Computer Programs And Systems Inc. (Nasdaq:CPSI), Zhongpin Inc. (Nasdaq:HOGS) and Sequenom Inc. (Nasdaq:SQNM) are among the most actively traded companies in Wednesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Rambus Inc. (Nasdaq:RMBS), TBS International Ltd. (Nasdaq:TBSI), LHC Group Inc. (Nasdaq:LHCG), Hot Topic, Inc. (Nasdaq:HOTT), GMX Resources Inc. (Nasdaq:GMXR) and Zions Bancorp (Nasdaq:ZION).

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