American Superconductor Corporation (AMSC)
Showing Closing Date Range from Aug, 14 to Sep, 11, 2026 compared to Aug, 14 to Sep, 11, 2025.
Compare Last 28 Days Same Dates of Previous Year
Current Period Close
$29.53
Aug 14, 2026 - Sep 11, 2026
Previous Year Close
$54.72
Aug 14, 2025 - Sep 11, 2025
Net Comparison Delta
$-25.19 (-46.03%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(20 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Sep 11, 2026 | $29.53 | Sep 11, 2025 | $54.72 | -46.03% |
| Sep 10, 2026 | $28.66 | Sep 10, 2025 | $51.45 | -44.30% |
| Sep 09, 2026 | $29.31 | Sep 09, 2025 | $49.85 | -41.20% |
| Sep 08, 2026 | $30.44 | Sep 08, 2025 | $50.08 | -39.22% |
| Sep 04, 2026 | $29.55 | Sep 05, 2025 | $48.88 | -39.55% |
| Sep 03, 2026 | $29.01 | Sep 04, 2025 | $48.53 | -40.22% |
| Sep 02, 2026 | $28.49 | Sep 03, 2025 | $48.63 | -41.41% |
| Sep 01, 2026 | $28.56 | Sep 02, 2025 | $48.76 | -41.43% |
| Aug 31, 2026 | $28.71 | Aug 29, 2025 | $49.90 | -42.46% |
| Aug 28, 2026 | $28.49 | Aug 28, 2025 | $53.84 | -47.08% |
| Aug 27, 2026 | $29.84 | Aug 27, 2025 | $52.11 | -42.74% |
| Aug 26, 2026 | $29.49 | Aug 26, 2025 | $52.26 | -43.57% |
| Aug 25, 2026 | $29.65 | Aug 25, 2025 | $49.58 | -40.20% |
| Aug 24, 2026 | $28.92 | Aug 22, 2025 | $50.68 | -42.94% |
| Aug 21, 2026 | $30.01 | Aug 21, 2025 | $48.59 | -38.24% |
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