Allos Therapeutics Inc (Nasdaq:ALTH), Interactive Brokers Group Inc (Nasdaq:IBKR) and Old Dominion Freight Line Inc (Nasdaq:ODFL) are among the most actively traded companies in Monday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Elbit Imaging Ltd (Nasdaq:EMITF), Focus Media Holding Ltd (Nasdaq:FMCN), China Finance Online Co Ltd (Nasdaq:JRJC), James River Coal Co (Nasdaq:JRCC), Zoltek Companies Inc (Nasdaq:ZOLT) and Questcor Pharmaceuticals Inc (Nasdaq:QCOR).

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