from Chicago, Illinois. Abroad, we conduct our business through offices located in Canada, the United Kingdom, Ireland, Switzerland, Hungary, India, China (Hong Kong and Shanghai), Japan, Singapore and Australia. As of December 31, 2024, we had 2,998 employees worldwide.

IBG, Inc. is a holding company whose primary asset is the ownership of approximately 25.8% of the membership interests of IBG LLC, the current holding company for our businesses. IBG, Inc. is the sole managing member of IBG LLC.

When we use the terms “we,” “us,” “our,” and “IBKR,” we mean IBG, Inc. and its subsidiaries (including IBG LLC). Unless otherwise indicated, the terms “common stock” and “IBKR shares” refer to the Class A common stock of IBG, Inc.

We trace our roots to the market making business founded by our Chairman, Mr. Thomas Peterffy, on the floor of the American Stock Exchange in 1977. Since our inception, we have focused on developing proprietary software to automate broker-dealer functions. We have been a pioneer in developing and applying technology as a financial intermediary to increase liquidity and transparency in the capital markets in which we operate. The proliferation of electronic exchanges and market centers has allowed us to integrate our software with an increasing number of trading venues, creating automatically functioning, computerized platforms that require minimal human intervention. Over four decades of developing our automated trading platforms and automating many middle- and back-office functions have allowed us to become one of the lowest cost providers of broker-dealer services and to significantly increase the volume of trades we handle.

Available Information

Our internet address is www.interactivebrokers.com and the investor relations section of our website is located at www.interactivebrokers.com/ir. We make available free of charge, on or through the investor relations section of our website, this Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as well as proxy statements, registration statements, prospectus supplements and Section 16 filings for our directors and officers, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the U.S. Securities and Exchange Commission (“SEC”). The SEC maintains an internet site, www.sec.gov, that contains annual, quarterly and current reports, proxy and information statements and other information that issuers file electronically with the SEC. Our electronic SEC filings are made available to the public on the SEC’s internet site. In addition, posted on our website are our Bylaws, our Amended and Restated Certificate of Incorporation, charters for the Audit Committee, Compensation Committee and Nominating and Corporate Governance Committee of our Board of Directors, our Accounting Matters Complaint Policy, our Whistle Blower Hotline, our Corporate Governance Guidelines and our Code of Business Conduct and Ethics governing our directors, officers and employees. Within the time periods required by SEC and the Nasdaq Stock Market LLC’s Global Select Market (“Nasdaq”), we will post on our website any amendment to the Code of Business Conduct and Ethics and any waiver applicable to any executive officer, director or senior financial officer. In addition, our website includes information concerning purchases and sales of our equity securities by our executive officers and directors, as well as disclosure relating to certain non-GAAP financial measures, if any, (as defined in Regulation G) promulgated under the Securities Act of 1933, as amended (the “Securities Act”) and the Securities Exchange Act of 1934, as amended (the “Exchange Act”) that we may make public orally, telephonically, by webcast, by broadcast or by similar means from time to time.

Our Investor Relations Department can be contacted at Interactive Brokers Group, Inc., Two Pickwick Plaza, Greenwich, Connecticut 06830, Attn: Investor Relations, e-mail: investor-relations@interactivebrokers.com.

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Our Organizational Structure and Overview of Recapitalization Transactions

The graphic below illustrates our current ownership structure and reflects current ownership percentages. The graphic below does not display the subsidiaries of IBG LLC.

Our primary assets are our ownership of approximately 25.8% of the membership interests of IBG LLC, the current holding company for our businesses, and our controlling interest and related contractual rights as the sole managing member of IBG LLC. The remaining approximately 74.2% of IBG LLC membership interests are held by IBG Holdings LLC (“Holdings”), a holding company that is owned directly and indirectly by our founder and Chairman, Mr. Thomas Peterffy and his affiliates, management and other employees of IBG LLC, and certain other members. The IBG LLC membership interests held by Holdings will be subject to purchase by us over time in connection with offerings by us of shares of our common stock.

The table below presents the amount of IBG LLC membership interests held by IBG, Inc. and Holdings as of December 31, 2024.

Purchases of IBG LLC membership interests, held by Holdings, by the Company are governed by the exchange agreement among us, IBG LLC, Holdings and the historical members of IBG LLC, (the “Exchange Agreement”), a copy of which was filed as an exhibit to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2009 and filed with the SEC on November 9, 2009. The Exchange Agreement, as amended June 6, 2012, provides that the Company may facilitate the redemption by Holdings of interests held by its members through the issuance of shares of common stock through a public offering or directly to Holdings in exchange for the interests in IBG LLC being sold by Holdings. The common stock received from the Company is either distributed by Holdings to certain members in redemption of their Holdings interests or sold on behalf of such members in open market transactions, with the proceeds of such sales distributed by Holdings to certain members in redemption of their Holdings interests. From 2011 through 2024, the Company issued 40,444,445 shares of common stock (with a fair value of $2.0 billion) to Holdings in exchange for an equivalent number of shares of member interests in IBG LLC.

Nature of Operations

As an electronic broker, we execute, clear and settle trades globally for both institutional an

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We face a variety of risks that are substantial and inherent in our businesses, including market, liquidity, credit, operational, legal and regulatory. In addition to the risks identified elsewhere in this Annual Report on Form 10-K, the following is a summary of the risk factors that apply to our business results of operations and financial condition. Please read the detailed discussion of these risks following the summary.

