Green Plains (NASDAQ:GPRE – Get Rating) was downgraded by Zacks Investment Research from a “buy” rating to a “hold” rating in a report released on Monday, Zacks.com reports. According to Zacks, “Green Plains Inc. is vertically integrated producer, marketer and distributer of ethanol. The company operates through four segments: Ethanol Production, Corn Oil Production, Agribusiness, […]