Groupon (GRPN) +7% premarket after an upgrade to Buy at Sterne Agee. "We have greater conviction...

|By:, SA News Editor

Groupon (GRPN) +7% premarket after an upgrade to Buy at Sterne Agee. "We have greater conviction in the company's ability to evolve beyond its current business," says Sterne's Arvind Bhatia.