 AXcess News | Premarket Movers: Stars aligned for XM BusinessWeek - FEB. 9 9:20 AM ET Even before XM Satellite Radio Holdings Inc. said it had inked a deal with multi-media megastar Oprah Winfrey, it had been upgraded to a "Buy" rating by Stifel Nicolaus Thursday. Oprah deal latest salvo in satellite radio battle Oprah strikes a deal with XM Radio |