Interesting article about Thomas Peterffy, number 16 on the list (pdf): http://www.iinews.com/site/pdfs/IIMag_InteractiveBrokers_Nov_2005.pdf http://www.iinews

Interesting article about Thomas Peterffy, number 16 on the list (pdf): http://www.iinews.com/site/pdfs/IIMag_InteractiveBrokers_Nov_2005.pdf http://www.iinews.com/site/pdfs/IIMag_InteractiveBrokers_Nov... From the Business Week piece on him: "According to a November 2005 profile in Institutional Investor, Peterffy wrote computer code in his head while trading during the day, then went back to the office to apply computer models to trading. The early use of computers made him a pioneer in the field."