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AMSC
$25.70+0.08%
as of close, Oct 20, 2026
☾ AH $25.70 +0.08%
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American Superconductor Corporation monthly returns

American Superconductor Corporation has averaged 1.66% per month, positive in 47% of months. Month-by-month returns for American Superconductor Corporation (AMSC) below, through October 20, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.

Average month
+1.7%
418 months
Best month
+159.4%
Feb 2000
Worst month
-52.4%
Apr 2011
Positive months
47%
of all months

American Superconductor Corporation monthly returns#

American Superconductor Corporation total return by month
MonthTotal return
Oct 2026
-11.7%
Sep 2026
+1.4%
Aug 2026
-2.2%
Jul 2026
-29.2%
Jun 2026
-18.5%
May 2026
-4.9%
Apr 2026
+58.2%
Mar 2026
+3.9%
Feb 2026
+8.9%
Jan 2026
+4.0%
Dec 2025
-7.4%
Nov 2025
-47.5%
Oct 2025
-0.3%
Sep 2025
+19.0%
Aug 2025
-12.2%
Jul 2025
+54.9%
Jun 2025
+29.8%
May 2025
+42.4%
Apr 2025
+9.4%
Mar 2025
-20.1%
Feb 2025
-13.6%
Jan 2025
+6.7%
Dec 2024
-27.7%
Nov 2024
+38.9%
Oct 2024
+3.9%
Sep 2024
+16.7%
Aug 2024
-16.3%
Jul 2024
+3.3%
Jun 2024
+21.9%
May 2024
+55.3%
Apr 2024
-8.6%
Mar 2024
+0.4%
Feb 2024
+22.3%
Jan 2024
-1.3%
Dec 2023
+17.8%
Nov 2023
+50.9%
Oct 2023
-17.0%
Sep 2023
-18.4%
Aug 2023
-8.2%
Jul 2023
+61.0%
Jun 2023
+33.5%
May 2023
+15.8%
Apr 2023
-17.5%
Mar 2023
-8.4%
Feb 2023
-1.3%
Jan 2023
+47.6%
Dec 2022
-2.1%
Nov 2022
-16.8%
Oct 2022
+3.2%
Sep 2022
-18.0%
Aug 2022
-13.0%
Jul 2022
+18.5%
Jun 2022
-3.0%
May 2022
+0.2%
Apr 2022
-30.0%
Mar 2022
-10.4%
Feb 2022
+3.5%
Jan 2022
-24.6%
Dec 2021
-15.0%
Nov 2021
-30.4%
Oct 2021
+26.1%
Sep 2021
-2.1%
Aug 2021
+6.0%
Jul 2021
-19.2%
Jun 2021
+16.2%
May 2021
-9.1%
Apr 2021
-13.1%
Mar 2021
-20.3%
Feb 2021
-3.8%
Jan 2021
+5.6%
Dec 2020
+17.8%
Nov 2020
+42.9%
Oct 2020
-3.9%
Sep 2020
+15.3%
Aug 2020
+35.1%
Jul 2020
+14.4%
Jun 2020
+12.1%
May 2020
+26.1%
Apr 2020
+4.9%
Mar 2020
-20.0%
Feb 2020
+9.1%
Jan 2020
-20.0%
Dec 2019
-6.0%
Nov 2019
+6.6%
Oct 2019
-0.1%
Sep 2019
+2.2%
Aug 2019
-13.7%
Jul 2019
-4.2%
Jun 2019
-4.6%
May 2019
-11.9%
Apr 2019
-14.2%
Mar 2019
-13.3%
Feb 2019
+13.5%
Jan 2019
+17.2%
Dec 2018
+11.5%
Nov 2018
+66.9%
Oct 2018
-13.8%
Sep 2018
+13.9%
Aug 2018
+17.8%
Jul 2018
-26.0%
Jun 2018
+0.6%
May 2018
+18.0%
Apr 2018
+1.4%
Mar 2018
+23.0%
Feb 2018
-9.2%
Jan 2018
+43.5%
Dec 2017
+9.0%
Nov 2017
-20.7%
Oct 2017
-7.5%
Sep 2017
+17.0%
Aug 2017
+21.6%
Jul 2017
-31.0%
Jun 2017
+12.1%
May 2017
-20.9%
Apr 2017
-24.1%
Mar 2017
+12.3%
Feb 2017
-12.6%
Jan 2017
-5.2%
Dec 2016
-4.8%
Nov 2016
+20.7%

Monthly total return (since Nov 2021)#

American Superconductor Corporation returns by calendar month#

Every month of every year since 1992, one tick per year on a shared scale; the dark bar is the month's average. Total returns, dividends reinvested.

October 2026 so far: -11.71% — 27th of 35 Octobers since 1992 at the last close; the average October returned +1.2%.

American Superconductor Corporation returns by calendar month since 1992
Month−160%0+160%AverageUp
Jan+2.9%49%
Feb+4.5%46%
Mar-3.7%40%
Apr-0.9%49%
May+5.2%51%
Jun+7.4%54%
Jul-0.7%46%
Aug-1.1%40%
Sep-0.2%51%
OctOctober 2026 so far: -11.7%+1.2%41%
Nov+1.6%50%
Dec+4.3%53%

Methodology#

Monthly returns are total returns (dividends reinvested), computed from AMSC's split- and dividend-adjusted month-end closes. The table shows the most recent 120 months and the bar chart the most recent 60. See the year-by-year returns for the annual view. Past performance does not predict future returns; not investment advice.

FAQ#

What is American Superconductor Corporation's average monthly return?
American Superconductor Corporation (AMSC) has averaged about 1.66% per month, positive in roughly 47% of months. The best month was Feb 2000 (+159.4%) and the worst was Apr 2011 (-52.4%).

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