Suncor Energy (NYSE:SU – Get Free Report) (TSE:SU) was downgraded by research analysts at Zacks Research from a “strong-buy” rating to a “hold” rating in a report issued on Tuesday,Zacks.com reports. Desjardins upgraded Suncor Energy to a “moderate buy” rating in a research note on Thursday, July 16th. Get Suncor Energy alerts:View Our Latest Report on Suncor EnergySuncor Energy Trading Down 2.4%SU stock opened at $62.91 on Tuesday. Key Suncor Energy NewsHere are the key news stories impacting Suncor Energy this week:Positive Sentiment: Quarterly earnings beat expectations: Suncor reported second-quarter earnings of C$2.33 per share, above the C$2.14 consensus estimate and well ahead of C$0.71 a year earlier. Read MoreReceive News & Ratings for Suncor Energy Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Suncor Energy and related companies with MarketBeat.com's FREE daily email newsletter.