Warren Buffett is an American business magnate, investor, and philanthropist. He began investing at age 11 and is known as one of the world's most successful investors. Buffett was born in 1930 in Omaha, Nebraska and currently serves as the chairman and CEO of Berkshire Hathaway. He follows a value investing strategy, focusing on companies with understandable business models and consistent profitability. Buffett is also a major philanthropist, having pledged to give away 99% of his fortune to charitable causes.