Sumner Murray Redstone (born Sumner Murray Rothstein; May 27, 1923) is a media magnate. He is the majority owner and Chairman of the Board of the National Amusements theater chain. Through National Amusements, Sumner Redstone and his family are majority owners of CBS Corporation and Viacom (itself the parent company of MTV Networks, BET, and the film studio Paramount Pictures), and are equal partners in MovieTickets.com. According to Forbes as of September 2013 he is worth US $5.8 billion.