Plug Power (NASDAQ:PLUG – Get Free Report)‘s stock had its “buy” rating reissued by stock analysts at HC Wainwright in a research report issued to clients and investors on Tuesday,Benzinga reports. Weiss Ratings downgraded Plug Power from a “sell (d-)” rating to a “sell (e+)” rating in a research note on Tuesday, July 28th. Get Plug Power alerts:View Our Latest Research Report on Plug PowerPlug Power Price PerformanceShares of NASDAQ PLUG opened at $2.11 on Tuesday. Plug Power News SummaryHere are the key news stories impacting Plug Power this week:Positive Sentiment: Revenue and adjusted earnings exceeded expectations. Recommended StoriesReceive News & Ratings for Plug Power Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Plug Power and related companies with MarketBeat.com's FREE daily email newsletter.