Cepheid (Nasdaq:CPHD), Integra Bank Corp (Nasdaq:IBNK) and Affymetrix Inc (Nasdaq:AFFX) are among the biggest percentage losers in Friday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Ultratech Inc (Nasdaq:UTEK), Oneida Financial Corp (Nasdaq:ONFC), Abaxis Inc (Nasdaq:ABAX), South Finl Group (Nasdaq:TSFG), Standard Register Co (Nasdaq:SR) and Gencor Industries Inc (Nasdaq:GENC).

Here are the biggest percentage losers among small caps:

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