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 — 1992

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1992-12-31$133.33$133.338,160
1992-12-30$136.67$136.677,380
1992-12-29$131.67$131.672,250
1992-12-28$126.67$126.671,155
1992-12-24$123.33$123.331,905
1992-12-23$123.33$123.333,795
1992-12-22$113.33$113.331,005
1992-12-21$113.33$113.33585
1992-12-18$118.33$118.335,175
1992-12-17$110.00$110.003,270
1992-12-16$113.33$113.331,365
1992-12-15$110.00$110.001,500
1992-12-14$111.67$111.672,820
1992-12-11$111.67$111.679,480
1992-12-10$111.67$111.674,410
1992-12-09$110.00$110.00945
1992-12-08$113.33$113.333,510
1992-12-07$115.83$115.831,635
1992-12-04$113.33$113.334,920
1992-12-03$121.67$121.672,295
1992-12-02$120.00$120.0038,025
1992-12-01$116.67$116.671,815
1992-11-30$121.67$121.67630
1992-11-27$115.00$115.00645
1992-11-25$121.67$121.672,010
1992-11-24$116.67$116.672,730
1992-11-23$116.67$116.671,530
1992-11-20$121.67$121.67420
1992-11-19$121.67$121.67225
1992-11-18$121.67$121.671,500
1992-11-17$121.67$121.67510
1992-11-16$121.67$121.6790
1992-11-13$121.67$121.67915
1992-11-12$116.67$116.671,890
1992-11-11$116.67$116.671,725
1992-11-10$121.67$121.673,315
1992-11-09$126.67$126.677,920
1992-11-06$120.00$120.007,695
1992-11-05$118.33$118.333,435
1992-11-04$118.33$118.331,935
1992-11-03$113.33$113.33300
1992-11-02$113.33$113.33570
1992-10-30$113.33$113.33615
1992-10-29$113.33$113.33495
1992-10-28$113.33$113.33900
1992-10-27$113.33$113.333,825
1992-10-26$114.17$114.172,520
1992-10-23$116.67$116.679,375
1992-10-22$98.33$98.334,530
1992-10-21$96.67$96.6715,855
1992-10-20$100.00$100.001,350
1992-10-19$95.00$95.001,320
1992-10-16$93.33$93.331,170
1992-10-15$95.00$95.00840
1992-10-14$95.00$95.001,305
1992-10-13$95.00$95.00315
1992-10-12$88.33$88.33195
1992-10-09$95.00$95.001,080
1992-10-08$91.67$91.676,825
1992-10-07$85.00$85.0017,220
1992-10-06$83.33$83.33390
1992-10-05$86.67$86.672,820
1992-10-02$88.33$88.332,340
1992-10-01$93.33$93.331,695
1992-09-30$86.67$86.672,445
1992-09-29$91.67$91.67630
1992-09-28$91.67$91.673,285
1992-09-25$98.33$98.335,505
1992-09-24$99.17$99.17975
1992-09-23$103.33$103.33825
1992-09-22$100.00$100.002,595
1992-09-21$103.33$103.3360
1992-09-18$100.00$100.00210
1992-09-17$105.00$105.00315
1992-09-16$100.83$100.83960
1992-09-15$100.00$100.0090
1992-09-14$100.83$100.836,855
1992-09-11$100.00$100.00510
1992-09-10$100.83$100.83105
1992-09-09$103.33$103.33585
1992-09-08$106.67$106.67495
1992-09-04$102.50$102.50525
1992-09-03$102.50$102.501,845
1992-09-02$105.83$105.830
1992-09-01$105.83$105.8390
1992-08-31$106.67$106.6730
1992-08-28$103.33$103.33165
1992-08-27$100.00$100.003,150
1992-08-26$102.50$102.50435
1992-08-25$101.67$101.67495
1992-08-24$101.67$101.67450
1992-08-21$105.00$105.003,375
1992-08-20$108.33$108.33990
1992-08-19$100.00$100.001,845
1992-08-18$108.33$108.3375
1992-08-17$101.67$101.67165
1992-08-14$110.00$110.00780
1992-08-13$101.67$101.676,180
1992-08-12$111.67$111.671,920
1992-08-11$113.33$113.33870
1992-08-10$116.67$116.6775
1992-08-07$121.67$121.67945
1992-08-06$121.67$121.67210
1992-08-05$117.50$117.502,160
1992-08-04$118.33$118.331,410
1992-08-03$120.00$120.001,410
1992-07-31$121.67$121.673,210
1992-07-30$119.17$119.173,735
1992-07-29$126.67$126.674,605
1992-07-28$125.00$125.009,285
1992-07-27$118.33$118.3310,545
1992-07-24$108.33$108.335,250
1992-07-23$100.83$100.831,890
1992-07-22$105.00$105.0090
1992-07-21$104.17$104.173,060
1992-07-20$105.00$105.004,755
1992-07-17$103.33$103.332,400
1992-07-16$106.67$106.671,140
1992-07-15$105.00$105.00645
1992-07-14$106.67$106.67285
1992-07-13$106.67$106.671,245
1992-07-10$106.67$106.67210
1992-07-09$106.67$106.671,800
1992-07-08$106.67$106.672,685
1992-07-07$108.33$108.33885
