Benzinga's Top #PreMarket Gainers

Venaxis APPY soared 22.83% to $3.33 in the pre-market trading on positive top-line results from pivotal study of APPY1 test. Plug Power PLUG shares gained 11.18% to $7.56 in the pre-market after the company reported fourth-quarter results. Plug Power posted a quarterly loss of $0.08 per share, versus the estimated loss of $0.08 per share. Krispy Kreme Doughnuts KKD surged 10.76% to $22.02 in the pre-market session after the company reported a surge in its fourth-quarter earnings and lifted its forecast for fiscal 2015. The company's board also increased the share repurchase authorization to $80 million. Gogo GOGO shares jumped 8.46% to $25.90 in pre-market trading after the company reported better-than-expected fourth-quarter results.