American Superconductor is trading 4.1% down at $29.78 after broader risk-off trading pressured equities on September 24, 2026. - The Nasdaq Composite is down 0.79%. - Elevated Treasury yields, resilient economic data, and Brent crude above $100 intensified inflation and interest-rate concerns. - No fresh company-specific announcement was identified; the September 18 director resignation was previously disclosed and does not clearly explain today’s decline.