American Superconductor Corporation (AMSC) NASDAQ

Currency In USD

AMSC Historical Return

If you invested $1000 in American Superconductor Corporation (AMSC) 10 years ago, it would be worth $4,106.02 as of September 11, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $2,084.36, while $1000 invested 1 year ago would be worth $523.76. This corresponds to total returns of 310.6%, 108.44%, -47.62%, respectively, with annualized returns of 15.17%, 15.83%, -47.62%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

AMSC Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
September 10, 2026	28.46	28.66	28.66	29.16	28.08	554,557
September 09, 2026	30.14	29.31	29.31	30.65	29.28	900,899
September 08, 2026	30	30.44	30.44	31	29.9	850,496
September 04, 2026	29.15	29.55	29.55	29.7	28.94	468,728
September 03, 2026	28.4	29.01	29.01	29.23	28.27	445,925
September 02, 2026	28.57	28.49	28.49	28.99	28.03	596,449
September 01, 2026	28.1	28.56	28.56	28.69	27.51	807,213
August 31, 2026	28.38	28.71	28.71	28.81	28.1	754,720
August 28, 2026	29.83	28.49	28.49	29.93	28.3	665,023
August 27, 2026	30.48	29.84	29.84	30.49	29.3	541,057
August 26, 2026	29.76	29.49	29.49	30.19	28.91	585,834
August 25, 2026	29.83	29.65	29.65	29.95	29.36	440,846
August 24, 2026	29.08	28.92	28.92	29.59	28.1	1.12M
August 21, 2026	30.51	30.01	30.01	30.65	29.42	737,838
August 20, 2026	30.98	30.05	30.05	31.16	29.72	516,584
August 19, 2026	30.8	31.16	31.16	31.34	29.8	535,350
August 18, 2026	30.8	31.02	31.02	31.41	30.35	618,579
August 17, 2026	32.01	32.13	32.13	32.25	31.82	550,154
August 14, 2026	31.99	31.92	31.92	32.75	31.59	531,666
August 13, 2026	32.01	31.51	31.51	32.78	31.35	519,680
August 12, 2026	33.3	32.28	32.28	33.89	32.23	530,399
August 11, 2026	31.64	32.13	32.13	32.56	31.55	526,370
August 10, 2026	32.81	30.99	30.99	32.99	30.96	569,550
August 07, 2026	34	32.77	32.77	34.24	31.27	867,924
August 06, 2026	29.64	32.9	32.9	33.93	28.5	1.14M
August 05, 2026	33.25	32.94	32.94	33.63	32.62	1.04M
August 04, 2026	32.1	33.45	33.45	33.82	31.54	847,792
August 03, 2026	29.2	30.99	30.99	31.09	28.87	664,622
July 31, 2026	30.74	29.37	29.37	31.13	29.15	659,209
July 30, 2026	28.59	29.45	29.45	29.73	28.07	764,799
July 29, 2026	28.35	26.64	26.64	28.78	26.34	1.14M
July 28, 2026	29.76	28.75	28.75	29.76	27.91	1.08M
July 27, 2026	31	30.53	30.53	31.28	29.19	1.38M
July 24, 2026	32.96	30.52	30.52	32.96	30.2	1.12M
July 23, 2026	32.82	33	33	33.92	32.23	883,733
July 22, 2026	34.55	33.4	33.4	34.99	33.2	764,809
July 21, 2026	33.56	34.55	34.55	34.78	33.33	701,528
July 20, 2026	33.52	32.51	32.51	34.12	32.31	418,671
July 17, 2026	31.58	33.03	33.03	33.98	31.41	608,420
July 16, 2026	34.22	33.09	33.09	34.24	32.34	575,911
July 15, 2026	35.55	35.3	35.3	36.4	34.22	527,504
July 14, 2026	35.5	35.46	35.46	35.8	35.03	418,409
July 13, 2026	35.1	34.18	34.18	35.55	33.97	556,130
July 10, 2026	37.17	35.96	35.96	37.72	35.76	561,274
July 09, 2026	37.66	37.17	37.17	37.81	36.49	667,086
July 08, 2026	34.62	36	36	36.17	34.18	829,541
July 07, 2026	37.02	35.55	35.55	37.2	34.5	734,335
July 06, 2026	37.61	38.13	38.13	39.11	37.34	845,812
July 02, 2026	40.1	37.11	37.11	40.45	36.28	877,106
July 01, 2026	40.64	39.92	39.92	41.49	39.6	708,674
June 30, 2026	39.89	41.51	41.51	41.67	39.51	704,817
June 29, 2026	40.24	39.83	39.83	41.4	37.81	815,199
June 26, 2026	38.96	39.73	39.73	41.19	38.02	2.16M
June 25, 2026	41.93	40.28	40.28	42.84	40.07	960,794
June 24, 2026	42.13	40.85	40.85	42.24	39.6	843,281
June 23, 2026	42.04	41.63	41.63	44.11	41.6	765,998
June 22, 2026	43.72	45.33	45.33	45.43	42.99	1.03M
June 18, 2026	41.49	43.4	43.4	43.49	40.44	1.12M
June 17, 2026	40.57	40.13	40.13	42.18	40.07	797,152
June 16, 2026	41.07	40.46	40.46	42.36	40.35	1.12M