Warren Buffett, born on August 30, 1930, is an American investor, businessman, and philanthropist widely known as the "Oracle of Omaha". He is celebrated as one of the most successful investors in the world. Buffett demonstrated an aptitude for business and investment from a young age, buying his first stock at age 11. He studied under legendary value investor Benjamin Graham at Columbia University, shaping his investment philosophy.
Buffett is the chairman and former CEO of Berkshire Hathaway, a conglomerate holding company with interests in diverse sectors such as insurance (Geico), manufacturing (Duracell), and consumer goods (Dairy Queen). Through Berkshire Hathaway, Buffett acquired some of the most prominent businesses in the U.S. As of January 2026, his estimated net worth was $148.9 billion, ranking him among the wealthiest individuals globally. Buffett has promised to donate over 99% of his wealth to philanthropic causes, having already given away nearly $65 billion, largely through the Gates Foundation and his children's foundations. In late 2025, Buffett retired as CEO of Berkshire Hathaway. Recently, Berkshire Hathaway sold its entire stake in the Chinese electric vehicle company BYD.