Tree.com Inc. (Nasdaq:TREE), GFI Group Inc. (Nasdaq:GFIG) and Big 5 Sporting Goods Corp. (Nasdaq:BGFV) are among the biggest percentage gainers in Friday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Par Technology Corp. (Nasdaq:PTC), James River Coal Co. (Nasdaq:JRCC), NetScout Systems Inc. (Nasdaq:NTCT), Chiquita Brands International Inc. (Nasdaq:CQB), Patriot Coal Corp. (Nasdaq:PCX) and Fushi Copperweld Inc. (Nasdaq:FSIN).

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