Heron Therapeutics is trading 10.33% up at $0.30 after rebounding from its September 21, 2026 close of $0.27, with no new company-specific announcement or reliable catalyst explaining the September 22 move.
- Shares fell 12.82% on September 21.
- Recent coverage continues to reference CINVANTI patent uncertainty and the withdrawn 2026 outlook, which predate today’s rebound.
- Broader markets are mixed, providing limited support rather than a clear explanation.