Warren Buffett

Chairman and CEO of Berkshire Hathaway and widely regarded as the most successful investor in history, with a track record spanning more than six decades. A student of Benjamin Graham, Buffett refined value investing into a philosophy of buying great businesses at reasonable prices and holding them essentially forever. His annual shareholder letters are considered required reading in the investment world, and his folksy wisdom -- "Be fearful when others are greedy, and greedy when others are fearful" -- has guided generations of investors.