Warren Edward Buffett is an American investor and philanthropist, widely recognized as the chairman and former CEO of the conglomerate Berkshire Hathaway. As one of the best-known investors globally, he has accumulated a massive fortune from his business and investment success, earning him the monikers "Oracle" or "Sage" of Omaha. As of January 2026, Forbes estimated his net worth at US$148.9 billion, making him the ninth-richest person in the world.