Benzinga's Top Pre-Market Gainers

NuPathe PATH surged 5.19% to $3.85 in the pre-market session after the company announced Q4 results. RF Micro Devices RFMD moved up 3.87% to $5.10 in the pre-market session. Analysts at Oppenheimer upgraded RF Micro Devices from “perform” to “outperform.” Corning GLW shares gained 3.84% to $13.51 in the pre-market session. Corning has a dividend yield of 2.80%. Peabody Energy BTU soared 2.16% to $21.25 in the pre-market trading. Peabody Energy's Chairman and CEO Gregory H. Boyce has been named Chairman of the International Energy Agency's Coal Industry Advisory Board.