American Superconductor Stock Price History
NASDAQ: AMSCConsumer DiscretionaryMetal FabricationsUSD
30.52-0.43 (-1.39%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
AMSC price history at a glance
The price history for American Superconductor (AMSC) on this page begins on December 9, 1991, when the stock closed at $120.00; it most recently closed at $30.52 on October 5, 2026. The highest price in this record is $751.25, reached on February 28, 2000; the latest close is 95.9% below that peak. Across the 34 complete calendar years in the table, AMSC finished higher in 16 and lower in 18. Its best year was 2003 (+346.6%) and its worst was 2011 (-87.1%).
Over roughly 35 years the share price changed -74.6%, a -3.9% compound annual price return (excluding dividends). In the last 12 months alone, AMSC has lost 49.0%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 1991
- $751.25
- Date of high
- Feb 28, 2000
- Low since 1991
- $2.89
- Date of low
- Aug 7, 2017
- 52-week high
- $70.49
- 52-week low
- $24.87
- IPO year
- 1991
- Last close
- $30.52
AMSC returns
1 week
+1.70%
1 month
+4.13%
3 months
-15.13%
6 months
-19.07%
Year to date
+6.05%
1 year
-48.96%
3 years
+382.15%
5 years
+82.21%
AMSC price return, excluding dividends.
AMSC annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 30.52 | -3.36% |
| 2025 | 31.58 | +10.11% |
| 2024 | 28.68 | +157.45% |
| 2023 | 11.14 | +202.72% |
| 2022 | 3.68 | -66.18% |
| 2021 | 10.88 | -53.54% |
| 2020 | 23.42 | +204.95% |
| 2019 | 7.68 | -29.54% |
| 2018 | 10.90 | +200.28% |
| 2017 | 3.63 | -50.75% |
| 2016 | 7.37 | +15.70% |
| 2015 | 6.37 | -22.32% |
| 2014 | 8.20 | -50.00% |
| 2013 | 16.40 | -43.45% |
| 2012 | 29.00 | -21.41% |
| 2011 | 36.90 | -87.09% |
| 2010 | 285.90 | -30.10% |
| 2009 | 409.00 | +138.48% |
| 2008 | 171.50 | -34.54% |
| 2007 | 262.00 | +167.07% |
| 2006 | 98.10 | +24.65% |
| 2005 | 78.70 | -47.15% |
| 2004 | 148.90 | +8.61% |
| 2003 | 137.10 | +346.58% |
| 2002 | 30.70 | -76.92% |
| 2001 | 133.00 | -53.44% |
| 2000 | 285.63 | +2.01% |
| 1999 | 280.00 | +173.17% |
| 1998 | 102.50 | +20.59% |
| 1997 | 85.00 | -24.44% |
| 1996 | 112.50 | -22.41% |
| 1995 | 145.00 | -41.41% |
| 1994 | 247.50 | +3.13% |
| 1993 | 240.00 | +80.00% |
| 1992 | 133.33 | -18.37% |
| 1991* | 163.33 | +36.11% |
* Partial year: the record begins after the start of 1991; return measured from the first available close.
2026 return is year to date.
