Benzinga's Top #PreMarket Losers By: Benzinga via Benzinga March 23, 2015 at 08:15 AM EDT MEI Pharma, Inc. (NASDAQ: MEIP) fell 62.90% to $2.33 in pre-market trading on failed Pracinostat and azacitidine Phase II study. ... Read More >> Related Stocks: Biogen Idec Carnival Corp Gilead Sciences Mei Pharma Inc Vertex Pharmaceuticals