The stock closed down 23.73%, or $1.59, to $5.11. More than 2.3 million shares changed hands, which easily surpassed the average volume of 143,730.
Shares of late-stage biopharma Cytokinetics increased following positive comments from an Needham analyst.
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Trade-Ideas LLC identified Sorrento Therapeutics (SRNE) as a weak on high relative volume candidate