American Superconductor Corporation (AMSC)
Showing Closing Date Range from May 14 to Nov 10, 2026 compared to Nov 14, 2025 to May 13, 2026.
Compare Last 6 Months with Previous Period
Investor Relations:amsc.com/investors
Current Period Close
$25.33
May 14, 2026 - Nov 10, 2026
Previous Period Close
$55.73
Nov 14, 2025 - May 13, 2026
Net Comparison Delta
$-30.40 (-54.55%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(120 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Nov 09, 2026 | $25.33 | May 08, 2026 | $55.19 | -54.10% |
| Nov 06, 2026 | $23.39 | May 07, 2026 | $53.22 | -56.05% |
| Nov 05, 2026 | $23.98 | May 06, 2026 | $57.07 | -57.98% |
| Nov 04, 2026 | $26.26 | May 05, 2026 | $55.01 | -52.26% |
| Nov 03, 2026 | $27.68 | May 04, 2026 | $50.30 | -44.97% |
| Nov 02, 2026 | $26.35 | May 01, 2026 | $52.51 | -49.82% |
| Oct 30, 2026 | $27.05 | Apr 30, 2026 | $53.54 | -49.48% |
| Oct 29, 2026 | $28.05 | Apr 29, 2026 | $47.70 | -41.19% |
| Oct 28, 2026 | $28.19 | Apr 28, 2026 | $47.50 | -40.65% |
| Oct 27, 2026 | $27.63 | Apr 27, 2026 | $49.64 | -44.34% |
| Oct 26, 2026 | $25.40 | Apr 24, 2026 | $49.48 | -48.67% |
| Oct 23, 2026 | $25.12 | Apr 23, 2026 | $46.15 | -45.57% |
| Oct 22, 2026 | $25.01 | Apr 22, 2026 | $48.15 | -48.06% |
| Oct 21, 2026 | $26.64 | Apr 21, 2026 | $41.93 | -36.47% |
| Oct 20, 2026 | $25.70 | Apr 20, 2026 | $40.73 | -36.90% |
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