NASDAQ:AMSC | Historical Stock Price | AMERICAN SUPERCONDUCTOR CORP /DE/

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1991-12-12 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$3.07$8.94$26.03$75.81$220.81$643.121991-12-122026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2023-12-29$11.14$11.14776,500
2023-12-28$11.45$11.45637,600
2023-12-27$11.66$11.66350,700
2023-12-26$11.40$11.40299,800
2023-12-22$11.06$11.06478,100
2023-12-21$10.53$10.53317,200
2023-12-20$10.20$10.20669,900
2023-12-19$11.04$11.04382,700
2023-12-18$10.80$10.80338,300
2023-12-15$11.15$11.15844,000
2023-12-14$10.99$10.99685,500
2023-12-13$10.92$10.92587,500
2023-12-12$10.46$10.46329,100
2023-12-11$10.21$10.21457,400
2023-12-08$10.00$10.00509,900
2023-12-07$9.94$9.94276,200
2023-12-06$9.90$9.90340,200
2023-12-05$9.95$9.95376,000
2023-12-04$9.86$9.86537,800
2023-12-01$9.78$9.78506,200
2023-11-30$9.46$9.46866,700
2023-11-29$9.25$9.25544,700
2023-11-28$8.84$8.84309,900
2023-11-27$8.95$8.95558,500
2023-11-24$9.36$9.36171,600
2023-11-22$8.98$8.98470,900
2023-11-21$8.83$8.83326,000
2023-11-20$9.36$9.36293,700
2023-11-17$9.26$9.26313,600
2023-11-16$9.09$9.09313,700
2023-11-15$8.91$8.91513,000
2023-11-14$8.95$8.95569,500
2023-11-13$8.22$8.22272,900
2023-11-10$7.73$7.73386,200
2023-11-09$7.96$7.96376,900
2023-11-08$8.13$8.13310,800
2023-11-07$8.10$8.10470,000
2023-11-06$7.75$7.75367,500
2023-11-03$7.75$7.75584,700
2023-11-02$7.26$7.26937,900
2023-11-01$6.40$6.40451,000
2023-10-31$6.27$6.27227,500
2023-10-30$6.22$6.22276,400
2023-10-27$6.21$6.21257,300
2023-10-26$6.22$6.22303,700
2023-10-25$6.14$6.14363,800
2023-10-24$6.27$6.27661,100
2023-10-23$5.83$5.83710,000
2023-10-20$6.02$6.02391,400
2023-10-19$6.08$6.08416,500
2023-10-18$6.18$6.18551,600
2023-10-17$6.46$6.46374,100
2023-10-16$6.21$6.21336,200
2023-10-13$6.33$6.33251,100
2023-10-12$6.41$6.41496,700
2023-10-11$6.80$6.80309,100
2023-10-10$6.83$6.83462,900
2023-10-09$6.53$6.53683,000
2023-10-06$6.89$6.89268,700
2023-10-05$6.80$6.80362,900
2023-10-04$6.90$6.90318,400
2023-10-03$6.89$6.89685,500
2023-10-02$7.21$7.21484,300
2023-09-29$7.55$7.55314,300
2023-09-28$7.50$7.50808,400
2023-09-27$7.50$7.50328,400
2023-09-26$7.28$7.28728,700
2023-09-25$7.47$7.47321,400
2023-09-22$7.62$7.62437,000
2023-09-21$7.59$7.59444,900
2023-09-20$7.57$7.57373,600
2023-09-19$7.66$7.66387,200
2023-09-18$7.79$7.79585,700
2023-09-15$7.72$7.72543,500
2023-09-14$7.61$7.61553,300
2023-09-13$7.56$7.56692,400
