A Power Energy Generation Systems Ltd. (Nasdaq:APWR), Stein Mart, Inc. (Nasdaq:SMRT) and Geokinetics Inc. (Nasdaq:GOK) are among the biggest percentage gainers in Friday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Navigant Consulting Inc. (Nasdaq:NCI), Pacific Booker Minerals Inc. (Nasdaq:PBM), Symyx Technologies Inc. (Nasdaq:SMMX), Oriental Financial Group Inc. (Nasdaq:OFG), Psychemedics Corp. (Nasdaq:PMD) and Meta Financial Group Inc. (Nasdaq:CASH).

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