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 — 1993

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1993-12-31$240.00$240.002,895
1993-12-30$228.33$228.332,145
1993-12-29$220.00$220.006,600
1993-12-28$211.67$211.672,475
1993-12-27$220.00$220.0011,355
1993-12-23$220.00$220.002,700
1993-12-22$211.67$211.672,580
1993-12-21$220.00$220.003,810
1993-12-20$216.67$216.674,200
1993-12-17$220.00$220.001,515
1993-12-16$220.00$220.001,980
1993-12-15$216.67$216.674,770
1993-12-14$216.67$216.671,320
1993-12-13$218.33$218.332,175
1993-12-10$226.67$226.672,985
1993-12-09$228.33$228.331,785
1993-12-08$228.33$228.331,830
1993-12-07$226.67$226.676,345
1993-12-06$226.67$226.674,845
1993-12-03$206.67$206.6751,105
1993-12-02$198.33$198.331,200
1993-12-01$193.33$193.336,525
1993-11-30$198.33$198.3312,195
1993-11-29$191.67$191.6713,005
1993-11-26$176.67$176.675,595
1993-11-24$175.00$175.001,065
1993-11-23$173.33$173.3375
1993-11-22$173.33$173.331,365
1993-11-19$175.00$175.00120
1993-11-18$175.83$175.83360
1993-11-17$176.67$176.674,350
1993-11-16$175.83$175.833,465
1993-11-15$175.00$175.002,820
1993-11-12$171.67$171.67480
1993-11-11$173.33$173.33225
1993-11-10$170.83$170.83975
1993-11-09$170.00$170.001,095
1993-11-08$171.67$171.672,910
1993-11-05$165.00$165.005,475
1993-11-04$160.00$160.00675
1993-11-03$161.67$161.671,470
1993-11-02$164.17$164.171,260
1993-11-01$168.33$168.33540
1993-10-29$168.33$168.33510
1993-10-28$160.00$160.004,920
1993-10-27$176.67$176.671,095
1993-10-26$176.67$176.67270
1993-10-25$171.67$171.671,590
1993-10-22$178.33$178.33120
1993-10-21$178.33$178.33570
1993-10-20$171.67$171.671,035
1993-10-19$173.33$173.3311,205
1993-10-18$178.33$178.33540
1993-10-15$178.33$178.33750
1993-10-14$178.33$178.33150
1993-10-13$178.33$178.33150
1993-10-12$171.67$171.671,245
1993-10-11$171.67$171.671,005
1993-10-08$178.33$178.331,785
1993-10-07$178.33$178.33600
1993-10-06$171.67$171.671,620
1993-10-05$171.67$171.6790
1993-10-04$176.67$176.672,850
1993-10-01$178.33$178.333,705
1993-09-30$178.33$178.3321,585
1993-09-29$168.33$168.33360
1993-09-28$168.33$168.33840
1993-09-27$168.33$168.331,230
1993-09-24$178.33$178.33960
1993-09-23$168.33$168.333,105
1993-09-22$178.33$178.3310,050
1993-09-21$168.33$168.332,175
1993-09-20$173.33$173.332,130
1993-09-17$175.00$175.003,450
1993-09-16$168.33$168.3375
1993-09-15$168.33$168.332,610
1993-09-14$168.33$168.331,890
1993-09-13$168.33$168.335,415
1993-09-10$173.33$173.331,365
1993-09-09$170.00$170.001,560
1993-09-08$171.67$171.671,230
1993-09-07$176.67$176.6790
1993-09-03$172.50$172.501,365
1993-09-02$176.67$176.671,560
1993-09-01$170.00$170.00480
1993-08-31$176.67$176.675,220
1993-08-30$170.00$170.003,360
1993-08-27$178.33$178.33510
1993-08-26$183.33$183.331,650
1993-08-25$175.00$175.0045
1993-08-24$178.33$178.339,075
1993-08-23$175.00$175.002,265
1993-08-20$180.00$180.004,035
1993-08-19$178.33$178.332,040
1993-08-18$178.33$178.336,435
1993-08-17$171.67$171.679,825
1993-08-16$165.00$165.001,275
1993-08-13$167.50$167.50825
1993-08-12$165.00$165.002,175
1993-08-11$165.00$165.003,330
1993-08-10$166.67$166.672,685
1993-08-09$163.33$163.331,740
1993-08-06$166.67$166.679,270
1993-08-05$168.33$168.331,245
1993-08-04$170.00$170.0015,735
1993-08-03$160.00$160.00555
1993-08-02$170.00$170.004,275
1993-07-30$166.67$166.676,450
1993-07-29$166.67$166.67120
1993-07-28$166.67$166.671,155
1993-07-27$166.67$166.675,235
1993-07-26$158.33$158.33930
1993-07-23$165.00$165.005,790
1993-07-22$155.00$155.001,425
1993-07-21$153.33$153.33360
1993-07-20$150.00$150.004,125
1993-07-19$153.33$153.33225
1993-07-16$156.67$156.6775
1993-07-15$150.00$150.00450
1993-07-14$156.67$156.67210
1993-07-13$156.67$156.67615
1993-07-12$150.00$150.00465
1993-07-09$152.50$152.50330
1993-07-08$155.00$155.001,605
