Interactive Brokers Group, Inc. IBKR

What this company does

It custodies and services accounts for hedge and mutual funds, exchange-traded funds, registered investment advisors, proprietary trading groups, introducing brokers and individual investors. It specializes in routing orders and executing and processing trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds, ETFs, precious metals, and forecast contracts on more than 170 electronic exchanges and market centers in 40 countries and 29 currencies around the world. It has grown to approximately 4.4 million institutional and individual brokerage customers. In the United States it conducts its business primarily from its headquarters in Greenwich, Connecticut and from Chicago, Illinois, and abroad through offices located in Canada, the United Kingdom, Ireland, Switzerland, Hungary, Dubai, India, China (Hong Kong and Shanghai), Japan, Singapore and Australia. As of December 31, 2025, it had 3,182 employees in 24 cities across 16 countries. No single customer represented more than 2% of its commissions in 2025. The company traces its roots to the market making business founded by its Chairman, Mr. Thomas Peterffy, on the floor of the American Stock Exchange in 1977.

Written from the business description in Interactive Brokers Group, Inc.'s annual report to the U.S. Securities and Exchange Commission, filed 27 February 2026. Every sentence was checked against that document before publication.