American Superconductor Corporation (AMSC)
NASDAQ: AMSC · Real-Time Price · USD
50.15
-4.91 (-8.92%)
At close: May 18, 2026, 4:00 PM EDT
49.54
-0.61 (-1.22%)
Pre-market: May 19, 2026, 6:08 AM EDT
American Superconductor Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| May 18, 2026 | 54.86 | 55.11 | 48.52 | 50.15 | 50.15 | -8.92% | 1,260,145 |
| May 15, 2026 | 51.53 | 55.24 | 50.32 | 55.06 | 55.06 | 0.66% | 1,059,765 |
| May 14, 2026 | 55.73 | 55.78 | 52.58 | 54.70 | 54.70 | -1.85% | 1,210,718 |
| May 13, 2026 | 55.81 | 56.25 | 53.00 | 55.73 | 55.73 | 2.24% | 977,276 |
| May 12, 2026 | 57.04 | 57.05 | 51.32 | 54.51 | 54.51 | -7.17% | 1,314,800 |
| May 11, 2026 | 55.10 | 60.18 | 54.81 | 58.72 | 58.72 | 6.40% | 1,749,703 |
| May 8, 2026 | 54.37 | 55.68 | 53.47 | 55.19 | 55.19 | 3.70% | 859,757 |
| May 7, 2026 | 56.09 | 56.90 | 52.66 | 53.22 | 53.22 | -6.75% | 1,201,571 |
| May 6, 2026 | 55.59 | 57.18 | 53.71 | 57.07 | 57.07 | 3.74% | 1,080,324 |
| May 5, 2026 | 50.99 | 55.70 | 50.99 | 55.01 | 55.01 | 9.36% | 1,400,576 |
| May 4, 2026 | 52.51 | 53.00 | 48.53 | 50.30 | 50.30 | -4.21% | 1,068,761 |
| May 1, 2026 | 53.22 | 54.20 | 51.42 | 52.51 | 52.51 | -1.92% | 1,310,429 |
| Apr 30, 2026 | 49.23 | 53.65 | 48.00 | 53.54 | 53.54 | 12.24% | 1,863,819 |
| Apr 29, 2026 | 47.79 | 48.60 | 45.69 | 47.70 | 47.70 | 0.42% | 1,293,242 |
| Apr 28, 2026 | 47.91 | 49.49 | 45.57 | 47.50 | 47.50 | -4.31% | 1,769,648 |
| Apr 27, 2026 | 52.39 | 52.39 | 46.01 | 49.64 | 49.64 | 0.32% | 2,525,355 |
| Apr 24, 2026 | 48.14 | 50.78 | 45.50 | 49.48 | 49.48 | 7.22% | 2,319,312 |
| Apr 23, 2026 | 51.25 | 51.47 | 44.47 | 46.15 | 46.15 | -4.15% | 2,644,641 |
| Apr 22, 2026 | 43.40 | 48.23 | 43.40 | 48.15 | 48.15 | 14.83% | 2,463,651 |
| Apr 21, 2026 | 41.36 | 42.93 | 40.75 | 41.93 | 41.93 | 2.95% | 1,586,955 |
| Apr 20, 2026 | 39.37 | 40.84 | 38.81 | 40.73 | 40.73 | 2.54% | 692,339 |
| Apr 17, 2026 | 39.00 | 40.75 | 38.13 | 39.72 | 39.72 | 4.61% | 1,058,393 |
| Apr 16, 2026 | 37.86 | 38.59 | 36.89 | 37.97 | 37.97 | 0.61% | 917,306 |
| Apr 15, 2026 | 40.00 | 40.04 | 37.21 | 37.74 | 37.74 | -4.33% | 1,293,983 |
| Apr 14, 2026 | 39.00 | 39.60 | 37.25 | 39.45 | 39.45 | 4.34% | 993,882 |
| Apr 13, 2026 | 37.29 | 38.11 | 36.54 | 37.81 | 37.81 | 0.27% | 796,886 |
| Apr 10, 2026 | 36.50 | 39.25 | 36.35 | 37.71 | 37.71 | 4.32% | 1,238,430 |
| Apr 9, 2026 | 32.87 | 36.41 | 32.87 | 36.15 | 36.15 | 9.48% | 1,408,124 |
| Apr 8, 2026 | 33.73 | 34.28 | 32.68 | 33.02 | 33.02 | 4.69% | 918,462 |
| Apr 7, 2026 | 32.10 | 32.27 | 30.87 | 31.54 | 31.54 | -3.31% | 562,637 |
| Apr 6, 2026 | 32.37 | 32.99 | 31.97 | 32.62 | 32.62 | 1.65% | 380,864 |
| Apr 2, 2026 | 31.33 | 32.89 | 30.96 | 32.09 | 32.09 | -1.72% | 630,615 |
| Apr 1, 2026 | 34.26 | 35.05 | 32.60 | 32.65 | 32.65 | -3.55% | 633,709 |
| Mar 31, 2026 | 32.60 | 34.28 | 32.18 | 33.85 | 33.85 | 5.09% | 1,135,615 |
| Mar 30, 2026 | 33.87 | 33.87 | 31.36 | 32.21 | 32.21 | -4.48% | 1,978,075 |
| Mar 27, 2026 | 31.64 | 34.04 | 31.64 | 33.72 | 33.72 | 4.36% | 1,042,041 |
| Mar 26, 2026 | 32.56 | 34.27 | 32.21 | 32.31 | 32.31 | -3.72% | 1,573,076 |
| Mar 25, 2026 | 32.87 | 34.65 | 32.57 | 33.56 | 33.56 | 4.19% | 946,953 |
| Mar 24, 2026 | 30.00 | 32.73 | 30.00 | 32.21 | 32.21 | 4.58% | 893,656 |
| Mar 23, 2026 | 29.53 | 30.95 | 28.82 | 30.80 | 30.80 | 7.17% | 1,547,991 |
| Mar 20, 2026 | 30.47 | 30.78 | 28.55 | 28.74 | 28.74 | -6.29% | 1,246,301 |
| Mar 19, 2026 | 29.03 | 31.20 | 28.69 | 30.67 | 30.67 | 1.76% | 505,041 |
| Mar 18, 2026 | 31.10 | 31.67 | 30.11 | 30.14 | 30.14 | -3.30% | 621,334 |
| Mar 17, 2026 | 30.83 | 31.55 | 30.56 | 31.17 | 31.17 | 0.87% | 503,727 |
| Mar 16, 2026 | 32.15 | 32.50 | 30.11 | 30.90 | 30.90 | -0.39% | 637,575 |
| Mar 13, 2026 | 29.68 | 31.19 | 29.68 | 31.02 | 31.02 | 6.02% | 925,420 |
| Mar 12, 2026 | 29.70 | 30.03 | 28.82 | 29.26 | 29.26 | -4.57% | 666,633 |
| Mar 11, 2026 | 29.45 | 30.83 | 29.33 | 30.66 | 30.66 | 3.30% | 725,863 |
| Mar 10, 2026 | 29.00 | 30.23 | 28.96 | 29.68 | 29.68 | 2.20% | 917,507 |
| Mar 9, 2026 | 27.09 | 29.11 | 26.46 | 29.04 | 29.04 | 4.84% | 1,292,092 |