Domtar Corp. (Nasdaq:UFS), Midsouth Bancorp Inc. (Nasdaq:MSL) and ImmunoGen Inc. (Nasdaq:IMGN) are among the biggest percentage losers in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Blue Square-Israel ADR (Nasdaq:BSI), OfficeMax Inc. (Nasdaq:OMX), FGX International Holdings Ltd. (Nasdaq:FGXI), Atlas Pipeline Partners LP (Nasdaq:APL), Broadwind Energy Inc. (Nasdaq:BWEN) and Complete Production Services Inc. (Nasdaq:CPX).

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