American Superconductor Corporation (AMSC)

NASDAQ: AMSC · Real-Time Price · USD

29.01

+0.52 (1.83%)

At close: Sep 3, 2026, 4:00 PM EDT

29.20

+0.19 (0.65%)

After-hours: Sep 3, 2026, 5:30 PM EDT

American Superconductor Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Sep 3, 2026	28.40	29.23	28.27	29.01	29.01	1.83%	445,787
Sep 2, 2026	28.57	28.99	28.03	28.49	28.49	-0.25%	596,195
Sep 1, 2026	28.10	28.69	27.51	28.56	28.56	-0.52%	804,835
Aug 31, 2026	28.38	28.81	28.10	28.71	28.71	0.77%	748,014
Aug 28, 2026	29.83	29.93	28.30	28.49	28.49	-4.52%	664,954
Aug 27, 2026	30.48	30.49	29.30	29.84	29.84	1.19%	540,844
Aug 26, 2026	29.76	30.19	28.91	29.49	29.49	-0.54%	580,135
Aug 25, 2026	29.83	29.95	29.36	29.65	29.65	2.52%	440,684
Aug 24, 2026	29.08	29.59	28.10	28.92	28.92	-3.63%	1,119,071
Aug 21, 2026	30.51	30.65	29.42	30.01	30.01	-0.13%	735,896
Aug 20, 2026	30.98	31.16	29.72	30.05	30.05	-3.56%	516,255
Aug 19, 2026	30.80	31.34	29.80	31.16	31.16	0.45%	535,698
Aug 18, 2026	30.80	31.41	30.35	31.02	31.02	-3.45%	619,396
Aug 17, 2026	32.01	32.25	31.82	32.13	32.13	0.66%	550,525
Aug 14, 2026	31.99	32.75	31.59	31.92	31.92	1.30%	535,003
Aug 13, 2026	32.01	32.78	31.35	31.51	31.51	-2.39%	521,147
Aug 12, 2026	33.30	33.89	32.23	32.28	32.28	0.47%	533,166
Aug 11, 2026	31.64	32.56	31.55	32.13	32.13	3.68%	526,606
Aug 10, 2026	32.81	32.99	30.96	30.99	30.99	-5.42%	571,780
Aug 7, 2026	34.00	34.24	31.27	32.77	32.77	-0.41%	870,106
Aug 6, 2026	29.64	33.93	28.50	32.90	32.90	-0.12%	1,139,075
Aug 5, 2026	33.25	33.63	32.62	32.94	32.94	-1.52%	1,056,253
Aug 4, 2026	32.10	33.82	31.54	33.45	33.45	7.94%	859,687
Aug 3, 2026	29.20	31.09	28.87	30.99	30.99	5.52%	665,831
Jul 31, 2026	30.74	31.13	29.15	29.37	29.37	-0.27%	661,262
Jul 30, 2026	28.59	29.73	28.07	29.45	29.45	10.55%	768,229
Jul 29, 2026	28.35	28.78	26.34	26.64	26.64	-7.34%	1,139,052
Jul 28, 2026	29.76	29.76	27.91	28.75	28.75	-5.83%	1,083,166
Jul 27, 2026	31.00	31.28	29.19	30.53	30.53	0.03%	1,381,786
Jul 24, 2026	32.96	32.96	30.20	30.52	30.52	-7.52%	1,120,888
Jul 23, 2026	32.82	33.92	32.23	33.00	33.00	-1.20%	884,879
Jul 22, 2026	34.55	34.99	33.20	33.40	33.40	-3.31%	765,882
Jul 21, 2026	33.56	34.79	33.33	34.55	34.55	6.26%	704,674
Jul 20, 2026	33.52	34.12	32.31	32.51	32.51	-1.56%	420,860
Jul 17, 2026	31.58	33.98	31.41	33.03	33.03	-0.20%	609,092
Jul 16, 2026	34.22	34.24	32.34	33.09	33.09	-6.26%	577,113
Jul 15, 2026	35.55	36.40	34.22	35.30	35.30	-0.45%	527,886
Jul 14, 2026	35.50	35.80	35.03	35.46	35.46	3.74%	419,457
Jul 13, 2026	35.10	35.55	33.97	34.18	34.18	-4.95%	558,339
Jul 10, 2026	37.17	37.72	35.76	35.96	35.96	-3.26%	563,105
Jul 9, 2026	37.66	37.81	36.49	37.17	37.17	3.25%	717,569
Jul 8, 2026	34.62	36.17	34.18	36.00	36.00	1.27%	831,129
Jul 7, 2026	37.02	37.20	34.50	35.55	35.55	-6.77%	736,304
Jul 6, 2026	37.61	39.11	37.34	38.13	38.13	2.75%	846,258
Jul 2, 2026	40.10	40.45	36.28	37.11	37.11	-7.04%	884,367
Jul 1, 2026	40.64	41.49	39.60	39.92	39.92	-3.83%	710,309
Jun 30, 2026	39.89	41.67	39.51	41.51	41.51	4.22%	710,074
Jun 29, 2026	40.24	41.40	37.81	39.83	39.83	0.25%	841,553
Jun 26, 2026	38.96	41.19	38.02	39.73	39.73	-1.37%	2,160,370
Jun 25, 2026	41.93	42.84	40.07	40.28	40.28	-1.40%	962,199