Charles Thomas Munger is an American businessman, investor, and philanthropist. He is vice chairman of Berkshire Hathaway, the conglomerate controlled by Warren Buffett; Buffett has described Munger as his closest partner and right-hand man. Munger served as chairman of Wesco Financial Corporation from 1984 through 2011. He is also chairman of the Daily Journal Corporation, based in Los Angeles, California, and a director of Costco Wholesale Corporation.