Pre-market: Heelys, Rick's Cabaret International and Mattson Technology lead small-cap volume
Heelys, Inc. (Nasdaq: HLYS), Rick's Cabaret Int'l, Inc. (Nasdaq: RICK) and Mattson Technology, Inc. (Nasdaq: MTSN) are among the most actively traded companies in Thursday pre-market trading among those with market capitalizations under $750 million:
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