Century Aluminum Co. (Nasdaq:CENX), China Sunergy Co Ltd. (Nasdaq:CSUN) and EV Energy Partners L P (Nasdaq:EVEP) are among the most actively traded companies in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: ATP Oil & Gas Corporation (Nasdaq:ATPG), Chindex International Inc. (Nasdaq:CHDX), Eagle Bulk Shipping Inc. (Nasdaq:EGLE), Solarfun Power Holdings Co Ltd. (Nasdaq:SOLF), Hercules Offshore Inc. (Nasdaq:HERO) and Internet Gold-Golden Lines Ltd. (Nasdaq:IGLD).

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