Air Methods Corp (Nasdaq:AIRM), Zoltek Cos Inc (Nasdaq:ZOLT), China INtergrated Energy Inc (Nasdaq:CBEH) and Clear Channel Outdoor Holdings (Nasdaq:CCO) are among the biggest percentage Gainers in Friday’s trading among companies with market capitalizations under $1 billion.

Also included among the results: Virnetx Holdings Corp (Nasdaq:VHC), Lifetime Brands Inc (Nasdaq:LCUT), Wabash National Corp (Nasdaq:WNC), PLX Technology Inc (Nasdaq:PLXT) and Bronco Drilling Co Inc (Nasdaq:BRNC).