Matrix Service Co (Nasdaq:MTRX), Lacrosse Footwear Inc (Nasdaq:BOOT) and Enterprise Bancorp Inc (Nasdaq:EBTC) are among the biggest percentage losers in Tuesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Evercore Partners Inc (Nasdaq:EVR), American River Bankshares (Nasdaq:AMRB), Seanergy Maritime Corp (Nasdaq:SHIP), Ocean Power Technologies Inc (Nasdaq:OPTT), Maxygen Inc (Nasdaq:MAXY) and Pharmaxis Depository Receipt (Nasdaq:PXSL).

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