Benzinga's Top Pre-Market NASDAQ Gainers (CEPH, CIGX, GLUU, CLNE)

Cephalon Inc CEPH shares surged 31.06% to $77 in the pre-market session. Valeant Pharmaceuticals International VRX made an unsolicited $5.7 billion offer to purchase Cephalon. Star Scientific Inc CIGX shares advanced 5.34% to $4.14 in the pre-market session. CIGX shares have surged 45.56% over the past 52 weeks, while the S&P 500 index has gained 12.46% in the same period. Glu Mobile Inc GLUU climbed 4.68% to $4.25 in the pre-market session. GLUU shares have jumped 314.29% over the past 52 weeks, while the S&P 500 index has gained 12.46% in the same period. Clean Energy Fuels Corp CLNE jumped 3.82% to $15.50 in the pre-market session. CLNE shares have dropped 34.46% over the past 52 weeks, while the S&P 500 index has gained 12.46% in the same period. Read more from Benzinga's Markets.