Risks Related to Our Company Structure

Future sales of our common stock in the public market could lower our stock price, and any additional capital raised by us through the sale of equity or convertible securities may dilute your ownership in us.

Control by Mr. Thomas Peterffy of a majority of the combined voting power of our common stock may give rise to conflicts of interests and could discourage a change of control that other stockholders may favor, which could negatively affect our stock price, and adversely affect stockholders in other ways.

We depend on IBG LLC to distribute cash to us in amounts sufficient to pay our tax liabilities and other expenses.

We are required to pay Holdings for the benefit relating to additional tax depreciation or amortization deductions we claim as a result of the tax basis step-up our subsidiaries received in connection with our initial public offering (“IPO”) and certain subsequent redemptions of Holdings membership interests.

Certain provisions in our amended and restated certificate of incorporation may prevent efforts by our stockholders to change our direction or management.

Risks Related to Our Business

Macroeconomic, geopolitical and other challenges and uncertainties could have a negative impact on our business.

Our business could be harmed by a systemic market event.

Damage to our reputation could harm our business.

The impact of a public health emergency may have a material adverse impact on our business and results of operations.

Our future success will depend on our response to the demand for new services, products and technologies.

The loss of our key employees would materially adversely affect our business.

We may not pay dividends on our common stock at any time in the foreseeable future.

Our direct market access clearing and non-clearing brokerage operations face intense competition.

We are subject to potential losses as a result of our clearing and execution activities.

We are exposed to risks associated with our international operations.

We are subject to counterparty risk whereby defaults by parties with whom we do business can have an adverse effect on our business, financial condition and results of operations.

Any future acquisitions may result in significant transaction expenses, integration and consolidation risks and risks associated with entering new markets, and we may be unable to profitably operate our consolidated company.

Because our revenues and profitability depend on trading volume and interest rate levels, they are prone to significant fluctuations and are difficult to predict.

We may incur material trading losses from our market making activities.

Reduced spreads in securities pricing, levels of trading activity and trading through market makers could harm our business.

We may incur losses in our market making activities in the event of failures of our proprietary pricing model.

The valuation of the financial instruments we hold may result in large and occasionally anomalous swings in the value of our positions and in our earnings in any period.

We are exposed to losses due to lack of perfect information.

Rules governing designated market makers may require us to make unprofitable trades or prevent us from making profitable trades.

Our risk management policies and procedures may not be fully effective in mitigating our risk exposure in all market environments or against all types of risks.

Risks Related to Laws, Regulations and Litigation

Our future efforts to sell shares or raise additional capital may be delayed or prohibited by regulations.

Regulatory and legal uncertainties could harm our business.

We are subject to risks relating to litigation and potential securities laws liability.

Heightened regulatory and legislative requirements and changes in the U.S. and globally have increased our compliance, regulatory and other risks and costs.

 We may incur additional tax expense or become subject to additional tax liabilities.

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Risks Related to Our Intellectual Property, Technology, Cybersecurity and Data Privacy

We may not be able to protect our intellectual property rights or may be prevented from using intellectual property necessary for our business.

Our reliance on our computer software could cause us great financial harm in the event of any disruption or corruption of our computer software. We may experience technology failures while developing our software.

We depend on our proprietary technology, and our future results may be impacted if we cannot maintain technological superiority in our industry.

We do not have fully redundant systems. System failures could harm our business.

Failure of third-party systems on which we rely could adversely affect our business.

Internet-related issues may reduce or slow the growth in the use of our services in the future.

We could be the target of a cyber-attack or experience a cybersecurity incident that impairs internal systems, degrades services we provide to customers, or results in a data compromise, causing reputational or monetary damages as a consequence.

We are subject to stringent and complex data privacy rules. Failure to comply with these rules could have an adverse effect on our business, financial condition, and results of operation.

Risks Related t****o Cryptocurrency

We rely on third-party Cryptocurrency Service Providers (“CSPs”) to provide our customers the ability to access cryptocurrency trading and custody services.

A data breach at the CSP may result in irreversible losses, which would adversely affect our customers and our business.

We may encounter technical issues which would result in disruption or interruption of our customers’ access to their CSP accounts.

[Changes in laws and regulations regardin

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None.

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We are a global financial services firm, with a longstanding commitment to providing a reliable and secure trading environment for our customers.

Technology is at the core of our business, with customers, exchanges, clearing houses, counterparties, and third-party service providers interacting with our systems and applications on an ongoing basis. As a consequence, we are subject to significant cybersecurity risks. Moreover, such risks have been increasing over time, due to the growing sophistication of cyber threat actors, geo-political instability, and advances in technology, such as AI, which are known to have been misused in cyber-attacks.

As part of our overall risk management framework, our cybersecurity program is designed to identify, assess, and manage cyber risks. The program involves risk assessments, implementation of security measures, and ongoing monitoring of systems and networks. We continually evaluate the current threat landscape to identify material risks arising from new and evolving cybersecurity threats.

Management and Board Oversight of Cybersecurity Risks

The Company’s management, including the Company’s Executive Vice President of Technology and Chief Information Security Officer (“CISO”), are responsible for assessing and managing material risks from cybersecurity threats. Members of Company management possess relevant expertise in various disciplines that are key to effectively managing such risks.

