Imperial Sugar Co. (Nasdaq:IPSU), Citi Trends Inc. (Nasdaq:CTRN) and TIBCO Software Inc. (Nasdaq:TIBX) are among the most actively traded companies in Thursday's trading among companies with market capitalizations under $1 billion.

Also included among the results: Atheros Communications Inc. (Nasdaq:ATHR), International Bancshares Corp. (Nasdaq:IBOC), Pinnacle Financial Partners Inc. (Nasdaq:PNFP), ValueClick Inc. (Nasdaq:VCLK), Conn's Inc. (Nasdaq:CONN) and Energy Conversion Devices Inc. (Nasdaq:ENER).

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