The Union Pacific Corporation is an American publicly traded railroad holding company serving as the holding company for the Union Pacific Railroad. Incorporated in 1969 in Utah, it is headquartered in Omaha, Nebraska along with its Union Pacific Railroad subsidiary. Along with BNSF Railway, owned by Berkshire Hathaway, the companies have a near-duopoly on freight railroad transportation west of the Mississippi River. Notable companies acquired by Union Pacific and merged into Union Pacific Railroad include Missouri Pacific Railroad which included the Missouri–Kansas–Texas Railroad, the Chicago and North Western Transportation Company, the Western Pacific Railroad, the Denver and Rio Grande Western Railroad, the St. Louis Southwestern Railway, the SPCSL Corporation, and the Southern Pacific Transportation Company. Union Pacific has announced plans to acquire the Norfolk Southern in a deal worth $85 billion. If approved by regulators, it would create the first transcontinental railroad network in the United States.