CardioNet Inc. (Nasdaq:BEAT), Eagle Bulk Shipping Inc. (Nasdaq:EGLE) and Solarfun Power Holdings Co Ltd. (Nasdaq:SOLF) are among the most actively traded companies in Tuesday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Ticketmaster Entertainment Inc. (Nasdaq:TKTM), Century Aluminum Co. (Nasdaq:CENX), Vanda Pharmaceuticals Inc. (Nasdaq:VNDA), A Power Energy Generation Systems Ltd. (Nasdaq:APWR), OncoGenex Pharmaceuticals Inc. (Nasdaq:OGXI) and Ciena Corp. (Nasdaq:CIEN).

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