Websense Inc (Nasdaq:WBSN), Orexigen Therapeutics Inc (Nasdaq:OREX) and Pzena Investment Management Inc (Nasdaq:PZN) are among the biggest percentage losers in Wednesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Kohlberg Capital Corp (Nasdaq:KCAP), Greenbrier Companies Inc (Nasdaq:GBX), Geokinetics Inc (Nasdaq:GOK), Olympic Steel Inc (Nasdaq:ZEUS), Startek, Inc (Nasdaq:SRT) and American Dairy Inc (Nasdaq:ADY).

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