1993-07-07$153.33$153.332,595
1993-07-06$163.33$163.333,015
1993-07-02$161.67$161.67675
1993-07-01$160.00$160.00945
1993-06-30$165.00$165.001,440
1993-06-29$156.67$156.67660
1993-06-28$158.33$158.3375
1993-06-25$158.33$158.331,125
1993-06-24$160.00$160.00480
1993-06-23$160.00$160.001,935
1993-06-22$160.00$160.004,590
1993-06-21$163.33$163.331,080
1993-06-18$160.83$160.831,770
1993-06-17$163.33$163.33255
1993-06-16$160.83$160.832,445
1993-06-15$163.33$163.33735
1993-06-14$160.83$160.83930
1993-06-11$168.33$168.331,485
1993-06-10$161.67$161.675,160
1993-06-09$160.00$160.00870
1993-06-08$166.67$166.67990
1993-06-07$171.67$171.67210
1993-06-04$170.00$170.00300
1993-06-03$165.00$165.00840
1993-06-02$163.33$163.331,005
1993-06-01$173.33$173.332,115
1993-05-28$165.00$165.00825
1993-05-27$175.00$175.00945
1993-05-26$166.67$166.674,545
1993-05-25$180.00$180.003,015
1993-05-24$178.33$178.332,085
1993-05-21$185.00$185.0011,010
1993-05-20$165.00$165.004,080
1993-05-19$173.33$173.332,100
1993-05-18$168.33$168.335,040
1993-05-17$171.67$171.67225
1993-05-14$166.67$166.6715,705
1993-05-13$165.00$165.001,995
1993-05-12$170.00$170.0010,515
1993-05-11$178.33$178.336,675
1993-05-10$166.67$166.6710,185
1993-05-07$163.33$163.3334,695
1993-05-06$156.67$156.673,195
1993-05-05$151.67$151.6768,535
1993-05-04$158.33$158.33825
1993-05-03$158.33$158.334,215
1993-04-30$156.67$156.672,340
1993-04-29$155.00$155.004,845
1993-04-28$146.67$146.672,250
1993-04-27$146.67$146.673,840
1993-04-26$145.00$145.00375
1993-04-23$141.67$141.67120
1993-04-22$139.17$139.17300
1993-04-21$145.00$145.00240
1993-04-20$133.33$133.3330
1993-04-19$145.00$145.00375
1993-04-16$140.00$140.008,865
1993-04-15$137.50$137.5010,020
1993-04-14$136.67$136.671,980
1993-04-13$138.33$138.330
1993-04-12$138.33$138.332,595
1993-04-08$138.33$138.335,535
1993-04-07$126.67$126.672,040
1993-04-06$126.67$126.672,370
1993-04-05$126.67$126.67765
1993-04-02$128.33$128.331,470
1993-04-01$128.33$128.3330
1993-03-31$133.33$133.331,290
1993-03-30$135.00$135.001,650
1993-03-29$133.33$133.334,290
1993-03-26$135.00$135.00765
1993-03-25$133.33$133.33750
1993-03-24$130.83$130.833,360
1993-03-23$134.17$134.176,570
1993-03-22$133.33$133.336,855
1993-03-19$140.83$140.832,910
1993-03-18$140.00$140.002,025
1993-03-17$140.00$140.001,515
1993-03-16$140.00$140.00735
1993-03-15$143.33$143.334,275
1993-03-12$146.67$146.67270
1993-03-11$143.33$143.331,980
1993-03-10$143.33$143.338,295
1993-03-09$140.00$140.00960
1993-03-08$146.67$146.671,815
1993-03-05$141.67$141.671,500
1993-03-04$148.33$148.3375
1993-03-03$143.33$143.331,845
1993-03-02$148.33$148.3312,210
1993-03-01$138.33$138.339,600
1993-02-26$143.33$143.334,665
1993-02-25$138.33$138.3312,675
1993-02-24$143.33$143.3310,575
1993-02-23$135.00$135.001,470
1993-02-22$135.00$135.00720
1993-02-19$138.33$138.33225
1993-02-18$131.67$131.67330
1993-02-17$136.67$136.671,710
1993-02-16$133.33$133.332,850
1993-02-12$145.83$145.833,780
1993-02-11$143.33$143.3326,220
1993-02-10$143.33$143.33960
1993-02-09$138.33$138.33480
1993-02-08$142.50$142.507,440
1993-02-05$143.33$143.331,635
1993-02-04$138.33$138.331,560
1993-02-03$139.17$139.1713,590
1993-02-02$136.67$136.675,475
1993-02-01$140.00$140.001,170
1993-01-29$140.00$140.001,215
1993-01-28$135.83$135.83555
1993-01-27$145.00$145.00765
1993-01-26$145.00$145.00480
1993-01-25$135.83$135.83525
1993-01-22$143.33$143.332,565
1993-01-21$139.17$139.172,400
1993-01-20$140.83$140.8356,205
1993-01-19$136.67$136.67240
1993-01-18$136.67$136.67210
1993-01-15$126.67$126.67165
1993-01-14$126.67$126.67525
1993-01-13$136.67$136.671,725
1993-01-12$138.33$138.33945
1993-01-11$130.00$130.00375
1993-01-08$126.67$126.675,310
1993-01-07$146.67$146.67720
1993-01-06$142.50$142.5010,170
1993-01-05$146.67$146.679,090
1993-01-04$135.00$135.008,415