2023-09-12$7.73$7.73621,500
2023-09-11$7.93$7.93488,500
2023-09-08$8.06$8.06616,200
2023-09-07$8.16$8.16760,500
2023-09-06$8.39$8.39960,700
2023-09-05$8.73$8.731,395,000
2023-09-01$9.36$9.36800,400
2023-08-31$9.25$9.251,338,300
2023-08-30$9.66$9.661,307,500
2023-08-29$9.53$9.531,547,400
2023-08-28$9.26$9.26913,900
2023-08-25$8.93$8.93648,400
2023-08-24$8.67$8.671,153,900
2023-08-23$9.27$9.271,327,600
2023-08-22$9.05$9.051,512,100
2023-08-21$9.07$9.072,079,200
2023-08-18$8.65$8.651,488,900
2023-08-17$8.62$8.622,281,000
2023-08-16$8.93$8.932,791,700
2023-08-15$8.99$8.992,162,600
2023-08-14$10.07$10.074,904,500
2023-08-11$8.77$8.772,954,200
2023-08-10$9.68$9.685,463,700
2023-08-09$8.54$8.542,800,200
2023-08-08$8.70$8.704,138,500
2023-08-07$10.05$10.057,011,000
2023-08-04$10.31$10.3121,145,700
2023-08-03$9.60$9.609,549,100
2023-08-02$11.46$11.4620,905,300
2023-08-01$16.13$16.1348,611,100
2023-07-31$10.08$10.082,748,300
2023-07-28$9.84$9.844,864,400
2023-07-27$8.45$8.452,200,900
2023-07-26$7.51$7.51501,100
2023-07-25$7.03$7.03230,200
2023-07-24$7.33$7.33176,200
2023-07-21$7.31$7.31223,200
2023-07-20$7.06$7.06196,000
2023-07-19$7.51$7.51396,800
2023-07-18$7.80$7.80913,300
2023-07-17$6.72$6.72156,000
2023-07-14$6.55$6.5577,300
2023-07-13$6.68$6.6887,900
2023-07-12$6.80$6.80149,400
2023-07-11$6.70$6.7098,800
2023-07-10$6.70$6.70125,200
2023-07-07$6.26$6.2693,500
2023-07-06$6.06$6.06125,800
2023-07-05$6.20$6.20117,800
2023-07-03$6.34$6.3485,300
2023-06-30$6.26$6.26170,400
2023-06-29$6.06$6.06423,300
2023-06-28$6.08$6.08191,800
2023-06-27$5.59$5.59452,600
2023-06-26$5.60$5.60156,600
2023-06-23$5.87$5.87132,200
2023-06-22$5.98$5.98268,900
2023-06-21$6.10$6.10291,800
2023-06-20$6.32$6.32226,200
2023-06-16$6.72$6.72272,400
2023-06-15$6.79$6.79203,900
2023-06-14$6.77$6.77454,700
2023-06-13$7.22$7.22383,100
2023-06-12$6.48$6.48408,800
2023-06-09$6.15$6.15143,000
2023-06-08$6.28$6.28221,400
2023-06-07$6.02$6.02442,600
2023-06-06$6.67$6.67411,500
2023-06-05$6.50$6.50471,600
2023-06-02$6.08$6.08521,400
2023-06-01$5.32$5.32307,300
2023-05-31$4.69$4.69337,500
2023-05-30$4.24$4.24137,200
2023-05-26$4.01$4.01244,100
2023-05-25$3.99$3.99156,100
2023-05-24$4.19$4.19118,800
2023-05-23$4.28$4.28156,500
2023-05-22$4.26$4.26213,300
2023-05-19$4.19$4.19103,400
2023-05-18$4.49$4.4987,300
2023-05-17$4.61$4.6154,700
2023-05-16$4.48$4.4887,300
2023-05-15$4.33$4.3348,700
2023-05-12$4.27$4.2745,700
2023-05-11$4.41$4.4169,800
2023-05-10$4.34$4.3496,000
