Warren Buffett has cemented his position as a financial legend over his long investing career. Since he assumed the role of Chief Executive Officer at Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B), Buffett has delivered incredible returns of 3,787,464% -- or nearly 20% compounded annually. Buffett's success can be attributed to a few factors, including his astute investment strategy and surrounding himself with intelligent individuals like longtime partner Charlie Munger.