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.

View year

Historical Stock Price — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$78.70$78.7028,130
2005-12-29$79.50$79.5071,560
2005-12-28$81.30$81.3023,460
2005-12-27$82.50$82.5026,890
2005-12-23$83.00$83.0013,150
2005-12-22$83.50$83.5016,980
2005-12-21$82.40$82.4033,410
2005-12-20$83.80$83.8028,860
2005-12-19$81.50$81.5020,430
2005-12-16$82.10$82.1033,510
2005-12-15$85.50$85.5019,680
2005-12-14$85.60$85.6014,800
2005-12-13$87.00$87.0032,510
2005-12-12$89.50$89.5014,990
2005-12-09$91.20$91.2022,450
2005-12-08$88.10$88.1025,720
2005-12-07$88.50$88.5028,230
2005-12-06$87.70$87.7027,190
2005-12-05$85.30$85.3020,170
2005-12-02$85.80$85.8025,420
2005-12-01$84.00$84.0022,940
2005-11-30$81.50$81.5022,310
2005-11-29$80.30$80.3048,410
2005-11-28$81.80$81.8037,850
2005-11-25$79.90$79.905,230
2005-11-23$78.70$78.7016,900
2005-11-22$78.10$78.1049,950
2005-11-21$77.50$77.5035,960
2005-11-18$76.80$76.8032,140
2005-11-17$76.00$76.0025,990
2005-11-16$76.10$76.1045,580
2005-11-15$70.30$70.3042,010
2005-11-14$72.90$72.9028,710
2005-11-11$73.10$73.1060,330
2005-11-10$75.00$75.0053,510
2005-11-09$76.10$76.1060,780
2005-11-08$82.30$82.3020,450
2005-11-07$81.80$81.8015,570
2005-11-04$81.50$81.5010,980
2005-11-03$81.60$81.6022,080
2005-11-02$81.10$81.1015,730
2005-11-01$81.30$81.3013,080
2005-10-31$82.10$82.1036,970
2005-10-28$79.50$79.5019,940
2005-10-27$77.00$77.0020,540
2005-10-26$80.50$80.5041,450
2005-10-25$83.10$83.1017,060
2005-10-24$83.60$83.6031,770
2005-10-21$80.90$80.9020,380
2005-10-20$82.50$82.5021,830
2005-10-19$85.40$85.4043,390
2005-10-18$84.10$84.1018,330
2005-10-17$85.90$85.9023,590
2005-10-14$87.60$87.6026,690
2005-10-13$86.40$86.4055,760
2005-10-12$82.20$82.2058,710
2005-10-11$87.20$87.2063,450
2005-10-10$92.50$92.5040,300
2005-10-07$98.60$98.6012,330
2005-10-06$98.70$98.7030,690
2005-10-05$102.20$102.2028,900
2005-10-04$104.90$104.9021,400
2005-10-03$106.00$106.0030,140
2005-09-30$103.40$103.4024,320
2005-09-29$107.00$107.0017,010
2005-09-28$103.80$103.8017,180
2005-09-27$109.30$109.306,680
2005-09-26$108.40$108.4014,590
2005-09-23$103.90$103.9021,870
2005-09-22$101.60$101.6035,390
2005-09-21$105.90$105.9018,650
2005-09-20$108.90$108.9018,170
2005-09-19$107.70$107.709,450
2005-09-16$109.70$109.7025,470
2005-09-15$109.80$109.8013,930
2005-09-14$109.30$109.3020,360
2005-09-13$113.80$113.8032,280
2005-09-12$118.00$118.0062,580
2005-09-09$115.10$115.1050,370
2005-09-08$107.90$107.9026,790
2005-09-07$108.30$108.3028,660
2005-09-06$105.30$105.3021,760
2005-09-02$99.50$99.5014,000
2005-09-01$100.50$100.5012,990
2005-08-31$102.00$102.0018,350
2005-08-30$98.60$98.6014,000
2005-08-29$99.10$99.1018,410
2005-08-26$97.40$97.4023,950
2005-08-25$100.00$100.008,820
2005-08-24$100.90$100.9014,140
2005-08-23$99.30$99.3016,790
2005-08-22$99.80$99.8014,160
2005-08-19$96.50$96.5010,680
2005-08-18$96.80$96.8013,880
2005-08-17$99.20$99.2014,920
2005-08-16$102.80$102.8034,320
2005-08-15$102.60$102.6025,280
2005-08-12$98.70$98.7019,030
2005-08-11$100.60$100.6020,240
2005-08-10$100.30$100.3029,280
2005-08-09$103.60$103.6035,300
2005-08-08$101.00$101.0041,940
2005-08-05$102.30$102.3025,800
2005-08-04$107.20$107.2075,920
2005-08-03$113.30$113.3022,800
2005-08-02$115.90$115.9027,070
2005-08-01$115.30$115.3044,620
2005-07-29$114.60$114.6028,650
2005-07-28$112.80$112.8028,660
2005-07-27$114.10$114.1044,230
2005-07-26$112.10$112.1058,540
2005-07-25$109.80$109.8089,310
2005-07-22$102.30$102.3011,690
2005-07-21$100.30$100.3013,130
2005-07-20$103.60$103.6031,890
2005-07-19$102.90$102.9076,350
2005-07-18$90.30$90.309,420
2005-07-15$90.20$90.2015,600
2005-07-14$90.40$90.4017,030
2005-07-13$90.50$90.5011,870
2005-07-12$91.60$91.6021,800
2005-07-11$93.40$93.4028,890
2005-07-08$87.70$87.7025,220
2005-07-07$89.90$89.9022,500