2023-05-09$4.10$4.10115,200
2023-05-08$3.90$3.9058,600
2023-05-05$3.90$3.90216,700
2023-05-04$3.70$3.70153,300
2023-05-03$3.92$3.92104,900
2023-05-02$3.99$3.9966,400
2023-05-01$4.02$4.0270,700
2023-04-28$4.05$4.0581,900
2023-04-27$4.07$4.0789,600
2023-04-26$3.99$3.99133,700
2023-04-25$3.96$3.9684,900
2023-04-24$4.07$4.0780,200
2023-04-21$4.04$4.0491,400
2023-04-20$4.04$4.0463,100
2023-04-19$4.17$4.1772,900
2023-04-18$4.25$4.2590,600
2023-04-17$4.47$4.47155,700
2023-04-14$4.23$4.23157,600
2023-04-13$4.28$4.28161,700
2023-04-12$4.07$4.07151,300
2023-04-11$4.26$4.26159,400
2023-04-10$4.13$4.13130,700
2023-04-06$4.00$4.00152,600
2023-04-05$3.97$3.97207,600
2023-04-04$4.30$4.30141,500
2023-04-03$4.68$4.68247,900
2023-03-31$4.91$4.91122,900
2023-03-30$4.77$4.77464,300
2023-03-29$4.47$4.47120,800
2023-03-28$4.25$4.25103,500
2023-03-27$4.23$4.2370,400
2023-03-24$4.11$4.11118,100
2023-03-23$4.13$4.13140,100
2023-03-22$4.22$4.2295,800
2023-03-21$4.28$4.28131,500
2023-03-20$4.10$4.10130,900
2023-03-17$4.27$4.27343,700
2023-03-16$4.64$4.64148,800
2023-03-15$4.59$4.59121,400
2023-03-14$4.88$4.88150,800
2023-03-13$4.85$4.85165,900
2023-03-10$4.88$4.88214,400
2023-03-09$5.36$5.36235,500
2023-03-08$5.62$5.62309,400
2023-03-07$5.09$5.09109,800
2023-03-06$5.21$5.21141,300
2023-03-03$5.37$5.37208,600
2023-03-02$5.24$5.24130,500
2023-03-01$5.36$5.36117,900
2023-02-28$5.36$5.36173,700
2023-02-27$5.27$5.27142,200
2023-02-24$5.25$5.25152,200
2023-02-23$5.39$5.39132,100
2023-02-22$5.15$5.15154,200
2023-02-21$5.43$5.43234,600
2023-02-17$5.87$5.87198,500
2023-02-16$5.88$5.88224,400
2023-02-15$6.04$6.04220,600
2023-02-14$5.64$5.64145,400
2023-02-13$5.83$5.83171,400
2023-02-10$5.72$5.72236,600
2023-02-09$5.81$5.81193,500
2023-02-08$6.05$6.05326,300
2023-02-07$6.57$6.57343,900
2023-02-06$6.38$6.38723,000
2023-02-03$5.31$5.31131,400
2023-02-02$5.36$5.36444,200
2023-02-01$5.63$5.63182,600
2023-01-31$5.43$5.43202,100
2023-01-30$5.03$5.03118,600
2023-01-27$5.34$5.3477,800
2023-01-26$5.33$5.3384,300
2023-01-25$5.24$5.24110,300
2023-01-24$5.36$5.36130,000
2023-01-23$5.45$5.45111,000
2023-01-20$5.33$5.33178,700
2023-01-19$5.51$5.51318,100
2023-01-18$5.35$5.35371,600
2023-01-17$5.04$5.04132,700
2023-01-13$4.83$4.83221,600
2023-01-12$4.73$4.73252,600
2023-01-11$4.30$4.30175,800
2023-01-10$4.07$4.0769,800
2023-01-09$3.87$3.87155,100
2023-01-06$3.63$3.63116,800
2023-01-05$3.59$3.5967,900
2023-01-04$3.67$3.6775,000
2023-01-03$3.58$3.58132,400