Benzinga's Top Pre-Market Gainers

SIGA Technologies Inc

shares advanced 12.27% to $3.02 in the pre-market session. SIGA shares have dipped 67.98% over the past 52 weeks, while the S&P 500 index has dropped 1.66% in the same period. PowerShares Global Coal

shares advanced 9.84% to $26.3839 in the pre-market session. Motricity Inc

climbed 8.60% to $2.02 in the pre-market session. MOTR entered into a $20 million term loan financing arrangement with High River Limited Partnership. American Superconductor Corporation

jumped 5.15% to $4.70 in the pre-market session. AMSC posted a higher-than-expected quarterly loss.