Piper Jaffray Drops Hammer On MannKind By: Benzinga via Benzinga September 09, 2015 at 11:47 AM EDT Shares of MannKind Corporation (NASDAQ: MNKD) have declined more than 28 percent, year to date. Piper Jaffray’s ... Read More >> Related Stocks: Sanofi-Aventis S.A. ADR