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 $3,594.41 as of October 21, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,498.54, while $1000 invested 1 year ago would be worth $433.68. This corresponds to total returns of 259.44%, 49.85%, -56.63%, respectively, with annualized returns of 13.64%, 8.42%, -56.63%.

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
October 20, 2026	25.31	25.7	25.7	26.44	25.01	729,772
October 19, 2026	26.46	25.68	25.68	26.59	25.53	807,417
October 16, 2026	26.42	25.67	25.67	26.85	25.5	679,752
October 15, 2026	24.71	26.89	26.89	27.05	24.08	1.13M
October 14, 2026	28	25.65	25.65	28	25.38	1.28M
October 13, 2026	29.18	28.71	28.71	29.72	28.32	604,618
October 12, 2026	30.43	29.6	29.6	30.51	29.47	541,798
October 09, 2026	31.3	30.52	30.52	31.54	30.3	744,246
October 08, 2026	31.14	30.95	30.95	31.96	30.16	1.06M
October 07, 2026	30.57	31.74	31.74	31.97	29.99	1.37M
October 06, 2026	30.49	31.85	31.85	32.1	30.25	842,871
October 05, 2026	30.06	29.98	29.98	30.3	29.24	487,475
October 02, 2026	30.37	30.01	30.01	30.68	29.69	533,876
October 01, 2026	29.25	29.5	29.5	30.08	28.2	664,975
September 30, 2026	29.52	29.11	29.11	29.83	28.95	742,366
September 29, 2026	30	29.17	29.17	30.26	29.02	658,962
September 28, 2026	29.63	29.29	29.29	29.98	28.83	525,236
September 25, 2026	30.89	30.01	30.01	31.06	29.96	676,110
September 24, 2026	30.22	30.42	30.42	30.74	29.69	674,807
September 23, 2026	32.01	31.05	31.05	32.13	30.78	876,901
September 22, 2026	30.29	31.24	31.24	31.55	30.04	880,406
September 21, 2026	30.37	30.24	30.24	30.58	30.12	570,170
September 18, 2026	29.23	30.19	30.19	30.34	28.85	992,945
September 17, 2026	29.14	29.15	29.15	29.5	28.77	649,976
September 16, 2026	28.26	27.81	27.81	28.27	27.26	732,982
September 15, 2026	27.69	27.7	27.7	27.99	27.28	722,922
September 11, 2026	29.32	29.53	29.53	29.66	28.97	393,847
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