Benzinga's Top #PreMarket Gainers By: Benzinga via Benzinga December 10, 2015 at 08:11 AM EST American Superconductor Corporation (NASDAQ: AMSC) shares surged 14.29 percent to $4.40 in pre-market trading after the company ... Read More >> Related Stocks: Amer Superconductor Calamp Corp Cyberark Soft Ord Gopro Inc Cl A