Liberty Global Inc. (Nasdaq:LBTYA), Riverbed Technology Inc. (Nasdaq:RVBD) and Ciena Corp. (Nasdaq:CIEN) are among the most actively traded companies in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Forward Air Corp. (Nasdaq:FWRD), Medicines Co. (Nasdaq:MDCO), Omniture Inc. (Nasdaq:OMTR), Old Dominion Freight Line Inc. (Nasdaq:ODFL),BLDRS Emerging Markets (Nasdaq:ADRE) and Axsys Technologies Inc. (Nasdaq:AXYS).

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