UPDATE: Longbow Upgrades Chipotle, Optimistic On SSS & Price Increase By: Benzinga via Benzinga May 07, 2014 at 10:19 AM EDT In a report published Wednesday, Longbow Research analyst Alton Stump upgraded Chipotle Mexican Grill (NYSE: CMG) from Neutral to Buy ... Read More >> Related Stocks: Chipotle Mexican Grill