1992-07-06$101.67$101.672,715
1992-07-02$103.33$103.337,230
1992-07-01$106.67$106.673,945
1992-06-30$113.33$113.338,340
1992-06-29$102.50$102.501,815
1992-06-26$103.33$103.336,405
1992-06-25$100.83$100.836,225
1992-06-24$101.67$101.673,795
1992-06-23$98.33$98.33240
1992-06-22$101.67$101.67285
1992-06-19$100.00$100.002,820
1992-06-18$101.67$101.67390
1992-06-17$101.67$101.676,030
1992-06-16$103.33$103.338,850
1992-06-15$96.67$96.673,675
1992-06-12$100.00$100.0015,060
1992-06-11$95.00$95.001,275
1992-06-10$100.00$100.003,450
1992-06-09$96.67$96.677,785
1992-06-08$101.67$101.6716,110
1992-06-05$97.50$97.5016,230
1992-06-04$95.00$95.0015,975
1992-06-03$93.33$93.33735
1992-06-02$93.33$93.331,470
1992-06-01$93.33$93.331,470
1992-05-29$86.67$86.6715,900
1992-05-28$86.67$86.677,095
1992-05-27$90.83$90.833,150
1992-05-26$89.17$89.172,595
1992-05-22$91.67$91.67615
1992-05-21$91.67$91.6730
1992-05-20$91.67$91.675,400
1992-05-19$93.33$93.331,290
1992-05-18$88.33$88.33600
1992-05-15$88.33$88.331,815
1992-05-14$89.17$89.172,685
1992-05-13$92.50$92.502,100
1992-05-12$92.50$92.5010,785
1992-05-11$94.17$94.172,550
1992-05-08$93.33$93.3321,975
1992-05-07$86.67$86.673,510
1992-05-06$85.00$85.006,000
1992-05-05$90.00$90.0015,315
1992-05-04$86.67$86.672,790
1992-05-01$86.67$86.674,305
1992-04-30$93.33$93.332,640
1992-04-29$86.67$86.673,255
1992-04-28$71.67$71.6711,820
1992-04-27$73.33$73.335,355
1992-04-24$63.33$63.3310,680
1992-04-23$71.67$71.6710,875
1992-04-22$90.00$90.001,080
1992-04-21$93.33$93.338,580
1992-04-20$106.67$106.671,380
1992-04-16$110.00$110.004,245
1992-04-15$105.00$105.00720
1992-04-14$110.00$110.00825
1992-04-13$110.00$110.0015
1992-04-10$110.00$110.003,705
1992-04-09$101.67$101.673,435
1992-04-08$100.00$100.002,310
1992-04-07$111.67$111.6716,215
1992-04-06$107.50$107.50300
1992-04-03$110.00$110.004,980
1992-04-02$106.67$106.671,485
1992-04-01$106.67$106.67780
1992-03-31$120.00$120.0019,035
1992-03-30$123.33$123.33480
1992-03-27$123.33$123.334,935
1992-03-26$115.00$115.004,875
1992-03-25$111.67$111.678,160
1992-03-24$133.33$133.33840
1992-03-23$132.50$132.503,150
1992-03-20$131.67$131.67435
1992-03-19$128.33$128.331,845
1992-03-18$133.33$133.3390,885
1992-03-17$140.00$140.00120
1992-03-16$131.67$131.671,905
1992-03-13$145.00$145.00345
1992-03-12$146.67$146.6728,440
1992-03-11$135.00$135.00870
1992-03-10$135.00$135.0026,550
1992-03-09$160.00$160.00480
1992-03-06$158.33$158.331,665
1992-03-05$160.00$160.001,215
1992-03-04$146.67$146.673,015
1992-03-03$143.33$143.3334,530
1992-03-02$153.33$153.331,590
1992-02-28$148.33$148.332,655
1992-02-27$160.00$160.00660
1992-02-26$158.33$158.33330
1992-02-25$153.33$153.332,040
1992-02-24$161.67$161.6775
1992-02-21$158.33$158.331,320
1992-02-20$171.67$171.676,540
1992-02-19$175.00$175.001,440
1992-02-18$176.67$176.673,165
1992-02-14$165.00$165.003,315
1992-02-13$157.50$157.503,015
1992-02-12$151.67$151.672,340
1992-02-11$161.67$161.676,240
1992-02-10$146.67$146.67660
1992-02-07$146.67$146.67720
1992-02-06$147.50$147.500
1992-02-05$147.50$147.501,755
1992-02-04$148.33$148.330
1992-02-03$148.33$148.331,770
1992-01-31$143.33$143.337,665
1992-01-30$143.33$143.337,185
1992-01-29$153.33$153.332,580
1992-01-28$153.33$153.3312,600
1992-01-27$145.00$145.001,875
1992-01-24$144.17$144.174,605
1992-01-23$146.67$146.679,255
1992-01-22$140.00$140.0060
1992-01-21$143.33$143.331,575
1992-01-20$146.67$146.6729,865
1992-01-17$150.00$150.00630
1992-01-16$151.67$151.673,750
1992-01-15$151.67$151.671,320
1992-01-14$141.67$141.675,535
1992-01-13$140.00$140.001,740
1992-01-10$150.00$150.0011,910
1992-01-09$146.67$146.67285
1992-01-08$146.67$146.67105
1992-01-07$151.67$151.67120
1992-01-06$155.00$155.001,830
1992-01-03$163.33$163.333,300
1992-01-02$168.33$168.3313,785