Benzinga's Top #PreMarket Losers By: Benzinga via Benzinga March 03, 2015 at 08:23 AM EST MannKind Corp. (NASDAQ: MNKD) shares dropped 7.83% to $6.12 in pre-market. Goldman Sachs downgraded MannKind from Neutral to Sell and ... Read More >> Related Stocks: Caesars Entertainment Inc Micron Technology Tarena Intl ADR