AMSC daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 31.33 | 31.54 | 30.30 | 30.52 | -1.39% | |
| 31.14 | 31.96 | 30.18 | 30.95 | -2.49% | |
| 30.57 | 31.97 | 29.99 | 31.74 | -0.35% | |
| 30.49 | 32.10 | 30.25 | 31.85 | +6.24% | |
| 30.06 | 30.30 | 29.24 | 29.98 | -0.10% | |
| 30.37 | 30.68 | 29.69 | 30.01 | +1.73% | |
| 29.25 | 30.08 | 28.20 | 29.50 | +1.34% | |
| 29.52 | 29.83 | 28.95 | 29.11 | -0.21% | |
| 30.00 | 30.26 | 29.02 | 29.17 | -0.41% | |
| 29.63 | 29.98 | 28.83 | 29.29 | -2.40% | |
| 30.89 | 31.06 | 29.96 | 30.01 | -1.35% | |
| 30.22 | 30.74 | 29.69 | 30.42 | -2.03% | |
| 32.01 | 32.13 | 30.78 | 31.05 | -0.61% | |
| 30.29 | 31.55 | 30.04 | 31.24 | +3.31% | |
| 31.00 | 31.00 | 30.12 | 30.24 | +0.17% | |
| 29.23 | 30.34 | 28.85 | 30.19 | +3.57% | |
| 29.14 | 29.50 | 28.77 | 29.15 | +4.82% | |
| 28.26 | 28.27 | 27.26 | 27.81 | +0.40% | |
| 27.69 | 27.99 | 27.28 | 27.70 | +1.54% | |
| 27.62 | 28.18 | 27.20 | 27.28 | -7.62% | |
| 29.32 | 29.66 | 28.97 | 29.53 | +3.04% | |
| 28.46 | 29.16 | 28.08 | 28.66 | -2.22% | |
| 30.14 | 30.65 | 29.28 | 29.31 | -3.71% | |
| 30.00 | 31.00 | 29.90 | 30.44 | +3.01% | |
| 29.15 | 29.70 | 28.94 | 29.55 | +1.86% | |
| 28.40 | 29.23 | 28.27 | 29.01 | +1.83% | |
| 28.57 | 28.99 | 28.03 | 28.49 | -0.25% | |
| 28.10 | 28.69 | 27.51 | 28.56 | -0.52% | |
| 28.38 | 28.81 | 28.10 | 28.71 | +0.77% | |
| 29.83 | 29.93 | 28.30 | 28.49 | -4.52% | |
| 30.48 | 30.49 | 29.30 | 29.84 | +1.19% | |
| 29.76 | 30.19 | 28.91 | 29.49 | -0.54% | |
| 29.83 | 29.95 | 29.36 | 29.65 | +2.52% | |
| 29.08 | 29.59 | 28.10 | 28.92 | -3.63% | |
| 30.51 | 30.65 | 29.42 | 30.01 | -0.13% | |
| 30.98 | 31.16 | 29.72 | 30.05 | -3.56% | |
| 30.80 | 31.34 | 29.80 | 31.16 | +0.45% | |
| 30.80 | 31.41 | 30.35 | 31.02 | -3.45% | |
| 32.01 | 32.25 | 31.82 | 32.13 | +0.66% | |
| 31.99 | 32.75 | 31.59 | 31.92 | +1.30% | |
| 32.01 | 32.78 | 31.35 | 31.51 | -2.39% | |
| 33.30 | 33.89 | 32.23 | 32.28 | +0.47% | |
| 31.64 | 32.56 | 31.55 | 32.13 | +3.68% | |
| 32.81 | 32.99 | 30.96 | 30.99 | -5.43% | |
| 34.00 | 34.24 | 31.27 | 32.77 | -0.40% | |
| 29.64 | 33.93 | 28.50 | 32.90 | -0.12% | |
| 33.25 | 33.63 | 32.62 | 32.94 | -1.52% | |
| 32.10 | 33.82 | 31.54 | 33.45 | +7.94% | |
| 29.20 | 31.09 | 28.87 | 30.99 | +5.52% | |
| 30.74 | 31.13 | 29.15 | 29.37 | -0.27% | |
