Interactive Brokers Group, Inc. is an investment holding company that engages in broker or dealer and proprietary trading businesses. It operates through the following segments: electronic brokerage and market making. The electronic brokerage business is a broker that directly enters the market and provides services to traditional brokers and major broker clients. This department provides customers with advanced order management, trade execution and portfolio management platforms. The market making segment provides continuous quoting and quoting for over one million securities and futures products listed on global electronic exchanges. The company was founded by Thomas Pechy Peterffy in 1977 and is headquartered in Greenwich, Connecticut.