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 — 2019

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2019-12-31$7.85$7.85164,600
2019-12-30$7.88$7.88188,900
2019-12-27$8.02$8.02202,000
2019-12-26$8.15$8.15246,000
2019-12-24$8.07$8.07218,700
2019-12-23$7.84$7.84393,800
2019-12-20$7.72$7.72347,800
2019-12-19$7.75$7.75372,900
2019-12-18$7.52$7.52215,600
2019-12-17$7.70$7.70193,400
2019-12-16$7.76$7.76153,000
2019-12-13$7.90$7.90167,500
2019-12-12$7.77$7.77191,600
2019-12-11$7.52$7.52185,900
2019-12-10$7.61$7.61112,100
2019-12-09$7.83$7.83120,600
2019-12-06$7.87$7.87259,000
2019-12-05$7.53$7.53323,000
2019-12-04$7.62$7.62265,900
2019-12-03$7.83$7.83193,000
2019-12-02$7.90$7.90317,300
2019-11-29$8.35$8.35162,300
2019-11-27$8.60$8.60156,000
2019-11-26$8.49$8.49225,900
2019-11-25$8.62$8.62457,000
2019-11-22$8.70$8.70874,100
2019-11-21$8.05$8.05161,500
2019-11-20$8.01$8.01241,800
2019-11-19$8.03$8.03295,700
2019-11-18$7.76$7.76263,200
2019-11-15$7.78$7.78302,500
2019-11-14$7.48$7.48212,000
2019-11-13$7.51$7.51151,600
2019-11-12$7.67$7.67182,900
2019-11-11$7.61$7.61219,600
2019-11-08$7.93$7.93116,700
2019-11-07$8.05$8.05198,400
2019-11-06$8.05$8.05326,900
2019-11-05$8.36$8.36181,300
2019-11-04$8.23$8.23127,800
2019-11-01$8.08$8.08124,300
2019-10-31$7.83$7.83152,200
2019-10-30$8.32$8.32100,700
2019-10-29$8.36$8.36185,800
2019-10-28$8.74$8.74189,400
2019-10-25$9.30$9.30159,600
2019-10-24$9.10$9.10308,800
2019-10-23$9.47$9.47208,500
2019-10-22$9.05$9.05195,000
2019-10-21$8.52$8.5276,700
2019-10-18$8.27$8.2768,700
2019-10-17$8.24$8.2497,800
2019-10-16$8.19$8.1988,200
2019-10-15$8.25$8.25114,200
2019-10-14$8.06$8.0672,500
2019-10-11$8.31$8.31141,000
2019-10-10$8.04$8.04104,000
2019-10-09$8.03$8.03173,200
2019-10-08$7.84$7.84128,100
2019-10-07$7.77$7.7775,500
2019-10-04$7.82$7.8278,400
2019-10-03$7.64$7.64223,400
2019-10-02$7.74$7.74109,700
2019-10-01$7.62$7.62141,900
2019-09-30$7.84$7.84160,200
2019-09-27$7.84$7.84140,700
2019-09-26$7.76$7.76165,400
2019-09-25$7.96$7.96152,800
2019-09-24$8.18$8.18195,400
2019-09-23$8.72$8.72150,000
2019-09-20$9.07$9.07539,700
2019-09-19$8.68$8.6879,400
2019-09-18$8.64$8.64187,600
2019-09-17$8.91$8.91140,700
2019-09-16$8.75$8.75191,100
2019-09-13$8.84$8.84140,700
2019-09-12$8.94$8.94165,100
2019-09-11$9.64$9.64583,200
2019-09-10$8.67$8.67298,700
2019-09-09$8.35$8.35172,600
2019-09-06$7.87$7.87125,700
2019-09-05$7.66$7.66175,900
2019-09-04$7.40$7.40108,300
2019-09-03$7.37$7.37121,400
2019-08-30$7.67$7.67103,900
2019-08-29$7.77$7.77162,400
2019-08-28$7.58$7.58155,500
2019-08-27$7.45$7.45180,400
2019-08-26$7.61$7.61133,000
2019-08-23$7.50$7.50239,400
2019-08-22$7.85$7.85129,500
2019-08-21$8.20$8.20130,300
2019-08-20$7.85$7.85123,200
2019-08-19$8.12$8.12126,000
2019-08-16$7.92$7.92221,300
2019-08-15$7.54$7.54135,000
2019-08-14$7.47$7.47205,000
2019-08-13$7.84$7.84219,400
2019-08-12$7.81$7.81126,500
2019-08-09$8.10$8.10159,100
2019-08-08$8.55$8.55217,900
2019-08-07$8.60$8.60355,600
2019-08-06$7.57$7.57129,700
2019-08-05$7.51$7.51211,900
2019-08-02$8.06$8.06252,100
2019-08-01$8.51$8.51134,600
2019-07-31$8.89$8.89147,300
2019-07-30$9.01$9.01210,600
2019-07-29$8.78$8.78144,600
2019-07-26$8.81$8.81159,400
2019-07-25$8.59$8.59124,100
2019-07-24$8.95$8.95129,400
2019-07-23$9.05$9.05102,200
2019-07-22$9.14$9.14170,300
2019-07-19$8.94$8.94186,800
2019-07-18$9.39$9.39149,500
2019-07-17$9.40$9.40115,300
2019-07-16$9.35$9.35149,100
2019-07-15$9.26$9.26157,300
2019-07-12$9.55$9.55165,100
2019-07-11$9.24$9.24207,400
2019-07-10$9.46$9.46170,800
2019-07-09$9.25$9.25359,100
2019-07-08$9.96$9.96362,000
2019-07-05$9.64$9.64202,700
2019-07-03$9.67$9.67138,900
2019-07-02$9.55$9.55333,300
2019-07-01$10.11$10.11726,300