| 28.59 | 29.73 | 28.07 | 29.45 | +10.55% | |
| 28.35 | 28.78 | 26.34 | 26.64 | -7.34% | |
| 29.76 | 29.76 | 27.91 | 28.75 | -5.83% | |
| 31.00 | 31.28 | 29.19 | 30.53 | +0.03% | |
| 32.96 | 32.96 | 30.20 | 30.52 | -7.52% | |
| 32.82 | 33.92 | 32.23 | 33.00 | -1.20% | |
| 34.55 | 34.99 | 33.20 | 33.40 | -3.33% | |
| 33.56 | 34.79 | 33.33 | 34.55 | +6.27% | |
| 33.52 | 34.12 | 32.31 | 32.51 | -1.57% | |
| 31.58 | 33.98 | 31.41 | 33.03 | -0.18% | |
| 34.22 | 34.24 | 32.34 | 33.09 | -6.26% | |
| 35.55 | 36.40 | 34.22 | 35.30 | -0.45% | |
| 35.50 | 35.80 | 35.03 | 35.46 | +3.74% | |
| 35.10 | 35.55 | 33.97 | 34.18 | -4.95% | |
| 37.17 | 37.72 | 35.76 | 35.96 | -3.26% | |
| 37.66 | 37.81 | 36.49 | 37.17 | +3.25% | |
| 34.62 | 36.17 | 34.18 | 36.00 | +1.27% | |
| 37.02 | 37.20 | 34.50 | 35.55 | -6.77% | |
| 37.61 | 39.11 | 37.34 | 38.13 | +2.75% | |
| 40.10 | 40.45 | 36.28 | 37.11 | -7.04% | |
| 40.64 | 41.49 | 39.60 | 39.92 | -3.83% | |
| 39.89 | 41.67 | 39.51 | 41.51 | +4.22% | |
| 40.24 | 41.40 | 37.81 | 39.83 | +0.25% | |
| 38.96 | 41.19 | 38.02 | 39.73 | -1.37% | |
| 41.93 | 42.84 | 40.07 | 40.28 | -1.40% | |
| 42.13 | 42.24 | 39.60 | 40.85 | -1.87% | |
| 42.04 | 44.11 | 41.60 | 41.63 | -8.16% | |
| 43.72 | 45.43 | 42.99 | 45.33 | +4.45% | |
| 41.49 | 43.49 | 40.44 | 43.40 | +8.15% | |
| 40.57 | 42.18 | 40.07 | 40.13 | -0.82% | |
| 41.07 | 42.36 | 40.35 | 40.46 | -1.49% | |
| 42.06 | 42.98 | 40.52 | 41.07 | +2.62% | |
| 39.51 | 40.62 | 38.71 | 40.02 | +1.29% | |
| 37.44 | 39.54 | 36.71 | 39.51 | +7.42% | |
| 40.29 | 40.96 | 36.72 | 36.78 | -9.25% | |
| 43.66 | 44.76 | 38.92 | 40.53 | -6.48% | |
| 42.86 | 44.39 | 40.76 | 43.34 | +2.36% | |
| 45.34 | 45.95 | 41.20 | 42.34 | -8.75% | |
| 45.64 | 47.24 | 45.19 | 46.40 | -0.58% | |
| 51.00 | 51.30 | 46.24 | 46.67 | -8.79% | |
| 51.46 | 52.55 | 48.87 | 51.17 | +0.04% | |
| 49.47 | 51.99 | 48.77 | 51.15 | +0.41% | |
| 51.19 | 53.37 | 48.52 | 50.94 | -0.76% | |
| 50.00 | 51.37 | 45.46 | 51.33 | -2.56% | |
| 53.60 | 55.09 | 51.55 | 52.68 | -0.83% | |
| 54.00 | 54.40 | 51.28 | 53.12 | +2.47% | |
| 50.28 | 52.48 | 48.86 | 51.84 | +4.90% | |
| 48.64 | 50.66 | 48.39 | 49.42 | +0.41% | |
| 48.46 | 50.10 | 47.22 | 49.22 | +4.52% | |
| 48.10 | 48.62 | 45.72 | 47.09 | -6.10% | |
| 54.86 | 55.11 | 48.52 | 50.15 | -8.92% | |
