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 — 2007

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2007-12-31$273.40$273.40123,040
2007-12-28$289.80$289.80147,440
2007-12-27$305.20$305.2070,820
2007-12-26$320.40$320.4075,390
2007-12-24$305.90$305.9030,400
2007-12-21$300.50$300.50120,380
2007-12-20$278.50$278.5058,290
2007-12-19$271.20$271.2070,560
2007-12-18$257.00$257.0051,500
2007-12-17$238.10$238.1050,170
2007-12-14$267.20$267.2045,120
2007-12-13$260.40$260.4068,350
2007-12-12$263.70$263.7037,910
2007-12-11$255.50$255.5040,210
2007-12-10$269.30$269.3020,200
2007-12-07$270.70$270.7032,200
2007-12-06$270.80$270.8053,220
2007-12-05$256.10$256.1039,890
2007-12-04$239.30$239.3027,640
2007-12-03$243.10$243.1040,520
2007-11-30$241.40$241.40112,010
2007-11-29$246.30$246.3062,440
2007-11-28$233.80$233.8040,220
2007-11-27$216.60$216.6039,490
2007-11-26$213.90$213.9045,540
2007-11-23$216.00$216.0017,160
2007-11-21$206.20$206.2068,200
2007-11-20$224.50$224.5072,040
2007-11-19$235.10$235.1066,450
2007-11-16$258.90$258.9056,860
2007-11-15$252.60$252.6073,900
2007-11-14$254.90$254.9046,760
2007-11-13$255.10$255.1064,000
2007-11-12$240.60$240.6077,810
2007-11-09$260.90$260.9076,930
2007-11-08$287.30$287.3091,310
2007-11-07$284.40$284.4064,990
2007-11-06$287.70$287.7086,870
2007-11-05$265.70$265.7075,470
2007-11-02$261.30$261.3063,660
2007-11-01$251.70$251.70173,160
2007-10-31$271.50$271.5070,720
2007-10-30$276.70$276.7062,200
2007-10-29$279.20$279.2071,820
2007-10-26$282.50$282.5057,330
2007-10-25$271.60$271.6041,340
2007-10-24$268.70$268.7036,010
2007-10-23$268.40$268.4055,360
2007-10-22$266.70$266.7065,180
2007-10-19$258.10$258.1065,640
2007-10-18$258.50$258.5037,200
2007-10-17$249.00$249.0039,900
2007-10-16$241.90$241.9039,710
2007-10-15$247.70$247.7048,920
2007-10-12$257.70$257.7027,410
2007-10-11$252.00$252.00100,920
2007-10-10$256.00$256.0060,970
2007-10-09$254.80$254.8095,360
2007-10-08$238.90$238.9059,260
2007-10-05$242.90$242.9078,900
2007-10-04$228.10$228.1060,720
2007-10-03$227.00$227.0084,090
2007-10-02$212.60$212.6051,730
2007-10-01$206.40$206.4055,160
2007-09-28$204.80$204.8081,760
2007-09-27$201.20$201.2071,540
2007-09-26$192.80$192.8070,350
2007-09-25$178.40$178.4030,430
2007-09-24$179.40$179.4041,940
2007-09-21$182.70$182.7052,280
2007-09-20$180.10$180.1033,270
2007-09-19$184.60$184.6051,050
2007-09-18$190.50$190.5059,550
2007-09-17$178.00$178.0022,320
2007-09-14$179.20$179.2077,220
2007-09-13$182.60$182.6071,710
2007-09-12$195.60$195.6018,340
2007-09-11$198.00$198.0047,100
2007-09-10$189.70$189.7042,050
2007-09-07$191.50$191.5039,810
2007-09-06$197.80$197.8036,500
2007-09-05$187.60$187.6044,630
2007-09-04$195.10$195.1059,190
2007-08-31$180.20$180.2039,820
2007-08-30$182.20$182.2048,780
2007-08-29$181.80$181.8074,300
2007-08-28$175.30$175.30103,900
2007-08-27$190.40$190.4039,830
2007-08-24$196.80$196.8070,040
2007-08-23$196.40$196.4031,510
2007-08-22$201.70$201.7054,800
2007-08-21$199.70$199.7035,090
2007-08-20$199.90$199.9078,030
2007-08-17$212.90$212.9099,670
2007-08-16$200.60$200.6092,970
2007-08-15$204.60$204.6051,590
2007-08-14$207.60$207.6069,330
2007-08-13$213.50$213.50116,150
2007-08-10$224.90$224.90163,010
2007-08-09$267.70$267.70211,630
2007-08-08$254.40$254.40201,190
2007-08-07$216.80$216.8097,840
2007-08-06$200.70$200.7086,860
2007-08-03$187.20$187.2068,260
2007-08-02$192.50$192.5065,110
2007-08-01$190.60$190.6085,220
2007-07-31$190.90$190.90103,130
2007-07-30$210.00$210.0090,760
2007-07-27$200.00$200.0090,140
2007-07-26$195.20$195.20107,490
2007-07-25$205.80$205.80103,710
2007-07-24$206.80$206.80167,480
2007-07-23$195.80$195.80170,310
2007-07-20$212.80$212.80238,540
2007-07-19$223.40$223.4049,730
2007-07-18$225.10$225.1041,160
2007-07-17$231.30$231.3036,540
2007-07-16$231.10$231.1064,720
2007-07-13$224.40$224.4043,570
2007-07-12$223.20$223.2051,300
2007-07-11$218.50$218.5056,090
2007-07-10$213.70$213.7040,240
2007-07-09$218.70$218.7061,070
