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 — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2008-12-31$163.10$163.1046,530
2008-12-30$155.60$155.60133,720
2008-12-29$157.50$157.5053,060
2008-12-26$168.80$168.8014,870
2008-12-24$166.10$166.1015,490
2008-12-23$165.20$165.2055,110
2008-12-22$160.60$160.6041,780
2008-12-19$164.50$164.5078,400
2008-12-18$159.90$159.9079,520
2008-12-17$158.30$158.3042,730
2008-12-16$157.40$157.4074,830
2008-12-15$143.20$143.2047,460
2008-12-12$150.20$150.2062,970
2008-12-11$140.10$140.1067,720
2008-12-10$155.00$155.0061,630
2008-12-09$150.20$150.20151,770
2008-12-08$161.30$161.30156,280
2008-12-05$143.30$143.30123,630
2008-12-04$127.30$127.30122,910
2008-12-03$132.70$132.7099,690
2008-12-02$125.00$125.0085,440
2008-12-01$110.20$110.2086,710
2008-11-28$130.90$130.9061,200
2008-11-26$139.10$139.10122,150
2008-11-25$115.70$115.70155,090
2008-11-24$117.20$117.20170,030
2008-11-21$96.70$96.70120,090
2008-11-20$85.50$85.50175,700
2008-11-19$90.80$90.80107,590
2008-11-18$102.00$102.0075,950
2008-11-17$102.80$102.8045,100
2008-11-14$109.20$109.2040,530
2008-11-13$120.50$120.5093,780
2008-11-12$109.80$109.8065,990
2008-11-11$127.50$127.5059,860
2008-11-10$136.10$136.1073,270
2008-11-07$137.70$137.7044,190
2008-11-06$128.30$128.3095,530
2008-11-05$142.50$142.5096,250
2008-11-04$154.30$154.30121,590
2008-11-03$132.40$132.4093,610
2008-10-31$125.10$125.1082,970
2008-10-30$124.30$124.3066,260
2008-10-29$110.20$110.20154,740
2008-10-28$103.70$103.7063,640
2008-10-27$99.00$99.0082,860
2008-10-24$111.20$111.2086,770
2008-10-23$116.60$116.6069,960
2008-10-22$132.00$132.0066,440
2008-10-21$151.00$151.0046,710
2008-10-20$161.60$161.6050,340
2008-10-17$152.00$152.0091,860
2008-10-16$149.60$149.60108,400
2008-10-15$130.20$130.2092,510
2008-10-14$149.90$149.9059,860
2008-10-13$162.30$162.3082,430
2008-10-10$130.10$130.10134,700
2008-10-09$129.30$129.3061,460
2008-10-08$142.00$142.00172,680
2008-10-07$132.20$132.2086,510
2008-10-06$149.90$149.90218,580
2008-10-03$185.10$185.1085,170
2008-10-02$194.00$194.0077,490
2008-10-01$219.70$219.7088,000
2008-09-30$235.70$235.7099,530
2008-09-29$246.90$246.90207,130
2008-09-26$221.10$221.1074,580
2008-09-25$223.90$223.9040,880
2008-09-24$214.20$214.2039,060
2008-09-23$221.90$221.9073,260
2008-09-22$220.50$220.5088,410
2008-09-19$237.60$237.60217,350
2008-09-18$211.00$211.00224,980
2008-09-17$174.60$174.60200,980
2008-09-16$171.10$171.10200,680
2008-09-15$170.30$170.30122,800
2008-09-12$187.50$187.50141,770
2008-09-11$189.30$189.30139,670
2008-09-10$189.60$189.60146,350
2008-09-09$195.40$195.40223,510
2008-09-08$217.40$217.40122,230
2008-09-05$218.30$218.30135,880
2008-09-04$226.00$226.00221,230
2008-09-03$237.40$237.40108,150
2008-09-02$243.00$243.0061,730
2008-08-29$245.70$245.7055,010
2008-08-28$251.20$251.2061,830
2008-08-27$251.10$251.1084,860
2008-08-26$240.90$240.9080,640
2008-08-25$239.50$239.5065,390
2008-08-22$254.90$254.9047,580
2008-08-21$252.60$252.6058,950
2008-08-20$251.10$251.10113,930
2008-08-19$240.00$240.00116,310
2008-08-18$247.20$247.20117,360
2008-08-15$259.60$259.60104,050
2008-08-14$261.40$261.4079,820
2008-08-13$257.80$257.80106,850
2008-08-12$268.10$268.10111,400
2008-08-11$264.80$264.80134,610
2008-08-08$260.00$260.00188,540
2008-08-07$282.00$282.00129,370
2008-08-06$286.90$286.90255,290
2008-08-05$309.30$309.30332,920
2008-08-04$360.70$360.70112,390
2008-08-01$378.70$378.7093,280
2008-07-31$394.90$394.90104,030
2008-07-30$381.90$381.9067,800
2008-07-29$371.30$371.3046,660
2008-07-28$361.40$361.4059,360
2008-07-25$352.50$352.5056,800
2008-07-24$350.60$350.6078,850
2008-07-23$345.60$345.60103,850
2008-07-22$384.40$384.4097,300
2008-07-21$380.10$380.10102,290
2008-07-18$359.00$359.00156,630
2008-07-17$332.00$332.0081,400
2008-07-16$327.00$327.0087,880
2008-07-15$315.70$315.70110,170
2008-07-14$321.50$321.5080,170
2008-07-11$322.40$322.40112,550
2008-07-10$324.00$324.00112,750
2008-07-09$312.30$312.30104,720
2008-07-08$313.10$313.10125,620
2008-07-07$316.80$316.80168,090
