Pre-market: ShengdaTech, Ascent Solar Technologies and GPC Biotech AG lead small-cap volume
ShengdaTech, Inc. (Nasdaq: SDTH), Ascent Solar Technologies, Inc. (Nasdaq: ASTI) and GPC Biotech AG (Nasdaq: GPCB) are among the most actively traded companies in Monday pre-market trading among those with market capitalizations under $750 million:
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