| 51.53 | 55.24 | 50.32 | 55.06 | +0.66% | |
| 55.73 | 55.78 | 52.58 | 54.70 | -1.85% | |
| 55.81 | 56.25 | 53.00 | 55.73 | +2.24% | |
| 57.04 | 57.05 | 51.32 | 54.51 | -7.17% | |
| 55.10 | 60.18 | 54.81 | 58.72 | +6.40% | |
| 54.37 | 55.68 | 53.47 | 55.19 | +3.70% | |
| 56.09 | 56.90 | 52.66 | 53.22 | -6.75% | |
| 55.59 | 57.18 | 53.71 | 57.07 | +3.74% | |
| 50.99 | 55.70 | 50.99 | 55.01 | +9.36% | |
| 52.51 | 53.00 | 48.53 | 50.30 | -4.21% | |
| 53.22 | 54.20 | 51.42 | 52.51 | -1.92% | |
| 49.23 | 53.65 | 48.00 | 53.54 | +12.24% | |
| 47.79 | 48.60 | 45.69 | 47.70 | +0.42% | |
| 47.91 | 49.49 | 45.57 | 47.50 | -4.31% | |
| 52.39 | 52.39 | 46.01 | 49.64 | +0.32% | |
| 48.14 | 50.78 | 45.50 | 49.48 | +7.22% | |
| 51.25 | 51.47 | 44.47 | 46.15 | -4.15% | |
| 43.40 | 48.23 | 43.40 | 48.15 | +14.83% | |
| 41.36 | 42.93 | 40.75 | 41.93 | +2.95% | |
| 39.37 | 40.84 | 38.81 | 40.73 | +2.54% | |
| 39.00 | 40.75 | 38.13 | 39.72 | +4.61% | |
| 37.86 | 38.59 | 36.89 | 37.97 | +0.61% | |
| 40.00 | 40.04 | 37.21 | 37.74 | -4.33% | |
| 39.00 | 39.60 | 37.25 | 39.45 | +4.34% | |
| 37.29 | 38.11 | 36.54 | 37.81 | +0.27% | |
| 36.50 | 39.25 | 36.35 | 37.71 | +4.32% | |
| 32.87 | 36.41 | 32.87 | 36.15 | +9.48% | |
| 33.73 | 34.28 | 32.68 | 33.02 | +4.69% | |
| 32.10 | 32.27 | 30.87 | 31.54 | -3.31% | |
| 32.37 | 32.99 | 31.97 | 32.62 | +1.65% | |
| 31.33 | 32.89 | 30.96 | 32.09 | -1.72% | |
| 34.26 | 35.05 | 32.60 | 32.65 | -3.55% | |
| 32.60 | 34.28 | 32.18 | 33.85 | +5.09% | |
| 33.87 | 33.87 | 31.36 | 32.21 | -4.48% | |
| 31.64 | 34.04 | 31.64 | 33.72 | +4.36% | |
| 32.56 | 34.27 | 32.21 | 32.31 | -3.72% | |
| 32.87 | 34.65 | 32.57 | 33.56 | +4.19% | |
| 30.00 | 32.73 | 30.00 | 32.21 | +4.58% | |
| 29.53 | 30.95 | 28.82 | 30.80 | +7.17% | |
| 30.47 | 30.78 | 28.55 | 28.74 | -6.29% | |
| 29.03 | 31.20 | 28.69 | 30.67 | +1.76% | |
| 31.10 | 31.67 | 30.11 | 30.14 | -3.30% | |
| 30.83 | 31.55 | 30.56 | 31.17 | +0.87% | |
| 32.15 | 32.50 | 30.11 | 30.90 | -0.39% | |
| 29.68 | 31.19 | 29.68 | 31.02 | +6.02% | |
| 29.70 | 30.03 | 28.82 | 29.26 | -4.57% | |
| 29.45 | 30.83 | 29.33 | 30.66 | +3.30% | |
| 29.00 | 30.23 | 28.96 | 29.68 | +2.20% | |
| 27.09 | 29.11 | 26.46 | 29.04 | +4.84% | |
| 29.91 | 30.47 | 27.69 | 27.70 | -10.18% | |
| 31.35 | 31.70 | 30.01 | 30.84 | -3.20% | |
