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 — 2006

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2006-12-29$98.10$98.1032,280
2006-12-28$98.40$98.4029,400
2006-12-27$98.30$98.3025,960
2006-12-26$98.60$98.6015,620
2006-12-22$99.40$99.4010,950
2006-12-21$100.10$100.1014,590
2006-12-20$99.60$99.6028,880
2006-12-19$97.70$97.7026,430
2006-12-18$98.30$98.30106,350
2006-12-15$108.50$108.5020,050
2006-12-14$108.00$108.0019,390
2006-12-13$107.60$107.6024,960
2006-12-12$108.70$108.7026,800
2006-12-11$110.00$110.0014,870
2006-12-08$110.10$110.1018,140
2006-12-07$110.60$110.6021,940
2006-12-06$110.10$110.1020,600
2006-12-05$109.30$109.3018,350
2006-12-04$110.30$110.3037,480
2006-12-01$106.70$106.7027,400
2006-11-30$105.10$105.1047,440
2006-11-29$102.90$102.9050,600
2006-11-28$95.30$95.3040,380
2006-11-27$94.00$94.0027,690
2006-11-24$98.60$98.604,920
2006-11-22$98.80$98.8013,940
2006-11-21$101.60$101.6010,650
2006-11-20$102.80$102.8027,290
2006-11-17$100.10$100.1020,830
2006-11-16$103.40$103.4036,000
2006-11-15$102.70$102.7039,640
2006-11-14$99.50$99.5041,210
2006-11-13$93.10$93.1013,080
2006-11-10$92.80$92.809,630
2006-11-09$93.60$93.6015,120
2006-11-08$94.90$94.9019,730
2006-11-07$93.10$93.1015,540
2006-11-06$91.40$91.4017,880
2006-11-03$91.60$91.6011,450
2006-11-02$91.60$91.6020,850
2006-11-01$94.30$94.3025,940
2006-10-31$94.90$94.9014,960
2006-10-30$94.60$94.609,980
2006-10-27$95.10$95.1028,900
2006-10-26$97.80$97.8018,420
2006-10-25$97.80$97.8019,110
2006-10-24$96.70$96.7010,520
2006-10-23$97.20$97.2014,770
2006-10-20$99.20$99.2015,490
2006-10-19$100.00$100.0010,030
2006-10-18$100.00$100.0013,720
2006-10-17$100.20$100.2027,220
2006-10-16$102.90$102.9025,050
2006-10-13$101.20$101.2017,630
2006-10-12$100.80$100.8018,700
2006-10-11$96.80$96.8013,070
2006-10-10$97.60$97.6019,570
2006-10-09$95.60$95.604,670
2006-10-06$95.00$95.008,540
2006-10-05$95.40$95.4010,800
2006-10-04$94.00$94.009,140
2006-10-03$91.10$91.1014,880
2006-10-02$90.60$90.6017,860
2006-09-29$92.60$92.6030,780
2006-09-28$94.80$94.8029,800
2006-09-27$94.00$94.0022,690
2006-09-26$93.80$93.8078,010
2006-09-25$93.50$93.5012,270
2006-09-22$94.30$94.3022,790
2006-09-21$97.20$97.2013,300
2006-09-20$99.50$99.5013,330
2006-09-19$99.60$99.6021,540
2006-09-18$101.10$101.1031,400
2006-09-15$102.60$102.6042,280
2006-09-14$99.00$99.0016,980
2006-09-13$99.40$99.4015,290
2006-09-12$96.50$96.5015,400
2006-09-11$92.80$92.8014,330
2006-09-08$93.60$93.6011,670
2006-09-07$96.80$96.8024,150
2006-09-06$94.10$94.1027,360
2006-09-05$102.60$102.6019,830
2006-09-01$100.30$100.3013,710
2006-08-31$99.70$99.7017,210
2006-08-30$97.90$97.9030,440
2006-08-29$98.60$98.6017,460
2006-08-28$95.60$95.6016,740
2006-08-25$97.10$97.107,670
2006-08-24$96.00$96.0014,030
2006-08-23$95.90$95.9013,530
2006-08-22$97.60$97.6018,990
2006-08-21$99.30$99.3012,130
2006-08-18$101.30$101.3027,060
2006-08-17$98.10$98.1015,800
2006-08-16$98.00$98.0017,680
2006-08-15$95.20$95.2025,340
2006-08-14$93.10$93.1013,180
2006-08-11$92.00$92.009,250
2006-08-10$92.70$92.7015,950
2006-08-09$90.80$90.8018,670
2006-08-08$90.20$90.2020,720
2006-08-07$89.80$89.8014,320
2006-08-04$91.00$91.0019,260
2006-08-03$93.80$93.8015,460
2006-08-02$92.00$92.0014,860
