Interactive Brokers LLC (IB) is an American multinational brokerage firm. It operates the largest electronic trading platform in the U.S. by number of daily average revenue trades. The company brokers stocks, options, futures, EFPs, futures options, forex, bonds, and funds.
The company is headquartered in Greenwich, Connecticut and has offices in four cities. It is the largest subsidiary of the brokerage group Interactive Brokers Group, Inc., which was founded by Chairman Thomas Peterffy, an ear...