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.

View year

Historical Stock Price — 2024

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2024-12-31$24.63$24.631,242,800
2024-12-30$25.20$25.201,239,100
2024-12-27$25.06$25.061,015,100
2024-12-26$26.48$26.48878,400
2024-12-24$25.02$25.02543,300
2024-12-23$25.31$25.31817,900
2024-12-20$25.15$25.151,325,600
2024-12-19$24.14$24.141,105,100
2024-12-18$24.95$24.951,925,200
2024-12-17$25.93$25.931,423,700
2024-12-16$25.78$25.781,656,100
2024-12-13$25.83$25.83960,700
2024-12-12$26.37$26.371,700,500
2024-12-11$28.81$28.811,737,400
2024-12-10$27.04$27.041,501,800
2024-12-09$28.73$28.732,048,800
2024-12-06$31.20$31.202,656,500
2024-12-05$34.89$34.891,847,400
2024-12-04$35.23$35.231,219,200
2024-12-03$32.84$32.841,108,200
2024-12-02$34.49$34.491,277,600
2024-11-29$34.06$34.06518,600
2024-11-27$32.37$32.371,014,000
2024-11-26$33.68$33.68824,800
2024-11-25$34.61$34.611,933,700
2024-11-22$34.22$34.221,150,800
2024-11-21$33.96$33.961,968,300
2024-11-20$31.16$31.16700,900
2024-11-19$31.57$31.571,119,000
2024-11-18$30.57$30.571,388,600
2024-11-15$30.08$30.081,524,400
2024-11-14$31.91$31.913,184,700
2024-11-13$36.65$36.651,691,600
2024-11-12$36.06$36.061,475,000
2024-11-11$36.81$36.812,944,100
2024-11-08$34.14$34.144,559,900
2024-11-07$28.31$28.311,798,600
2024-11-06$28.62$28.621,075,600
2024-11-05$28.70$28.70960,600
2024-11-04$27.04$27.041,808,800
2024-11-01$28.54$28.542,745,600
2024-10-31$24.52$24.522,244,900
2024-10-30$23.48$23.48776,100
2024-10-29$24.08$24.08617,800
2024-10-28$24.22$24.22892,700
2024-10-25$22.93$22.93538,300
2024-10-24$22.64$22.64696,700
2024-10-23$22.19$22.19904,600
2024-10-22$23.36$23.36552,000
2024-10-21$23.85$23.851,703,200
2024-10-18$24.92$24.921,119,700
2024-10-17$24.73$24.731,706,400
2024-10-16$26.39$26.392,121,300
2024-10-15$23.27$23.27590,800
2024-10-14$23.81$23.81729,500
2024-10-11$24.00$24.001,214,700
2024-10-10$22.17$22.171,712,500
2024-10-09$23.72$23.721,231,600
2024-10-08$22.60$22.601,169,000
2024-10-07$23.49$23.49824,000
2024-10-04$23.96$23.961,276,300
2024-10-03$21.51$21.51641,200
2024-10-02$21.88$21.88754,800
2024-10-01$21.33$21.331,230,200
2024-09-30$23.60$23.60852,200
2024-09-27$22.98$22.98866,400
2024-09-26$22.06$22.061,654,200
2024-09-25$23.35$23.351,188,700
2024-09-24$24.03$24.031,685,000
2024-09-23$24.44$24.443,254,600
2024-09-20$22.03$22.031,749,000
2024-09-19$21.90$21.90535,100
2024-09-18$20.73$20.73518,600
2024-09-17$21.33$21.33548,000
2024-09-16$21.68$21.681,823,800
2024-09-13$21.44$21.441,681,400
2024-09-12$21.68$21.681,567,400
2024-09-11$21.93$21.931,328,000
2024-09-10$22.72$22.721,279,100
