Benzinga's Top #PreMarket Gainers By: Benzinga via Benzinga July 20, 2015 at 08:08 AM EDT Exelixis, Inc. (NASDAQ: EXEL) shares rose 53.45 percent to $6.00 in pre-market trading after the company reported positive top-line ... Read More >> Related Stocks: Cellectis S.A. ADR Exelixis Inc Halliburton Co Horizon Therapeutics Morgan Stanley