Satellite Radio - Sirius Satellite Radio NASDAQ: SIRI is one of two satellite radio (SDARS) services operating in the United States and Canada, along with XM Satellite Radio. Headquartered in New York City, with smaller studios in Los Angeles and Memphis, Sirius provides 69 streams (channels) of music and 65 streams of sports, news and entertainment to listeners. Music streams on Sirius carry a wide variety of music genres, broadcasting 24 hours daily, commercial-free. A subset of Sirius music channels is included as part of the Dish Network satellite television service. Sirius channels are identified by Arbitron with the label “XS” (e.g. “XS120”, “XS9”, “XS17”). With most Sirius-enabled radios, the user can see the artist and song information on display while listening to the stream. The streams are broadcast from three satellites in an elliptical geosynchronous orbit above North America.