10-K: Interactive Brokers Reports Strong 2025 Growth, S&P 500 Inclusion

Interactive Brokers Group, Inc. reported a significant increase in net revenues and diluted EPS for 2025, driven by robust customer trading volumes and net interest income, alongside its inclusion in the S&P 500 Index.

Summary

• Net revenues for the year ended December 31, 2025, increased by 20% to $6,205 million, up from $5,185 million in the prior year.
• Income before income taxes rose by 29% to $4,771 million in 2025, compared to $3,695 million in 2024.
• Diluted earnings per share (EPS) increased by 28.3% to $2.22 in 2025, from $1.73 in 2024.
• Adjusted diluted EPS grew by 24.4% to $2.19 in 2025, up from $1.76 in 2024.
• Net interest income increased by 13% to $3,563 million, driven by higher average customer margin loans and credit balances, and stronger securities lending activity.
• Commission revenue surged by 27% to $2,149 million, fueled by a 38% increase in customer stock share volumes, 26% in options, and 12% in futures.
• Total Daily Average Revenue Trades (DARTs) for cleared and execution-only customers increased by 40% to 3.7 million.
• Non-interest expenses decreased by 4% to $1,434 million, primarily due to lower general and administrative expenses and customer bad debt.
• The company's currency diversification strategy positively impacted comprehensive earnings by $387 million in 2025.
• Total equity increased by 23% to $20.5 billion as of December 31, 2025.
• Aggregate excess regulatory capital for all operating subsidiaries stood at $14.1 billion as of December 31, 2025, with all subsidiaries in compliance.

Sentiment

Score: 8

Explanation: StockSavvy.ai views this as a very positive filing, reflecting strong financial performance, significant growth in key metrics, and strategic achievements like S&P 500 inclusion, despite a slight dip in net interest margin due to rate changes.

Positives

• Net revenues increased by 20% to $6,205 million in 2025, demonstrating strong top-line growth.
• Income before income taxes grew by 29% to $4,771 million, indicating enhanced profitability.
• Diluted EPS increased significantly by 28.3% to $2.22, reflecting strong shareholder value creation.
• Net interest income rose by 13% to $3,563 million, driven by increased customer margin loans and credit balances, and robust securities lending.
• Commission revenue jumped by 27% to $2,149 million, supported by substantial increases in customer trading volumes across stocks, options, and futures.
• Total DARTs increased by 40% to 3.7 million, highlighting strong customer engagement and platform activity.
• Non-interest expenses decreased by 4% to $1,434 million, improving operational efficiency and pretax profit margin to 77%.
• Customer bad debt expense significantly decreased by 93% to $1 million, indicating improved risk management or more stable market conditions.
• Inclusion in the S&P 500 Index on August 28, 2025, is a significant milestone recognizing financial performance, profitability, and market capitalization.
• The company's currency diversification strategy contributed a positive $387 million to comprehensive earnings in 2025.
• Quarterly cash dividend increased from $0.0625 to $0.08 per share in April 2025, signaling confidence in future performance.

Negatives

• Net interest margin (NIM) declined from 2.35% in 2024 to 2.08% in 2025, primarily due to lower benchmark interest rates.
• Average commission per commissionable order for cleared customers decreased by 6% to $2.68, attributed to smaller order sizes and lower average commissions in certain products.
• Risk exposure fees decreased by $20 million, as customers exhibited more cautious risk-taking behavior.
• Employee compensation and benefits expenses increased by 9% to $626 million, due to staffing increases, inflation, and higher social insurance taxes.

