Aladdin Knowledge Systems Ltd (Nasdaq:ALDN), Avis Budget Group (Nasdaq:CAR) and MarineMax, Inc (Nasdaq:HZO) are among the biggest percentage losers in Wednesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Fuel Systems Solutions Inc (Nasdaq:FSYS), Pyramid Oil Co (Nasdaq:PDO), Royale Energy Inc (Nasdaq:ROYL), Temecula Valley Bancorp Inc (Nasdaq:TMCV), Thomas Weisel Partners Group Inc (Nasdaq:TWPG) and Horsehead Holding Corp (Nasdaq:ZINC).

Here are the biggest percentage losers among small caps:

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