MTU Aero Engines (OTCMKTS:MTUAY – Get Free Report) was downgraded by equities research analysts at Zacks Research from a “strong-buy” rating to a “hold” rating in a note issued to investors on Monday,Zacks.com reports. UBS Group downgraded MTU Aero Engines from a “strong-buy” rating to a “hold” rating in a research note on Thursday, September 4th. The Goldman Sachs Group initiated coverage on MTU Aero Engines in a research note on Friday, September 19th. Get MTU Aero Engines alerts:View Our Latest Report on MTUAYMTU Aero Engines Stock Up 4.7%Shares of MTU Aero Engines stock opened at $229.99 on Monday. Read MoreReceive News & Ratings for MTU Aero Engines Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for MTU Aero Engines and related companies with MarketBeat.com's FREE daily email newsletter.