Sirius Satellite Radio Inc. on Monday said it recently surpassed 4 million subscribers to its nationwide pay radio service.
Sirius, No. 2 in the nascent market to rival XM Satellite Radio Inc., had previously said it ended 2005 with 3.3 million subscribers, an increase of 2.2 million, and expects to end 2006 with more than 6 million subscribers. XM in February said it has more than 6 million subscribers and expects to reach 9 million by the end of the year.
