Morgan Stanley Says Groupon's 16% Decline In 2018 Is 'Overdone' By: Benzinga via Benzinga March 05, 2018 at 09:26 AM EST Shares of Groupon Inc (NASDAQ: GRPN) have fallen more than 15 percent since the start of the year, a move Morgan Stanley said is ... Read More >> Related Stocks: Groupon Cl A