The Company’s management, including through its oversight of the Company’s policies and procedures regarding cybersecurity, is actively involved in the prevention, detection, mitigation, and remediation of cybersecurity incidents impacting or with the potential to impact the Company. Management’s oversight is augmented through the Company’s Enterprise Risk Management Framework, which includes risk and control assessments related to the Company’s cybersecurity program. Additionally, the Company’s Internal Audit Group periodically audits aspects of the Company’s cybersecurity program and reports the results of such audits to the Board’s Audit Committee, and an external audit firm conducts an annual SOC 2 attestation of the Company’s information security controls.

If a cybersecurity incident occurs, incident response procedures are in place to ensure that the occurrence is appropriately reported to the CISO and senior management. Where necessary, business continuity plans are mobilized to minimize disruption to business operations. The Company has established the Cyber Materiality Committee (“CMC”), whose purpose is to review cybersecurity incidents escalated to it by our Threat & Incident Management Team and determine whether they are material and thus require a disclosure on Form 8-K. CMC’s membership includes the Chief Executive Officer (“CEO”), the Chief Financial Officer, the Executive Vice President of Technology, the CISO, and other senior leaders.

Our Board of Directors receives periodic updates on cybersecurity matters and the overall state of our cybersecurity program from our CEO (based on consultation with our CISO and other senior members of our Information Security and/or Technology teams).

Assessment of Cybersecurity Risk

The potential impact of risks from cybersecurity threats to the Company is assessed on an ongoing basis. During the reporting period and through the issuance of this Annual Report on Form 10-K, the Company has not identified any risks from cybersecurity threats, including as a result of previous cybersecurity incidents, that the Company believes have materially affected, or are reasonably likely to materially affect the Company, including its business strategy, operational results, and financial condition. For additional information about cybersecurity risks, see Part I, Item 1A, “Risk Factors” in this Annual Report on Form 10-K.

Our headquarters are located in Greenwich, Connecticut. We lease office and data center facilities in 34 cities throughout the world where we conduct our operations as set forth below. We believe our present facilities, together with our current options to extend lease terms, are adequate for our current needs.

The table below presents certain information with respect to our leased facilities as of December 31, 2024.

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The securities and commodities industry is highly regulated and many aspects of our business involve substantial risk of liability. In past years, there has been an increasing incidence of litigation involving the brokerage industry, including class action suits that generally seek substantial damages, including in some cases punitive damages. Compliance and trading problems that are reported to federal, state and provincial regulators, exchanges or other self-regulatory organizations by dissatisfied customers are investigated by such regulatory bodies, and, if pursued by such regulatory body or such customers, may rise to the level of arbitration or disciplinary action. We are also subject to periodic regulatory audits and inspections.

Like other brokerage firms, we have been named as a defendant in lawsuits and from time to time we have been threatened with, or named as a defendant in arbitrations and administrative proceedings. We may in the future become involved in additional litigation or regulatory proceedings in the ordinary course of our business, including litigation or regulatory proceedings that could be material to our business.

For more information regarding pending and threatened legal actions and proceedings see Note 14 - “Commitments, Contingencies, and Guarantees” to the consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Pending Regulatory Inquiries

Our businesses are heavily regulated by state, federal and foreign regulatory agencies as well as numerous exchanges and self-regulatory organizations. Most of our companies are regulated under some or all of the following: state securities laws, U.S. and foreign securities, commodities and financial services laws and the rules of the more than 160 exchanges, market centers and self-regulatory organizations of which one or more of our companies may be members. In the current era of heightened regulatory scrutiny of financial institutions, we have incurred increased compliance costs, along with the industry as a whole. Increased regulation also creates increased barriers to entry. We have built and continue to build human and automated infrastructure in light of increasing regulatory scrutiny, which provides us with a possible advantage over potential newcomers to the business.

We receive many regulatory inquiries each year in addition to being subject to frequent regulatory examinations. The great majority of these inquiries do not lead to fines or any further action against us. We are generally the subject of regulatory inquiries regarding subjects including, but not limited to: audit trail reporting, trade reporting, best execution and order execution procedures, display of market data, short sales, margin lending, exchange fees charged to customers, anti-money laundering or potentially manipulative trading by customers, sanctions compliance, procedures for accounts managed by independent financial advisors or referred by third parties, technology development practices, registration, record-keeping, business continuity planning, cybersecurity and other topics of recent regulatory interest. The Company has procedures for evaluating whether potential regulatory fines are probable, estimable and material and for updating its contingency reserves and disclosures accordingly. In the current climate, we expect to pay significant and increasing regulatory fines on various topics on an ongoing basis, as other regulated financial services businesses do. The amount of any fines, and when and if they will be incurred, typically is impossible to predict given the nature of the regulatory process.

‎ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

PA****RT II

Market Information for Common Stock

Interactive Brokers Group Inc.’s Class A common stock trades under the symbol “IBKR” on Nasdaq. There is no public trading market for our Class B common stock, which is held by Holdings.

Holders of Record

As of February 19, 2025, there were 39 holders of record, which does not reflect those shares held beneficially or those shares held in “street” name. Accordingly, the number of beneficial owners of our common stock exceeds this number.

