CRA International Inc. (Nasdaq:CRAI), Big 5 Sporting Goods Corp. (Nasdaq:BGFV) and UAL Corp. (Nasdaq:UAUA) are among the biggest percentage losers in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Pacific Capital Bancorp (Nasdaq:PCBC), FGX International Holdings Ltd. (Nasdaq:FGXI), Graco Inc. (Nasdaq:GGG), Enterprise Financial Services Corp. (Nasdaq:EFSC), Yadkin Valley Financial Corp. (Nasdaq:YAVY) and Pharmasset Inc. (Nasdaq:VRUS).

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