MannKind (NASDAQ:MNKD – Get Free Report) was upgraded by investment analysts at Zacks Research from a “strong sell” rating to a “hold” rating in a note issued to investors on Wednesday,Zacks.com reports. HC Wainwright reiterated a “buy” rating on shares of MannKind in a research note on Thursday, July 23rd. Weiss Ratings restated a “sell (d)” rating on shares of MannKind in a research note on Wednesday, July 8th. Wall Street Zen raised MannKind from a “sell” rating to a “hold” rating in a research report on Sunday, July 5th. Seven investment analysts have rated the stock with a Buy rating, two have given a Hold rating and one has given a Sell rating to the company’s stock.