Dividends and Other Restrictions

We currently intend to pay quarterly dividends of $0.25 per share to our common stockholders for the foreseeable future. For more information regarding dividends see Note 4 – “Equity and Earnings per Share” to the consolidated financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Stockholder Return Performance Graph

The graph below compares cumulative total stockholder return on our common stock, the S&P 500 Index and the Nasdaq Financial-100 Index from December 31, 2019 to December 31, 2024. The comparison assumes $100 was invested on December 31, 2019 in our common stock and each of the foregoing indices and assumes reinvestment of dividends before consideration of income taxes.

The Nasdaq Financial-100 Index includes 100 of the largest domestic and international financial securities listed on The Nasdaq Stock Market based on market capitalization. They include companies classified according to the Industry Classification Benchmark as Financials, which are included within the Nasdaq Bank, Nasdaq Insurance, and Nasdaq Other Finance Indexes.

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The S&P 500 Index includes 500 large cap common stocks actively traded in the U.S. The stocks included in the S&P 500 are those of large publicly held companies that trade on either of the two largest American stock markets, the New York Stock Exchange and Nasdaq.

The stock performance depicted in the graph above is not to be relied upon as indicative of future performance. The stock performance graph shall not be deemed to be incorporated by reference into any of our filings under the Securities Act or the Exchange Act, except to the extent that we specifically incorporate the same by reference, nor shall it be deemed to be “soliciting material” or to be “filed” with the SEC or subject to Regulations 14A or 14C or to the liabilities of Section 18 of the Exchange Act.

Use of Proceeds

On July 26, 2023, the Company filed a Prospectus Supplement on Form 424B (File Number 333-273451) with the SEC to re-register up to 630,000 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. The Company has authorized a total of 1,000,000 shares of common stock to be issued under these promotions. From 2019 through 2024, the Company issued 620,000 shares to IBG LLC for distribution to eligible customers of certain of its subsidiaries.

On July 25, 2024, the Company filed a Prospectus Supplement on Form 424B5 (File Number 333-273451) with the SEC to issue 333,000 shares of common stock (with a fair value of $39 million) in exchange for an equivalent number of shares of member interests in IBG LLC, in accordance with the Exchange Agreement.

As a consequence of redemption transactions in accordance with the Exchange Agreement, distribution of shares to customers under one or more promotions, and distribution of shares to employees pursuant to the Company’s amended 2007 Stock Incentive Plan, IBG, Inc.’s interest in IBG LLC has increased to approximately 25.8%, with Holdings owning the remaining 74.2% as of December 31, 2024. 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 91.4% as of December 31, 2024. See Note 4 – “Equity and Earnings per Share” and Note 10 – “Employee Incentive Plans” to the financial statements in Part II, Item 8 of this Annual Report on Form 10-K.

Securities Authorized for Issuance under Equity Compensation Plans

The table below presents information about shares of common stock available for future awards under all the Company’s equity compensation plans as of December 31, 2024. The Company has not made grants of common stock outside of its equity compensation plans.

(1)Amount represents restricted stock units available for future issuance of grants under the Company’s amended 2007 Stock Incentive Plan (the “Plan”). On April 20, 2023, the Company’s stockholders approved an additional 10,000,000 shares to be distributed under the Plan. This increased the total number of shares available to be distributed under the Plan to 40,000,000 shares, from 30,000,000 shares.

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The following discussion should be read in conjunction with the audited consolidated financial statements and the related notes in Part II, Item 8, of this Annual Report on Form 10-K. 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 Part I, Item 1A of this Annual Report on Form 10-K.

Business Overview

We are an automated global electronic broker. We custody and service accounts for hedge and mutual funds, ETFs, registered investment advisors, 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, ETFs and precious metals on more than 160 electronic exchanges and market centers in 36 countries and 28 currencies around the world. In addition, our customers can use our trading platform to trade certain cryptocurrencies through third-party cryptocurrency service providers that execute, clear and custody the cryptocurrencies. In August 2024, we began offering trading in forecast contracts, which are event-based contracts traded on ForecastEx, a CFTC-registered exchange and clearinghouse we established.

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 ever-growing complexity of multiple market centers across diverse geographies provides us with ongoing opportunities 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 has allowed us to integrate our software with an increasing number of trading venues – as well as with market data sources, securities lending platforms and regulatory reporting facilities – creating one automatically functioning, computerized platform that requires minimal human intervention.

Our customer base is diverse with respect to geography and type. Currently, approximately 83% of our customers reside outside the U.S. in over 200 countries and territories, and over 85% of new customers come from outside the U.S. Approximately 55% of our customers’ equity is in institutional accounts such as hedge funds, financial advisors, proprietary trading firms 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.

Business Environment

In 2024, most world equities markets, including the U.S., Canada, Europe, Japan, and Australia, continued to reach all-time highs. The S&P 500 index led major world indices with a 23% year-over-year gain. The dominance of a small number of technology stocks (the so-called “Magnificent 7”) diminished somewhat, with these stocks accounting for half of the S&P’s index’s gains in the current year, down from 63% in the prior year. Inflationary pressures eased gradually over the course of 2024 and, as a result, central banks in most countries cut their policy rates. Lower rates helped moderate economic conditions toward a “soft landing” for global economies, despite an ongoing backdrop of geopolitical uncertainty. Lower rates and the expectation of further rate reductions also contributed to higher market levels and volumes, with individual investors continuing their engagement with the securities markets, particularly in options and equities.

