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 — 2004

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2004-12-31$148.90$148.9011,470
2004-12-30$150.40$150.405,060
2004-12-29$149.90$149.906,780
2004-12-28$150.70$150.7011,970
2004-12-27$150.00$150.0011,680
2004-12-23$150.00$150.0011,850
2004-12-22$149.30$149.3016,880
2004-12-21$148.50$148.5011,770
2004-12-20$149.30$149.3012,820
2004-12-17$150.30$150.3018,520
2004-12-16$150.30$150.3017,960
2004-12-15$150.70$150.7043,200
2004-12-14$149.50$149.5038,080
2004-12-13$144.60$144.6036,430
2004-12-10$137.20$137.2012,120
2004-12-09$137.80$137.8012,340
2004-12-08$136.40$136.4022,020
2004-12-07$137.40$137.4025,360
2004-12-06$140.20$140.2022,780
2004-12-03$137.10$137.109,660
2004-12-02$140.80$140.8013,260
2004-12-01$140.70$140.7022,130
2004-11-30$138.50$138.5020,930
2004-11-29$140.80$140.8023,340
2004-11-26$139.60$139.6013,640
2004-11-24$138.10$138.1055,210
2004-11-23$122.30$122.3011,480
2004-11-22$126.10$126.1018,650
2004-11-19$116.60$116.6012,920
2004-11-18$122.00$122.005,930
2004-11-17$122.70$122.708,680
2004-11-16$120.70$120.7013,440
2004-11-15$122.40$122.4010,480
2004-11-12$122.60$122.6017,730
2004-11-11$125.50$125.5020,530
2004-11-10$123.30$123.309,270
2004-11-09$120.70$120.707,220
2004-11-08$122.20$122.208,580
2004-11-05$122.70$122.709,860
2004-11-04$123.50$123.5021,270
2004-11-03$122.00$122.0027,020
2004-11-02$119.00$119.0021,940
2004-11-01$115.60$115.609,920
2004-10-29$115.60$115.6010,760
2004-10-28$113.10$113.1013,080
2004-10-27$115.20$115.2021,780
2004-10-26$113.60$113.6034,070
2004-10-25$108.10$108.1015,880
2004-10-22$108.30$108.3015,720
2004-10-21$112.10$112.1022,250
2004-10-20$106.80$106.8013,260
2004-10-19$107.10$107.1017,080
2004-10-18$107.00$107.0018,690
2004-10-15$108.30$108.3020,450
2004-10-14$109.90$109.9017,790
2004-10-13$118.10$118.1013,670
2004-10-12$117.70$117.708,840
2004-10-11$118.00$118.0014,200
2004-10-08$121.00$121.0013,040
2004-10-07$126.30$126.3017,360
2004-10-06$124.80$124.8010,340
2004-10-05$124.30$124.3019,720
2004-10-04$128.90$128.9018,840
2004-10-01$127.50$127.5012,620
2004-09-30$124.20$124.2012,930
2004-09-29$122.40$122.4010,370
2004-09-28$119.50$119.5015,510
2004-09-27$117.10$117.1013,360
2004-09-24$119.50$119.5013,190
2004-09-23$119.60$119.6012,300
2004-09-22$123.00$123.0014,800
2004-09-21$128.50$128.506,670
2004-09-20$128.80$128.807,640
2004-09-17$129.30$129.3015,140
2004-09-16$129.00$129.008,920
2004-09-15$128.60$128.607,560
2004-09-14$128.60$128.608,700
2004-09-13$130.00$130.0011,600
2004-09-10$126.40$126.408,380
2004-09-09$123.90$123.9012,730
2004-09-08$123.60$123.6020,800
2004-09-07$125.50$125.5020,020
2004-09-03$125.00$125.0022,250
2004-09-02$128.60$128.6021,680
2004-09-01$124.60$124.6019,600
2004-08-31$119.50$119.509,320
2004-08-30$118.00$118.0015,220
2004-08-27$116.00$116.009,500
2004-08-26$113.10$113.109,730
2004-08-25$113.20$113.207,560
2004-08-24$111.00$111.0015,230
2004-08-23$110.00$110.0015,610
2004-08-20$111.00$111.0017,900
2004-08-19$109.00$109.0014,460
2004-08-18$109.00$109.0011,530
2004-08-17$105.40$105.4010,330
2004-08-16$103.40$103.4010,390
2004-08-13$97.40$97.409,530
2004-08-12$99.60$99.6010,040
2004-08-11$102.20$102.2012,760
2004-08-10$104.20$104.2017,170
2004-08-09$97.40$97.4017,410
2004-08-06$100.70$100.7019,220
2004-08-05$102.10$102.1035,660
2004-08-04$92.40$92.4010,140
2004-08-03$93.80$93.8011,500
2004-08-02$96.60$96.6015,960
2004-07-30$101.40$101.4015,470
2004-07-29$99.00$99.0027,120
2004-07-28$99.20$99.2018,130
2004-07-27$93.30$93.3019,090
2004-07-26$92.20$92.2018,650
2004-07-23$95.80$95.8019,390
2004-07-22$101.70$101.7020,810
2004-07-21$100.10$100.1016,250
2004-07-20$108.00$108.0032,440
2004-07-19$102.90$102.9018,930
2004-07-16$108.30$108.3021,410
2004-07-15$109.00$109.008,560
2004-07-14$111.00$111.0010,550
2004-07-13$112.80$112.8013,090
2004-07-12$114.50$114.5012,890
2004-07-09$117.30$117.309,900
2004-07-08$116.20$116.2021,710
2004-07-07$121.60$121.6013,280
