Senate Banking Hearing On Securities, Insurance And Investment

Thomas Peterffy, chief executive officer of Greenwich-based Interactive Brokers, appears in this file photo. His company, which backed out of talks to buy assets from MF Global Holdings Ltd., bought 8 million shares in the futures broker as its stock plunged. Photographer: Andrew Harrer/Bloomberg *** Local Caption *** Thomas Peterffy

Thomas Peterffy, chief executive officer of Greenwich-based Interactive Brokers, appears in this file photo. His company, which backed out of talks to buy assets from MF Global Holdings Ltd., bought 8 million shares in the futures broker as its stock plunged. Photographer: Andrew Harrer/Bloomberg *** Local Caption *** Thomas Peterffy