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

Global trading volumes. Worldwide, equities volumes at most major trading venues increased in the current year, while major market indices reached all-time highs in the U.S., Canada, Europe, U.K., Germany, Japan, and Australia. In the U.S., according to industry data, average daily volume in exchange-listed equity-based options increased by 10%, listed cash equities volume by 10%, and futures by 9%, compared to 2023. Options trading volumes have risen with the growing popularity of shorter-dated options contracts. In futures markets, volumes increased across all product segments, particularly in commodities such as the metals, energy and agriculture sectors, as investors sought to mitigate their exposure to ongoing economic and geopolitical uncertainties.

These factors led to mixed but generally positive results across our major product types. Our customer options, equities, and futures volumes were up 32%, 22%, and 4%, respectively, while foreign exchange volumes declined 9%, compared to the prior year.

Note that while U.S. options, futures and 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 7 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®’’), declined by 8%, from an average of 16.8 in 2023 to 15.6 in the current year. Volatility levels remain below the levels reached in 2020 through 2022, as the world economic outlook has improved and recession fears have waned.

In general, higher volatility typically enhances our performance because it often correlates positively with customer trading activity across product types.

Interest Rates. After holding rates steady since July 2023, the U.S. Federal Reserve cut the benchmark federal funds rate three times in 2024 (in September, November and December), by a cumulative 100 basis points. After a period of inversion, the U.S. Treasury yield curve began to revert toward a historically typical upward slope by year end, with long-term rates becoming higher than short-term rates. In most countries with developed financial markets, benchmark interest rates also declined over the course of the year as central banks’ concerns over inflation abated.

Lower U.S. benchmark rates reduce the interest we earn on our segregated cash, the majority of which is invested in short-term U.S. government securities and related instruments. Higher short-term rates, and uncertainty over future U.S. Federal Reserve rate policy, have led us to maintain a short duration portfolio, substantially all of which matured within three months at December 31, 2024, to more closely match our asset and liability maturities on our interest-sensitive assets. Further, our margin balances are tied to benchmark rates, so lower rates also limit the interest we earn 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 feature 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 on their qualified cash balances when the federal funds effective rate is above 0.50%, which it has been since May 2022. With

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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 non-U.S. subsidiaries, our income and equity are exposed to fluctuations in foreign exchange rates. For example, our non-U.S. subsidiaries are exposed to foreign exchange risks as described below:

Some of our non-U.S. subsidiaries support customer transactions in financial instruments, carry bank balances, and borrow and lend securities in various currencies in their regular course of business. At the end of each accounting period, these non-U.S. subsidiaries’ assets and liabilities are revalued into their respective functional currencies for presentation in their financial statements. The resulting foreign currency gains or losses are reported in their income statements and, as translated into U.S. dollars for U.S. GAAP purposes, in our consolidated statements of comprehensive income, as a component of “Other income.”

These non-U.S. subsidiaries’ financial statements are presented in their respective functional currencies, as noted above. For U.S. GAAP purposes, at the end of each accounting period, each non-U.S. subsidiary’s equity 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 consolidated statements of financial condition and consolidated statements of comprehensive income.

By periodically converting currency balances into functional currency, we substantially reduce the foreign currency exposures for each of these non-U.S. subsidiaries, which minimizes the impact of exchange rate changes to its income statement. However, historically, we

have taken the approach of not hedging our consolidated foreign currency exposures to the U.S. dollar, 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.

Instead, 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, a basket of currencies. Our risk management systems incorporate cash forex to hedge our currency exposure at little or no cost. Currency spot positions entered into as part of our currency diversification strategy are held by the parent holding company, IBG LLC.

The U.S. dollar value of the GLOBAL decreased 1.45% as of December 31, 2024 compared to December 31, 2023. As of December 31, 2024, approximately 23% of our equity was denominated in currencies other than the U.S. dollar.

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

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

Interest Rate Risk

We had no variable-rate debt outstanding as of December 31, 2024.

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, if any, 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. 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, although given the current interest rate environment, at this time substantially all such investments mature within three months. 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 at 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. Our margin balances are priced to a benchmark rate plus a spread, with a minimum charge of 0.75% in U.S. dollars and most foreign currencies.

Based on customer balances and investments outstanding as of December 31, 2024, and assuming reinvestment of maturing instruments in instruments of short-term duration, an increase of 0.25% over current U.S. dollar interest rate levels would increase our net interest income by approximately $64 million on an annualized basis, assuming the full effect of reinvestment at higher rates. A 0.25% increase in all the relevant non-U.S. dollar benchmark rates would increase our net interest income by approximately $24 million on an annualized basis. 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. If such securities were sold prior to maturity, the loss would be realized and the proceeds reinvested at prevailing higher interest rates.

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We also face the potential for reduced net interest income from customer deposits and margin loans if benchmark rates were to fall. Based on customer balances and investments outstanding as of December 31, 2024, and assuming reinvestment of maturing instruments in instruments of short-term duration, a decrease in U.S. dollar interest rates of 0.25% would decrease our net interest income by approximately $64 million on an annualized basis, assuming the full effect of reinvestment at lower rates. A 0.25% decrease in all the relevant non-U.S. dollar benchmark rates would decrease our net interest income by approximately $22 million on an annualized basis.

