6. Warren Buffett
Warren Buffett is one of the most successful investors of all time and known as the “Oracle of Omaha”. He runs the company Berkshire Hathaway that is a multinational conglomerate company. Berkshire Hathaway owns more than 60 companies including restaurant chain Dairy Queen and battery maker Duracell. Buffet is 90 and has a net worth of $109.5 billion.