Shares of Sirius XM are trading higher by 10% since Monday's open. The stock gained on news that Warren Buffett's Berkshire ...

In a report released today, Matthew Harrigan from Benchmark Co. maintained a Buy rating on Sirius XM Holdings (SIRI – Research Report), ...

Warren Buffett’s Berkshire Hathaway increased its stake in SiriusXM, now holding 32% of the satellite radio company.

This followed Liberty Media's tracking stocks with SiriusXM in early September and a restructuring of Malone's media assets ...