Benzinga's Top #PreMarket Losers By: Benzinga via Benzinga May 21, 2015 at 08:15 AM EDT Prima Biomed Ltd. (NASDAQ: PBMD) shares tumbled 34.01 percent to $3.90 in pre-market trading following a 269.38 percent gain on ... Read More >> Related Stocks: Dicerna Pharmaceutic Fate Therapeutics NetApp Sarepta Therapeutics