Benzinga's Top #PreMarket Gainers

Achillion Pharmaceuticals

surged 8.70% to $2.75 in the pre-market session after the company's ACH-3422 showed compelling preclinical profile. Canadian Solar

shares jumped 5.32% to $26.92 in pre-market trading after the company reported selective preliminary results for the third quarter. Ariad Pharmaceuticals

shares gained 6.59% to $2.75 in the pre-market session. Ariad shares have dropped 88.13% over the past 52 weeks, while the S&P 500 index has gained 24.57% in the same period. SunPower

soared 2.33% to $31.59 in the pre-market trading after the company reported that it has acquired Greenbotics.