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 is impacted by interest rates. The amount of such risk cannot be quantified, however, the current low level of market making positions does not indicate a material potential 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 current low level of market making positions does not indicate a material potential 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 if collateral requirements are not sufficient to fully cover losses that customers may incur and those customers fail to satisfy their obligations. As of December 31, 2024, we had $64.4 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 potentially 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.

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 Market Risk 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 a 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 the 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 99th 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 five scenarios each of which represents a parallel shift of the U.S. Treasury yield curve. The scenarios are shifts of +/−100 and +/−200 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 +/−50 basis points.

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VaR and Stress Test Measures

(1)The product categories displayed in the table as “Trading” reflect activities undertaken in the Company's market making activities. ‎

The “Non-trading” category reflects investment activities and foreign currency exposures of the Company's non-market making subsidiaries (i.e., its brokerage subsidiaries and information technology subsidiaries). This category also includes corporate activities in foreign exchange designed to achieve the Company's currency diversification strategy.

The average and high VaR amounts are based on the four quarter ending calculations performed in 2024.

(2)Equities and currencies held for market making purposes are combined because these products are part of an integrated, hedged market making portfolio, on which the risk is measured using VaR.

(3)The Non-Trading – Fixed Income, Other category contains primarily U.S. government securities held in segregated safekeeping accounts for the exclusive benefit of our brokerage customers, on which the risk is measured using a stress test analysis.

Index to Consolidated Financial Statements

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of

Interactive Brokers Group, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated statements of financial condition of Interactive Brokers Group, Inc. and subsidiaries (the "Company") as of December 31, 2024 and 2023, the related consolidated statements of comprehensive income, cash flows and changes in equity, for each of the three years in the period ended December 31, 2024, and the related (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2024, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 27, 2025, expressed an unqualified opinion on the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Income taxes — Refer to Notes 2 and 11 to the financial statements

Critical Audit Matter Description

The Company’s income tax expense, deferred tax assets and liabilities are based on enacted tax laws and reflects management's best assessment of estimated future taxes to be paid. The Company is subject to income taxes in both the U.S. and numerous foreign jurisdictions. The Company has deferred tax assets and liabilities that arose from temporary differences between tax and financial statement recognition of underlying assets and liabilities. Determining income tax expense and deferred tax assets and liabilities requires significant management judgments and estimates.

We identified management’s calculation of income tax expense and deferred tax assets and liabilities as a critical audit matter because of the significant judgments and estimates management makes to determine these amounts. Performing audit procedures to evaluate the reasonableness of management’s interpretation of tax law in a multitude of jurisdictions across the Company’s global operations, and its estimate of the associated income tax expense and deferred tax assets and liabilities, required a high degree of auditor judgment and increased effort, including the need to involve our income tax specialists.

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How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to income tax expense and deferred tax assets and liabilities included, among others, the following which were performed with the assistance of our income tax specialists:

-Testing the operating effectiveness of controls over income tax balances and deferred tax assets and liabilities.

-Evaluating the Company’s income tax expense calculation, including testing the appropriateness of income tax rates applied and of income allocations among the taxing jurisdictions, and the mathematical accuracy of the calculation.

-Evaluating the Company’s analyses supporting its conclusions as to the recognition and measurement of deferred tax assets and liabilities.

-Evaluating management’s assessment of the Company’s ability to utilize the net deferred tax assets in future years.

/s/ Deloitte & Touche LLP

New York, New York

February 27, 2025

We have served as the Company's auditor since 1990.

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Interactive Brokers Group, Inc. and Subsidiaries

Consolidated Statements of Financial Condition

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None.

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

The Company maintains disclosure controls and procedures that are designed to provide reasonable assurance that information required to be disclosed in the reports it files or submits under the Securities Exchange Act of 1934 (the “Exchange Act”) is recorded, processed, summarized and reported accurately and within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is accumulated and communicated to management, including the Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), as appropriate, to allow timely decisions regarding required disclosure.

Under the supervision and with the participation of our management, including our CEO and our CFO, we conducted an evaluation of our disclosure controls and procedures; as such term is defined under Exchange Act Rule 13a-15(e). Based on this evaluation, our CEO and our CFO concluded that our disclosure controls and procedures were effective as of the end of the period covered by this annual report.

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting. IBG, Inc.’s internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles.

Our internal control over financial reporting includes those policies and procedures that pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of IBG, Inc.; provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of IBG, Inc.’s management and directors; and provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on our financial statements.

Our Accounting Policy Committee (the “APC”) provides a robust framework for the design and implementation of all relevant controls. The APC is comprised of six (6) experienced subject matter experts from within the Company’s accounting and regulatory disciplines, and includes the CFO and the Chief Accounting Officer. The APC is responsible for assessing the effects of complex transactions and related accounting guidance on the Company’s financial statements and to report the results of its assessments to management and to the Audit Committee. The APC’s mandate includes review and approval of the adoption and implementation of accounting guidance (new or newly applicable) by the Company.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management, including our CEO and our CFO, assessed the effectiveness of IBG, Inc.’s internal control over financial reporting as of December 31, 2024. In making this assessment, management used the criteria set forth in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). Based on management’s assessment and those criteria, management concluded that IBG, Inc. maintained effective internal control over financial reporting as of December 31, 2024.