Risks

• Future sales of common stock in the public market could lower the stock price and dilute ownership.
• Control by Mr. Thomas Peterffy of a majority of the combined voting power may give rise to conflicts of interest and discourage a change of control.
• Dependence on IBG LLC to distribute cash to pay tax liabilities and other expenses.
• Obligation to pay Holdings 85% of tax savings from tax basis step-up, which could be as much as $44.6 billion.
• Certain provisions in the amended and restated certificate of incorporation may prevent efforts by stockholders to change direction or management (e.g., no stockholder-called special meetings, no director removal without cause).
• Macroeconomic, geopolitical, and other challenges and uncertainties (e.g., interest rates, inflation, policy changes) could negatively impact the business.
• The business could be harmed by a systemic market event.
• Damage to reputation could harm the business due to issues like conflicts of interest, legal/regulatory non-compliance, ethical issues, money laundering, cybersecurity, data privacy, and employee misconduct.
• The impact of a public health emergency may have a material adverse impact on business and results of operations.
• Future success depends on the ability to respond to demand for new services, products, and technologies amidst rapid technological change and AI developments.
• The loss of key employees would materially adversely affect the business.
• Dividends on common stock may not always be paid.
• Intense competition in direct market access clearing and non-clearing brokerage operations from various types of competitors.
• Potential losses as a result of clearing and execution activities, including customer defaults and clearing member credit risk.
• Exposure to risks associated with international operations, such as political/economic instability, regulatory changes, and exchange rate fluctuations.
• Counterparty risk from defaults by parties with whom the company does business.
• Future acquisitions may result in significant transaction expenses, integration risks, and inability to profitably operate.
• Revenues and profitability depend on trading volume and interest rate levels, making them prone to significant fluctuations and difficult to predict.
• Material trading losses from market making activities due to price changes, lack of liquidity, or market making obligations.
• Reduced spreads in securities pricing, levels of trading activity, and trading through market makers could harm the business.
• Losses in market making activities in the event of failures of the proprietary pricing model.
• Valuation of financial instruments held may result in large and occasionally anomalous swings in value and earnings.
• Exposure to losses due to lack of perfect information when trading with others who have different information.
• Rules governing designated market makers may require unprofitable trades or prevent profitable ones.
• Risk management policies and procedures may not be fully effective in mitigating all types of risks.
• Future efforts to sell shares or raise additional capital may be delayed or prohibited by regulations (e.g., FINRA Rule 1017).
• Regulatory and legal uncertainties could harm the business due to extensive and changing requirements, and potential sanctions.
• Risks relating to litigation and potential securities laws liability.
• Heightened regulatory and legislative requirements in the U.S. and internationally have increased compliance, regulatory, and other risks and costs.
• Emerging legal and regulatory risks related to prediction markets (ForecastEx).
• Potential for additional tax expense or liabilities due to complex tax laws, Pillar Two Framework, or IRS challenges.
• Inability to protect intellectual property rights or being prevented from using necessary intellectual property.
• Reliance on computer software could cause great financial harm in the event of disruption or corruption.
• Inability to maintain technological superiority in the industry, especially with rapid changes and AI developments.
• Lack of fully redundant systems; system failures could harm the business.
• Failure of third-party systems on which the company relies could adversely affect the business.
• Internet-related issues may reduce or slow the growth in the use of services.
• Could be the target of a cyber-attack or experience a cybersecurity incident, causing reputational or monetary damages.
• Subject to stringent and complex data privacy rules; failure to comply could lead to financial loss, litigation, and liabilities.
• Reliance on third-party Cryptocurrency Service Providers (CSPs) for trading and custody services.
• A data breach at a CSP may result in irreversible losses for customers and adversely affect the business.
• Technical issues with CSPs could result in disruption or interruption of customer access to their accounts.
• Changes in laws and regulations regarding cryptocurrency may negatively impact the ability to enable customers to buy, hold, and sell cryptocurrencies.

Future Outlook

The company anticipates continued fluctuations in retail participation in equity markets, potential impacts from market center consolidation on its SmartRouting software, and intensifying competition among broker-dealers. Changes in benchmark interest rates, fiscal/monetary policy, and new regulations (especially concerning AI and information security) are expected to influence future financial conditions. International operations remain subject to geopolitical and economic instability, including U.S.-China tensions and the war in Ukraine. The company plans to continue focusing on technology infrastructure initiatives to enhance its competitive position and will evaluate strategic acquisitions opportunistically.

Management Comments

• Our inclusion in the S&P 500 represents a significant milestone in recognition of our financial performance, sustained profitability, market capitalization, technology-driven business model, consistent growth in client accounts and assets, and our position as a leading global automated brokerage platform serving individual and institutional customers worldwide.
• Nearly five decades of developing our automated trading platforms and automating many middleand 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.
• We believe the attractive rates we pay on customer cash are among the highest in the industry and are another important feature that draws customers to our platform.
• Our focus on automation has allowed us to maintain a relatively lean staff as we continue to grow.
• Management believes that the resolution of pending legal and regulatory 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.

Industry Context

StockSavvy.ai notes that Interactive Brokers' strong performance in 2025, characterized by significant revenue and EPS growth, outpaced broader market trends in some areas, particularly in customer trading volumes. The company's inclusion in the S&P 500 Index reflects its growing market capitalization and established position as a technology-driven global brokerage. While the industry benefited from moderating inflation and central bank easing, leading to higher market indices and increased trading activity, Interactive Brokers' proprietary technology and low-cost model appear to have enabled it to capture a larger share of this growth, especially among sophisticated and active investors. The decline in net interest margin, despite overall net interest income growth, is a common industry challenge in a falling interest rate environment, but the company's ability to attract customer cash with competitive rates helps mitigate this. The increased market volatility (VIX up 22%) also provided a favorable backdrop for brokerage activity.

Comparison to Industry Standards

• Interactive Brokers' average commission per cleared commissionable order of $2.68 is among the lowest in the industry, significantly undercutting traditional brokers and competing effectively with other online platforms, reinforcing its position as a low-cost provider.
• The 40% increase in Total Customer DARTs (Daily Average Revenue Trades) to 3.7 million demonstrates a higher growth rate in customer engagement compared to the overall U.S. listed cash equities average daily volume increase of 45% and options volume increase of 25%, suggesting market share gains or stronger engagement from its customer base.
• The company's pretax profit margin of 77% (adjusted 77%) is exceptionally high for the brokerage industry, indicating superior operational efficiency and cost management, especially when compared to more traditional or less automated competitors.
• The growth in customer equity by 37% to $779.9 billion and total accounts by 32% to 4.4 million suggests strong client acquisition and asset retention, outperforming many peers in a competitive environment.
• The company's extensive global reach, operating on over 170 electronic exchanges in 40 countries and 29 currencies, sets a high benchmark for international access and product diversity, surpassing many regionally focused competitors.

