United Rentals Inc (Nasdaq:URI), i2 Technologies Inc. (Nasdaq:ITWO) and Dynamex Inc. (Nasdaq:DDMX) are among the biggest percentage losers in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Diamond Foods Inc. (Nasdaq:DMND), AngioDynamics Inc. (Nasdaq:ANGO), Argon St Inc. (Nasdaq:STST), James River Coal Co. (Nasdaq:JRCC), Movado Group Inc. (Nasdaq:MOV) and Arena Resources Inc. (Nasdaq:ARD).

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