XM-Sirius is now official

The merger between XM and Sirius is now official – the deal closed earlier today, with the new company being titled SiriusXM Radio (of course the Sirius name goes first…)

The company will trade on Nasdaq under the name SIRI. With the two companies combining forces, the new entity has 18.5 million subscribers to start.

The new company also plans to launch operations in Puerto Rico.