In December 2009, Comcast announced its intent to acquire a majority stake in the media conglomerate NBCUniversal from General Electric (GE). The planned acquisition was subject to scrutiny from activists and government officials; their concerns primarily surrounded the potential effects of the vertical integration that the acquisition could create, as Comcast is also heavily involved in cable television and internet services in many media markets. The deal went through, resulting in Comcast owning 51% of the company until March 2013, when GE divested its stake to give Comcast sole ownership. Comcast and mass media corporation NBCUniversal is headquartered in New York City at the Rockefeller Plaza skyscraper.