54. Charles Schwab
A pioneer of low-cost investing for the masses, Schwab got into the discount brokerage business in 1971. Today Charles Schwab Corp. has $3.12 trillion in client assets and manages corporate retirement plans. Schwab, who was diagnosed with dyslexia when he was 47, struggled in reading-heavy classes but excelled in areas with numbers, like math and economics. His Charles & Helen Schwab Foundation supports education initiatives and helps children with disabilities.