The effectiveness of the Company’s internal control over financial reporting as of December 31, 2024, has been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report, which appears herein.

Changes to Internal Control over Financial Reporting

No changes to our internal control over financial reporting for the year ended December 31, 2024 have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of

Interactive Brokers Group, Inc.

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Interactive Brokers Group, Inc. and subsidiaries (the “Company”) as of December 31, 2024, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated statements as of and for the year ended December 31, 2024, of the Company and our report dated February 27, 2025, expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed 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. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Deloitte & Touche LLP

New York, New York

February 27, 2025

During the quarter ended December 31, 2024, none of our directors or officers adopted, modified or terminated a contract, instruction or written plan for the purchase or sale of our securities intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or a “non-Rule 10b5-1 trading arrangement”, as defined in Item 408(c) of Regulation S-K.

Not applicable.

PART III

Information related to the Company’s directors and nominees under the following captions in the Company’s Proxy Statement is incorporated by reference herein:

• “Item 1 - Election of Directors”

• “Item 1 - Election of Directors - Board Meetings and Committees”

Executive Officers and Directors of Interactive Brokers Group, Inc.

Thomas Peterffy – Mr. Peterffy, our founder, has been the Chairman of our Board since November 2006 and Chief Executive Officer from November 2006 to September 2019. Mr. Peterffy has been at the forefront of applying computer technology to automate trading and brokerage functions since he emigrated from Hungary to the United States in 1965. In 1977, after purchasing a seat on the American Stock Exchange and trading as an individual market maker in equity options, Mr. Peterffy was among the first to apply a computerized mathematical model to continuously value equity option prices. By 1986, Mr. Peterffy developed and employed a fully integrated, automated market making system for stocks, options and futures. As this pioneering system extended around the globe, online brokerage functions were added and, in 1993, Interactive Brokers was formed.

Earl H. Nemser – Mr. Nemser has been our Vice Chairman since November 2006. Mr. Nemser has been the Vice Chairman of IBG LLC and its predecessors since 1988 and serves as a director and/or officer for various subsidiaries of IBG LLC. Mr. Nemser serves as an Independent Advisor to the law firm Dechert LLP. Mr. Nemser served as Special Counsel to Dechert LLP from January 2005 to October 2018. Prior to such time, Mr. Nemser served as Partner at the law firms of Swidler Berlin Shereff Friedman, LLP from 1995 to December 2004 and Cadwalader, Wickersham & Taft LLP prior to 1995. Mr. Nemser received a Bachelor of Arts degree in economics from New York University in 1967 and a Juris Doctor, magna cum laude, from Boston University School of Law in 1970.

Milan Galik – Mr. Galik joined us in 1990 as a software developer and has served as the Chief Executive Officer of the Company since October 2019. Mr. Galik has also served as President of the Company and IBG LLC since October 2014. Mr. Galik served as Senior Vice President, Software Development of IBG LLC from October 2003 to October 2014. In addition, Mr. Galik has served as Vice President of IBKR Securities Services LLC since April 1998 and served as a member of the board of directors of the Boston Options Exchange from October 2013 to May 2023. Mr. Galik received a Master of Science degree in electrical engineering from the Technical University of Budapest in 1990.

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Paul J. Brody – Mr. Brody has been our Chief Financial Officer, Treasurer and Secretary since November 2006. Mr. Brody joined the Company in 1987 and has served as Chief Financial Officer of IBG LLC since December 2003. Mr. Brody serves as a director and/or officer for various of our subsidiaries. From 2005 to 2012, Mr. Brody served as a director, and for a portion of the time as member Vice Chairman, of The Options Clearing Corporation, of which Interactive Brokers LLC and IBKR Securities Services LLC are members. Mr. Brody also served as a director of Quadriserv Inc., an electronic securities lending platform provider, from 2009 to 2015. Mr. Brody received a Bachelor of Arts degree in economics from Cornell University in 1982.

Thomas A. Frank – Dr. Frank joined us in 1985 and has served since July 1999 as Executive Vice President of Interactive Brokers LLC. Dr. Frank served as Interactive Brokers LLC’s Chief Information Officer from July 1999 to April 2024. In addition, Dr. Frank has served as Vice President of IBKR Securities Services LLC since December 1990. Dr. Frank has served as a director of The Options Clearing Corporation, since 2015. Dr. Frank received a Ph.D. in physics from the Massachusetts Institute of Technology in 1985.

Lawrence E. Harris – Dr. Harris has been a director since July 2007 and lead independent director since July 2012. Dr. Harris is a professor of Finance and Business Economics at the University of Southern California, where he holds the Fred V. Keenan Chair in Finance at the Marshall School of Business. Dr. Harris also serves as trustee of the Davis Fundamental ETF Trust and as the research coordinator of the Institute for Quantitative Research in Finance. Dr. Harris formerly served as Chief Economist of the U.S. Securities and Exchange Commission. Dr. Harris earned his Ph.D. in Economics from the University of Chicago and is a CFA charterholder. Dr. Harris is an expert in the economics of securities market microstructure. Dr. Harris has written extensively about trading rules, transaction costs, index markets, and market regulation. Dr. Harris is also the author of the widely respected textbook Trading and Exchanges: Market Microstructure for Practitioners.

