Benzinga's Top #PreMarket Gainers By: Benzinga via Benzinga September 14, 2015 at 08:15 AM EDT Collegium Pharmaceutical Inc (NASDAQ: COLL) shares rose 41.26 percent to $19.00 in pre-market trading after the company reported that ... Read More >> Related Stocks: Apple Aquinox Pharmaceutic Collegium Pharma Geron Corp Vertex Pharmaceuticals