2004-07-06$122.70$122.7019,870
2004-07-02$125.40$125.4012,240
2004-07-01$128.30$128.3011,770
2004-06-30$130.80$130.8012,360
2004-06-29$131.10$131.1019,410
2004-06-28$130.30$130.3022,930
2004-06-25$136.50$136.50165,450
2004-06-24$139.10$139.1033,790
2004-06-23$136.80$136.8011,040
2004-06-22$136.60$136.6013,360
2004-06-21$136.00$136.0026,920
2004-06-18$130.10$130.1011,940
2004-06-17$127.30$127.3018,440
2004-06-16$125.00$125.0010,240
2004-06-15$125.90$125.9012,230
2004-06-14$123.80$123.8014,670
2004-06-10$123.80$123.808,190
2004-06-09$122.60$122.606,690
2004-06-08$124.10$124.104,680
2004-06-07$127.40$127.407,760
2004-06-04$122.60$122.605,010
2004-06-03$123.80$123.808,150
2004-06-02$125.50$125.507,960
2004-06-01$125.90$125.908,520
2004-05-28$125.60$125.607,180
2004-05-27$125.50$125.5015,560
2004-05-26$127.00$127.009,070
2004-05-25$125.10$125.1013,300
2004-05-24$119.50$119.5014,220
2004-05-21$116.90$116.9011,800
2004-05-20$116.10$116.108,470
2004-05-19$118.60$118.6010,640
2004-05-18$122.60$122.6011,660
2004-05-17$115.20$115.2019,380
2004-05-14$120.10$120.1016,730
2004-05-13$120.00$120.0030,170
2004-05-12$115.00$115.0037,170
2004-05-11$120.30$120.3034,190
2004-05-10$123.20$123.2026,390
2004-05-07$128.20$128.2011,000
2004-05-06$128.00$128.0013,280
2004-05-05$130.70$130.708,340
2004-05-04$128.60$128.609,330
2004-05-03$128.60$128.6016,980
2004-04-30$126.30$126.3021,560
2004-04-29$130.70$130.7020,040
2004-04-28$136.30$136.3017,180
2004-04-27$137.70$137.7013,380
2004-04-26$139.40$139.409,800
2004-04-23$143.50$143.5011,250
2004-04-22$141.70$141.7016,430
2004-04-21$139.60$139.6012,880
2004-04-20$139.00$139.0016,860
2004-04-19$140.80$140.8014,500
2004-04-16$140.90$140.9011,490
2004-04-15$139.20$139.2015,040
2004-04-14$139.60$139.6011,160
2004-04-13$142.00$142.0023,390
2004-04-12$149.50$149.5027,480
2004-04-08$145.80$145.8024,220
2004-04-07$143.50$143.5027,090
2004-04-06$140.40$140.4023,530
2004-04-05$138.50$138.5015,650
2004-04-02$135.00$135.0015,940
2004-04-01$132.50$132.5026,020
2004-03-31$128.40$128.4016,730
2004-03-30$129.10$129.1024,940
2004-03-29$132.80$132.8042,880
2004-03-26$121.80$121.8019,360
2004-03-25$117.00$117.0015,580
2004-03-24$113.00$113.0019,830
2004-03-23$115.90$115.9024,040
2004-03-22$117.80$117.8019,650
2004-03-19$118.10$118.1040,790
2004-03-18$116.50$116.5019,050
2004-03-17$121.10$121.1023,920
2004-03-16$115.40$115.4027,060
2004-03-15$118.90$118.9021,140
2004-03-12$123.90$123.9026,040
2004-03-11$122.90$122.9047,210
2004-03-10$124.60$124.6025,720
2004-03-09$125.20$125.2019,290
2004-03-08$127.60$127.6018,330
2004-03-05$130.80$130.8040,410
2004-03-04$125.50$125.5047,190
2004-03-03$129.60$129.6065,980
2004-03-02$133.60$133.6031,550
2004-03-01$137.00$137.0019,750
2004-02-27$137.90$137.9019,020
2004-02-26$141.00$141.0033,660
2004-02-25$137.80$137.8047,160
2004-02-24$135.30$135.3056,940
2004-02-23$144.80$144.8026,110
2004-02-20$150.70$150.7028,790
2004-02-19$156.70$156.7015,330
2004-02-18$159.90$159.9014,710
2004-02-17$160.00$160.0020,380
2004-02-13$156.10$156.1018,040
2004-02-12$159.20$159.2027,660
2004-02-11$159.90$159.9019,710
2004-02-10$156.60$156.6012,690
2004-02-09$152.80$152.8041,930
2004-02-06$154.90$154.9036,780
2004-02-05$152.30$152.3068,880
2004-02-04$162.90$162.9024,570
2004-02-03$170.90$170.9022,370
2004-02-02$163.00$163.0035,300
2004-01-30$166.10$166.1030,520
2004-01-29$155.60$155.6044,060
2004-01-28$159.50$159.5094,770
2004-01-27$183.00$183.0038,210
2004-01-26$190.30$190.3058,650
2004-01-23$176.90$176.9052,090
2004-01-22$185.50$185.5058,530
2004-01-21$196.90$196.9053,050
2004-01-20$183.90$183.9043,310
2004-01-16$167.00$167.0016,500
2004-01-15$166.60$166.6020,770
2004-01-14$169.10$169.1048,050
2004-01-13$162.60$162.6021,790
2004-01-12$167.70$167.7029,320
2004-01-09$165.00$165.0045,430
2004-01-08$164.00$164.0038,960
2004-01-07$156.30$156.3050,110
2004-01-06$151.10$151.1049,010
2004-01-05$143.90$143.9031,950
2004-01-02$137.10$137.1024,350