Benzinga's Top #PreMarket Losers By: Benzinga via Benzinga April 28, 2014 at 08:09 AM EDT Athersys (NASDAQ: ATHX) dropped 52.38% to $1.30 in pre-market trading on failed trial results for ulcerative colitis. OncoGenex ... Read More >> Related Stocks: Athersys Inc Barrick Gold Corporation Newmont Mining Teva Pharmaceutical Industries ADR