Sumner Murray Redstone (born Sumner Murray Rothstein; May 27, 1923) is an American businessman and media magnate. He is the majority owner and chairman of the board of the National Amusements theater chain. Through National Amusements, Redstone and his family are majority owners of CBS Corporation and Viacom (itself the parent company of Viacom Media Networks, BET Networks, and the film studio Paramount Pictures). According to Forbes, as of March 2014, he is worth US $6.2 billion.