WARREN BUFFETT
Buffett made an enormous fortune from astute investments, particularly through his company Berkshire Hathaway, of which he is the largest shareholder and CEO.
Berkshire Hathaway has about $2 billion in holdings.
With an estimated net worth of about $46 billion, the 79-year-old Buffett, is often called the 'Sage of Omaha'.
As a child, Buffett was a paper boy for the Washington Post and attempted to cover more than one route at the same time. Showing a spontaneous talent for making money, Buffett also started earning that early by collecting and selling lost golf balls.
He even started playing the stock market with one of his sisters at 11. At 12, he was betting on horses and by high school he started a business (pinball machines) with a friend, which earned him $50 a week.
Not only did he own a business by the time he graduated, he also had bought himself 40 acres of farmland in Nebraska.
Buffett was strongly influenced by economist Benjamin Graham's theory that it is wise to look for stocks of companies which are undervalued as they will probably prosper with a little time.
Buffett started his investment company, the Buffett Partnership, at 25, using $5,000 of his own funds and collecting $100,000 from friends and family. One of the smartest moves made by Buffett's company at that time was to invest in American Express.
In June 2006, Buffett made a commitment to give away his fortune to charity, with 85 per cent of it ($30 billion) going to the Bill and Melinda Gates Foundation. Buffett's donation was the largest act of charitable giving in the world's history.