A satellite radio and online radio service provider in the United States, Sirius XM Holdings Inc is headquartered in Midtown Manhattan, New York City. In 2008, Sirius Satellite Radio and XM Satellite Radio merged to form SiriusXM Radio. SiriusXM offers a wide variety of channels. Live sporting events, talk radio, and a wide variety of music genres are all available. In your car, SiriusXM offers more than 150 channels, unlike local radio, which offers only a handful of stations.