2005-07-06$89.80$89.8027,230
2005-07-05$92.50$92.5012,740
2005-07-01$92.40$92.4018,170
2005-06-30$91.50$91.5018,620
2005-06-29$91.50$91.5037,130
2005-06-28$91.00$91.0027,120
2005-06-27$85.10$85.1031,500
2005-06-24$82.10$82.1063,510
2005-06-23$83.50$83.5032,500
2005-06-22$90.20$90.209,620
2005-06-21$90.40$90.4017,910
2005-06-20$91.10$91.1034,980
2005-06-17$95.60$95.6033,630
2005-06-16$90.10$90.1027,930
2005-06-15$90.40$90.4022,670
2005-06-14$89.00$89.0045,550
2005-06-13$94.50$94.5080,830
2005-06-10$76.30$76.3030,940
2005-06-09$78.10$78.1021,630
2005-06-08$78.80$78.8050,630
2005-06-07$79.80$79.8030,960
2005-06-06$83.40$83.4013,500
2005-06-03$85.00$85.0019,740
2005-06-02$87.70$87.7016,440
2005-06-01$89.10$89.1015,480
2005-05-31$88.50$88.5015,540
2005-05-27$87.50$87.5084,610
2005-05-26$91.40$91.4015,120
2005-05-25$89.50$89.5015,830
2005-05-24$90.60$90.6011,370
2005-05-23$91.30$91.3033,840
2005-05-20$91.30$91.3046,600
2005-05-19$83.70$83.7016,880
2005-05-18$84.50$84.5034,100
2005-05-17$84.80$84.8033,070
2005-05-16$86.00$86.0039,800
2005-05-13$87.70$87.7039,540
2005-05-12$93.60$93.6061,350
2005-05-11$98.80$98.8021,770
2005-05-10$98.50$98.5031,440
2005-05-09$95.30$95.3024,550
2005-05-06$92.50$92.5012,590
2005-05-05$92.60$92.6011,640
2005-05-04$93.50$93.5023,240
2005-05-03$87.10$87.1022,520
2005-05-02$88.20$88.2025,110
2005-04-29$87.50$87.5021,960
2005-04-28$87.20$87.2021,950
2005-04-27$90.80$90.8022,870
2005-04-26$92.00$92.0030,650
2005-04-25$93.90$93.9028,760
2005-04-22$97.70$97.7025,200
2005-04-21$100.00$100.0017,100
2005-04-20$95.20$95.2015,100
2005-04-19$97.60$97.6013,110
2005-04-18$95.90$95.9017,550
2005-04-15$96.20$96.2021,690
2005-04-14$100.50$100.5016,850
2005-04-13$104.30$104.3010,590
2005-04-12$108.90$108.9025,070
2005-04-11$108.40$108.4022,520
2005-04-08$111.60$111.6030,160
2005-04-07$107.90$107.9024,500
2005-04-06$106.20$106.2027,070
2005-04-05$100.20$100.2013,140
2005-04-04$100.30$100.3014,820
2005-04-01$100.10$100.1016,980
2005-03-31$99.80$99.8047,190
2005-03-30$100.20$100.2034,140
2005-03-29$98.60$98.6019,930
2005-03-28$102.20$102.2014,420
2005-03-24$102.70$102.7019,040
2005-03-23$104.20$104.2028,130
2005-03-22$100.90$100.9026,460
2005-03-21$98.20$98.2019,800
2005-03-18$101.90$101.9022,280
2005-03-17$101.90$101.9018,630
2005-03-16$104.50$104.5014,400
2005-03-15$104.20$104.208,390
2005-03-14$105.60$105.6015,770
2005-03-11$104.20$104.2019,920
2005-03-10$108.10$108.1028,040
2005-03-09$106.50$106.5023,750
2005-03-08$109.70$109.7023,780
2005-03-07$111.10$111.1031,330
2005-03-04$108.70$108.7016,270
2005-03-03$108.40$108.4016,760
2005-03-02$107.80$107.8018,050
2005-03-01$107.20$107.2029,960
2005-02-28$106.80$106.8050,690
2005-02-25$105.80$105.8053,930
2005-02-24$105.00$105.00274,910
2005-02-23$105.40$105.4056,330
2005-02-22$105.20$105.2046,670
2005-02-18$111.50$111.5015,850
2005-02-17$111.80$111.8010,140
2005-02-16$117.10$117.107,900
2005-02-15$114.70$114.7012,940
2005-02-14$117.00$117.008,080
2005-02-11$118.70$118.7010,120
2005-02-10$117.00$117.0014,070
2005-02-09$116.70$116.7020,140
2005-02-08$122.50$122.5013,930
2005-02-07$120.40$120.4016,480
2005-02-04$122.70$122.7025,210
2005-02-03$126.60$126.6055,590
2005-02-02$113.50$113.5011,240
2005-02-01$115.90$115.9015,460
2005-01-31$116.90$116.909,210
2005-01-28$115.00$115.0015,140
2005-01-27$117.70$117.7011,880
2005-01-26$117.90$117.907,960
2005-01-25$112.60$112.6011,030
2005-01-24$110.00$110.0021,610
2005-01-21$116.60$116.6012,140
2005-01-20$115.90$115.909,430
2005-01-19$118.50$118.5012,900
2005-01-18$122.30$122.3013,150
2005-01-14$120.30$120.308,680
2005-01-13$118.10$118.1019,160
2005-01-12$117.60$117.6036,960
2005-01-11$120.70$120.7034,380
2005-01-10$129.10$129.1020,840
2005-01-07$128.10$128.1019,960
2005-01-06$129.20$129.2027,120
2005-01-05$127.30$127.3024,430
2005-01-04$132.70$132.7044,590
2005-01-03$143.00$143.0022,550