 Shares of Sirius XM Holdings Inc. SIRI, 2.75 rose 0.9 in premarket trading Tuesday, after the satellite radio company topped profit and revenue expectations, provided an upbeat outlook and declared a special dividend of 25 cents a share. The company swung to net income of 316 million, or 8 cents a share, from a loss of 662 million, or 16 cents a share, in the year-ago period. 