Vetr Urges Strong Buy On Groupon After Uptrend Emerges By: Benzinga via Benzinga September 26, 2017 at 08:29 AM EDT The Vetr crowd on Monday upgraded its rating on Groupon Inc (NASDAQ: GRPN) from 3 stars (Hold), issued 15 days ago, to 5 stars (Strong ... Read More >> Related Stocks: Groupon Cl A