A nickname for Warren Buffett, who is arguably one of the greatest investors of all time. He is called the "Oracle of Omaha" because his investment picks and comments on the market are very closely followed by the investment community, and he lives and works in Omaha, Nebraska. Taobiz explains Oracle Of Omaha Warren Buffett is one of the richest men in the world. He built his fortune using a simple yet powerful investment strategy. His investments are long-term positions, accomplished by the purchase of strong companies that are trading well below their intrinsic value. Some of his most well-known investments include Coca-Cola and Gillette.