2024-09-09$19.95$19.95653,600
2024-09-06$18.42$18.42633,600
2024-09-05$18.78$18.78404,300
2024-09-04$18.73$18.73410,600
2024-09-03$18.85$18.85783,700
2024-08-30$20.22$20.22933,000
2024-08-29$19.79$19.79500,200
2024-08-28$19.35$19.35555,500
2024-08-27$20.52$20.52392,100
2024-08-26$20.99$20.99458,000
2024-08-23$21.28$21.28725,500
2024-08-22$19.98$19.98353,300
2024-08-21$20.65$20.65582,000
2024-08-20$20.41$20.41736,400
2024-08-19$22.29$22.29617,900
2024-08-16$21.38$21.38632,600
2024-08-15$21.22$21.221,225,800
2024-08-14$20.52$20.52474,500
2024-08-13$20.66$20.66721,200
2024-08-12$19.72$19.72644,300
2024-08-09$19.98$19.98789,300
2024-08-08$20.32$20.32772,900
2024-08-07$18.71$18.712,316,600
2024-08-06$20.59$20.59987,100
2024-08-05$20.40$20.40995,600
2024-08-02$21.42$21.42899,100
2024-08-01$22.67$22.67914,100
2024-07-31$24.16$24.16911,000
2024-07-30$23.11$23.11947,000
2024-07-29$24.50$24.50907,700
2024-07-26$25.44$25.44601,800
2024-07-25$25.04$25.041,128,900
2024-07-24$26.37$26.37831,900
2024-07-23$28.78$28.781,531,200
2024-07-22$28.53$28.531,249,100
2024-07-19$26.25$26.25857,800
2024-07-18$26.23$26.232,078,600
2024-07-17$29.00$29.002,432,700
2024-07-16$32.42$32.421,869,000
2024-07-15$31.19$31.191,378,900
2024-07-12$29.80$29.801,705,100
2024-07-11$29.07$29.071,180,200
2024-07-10$27.43$27.43887,100
2024-07-09$27.28$27.281,581,200
2024-07-08$28.06$28.062,380,600
2024-07-05$25.65$25.651,130,000
2024-07-03$25.95$25.951,037,300
2024-07-02$24.09$24.09712,600
2024-07-01$22.98$22.98911,600
2024-06-28$23.39$23.396,103,100
2024-06-27$24.27$24.271,678,900
2024-06-26$23.60$23.60962,800
2024-06-25$24.04$24.04806,600
2024-06-24$23.21$23.211,220,700
2024-06-21$24.43$24.43702,700
2024-06-20$24.50$24.501,414,500
2024-06-18$25.18$25.181,234,000
2024-06-17$25.04$25.041,231,400
2024-06-14$25.92$25.921,347,300
2024-06-13$26.34$26.342,566,800
2024-06-12$23.55$23.551,366,500
2024-06-11$21.96$21.96697,800
2024-06-10$22.07$22.07784,700
2024-06-07$21.36$21.36734,800
2024-06-06$21.54$21.541,015,400
2024-06-05$22.35$22.351,398,600
2024-06-04$21.03$21.031,314,400
2024-06-03$20.77$20.771,984,400
2024-05-31$19.18$19.181,792,100
2024-05-30$17.44$17.443,966,900
2024-05-29$15.79$15.79887,300
2024-05-28$15.93$15.93585,900
2024-05-24$16.06$16.06553,700
2024-05-23$15.11$15.11433,800
2024-05-22$15.80$15.80818,700
2024-05-21$15.24$15.24695,200
2024-05-20$14.34$14.34371,500
2024-05-17$14.01$14.01213,300
2024-05-16$14.21$14.21170,300
2024-05-15$14.49$14.49435,900
2024-05-14$14.03$14.03400,800
2024-05-13$14.01$14.01279,700
2024-05-10$13.52$13.52272,800
2024-05-09$13.81$13.81256,600
2024-05-08$13.57$13.57185,700
2024-05-07$13.53$13.53257,800
