Vetr Upgrades Sirius XM Following Rumors Of Pandora Acquisition By: Benzinga via Benzinga May 25, 2017 at 08:04 AM EDT The Vetr crowd on Wednesday downgraded its rating for Sirius XM Holdings Inc. (NASDAQ: SIRI) from 4 stars (Buy), issued six days ago, to ... Read More >> Related Stocks: Pandora Media Inc Siriusxm Holdings Inc