UBS Downgrades Groupon To Sell, Sees a Lack of Scale By: Benzinga via Benzinga March 09, 2016 at 08:23 AM EST UBS’ Eric J. Sheridan downgraded the rating for Groupon Inc (NASDAQ: GRPN) from Neutral to Sell, while maintaining a price ... Read More >> Related Stocks: Groupon Cl A UBS Group Ag ADR