Benzinga's Top Pre-Market Gainers

Questcor Pharmaceuticals QCOR moved up 18.47% to $61.50 in the pre-market session after the company reported upbeat Q2 earnings. Trius Therapeutics TSRX soared 17.25% to $13.73 in the pre-market trading after the company agreed to be acquired by Cubist Pharmaceuticals CBST for up to $1.62 billion. CardioNet BEAT surged 13.35% to $6.20 in the pre-market session on Q2 results. SodaStream International SODA shares gained 8.92% to $63.52 in the pre-market session after the company reported strong Q2 results and lifted its FY13 forecast.