Benzingas Top Pre-Market NASDAQ Gainers

Westport Innovations Inc WPRT shares advanced 6.23% to $22.85 in the pre-market session. WPRT signed an agreement with General Motors GM to help develop advanced natural gas engine technology. SIGA Technologies Inc SIGA shares advanced 5.34% to $11.45 in the pre-market session. SIGA had no debt for the recent quarter. Spreadtrum Communications Inc SPRD climbed 4.41% to $13.52 in the pre-market session. Analysts at Jefferies initiated coverage of SPRD with a “buy” rating. OmniVision Technologies Inc OVTI jumped 2.24% to $31.44 in the pre-market session. OVTI's PEG ratio is 0.68.