Benzinga's Top #PreMarket Gainers

Dendreon

surged 16.60% to $2.95 in the pre-market session on reports that the company has hired JP Morgan to help find a buyer. Zogenix

shares gained 9.21% to $3.32 in the pre-market session after the company won the FDA approval for Zohydro ER capsules. Ariad Pharmaceuticals

soared 5.06% to $3.74 in the pre-market trading. ARIAD Pharmaceuticals is expected to report its Q3 financial results on November 6, 2013. SolarCity

shares jumped 4.14% to $60.43 in pre-market trading. SolarCity's trailing-twelve-month revenue is $125.18 million.