William Peterffy – Mr. William Peterffy has been a director since April 2020, following one year as a Board observer. Mr. William Peterffy is the Chair of the Investment Committee of the Peterffy Foundation where he oversees its investment portfolio. Mr. William Peterffy is also a member of the Board of Trustees of the Collective Heritage Institute (commonly known as Bioneers) and focuses his efforts on sustainability issues. Mr. William Peterffy is the Chief Executive Officer and founder of One Small Planet. Mr. William Peterffy also worked as an investment analyst within the hedge fund industry. Mr. William Peterffy is the son of our Chairman, Mr. Thomas Peterffy.

Nicole Yuen – Ms. Yuen has been a director since July 2020. Ms. Yuen has had a long-standing career in investment banking in Asia for over two decades and is widely credited for her pioneering efforts in internationalizing China’s capital market. Ms. Yuen was formerly Managing Director, Head of Equities, North Asia and Vice Chairman, Greater China for Credit Suisse from 2012 to 2018. Before joining Credit Suisse, Ms. Yuen worked at UBS for 18 years holding various leadership positions, across investment banking and securities divisions in Asia. Ms. Yuen also served as a member of the Listing Committee of the China Securities Regulatory Commission. Prior to investment banking, Ms. Yuen was a partner at Clifford Chance, Hong Kong, after having worked as a lawyer in the U.K., the U.S. and The Netherlands. Ms. Yuen now also sits on the board of Asia Dragon Trust plc as an independent non-executive director.

Jill Bright – Ms. Bright has been a director since April 2022. Ms. Bright has over three decades of experience in human resources management and administration. Ms. Bright is an operating executive at Crestview Partners focused on human capital management and also serves as Chief Transformation Officer for one of their portfolio companies. Ms. Bright has served as Chief Administrative Officer for LionTree LLC as well as for Condé Nast, led Human Resources & Administration for Sotheby’s and spent over five years in Human Resources at American Express. Ms. Bright is currently a Board Director and Chair of the Compensation Committee for WideOpenWest (WOW) and also serves as a Board Director and Chair of the Human Resource Committee for Pursuit (PRSU). Ms. Bright completed her MBA at New York University's Stern School of Business.

Richard Repetto – Mr. Repetto has been a director since January 2024. Mr. Repetto is a renowned research analyst with over 25 years of experience covering electronic trading and financial technology companies. Mr. Repetto retired in June 2023 as Managing Director and Senior Research Analyst at Piper Sandler. Mr. Repetto is currently employed at Cornerstone Financial Technology Management, a hedge fund focused on using advanced technology in the investment decision making process for financial technology stocks. Throughout his successful career, Mr. Repetto received many accolades, including the Financial Times/StarMine “Global Analyst of the Year” from the Financial Times in 2012.

Code of Ethics

IBG, Inc.’s Code of Ethics and Business Conduct applies to all directors, officers and employees, including its Chief Executive Officer, its Chief Financial Officer and its Chief Accounting Officer. Information relating to our Code of Business Conduct and Ethics is included in Part I, Item 1 of this Annual Report on Form 10-K. We will post any amendments to the Code of Ethics and Business Conduct, and any waivers that are required to be disclosed by the rules of either the SEC or Nasdaq on the investor relations section of our website located at www.interactivebrokers.com/ir.

Insider Trading Policy

We have adopted an Insider Trading Policy that governs the purchase, sale and/or other dispositions of our securities by our directors, officers and employees, as well as their immediate family members and entities owned or controlled by them, that is designed to promote compliance with insider trading laws, rules and regulations.

Information relating to director and executive officer compensation under the following captions in the Company’s Proxy Statement is incorporated by reference herein:

• “Compensation of Directors”

• “Executive Compensation”

Other information relating to security ownership of certain beneficial owners and management is set forth under the caption “Beneficial Ownership of Directors, Executive Officers and Owners of More than Five Percent” in the Company’s Proxy Statement and such information is incorporated by reference herein.

Information regarding certain relationships and related transactions under the following caption in the Company’s Proxy Statement and such information is incorporated by reference herein:

• “Certain Relationships and Related Transactions”

Information regarding principal accounting fees and under the following caption in the Company’s Proxy Statement is incorporated by reference herein:

• “Item 2 - Ratification of Appointment of Independent Registered Public Accounting Firm”

PA****RT IV

Documents filed as part of this report

1.Consolidated Financial Statements

The consolidated financial statements required to be filed in the Annual Report on Form 10-K are listed on page 59 hereof and in Part II, Item 8 hereof.

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2.Exhibits

** Previously filed; incorporated herein by reference.

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

• Attached as Exhibit 101 to this Annual Report on Form 10-K for the annual period ended December 31, 2024, are the following materials formatted in iXBRL (Inline eXtensible Business Reporting Language) (i) the Consolidated Statements of Financial Condition, (ii) the Consolidated Statements of Comprehensive Income, (iii) the Consolidated Statements of Cash Flows, (iv) the Consolidated Statements of Changes in Stockholders’ Equity and (v) Notes to the Consolidated Financial Statements tagged in detail levels 1-4. ‎

None.

SIGNA****TURES

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.

Date: February 27, 2025

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