| 31.92 | 32.55 | 31.39 | 31.86 | +2.48% | |
| 31.40 | 31.58 | 30.08 | 31.09 | -5.82% | |
| 30.20 | 33.38 | 30.08 | 33.01 | +1.32% | |
| 33.15 | 33.62 | 32.38 | 32.58 | -5.95% | |
| 34.30 | 34.81 | 33.20 | 34.64 | -0.12% | |
| 33.90 | 35.81 | 33.80 | 34.68 | +2.88% | |
| 32.31 | 34.24 | 32.05 | 33.71 | +3.69% | |
| 33.61 | 34.35 | 32.01 | 32.51 | -4.49% | |
| 33.17 | 35.53 | 32.50 | 34.04 | +0.77% | |
| 34.53 | 35.06 | 33.00 | 33.78 | -2.88% | |
| 37.40 | 38.10 | 34.00 | 34.78 | -5.13% | |
| 33.64 | 36.82 | 32.62 | 36.66 | +7.01% | |
| 31.95 | 34.53 | 31.05 | 34.26 | +7.23% | |
| 34.99 | 35.50 | 31.81 | 31.95 | -6.74% | |
| 33.49 | 34.82 | 31.21 | 34.26 | +7.47% | |
| 28.64 | 32.36 | 28.07 | 31.88 | +10.73% | |
| 28.13 | 30.13 | 27.74 | 28.79 | +2.20% | |
| 26.36 | 28.36 | 25.28 | 28.17 | +8.55% | |
| 31.76 | 31.85 | 24.87 | 25.95 | -6.01% | |
| 30.10 | 30.17 | 26.92 | 27.61 | -7.97% | |
| 30.90 | 31.24 | 28.75 | 30.00 | -0.07% | |
| 29.93 | 30.90 | 29.15 | 30.02 | +0.33% | |
| 30.96 | 31.67 | 29.67 | 29.92 | -4.86% | |
| 31.80 | 31.92 | 30.22 | 31.45 | -1.16% | |
| 32.57 | 32.88 | 31.30 | 31.82 | -1.09% | |
| 32.00 | 32.42 | 31.36 | 32.17 | +1.97% | |
| 33.13 | 33.94 | 31.36 | 31.55 | -5.20% | |
| 33.26 | 34.50 | 32.13 | 33.28 | +0.54% | |
| 32.42 | 33.47 | 31.80 | 33.10 | +4.06% | |
| 31.83 | 32.20 | 30.04 | 31.81 | +2.09% | |
| 30.52 | 31.42 | 30.28 | 31.16 | -3.20% | |
| 31.28 | 32.70 | 30.94 | 32.19 | +3.57% | |
| 31.64 | 32.00 | 30.96 | 31.08 | -0.54% | |
| 31.18 | 31.27 | 30.10 | 31.25 | -0.98% | |
| 30.85 | 31.78 | 30.65 | 31.56 | +3.58% | |
| 30.30 | 31.12 | 29.50 | 30.47 | -0.65% | |
| 30.95 | 31.30 | 29.92 | 30.67 | +0.29% | |
| 30.80 | 31.05 | 29.95 | 30.58 | -0.55% | |
| 30.80 | 31.38 | 30.16 | 30.75 | 0.00% | |
| 33.28 | 33.48 | 29.97 | 30.75 | -7.41% | |
| 32.35 | 33.69 | 32.08 | 33.21 | +5.16% | |
| 29.75 | 31.61 | 29.71 | 31.58 | +9.73% | |
| 28.97 | 29.18 | 28.68 | 28.78 | -0.59% | |
| 29.41 | 29.44 | 28.94 | 28.95 | -0.99% | |
| 30.20 | 30.64 | 29.21 | 29.24 | -4.38% | |
| 31.37 | 31.45 | 30.40 | 30.58 | -2.43% | |
| 31.51 | 31.58 | 30.90 | 31.34 | -1.35% | |
| 31.59 | 32.18 | 31.49 | 31.77 | -0.28% | |
| 31.28 | 32.29 | 30.73 | 31.86 | +3.95% | |
| 30.49 | 31.61 | 30.29 | 30.65 | +0.20% | |
| 30.40 | 31.40 | 30.01 | 30.59 | +5.34% | |