2024-05-06$13.74$13.74653,800
2024-05-03$13.37$13.37249,500
2024-05-02$12.99$12.99327,300
2024-05-01$12.64$12.64294,600
2024-04-30$12.35$12.35258,800
2024-04-29$12.51$12.51200,500
2024-04-26$12.27$12.27365,800
2024-04-25$11.86$11.86186,800
2024-04-24$11.87$11.87235,400
2024-04-23$12.33$12.33304,000
2024-04-22$11.74$11.74263,600
2024-04-19$11.66$11.66319,000
2024-04-18$11.75$11.75184,900
2024-04-17$11.88$11.88183,300
2024-04-16$11.95$11.95253,800
2024-04-15$12.06$12.06334,400
2024-04-12$12.48$12.48269,400
2024-04-11$13.01$13.01233,900
2024-04-10$12.68$12.68279,800
2024-04-09$13.10$13.10332,700
2024-04-08$12.76$12.76236,300
2024-04-05$12.83$12.83240,500
2024-04-04$12.69$12.69317,400
2024-04-03$13.04$13.04420,300
2024-04-02$13.02$13.02331,700
2024-04-01$13.49$13.49281,600
2024-03-28$13.51$13.51630,600
2024-03-27$13.45$13.45710,400
2024-03-26$12.90$12.90402,600
2024-03-25$13.20$13.20220,300
2024-03-22$13.03$13.03310,200
2024-03-21$13.11$13.11527,100
2024-03-20$13.41$13.41426,200
2024-03-19$13.17$13.17555,700
2024-03-18$13.31$13.31520,700
2024-03-15$14.05$14.051,017,000
2024-03-14$13.56$13.56801,500
2024-03-13$14.65$14.65308,600
2024-03-12$14.54$14.54392,000
2024-03-11$14.70$14.70513,000
2024-03-08$14.96$14.96792,500
2024-03-07$14.40$14.40474,300
2024-03-06$13.91$13.91740,100
2024-03-05$13.42$13.42606,800
2024-03-04$14.35$14.351,599,500
2024-03-01$13.71$13.71447,500
2024-02-29$13.45$13.45660,400
2024-02-28$13.06$13.06424,300
2024-02-27$13.23$13.23484,600
2024-02-26$13.29$13.29439,400
2024-02-23$12.84$12.84594,200
2024-02-22$13.04$13.04527,700
2024-02-21$13.21$13.21600,900
2024-02-20$13.27$13.27957,800
2024-02-16$14.28$14.28770,400
2024-02-15$14.37$14.371,035,200
2024-02-14$14.44$14.441,612,300
2024-02-13$12.71$12.711,005,400
2024-02-12$13.03$13.032,920,200
2024-02-09$11.31$11.31794,600
2024-02-08$10.93$10.93931,600
2024-02-07$10.28$10.281,266,800
2024-02-06$10.59$10.591,228,900
2024-02-05$10.99$10.991,003,900
2024-02-02$11.17$11.17899,800
2024-02-01$11.31$11.312,543,500
2024-01-31$11.00$11.005,934,200
2024-01-30$13.44$13.441,120,000
2024-01-29$13.64$13.641,421,100
2024-01-26$13.77$13.773,453,400
2024-01-25$13.25$13.2513,225,700
2024-01-24$9.75$9.75533,200
2024-01-23$10.03$10.03301,700
2024-01-22$10.03$10.03274,100
2024-01-19$9.67$9.67345,100
2024-01-18$9.75$9.75595,600
2024-01-17$10.24$10.241,254,500
2024-01-16$9.72$9.72346,300
2024-01-12$10.11$10.11180,800
2024-01-11$10.06$10.06369,400
2024-01-10$10.39$10.39324,500
2024-01-09$10.22$10.22527,500
2024-01-08$10.79$10.79457,400
2024-01-05$11.43$11.43621,400
2024-01-04$11.34$11.34691,000
2024-01-03$10.91$10.91748,100
2024-01-02$10.84$10.84321,200