2. Warren Buffett
Warren Buffett, who is worth $67 billion, is a businessman, investor and philanthropist. He was named the most successful investor of the 20th century. Buffett is the chairman, CEO and largest shareholder of Berkshire Hathaway and is consistently ranked among the world’s wealthiest people. Buffett is noted for his frugal ways and has pledged to give away 99% of his fortune to philanthropic causes.