2008-07-03$319.80$319.80124,090
2008-07-02$336.50$336.50127,340
2008-07-01$353.80$353.80149,820
2008-06-30$358.50$358.50210,560
2008-06-27$350.30$350.30406,850
2008-06-26$379.90$379.90168,470
2008-06-25$404.60$404.60182,790
2008-06-24$419.10$419.10243,050
2008-06-23$439.00$439.0091,540
2008-06-20$425.50$425.50180,470
2008-06-19$440.20$440.20142,390
2008-06-18$426.60$426.6095,120
2008-06-17$430.60$430.60107,290
2008-06-16$425.30$425.30198,080
2008-06-13$416.50$416.50176,520
2008-06-12$410.90$410.90192,580
2008-06-11$439.20$439.20232,710
2008-06-10$431.10$431.10509,520
2008-06-09$360.80$360.8055,480
2008-06-06$359.60$359.60165,680
2008-06-05$361.90$361.9081,850
2008-06-04$347.10$347.1071,210
2008-06-03$346.10$346.1060,790
2008-06-02$344.50$344.5079,870
2008-05-30$352.80$352.8064,230
2008-05-29$350.70$350.70127,830
2008-05-28$346.60$346.60178,640
2008-05-27$315.40$315.40111,770
2008-05-23$309.10$309.1064,760
2008-05-22$300.10$300.1052,930
2008-05-21$298.50$298.5073,860
2008-05-20$301.60$301.6084,730
2008-05-19$303.30$303.30140,320
2008-05-16$308.30$308.30100,120
2008-05-15$294.60$294.6091,720
2008-05-14$294.10$294.10234,700
2008-05-13$277.60$277.60346,510
2008-05-12$289.40$289.40156,170
2008-05-09$298.60$298.60216,680
2008-05-08$327.70$327.70413,150
2008-05-07$246.70$246.7065,920
2008-05-06$262.80$262.8051,850
2008-05-05$255.70$255.7030,960
2008-05-02$261.00$261.0053,210
2008-05-01$260.90$260.9069,080
2008-04-30$252.80$252.8035,720
2008-04-29$255.00$255.0036,160
2008-04-28$263.90$263.9023,320
2008-04-25$263.20$263.2030,160
2008-04-24$258.20$258.2037,960
2008-04-23$260.20$260.2036,900
2008-04-22$268.10$268.1038,100
2008-04-21$269.40$269.4024,060
2008-04-18$269.60$269.6044,530
2008-04-17$261.10$261.1043,510
2008-04-16$263.30$263.3047,720
2008-04-15$252.70$252.7040,200
2008-04-14$248.70$248.7033,260
2008-04-11$243.80$243.8036,980
2008-04-10$253.50$253.5035,000
2008-04-09$252.80$252.8030,100
2008-04-08$255.90$255.9016,300
2008-04-07$254.10$254.1039,280
2008-04-04$255.30$255.3047,170
2008-04-03$252.00$252.0032,540
2008-04-02$250.00$250.0070,420
2008-04-01$239.70$239.7067,410
2008-03-31$231.90$231.9054,240
2008-03-28$235.40$235.4087,430
2008-03-27$244.10$244.1083,310
2008-03-26$239.70$239.7064,030
2008-03-25$249.70$249.7059,990
2008-03-24$247.10$247.1095,810
2008-03-20$233.00$233.00129,750
2008-03-19$235.20$235.2077,530
2008-03-18$247.40$247.4066,240
2008-03-17$239.90$239.9089,940
2008-03-14$239.80$239.8076,520
2008-03-13$239.80$239.8063,100
2008-03-12$235.80$235.8063,360
2008-03-11$228.50$228.5067,860
2008-03-10$211.80$211.8070,730
2008-03-07$218.30$218.3094,220
2008-03-06$228.80$228.8072,080
2008-03-05$244.30$244.3097,470
2008-03-04$229.90$229.9075,000
2008-03-03$224.90$224.9066,500
2008-02-29$225.90$225.9079,160
2008-02-28$228.90$228.9095,620
2008-02-27$219.50$219.5078,140
2008-02-26$207.50$207.5058,000
2008-02-25$200.30$200.3059,180
2008-02-22$192.30$192.3069,830
2008-02-21$194.90$194.9053,100
2008-02-20$202.70$202.7059,900
2008-02-19$201.00$201.0058,480
2008-02-15$203.00$203.0069,530
2008-02-14$213.30$213.3084,170
2008-02-13$222.20$222.2073,390
2008-02-12$206.40$206.4057,650
2008-02-11$201.60$201.6065,360
2008-02-08$194.30$194.3074,500
2008-02-07$196.80$196.8084,890
2008-02-06$196.40$196.4092,610
2008-02-05$209.80$209.8074,620
2008-02-04$228.60$228.6098,960
2008-02-01$215.80$215.80143,280
2008-01-31$202.50$202.50188,820
2008-01-30$194.60$194.60148,880
2008-01-29$193.10$193.1085,360
2008-01-28$186.30$186.3063,130
2008-01-25$191.00$191.0087,850
2008-01-24$184.40$184.40138,730
2008-01-23$192.60$192.6092,480
2008-01-22$186.00$186.00182,040
2008-01-18$183.10$183.10142,770
2008-01-17$189.50$189.50154,220
2008-01-16$214.30$214.3072,150
2008-01-15$225.60$225.6069,650
2008-01-14$238.40$238.4044,780
2008-01-11$231.30$231.3049,450
2008-01-10$240.40$240.4081,020
2008-01-09$251.70$251.7071,040
2008-01-08$249.00$249.0060,790
2008-01-07$255.90$255.9079,000
2008-01-04$262.00$262.0082,690
2008-01-03$284.80$284.8067,590
2008-01-02$275.30$275.3084,520