Thomas Peterffy

Thomas Peterffy is the founder, chairman, and largest shareholder of Interactive Brokers, the pioneering electronic brokerage firm that revolutionized how the world trades securities. Born in 1944 in Budapest, Hungary, Peterffy immigrated to the United States in 1965 with virtually no money and speaking almost no English. He taught himself computer programming, and his brilliant insight — that computers could trade securities faster and more efficiently than humans — would transform the global financial markets forever.

Peterffy is widely regarded as the father of electronic trading. In the 1970s and 1980s, he built some of the first computerized trading systems, literally sneaking handheld computers onto the trading floor of the American Stock Exchange when the exchange still required hand signals. His company, Timber Hill, became one of the most successful electronic market makers in the world, and he went on to found Interactive Brokers in 1993. The platform offered retail and institutional investors unprecedented access to global markets at a fraction of the cost of traditional brokers.

Interactive Brokers under Peterffy's leadership has consistently offered the lowest-cost trading in the industry, with access to 150 markets in 33 countries from a single unified platform. The firm processes over two million trades per day and is renowned for its technology, low margin rates, and commitment to serving sophisticated investors. Peterffy's journey from penniless immigrant to billionaire pioneer of electronic trading stands as one of the greatest American success stories of the modern era.