American Superconductor Corporation (AMSC)
Showing Closing Date Range from Sep, 04 to Sep, 11, 2026 compared to Sep, 04 to Sep, 11, 2025.
Compare Last 7 Days Same Dates of Previous Year
Current Period Close
$29.53
Sep 04, 2026 - Sep 11, 2026
Previous Year Close
$54.72
Sep 04, 2025 - Sep 11, 2025
Net Comparison Delta
$-25.19 (-46.03%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(5 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Sep 11, 2026 | $29.53 | Sep 10, 2025 | $51.45 | -42.60% |
| Sep 10, 2026 | $28.66 | Sep 09, 2025 | $49.85 | -42.51% |
| Sep 09, 2026 | $29.31 | Sep 08, 2025 | $50.08 | -41.47% |
| Sep 08, 2026 | $30.44 | Sep 05, 2025 | $48.88 | -37.73% |
| Sep 04, 2026 | $29.55 | Sep 04, 2025 | $48.53 | -39.11% |