Biggest Tuesday small-cap percentage gainers: Q.E.P. Co., Inc., ACA Capital Holdings, Inc., HydroGen Corp.
Q.E.P. Co., Inc. (Nasdaq: QEPC), ACA Capital Holdings, Inc. (NYSE: ACA) and HydroGen Corp. (Nasdaq: HYDG) the biggest percentage gainers in Tuesday's trading among companies with market capitalizations under $500 million.
Here are today's biggest percentage gainers:
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| 12:13 et | Change | Change | Volume | Year High | Year Low |


















