Interactive Brokers Group, Inc.

Our customers primarily fall into two groups based on services provided, both of which take advantage of our low commissions as well as our best price execution. Cleared customers, the large majority of our customers, use our trade execution and clearing services, low financing rates, high interest paid (when benchmark rates are sufficiently above zero) and, under our IBKR Lite SM offering, commission-free trades. Non-cleared customers, including trading firms that provide liquidity in our ATS, use our trade execution services while clearing with another prime broker or a custodian bank.

We currently service approximately 4.4 million cleared customer accounts and have customers residing in over 200 countries and territories around the world. Our target customer is one who requires the latest in trading technology and worldwide access, and who expects low overall transaction and financing costs and market rate interest on uninvested cash balances. Our customers are mainly comprised of individuals, trading desk professionals, retail brokers, hedge funds, mutual funds, financial advisors, proprietary trading firms, and introducing brokers and banks that require global access. No single customer represented more than 2% of our commissions in 2025.