Pre-market: Arena Pharmaceuticals, Calumet Specialty Products Partners and Telestone Technologies lead small-cap volume
Arena Pharmaceuticals, Inc. (Nasdaq: ARNA), Calumet Specialty Products Partners, L.P. (Nasdaq: CLMT) and Telestone Technologies Corp. (Nasdaq: TSTC) are among the most actively traded companies in Thursday pre-market trading among those with market capitalizations under $750 million:
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