2019-06-28$9.28$9.282,582,800
2019-06-27$8.76$8.76953,400
2019-06-26$8.43$8.43191,900
2019-06-25$8.34$8.34225,200
2019-06-24$8.29$8.29299,300
2019-06-21$8.59$8.59246,900
2019-06-20$8.40$8.40238,300
2019-06-19$8.56$8.56165,500
2019-06-18$8.57$8.57313,100
2019-06-17$8.33$8.33257,400
2019-06-14$8.48$8.48149,500
2019-06-13$8.79$8.79217,500
2019-06-12$8.62$8.62272,900
2019-06-11$8.31$8.31400,200
2019-06-10$8.23$8.23375,300
2019-06-07$8.28$8.28457,300
2019-06-06$8.31$8.31916,800
2019-06-05$10.08$10.08392,100
2019-06-04$9.91$9.91256,600
2019-06-03$9.81$9.81252,300
2019-05-31$9.73$9.73257,700
2019-05-30$10.45$10.45228,800
2019-05-29$10.62$10.62128,000
2019-05-28$11.05$11.05218,900
2019-05-24$10.68$10.68190,400
2019-05-23$10.44$10.44241,700
2019-05-22$10.60$10.60173,200
2019-05-21$11.40$11.40337,600
2019-05-20$11.12$11.1293,900
2019-05-17$11.14$11.14126,800
2019-05-16$11.27$11.27223,900
2019-05-15$11.20$11.20158,000
2019-05-14$11.00$11.00188,300
2019-05-13$10.66$10.66188,900
2019-05-10$11.09$11.09184,200
2019-05-09$11.02$11.02322,800
2019-05-08$11.05$11.05185,700
2019-05-07$11.03$11.03206,900
2019-05-06$10.86$10.86332,600
2019-05-03$10.90$10.90255,800
2019-05-02$10.75$10.75232,900
2019-05-01$11.02$11.02284,800
2019-04-30$11.04$11.04360,400
2019-04-29$11.59$11.59228,800
2019-04-26$11.90$11.90251,600
2019-04-25$11.85$11.85154,100
2019-04-24$12.07$12.07133,300
2019-04-23$11.91$11.91149,200
2019-04-22$11.71$11.71116,700
2019-04-18$11.66$11.66254,800
2019-04-17$11.58$11.58409,100
2019-04-16$11.85$11.85307,600
2019-04-15$12.26$12.26738,200
2019-04-12$12.73$12.73233,700
2019-04-11$13.43$13.43161,800
2019-04-10$12.96$12.96226,000
2019-04-09$12.60$12.60154,500
2019-04-08$12.89$12.89352,200
2019-04-05$12.74$12.74149,600
2019-04-04$12.60$12.60241,700
2019-04-03$12.73$12.73251,100
2019-04-02$12.69$12.69325,600
2019-04-01$12.18$12.18438,000
2019-03-29$12.86$12.86533,800
2019-03-28$13.67$13.67496,800
2019-03-27$13.21$13.21662,600
2019-03-26$13.10$13.10939,800
2019-03-25$13.08$13.081,622,400
2019-03-22$12.14$12.14548,500
2019-03-21$12.88$12.88419,800
2019-03-20$13.41$13.41305,900
2019-03-19$13.78$13.78546,500
2019-03-18$14.00$14.00500,100
2019-03-15$14.15$14.15466,000
2019-03-14$15.14$15.14239,600
2019-03-13$15.53$15.53518,500
2019-03-12$15.69$15.69421,700
2019-03-11$15.56$15.56695,500
2019-03-08$14.46$14.46244,900
2019-03-07$14.62$14.62598,500
2019-03-06$13.96$13.96402,700
2019-03-05$14.49$14.49169,800
2019-03-04$14.79$14.79354,300
2019-03-01$14.74$14.74525,700
2019-02-28$14.83$14.83332,800
2019-02-27$15.04$15.04415,300
2019-02-26$15.24$15.24560,100
2019-02-25$15.69$15.69331,900
2019-02-22$16.06$16.06334,900
2019-02-21$16.00$16.00333,500
2019-02-20$15.75$15.75451,600
2019-02-19$15.69$15.69501,300
2019-02-15$15.01$15.01476,200
2019-02-14$15.80$15.80344,600
2019-02-13$15.42$15.42423,200
2019-02-12$15.33$15.33552,700
2019-02-11$15.08$15.08549,100
2019-02-08$14.40$14.40436,900
2019-02-07$14.54$14.54604,100
2019-02-06$13.88$13.88876,000
2019-02-05$12.47$12.47457,300
2019-02-04$12.85$12.85723,600
2019-02-01$13.81$13.81671,100
2019-01-31$13.07$13.07200,700
2019-01-30$12.82$12.82206,500
2019-01-29$12.58$12.58204,500
2019-01-28$12.63$12.63220,600
2019-01-25$12.77$12.77394,500
2019-01-24$12.18$12.18209,800
2019-01-23$11.82$11.82137,700
2019-01-22$11.78$11.78254,200
2019-01-18$11.97$11.97263,400
2019-01-17$12.10$12.10201,200
2019-01-16$11.87$11.87144,100
2019-01-15$11.74$11.74311,600
2019-01-14$12.28$12.28287,700
2019-01-11$11.75$11.7599,600
2019-01-10$11.90$11.90154,600
2019-01-09$11.76$11.76262,200
2019-01-08$11.75$11.75255,600
2019-01-07$11.23$11.23236,100
2019-01-04$10.90$10.90281,300
2019-01-03$10.85$10.85207,100
2019-01-02$11.75$11.75245,600