2007-07-06$222.60$222.6060,640
2007-07-05$214.90$214.9048,970
2007-07-03$207.30$207.3033,060
2007-07-02$200.80$200.8046,690
2007-06-29$193.10$193.1045,490
2007-06-28$192.50$192.50174,410
2007-06-27$195.40$195.4059,040
2007-06-26$188.80$188.8045,840
2007-06-25$189.00$189.0053,340
2007-06-22$192.40$192.4089,970
2007-06-21$186.20$186.2066,130
2007-06-20$181.10$181.1077,170
2007-06-19$194.20$194.2045,930
2007-06-18$193.90$193.9089,040
2007-06-15$180.10$180.1087,260
2007-06-14$185.50$185.50107,910
2007-06-13$177.30$177.3062,920
2007-06-12$171.70$171.7065,340
2007-06-11$169.40$169.4032,810
2007-06-08$167.70$167.7037,620
2007-06-07$161.90$161.9033,640
2007-06-06$165.10$165.1040,530
2007-06-05$170.00$170.0037,520
2007-06-04$169.70$169.7029,020
2007-06-01$170.40$170.4025,700
2007-05-31$173.40$173.4027,850
2007-05-30$171.30$171.3036,380
2007-05-29$174.20$174.2061,660
2007-05-25$171.30$171.3077,440
2007-05-24$159.50$159.5068,660
2007-05-23$163.10$163.1067,380
2007-05-22$170.40$170.4073,280
2007-05-21$177.60$177.60229,020
2007-05-18$150.00$150.0024,910
2007-05-17$147.60$147.6022,110
2007-05-16$147.80$147.8021,830
2007-05-15$145.50$145.5023,530
2007-05-14$147.60$147.6024,570
2007-05-11$149.00$149.0016,810
2007-05-10$143.80$143.8028,090
2007-05-09$146.30$146.3016,370
2007-05-08$143.10$143.1017,200
2007-05-07$144.60$144.6016,540
2007-05-04$147.70$147.7020,920
2007-05-03$145.50$145.5020,990
2007-05-02$144.30$144.3024,900
2007-05-01$142.20$142.2027,130
2007-04-30$144.40$144.4021,590
2007-04-27$149.60$149.6027,240
2007-04-26$147.70$147.7023,290
2007-04-25$149.00$149.0025,850
2007-04-24$148.40$148.4016,900
2007-04-23$146.40$146.4024,160
2007-04-20$149.00$149.0037,500
2007-04-19$143.50$143.5028,510
2007-04-18$141.50$141.5026,290
2007-04-17$146.30$146.3050,310
2007-04-16$149.40$149.4030,190
2007-04-13$143.00$143.0022,500
2007-04-12$144.70$144.7039,790
2007-04-11$140.00$140.0028,360
2007-04-10$140.60$140.6062,080
2007-04-09$132.30$132.3016,130
2007-04-05$134.00$134.0014,090
2007-04-04$133.60$133.6021,400
2007-04-03$134.60$134.6035,350
2007-04-02$134.70$134.7021,830
2007-03-30$134.70$134.7033,510
2007-03-29$132.10$132.10113,280
2007-03-28$139.70$139.7037,220
2007-03-27$146.10$146.1023,640
2007-03-26$149.40$149.4036,870
2007-03-23$150.10$150.1050,310
2007-03-22$143.70$143.7031,300
2007-03-21$144.00$144.0034,750
2007-03-20$141.10$141.1027,180
2007-03-19$143.80$143.8043,020
2007-03-16$140.40$140.4057,270
2007-03-15$135.00$135.0018,380
2007-03-14$135.00$135.0043,220
2007-03-13$138.00$138.0061,780
2007-03-12$134.00$134.0017,730
2007-03-09$132.00$132.0034,120
2007-03-08$132.40$132.4030,530
2007-03-07$131.20$131.2043,680
2007-03-06$130.70$130.7053,560
2007-03-05$126.90$126.9075,350
2007-03-02$143.30$143.3074,190
2007-03-01$140.60$140.6082,650
2007-02-28$134.40$134.4099,910
2007-02-27$115.50$115.5048,630
2007-02-26$127.50$127.5061,290
2007-02-23$116.10$116.1040,110
2007-02-22$119.50$119.5034,940
2007-02-21$114.60$114.6028,600
2007-02-20$116.10$116.1043,060
2007-02-16$108.80$108.8031,800
2007-02-15$104.90$104.9011,020
2007-02-14$104.30$104.3024,540
2007-02-13$101.80$101.8011,040
2007-02-12$102.20$102.2012,240
2007-02-09$103.20$103.2012,300
2007-02-08$104.80$104.8014,600
2007-02-07$104.20$104.2023,640
2007-02-06$104.40$104.4025,880
2007-02-05$99.50$99.5019,330
2007-02-02$101.70$101.7024,240
2007-02-01$99.60$99.6023,220
2007-01-31$100.70$100.7030,500
2007-01-30$102.90$102.9021,480
2007-01-29$98.50$98.508,270
2007-01-26$98.80$98.8013,570
2007-01-25$97.20$97.2023,620
2007-01-24$99.60$99.6015,500
2007-01-23$97.80$97.8024,660
2007-01-22$94.50$94.5011,950
2007-01-19$94.90$94.9015,320
2007-01-18$93.00$93.0016,350
2007-01-17$94.70$94.7013,590
2007-01-16$96.00$96.0015,970
2007-01-12$94.50$94.5018,380
2007-01-11$92.50$92.5021,850
2007-01-10$95.80$95.8015,140
2007-01-09$97.00$97.0020,480
2007-01-08$96.30$96.3026,280
2007-01-05$96.40$96.4026,350
2007-01-04$99.10$99.1030,260
2007-01-03$97.30$97.3014,890