National Amusements, Inc. is an American privately owned theater company based in Dedham, Massachusetts, United States. The company was founded in 1936, as the Northeast Theatre Corporation by Michael Redstone. National Amusements is now owned by Michael Redstone's son, Sumner Redstone, who holds 80% of the company, and Sumner's daughter, Shari Redstone, who owns the remaining 20%. Through National Amusements, the Redstones control both the CBS Corporation (owner of CBS) and Viacom (owner of Paramount Pictures) through supervoting shares.