Benzinga's Top #PreMarket Gainers By: Benzinga via Benzinga April 08, 2015 at 08:09 AM EDT PostRock Energy Corporation (NASDAQ: PSTR) shares climbed 11.49% to $4.85 in pre-market trading after jumping 139.01% on ... Read More >> Related Stocks: Cyberark Soft Ord Inovio Pharma Shire Plc Ads Tesla, Inc.