20 Biggest Mid-Day Gainers For Tuesday By: Benzinga via Benzinga January 24, 2017 at 12:39 PM EST GenVec Inc (NASDAQ: GNVC) shares surged 39.7 percent to $6.34 after Intrexon Corp (NYSE: XON) announced plans to buy GenVec at $7 ... Read More >> Related Stocks: AK Steel Holding Corp Alibaba Group Holding Ltd Allegheny Technologies Amtech Systems Inc Aviat Networks Inc Cellectar Biosc Coherent Corp D.R.Horton Douglas Dynamics Gopro Inc Cl A Intevac Inc Intrexon Corp Marinemax Inc Mercury Sys Inc Northern Dynasty Minerals Orchids Paper Products Company Resmed Inc Silgan Holdings Westrock Company Yahoo