Oppenheimer's Bittner Downgrades Chipotle, Sees Downside To $400-$450 By: Benzinga via Benzinga January 04, 2016 at 10:48 AM EST Chipotle Mexican Grill, Inc. (NYSE: CMG) shares are down 36 percent in the last three months. Oppenheimer's Brian ... Read More >> Related Stocks: Chipotle Mexican Grill Jack IN The Box Inc