Benzinga's Top Upgrades, Downgrades For April 26, 2018 By: Benzinga via Benzinga April 26, 2018 at 09:25 AM EDT Top Upgrades Cowen & Co. upgraded Chipotle Mexican Grill, Inc. (NYSE: CMG) from Underperform to Market Perform. Chipotle ... Read More >> Related Stocks: Allegiant Travel Com Anthem Inc Aqua America BP Plc ADR Boeing Co Bonanza Creek Energy Inc Centerstate Bank Corp Changyou.com Ltd Chipotle Mexican Grill Citrix Systems Clarus Corp Covenant Transportn Dova Pharmaceuticals Inc Foward Air Corp Hess Corp Highpoint Resources Corp Lemaitre Vascular Omega Healthcare Investors Owens-Illinois Pegasystems Inc Stratasys Ltd Twitter, Inc. Veritone Inc