| 31.43 | 32.06 | 28.97 | 29.04 | -6.95% | |
| 31.20 | 32.59 | 30.99 | 31.21 | -0.95% | |
| 31.58 | 31.84 | 30.67 | 31.51 | +1.42% | |
| 32.22 | 32.46 | 30.27 | 31.07 | -3.63% | |
| 32.74 | 32.80 | 31.41 | 32.24 | -3.39% | |
| 32.42 | 33.59 | 31.67 | 33.37 | +2.65% | |
| 32.27 | 32.71 | 31.75 | 32.51 | +0.15% | |
| 32.96 | 33.16 | 32.02 | 32.46 | -0.03% | |
| 33.01 | 33.16 | 31.95 | 32.47 | -1.64% | |
| 31.79 | 33.50 | 31.70 | 33.01 | +3.03% | |
| 30.74 | 32.15 | 29.90 | 32.04 | +4.06% | |
| 30.63 | 31.64 | 30.50 | 30.79 | +2.80% | |
| 30.09 | 30.95 | 29.65 | 29.95 | -3.67% | |
| 30.91 | 31.41 | 30.58 | 31.09 | +1.93% | |
| 31.32 | 31.50 | 30.27 | 30.50 | -0.81% | |
| 31.07 | 31.24 | 29.53 | 30.75 | -1.66% | |
| 30.82 | 31.83 | 30.54 | 31.27 | +2.93% | |
| 29.73 | 30.98 | 28.70 | 30.38 | +2.01% | |
| 32.88 | 33.42 | 29.70 | 29.78 | -4.49% | |
| 32.17 | 32.61 | 30.81 | 31.18 | +0.03% | |
| 31.40 | 32.57 | 30.69 | 31.17 | -2.99% | |
| 33.74 | 34.01 | 31.69 | 32.13 | -5.25% | |
| 32.07 | 34.85 | 31.84 | 33.91 | +0.83% | |
| 34.79 | 35.18 | 32.82 | 33.63 | -4.41% | |
| 35.96 | 36.40 | 34.43 | 35.18 | -0.40% | |
| 36.34 | 36.34 | 34.16 | 35.32 | -4.31% | |
| 40.28 | 40.90 | 36.70 | 36.91 | -5.02% | |
| 35.80 | 38.87 | 33.81 | 38.86 | +6.32% | |
| 42.81 | 44.83 | 36.20 | 36.55 | -38.49% | |
| 57.20 | 60.65 | 56.08 | 59.42 | +5.56% | |
| 57.30 | 58.80 | 55.26 | 56.29 | -7.16% | |
| 59.75 | 61.30 | 58.51 | 60.63 | +2.36% | |
| 60.79 | 61.20 | 58.10 | 59.23 | +0.53% | |
| 61.78 | 62.63 | 58.11 | 58.92 | -6.49% | |
| 57.97 | 64.72 | 57.97 | 63.01 | +8.90% | |
| 57.48 | 59.36 | 56.69 | 57.86 | +0.02% | |
| 61.00 | 61.59 | 56.96 | 57.85 | -2.90% | |
| 58.40 | 61.94 | 57.47 | 59.58 | +5.40% | |
| 54.85 | 57.20 | 54.01 | 56.53 | +3.19% | |
| 58.83 | 59.49 | 52.75 | 54.78 | -7.56% | |
| 61.07 | 61.07 | 58.01 | 59.26 | -2.90% | |
| 61.92 | 63.70 | 59.31 | 61.03 | +1.68% | |
| 60.86 | 62.50 | 57.80 | 60.02 | -4.81% | |
| 68.56 | 68.56 | 62.19 | 63.05 | -5.44% | |
| 68.76 | 70.49 | 63.84 | 66.68 | +1.74% | |
| 59.21 | 66.55 | 57.01 | 65.54 | +6.45% | |
| 58.72 | 62.22 | 58.28 | 61.57 | +9.48% | |
| 59.74 | 63.01 | 56.07 | 56.24 | -5.95% | |
| 61.00 | 61.61 | 59.19 | 59.80 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the AMSC chart for longer ranges.