Warren Eward Buffett (born August 30, 1930, in Omaha, Nebraska) is an American investor, businessman and philanthropist. He is regarded as one of the world's greatest stock market investors, and is the largest shareholder and CEO of Berkshire Hathaway. With an estimated net worth of around US$62 billion, he was ranked by Forbes as the richest person in the world as of February 11, 2008.