Management Changes

Corporate Governance

Legal Proceedings

• The Trading Technologies patent infringement matter concluded on June 18, 2025, with the company paying the judgment amount, including interest and costs, after the Supreme Court denied Harris Brumfield's petition for rehearing.
• A class action lawsuit regarding alleged flaws in the computerized system for liquidating margin-deficient customer accounts reached a settlement in principle on August 15, 2025. A class action settlement agreement was signed on January 20, 2026, and received preliminary approval on January 27, 2026, with a fairness hearing scheduled for June 17, 2026.
• IB LLC settled a sanctions compliance matter with OFAC on July 15, 2025, paying a penalty of $11.8 million for violations predominantly concerning the facilitation of transactions in sanctioned countries or by sanctioned entities.

Related Party Transactions

• Mr. Thomas Peterffy, the founder and Chairman, and his affiliates beneficially own approximately 91.6% of the economic interests and all of the voting interests in IBG Holdings LLC (Holdings), which in turn owns approximately 73.7% of the combined voting power of all classes of the company's voting stock.
• The company is required to pay Holdings 85% of the tax savings realized from tax basis increases resulting from the IPO and subsequent redemptions of Holdings membership interests, with a potential tax basis increase of up to $44.6 billion.
• Receivables from directors, officers, and their affiliates increased to $171 million as of December 31, 2025, from $44 million in 2024.
• Payables to directors, officers, and their affiliates decreased to $1,249 million as of December 31, 2025, from $1,320 million in 2024.
• Mr. Peterffy's affiliate funded certain advertising campaigns for IB LLC, and Mr. Peterffy made non-cash capital contributions of $3 million to IB LLC in 2025 to fund these campaigns, which were allocated 100% to income attributable to non-controlling interest.

Stakeholder Impact

• Shareholders: Benefited from a four-for-one stock split, increased quarterly dividends, and strong diluted EPS growth. Inclusion in the S&P 500 is expected to broaden the institutional investor base and enhance stock liquidity.
• Customers: Benefit from continued investment in proprietary technology, low transaction costs, diverse product offerings, and enhanced trading platforms. The Insured Bank Deposit Sweep Program offers increased FDIC coverage. However, average commission per order decreased, and risk exposure fees were lower due to cautious behavior.
• Employees: The company remains committed to employee development, offering learning tools, a mentorship program, and a stock incentive plan that aligns interests with long-term performance. Employee compensation and benefits increased, and staffing expanded.
• Regulatory Authorities: The company continues to face heightened regulatory scrutiny, as evidenced by the OFAC settlement, and incurs increasing compliance costs. Ongoing legal proceedings, though some are concluding, highlight continuous regulatory engagement.
• IBG Holdings LLC (Holdings): Continues to hold a significant noncontrolling interest and receives payments under the Tax Receivable Agreement, aligning its financial interests with the company's performance.

Next Steps

• Continue evaluating system capacity, resiliency, and operational readiness for disaster preparedness in 2026.
• Continue monitoring developments in emerging technologies, including AI, for potential enhancements.
• Continue to add staff worldwide to support business expansion.
• Continue to grant awards on or about December 31 of each year to eligible participants under the Stock Incentive Plan.
• Continue to evaluate the potential impact of the Pillar Two Framework and similar legislation on financial statements.
• Fairness hearing for the class action settlement is scheduled for June 17, 2026.
• Company intends to pay a cash dividend of $0.08 per share on March 13, 2026, to stockholders of record as of February 27, 2026.

Key Dates

Recommendation

Interactive Brokers demonstrated exceptional financial performance in 2025, with robust growth in net revenues, income before taxes, and diluted EPS. The significant increase in customer trading volumes and accounts, coupled with improved operational efficiency leading to a higher pretax profit margin, underscores the strength of its technology-driven business model. The inclusion in the S&P 500 Index is a strong validation of its market position and is likely to attract further institutional investment. While interest rate declines impacted net interest margin, the company's ability to grow net interest income and manage expenses effectively, along with a reduced customer bad debt, points to resilient profitability. The dividend increase further signals management's confidence. These factors collectively suggest a strong investment opportunity.

Keywords

Brokerage, Financial Services, Online Trading, SEC Filing, 10-K, Interactive Brokers, IBKR, Stock Split, S&P 500, Net Interest Income, Commission Revenue, Trading Volumes, DARTs, Cryptocurrency, Risk Management, Regulatory Compliance, Fintech, Global Broker, Automated Trading, Capital Markets