Benzinga's Top Pre-Market Gainers

Sierra Wireless

shares jumped 4.14% to $15.35 in pre-market trading. Sierra Wireless shares have jumped 87.77% over the past 52 weeks, while the S&P 500 index has gained 17.37% in the same period. DryShips

surged 2.72% to $3.59 in the pre-market session. DryShips' trailing-twelve-month revenue is $1.28 billion. Himax Technologies

shares gained 2.70% to $11.05 in the pre-market session. Himax has a dividend yield of 2.30%. Yongye International

soared 2.51% to $6.13 in the pre-market trading after the company entered into a definitive merger agreement.