2006-08-01$91.80$91.8024,060
2006-07-31$92.00$92.0029,690
2006-07-28$88.50$88.5013,840
2006-07-27$90.10$90.1033,250
2006-07-26$89.70$89.7067,650
2006-07-25$91.10$91.10108,810
2006-07-24$72.60$72.6018,210
2006-07-21$67.30$67.3016,050
2006-07-20$70.30$70.3017,380
2006-07-19$77.00$77.0020,970
2006-07-18$70.90$70.9022,730
2006-07-17$70.40$70.4049,450
2006-07-14$73.10$73.1021,760
2006-07-13$74.20$74.2026,210
2006-07-12$78.60$78.6016,720
2006-07-11$81.50$81.5028,200
2006-07-10$81.90$81.9018,300
2006-07-07$80.20$80.2028,880
2006-07-06$84.70$84.7034,830
2006-07-05$85.30$85.3023,320
2006-07-03$90.50$90.5013,660
2006-06-30$88.30$88.3032,690
2006-06-29$87.70$87.7037,490
2006-06-28$86.40$86.4042,420
2006-06-27$89.10$89.1026,730
2006-06-26$89.30$89.3016,180
2006-06-23$86.10$86.108,280
2006-06-22$86.70$86.7019,080
2006-06-21$87.20$87.2012,740
2006-06-20$85.30$85.3015,960
2006-06-19$85.90$85.9026,390
2006-06-16$88.40$88.4064,560
2006-06-15$89.90$89.9039,920
2006-06-14$87.80$87.8011,250
2006-06-13$85.90$85.9024,320
2006-06-12$87.80$87.8017,360
2006-06-09$92.80$92.8017,250
2006-06-08$91.90$91.9023,600
2006-06-07$93.00$93.0033,480
2006-06-06$91.80$91.8022,710
2006-06-05$89.40$89.4021,730
2006-06-02$92.00$92.0020,640
2006-06-01$93.40$93.4016,560
2006-05-31$93.70$93.7012,420
2006-05-30$93.80$93.8022,170
2006-05-26$96.40$96.4021,410
2006-05-25$92.40$92.4026,360
2006-05-24$88.90$88.9015,920
2006-05-23$88.70$88.7018,620
2006-05-22$88.20$88.2027,050
2006-05-19$88.40$88.4031,770
2006-05-18$90.70$90.7025,660
2006-05-17$90.60$90.6027,860
2006-05-16$94.50$94.5020,720
2006-05-15$95.90$95.9040,920
2006-05-12$98.40$98.4037,950
2006-05-11$98.00$98.00111,710
2006-05-10$104.80$104.8022,190
2006-05-09$104.90$104.9039,220
2006-05-08$105.80$105.8029,620
2006-05-05$107.70$107.7019,230
2006-05-04$109.80$109.8014,520
2006-05-03$109.30$109.3013,920
2006-05-02$108.90$108.9013,930
2006-05-01$108.90$108.9026,680
2006-04-28$109.60$109.6018,510
2006-04-27$110.00$110.0023,030
2006-04-26$107.60$107.6018,600
2006-04-25$107.80$107.809,660
2006-04-24$108.60$108.6010,250
2006-04-21$109.70$109.7016,720
2006-04-20$110.80$110.8011,600
2006-04-19$112.90$112.9017,560
2006-04-18$111.10$111.1029,270
2006-04-17$105.30$105.3031,500
2006-04-13$109.00$109.0046,570
2006-04-12$107.10$107.1015,280
2006-04-11$104.10$104.1022,730
2006-04-10$106.40$106.4011,630
2006-04-07$109.40$109.4023,060
2006-04-06$110.60$110.6016,860
2006-04-05$111.00$111.0019,920
2006-04-04$109.50$109.5025,820
2006-04-03$110.80$110.8017,820
2006-03-31$113.50$113.5027,480
2006-03-30$113.70$113.7027,120
2006-03-29$112.70$112.7029,170
2006-03-28$108.00$108.0034,030
2006-03-27$106.50$106.5057,610
2006-03-24$109.10$109.1041,050
2006-03-23$101.20$101.2018,110
2006-03-22$96.60$96.609,470
2006-03-21$94.80$94.8013,530
2006-03-20$98.90$98.9014,800
2006-03-17$96.10$96.1029,390
2006-03-16$98.60$98.6011,570
2006-03-15$97.40$97.4018,220
2006-03-14$94.50$94.5017,480
2006-03-13$93.40$93.4014,950
2006-03-10$92.60$92.6012,760
2006-03-09$91.30$91.3020,730
2006-03-08$93.50$93.5022,070
2006-03-07$93.40$93.4028,250
2006-03-06$98.20$98.2020,510
2006-03-03$98.90$98.9021,630
2006-03-02$101.90$101.9022,010
2006-03-01$101.00$101.0024,550
2006-02-28$100.80$100.8024,010
2006-02-27$106.10$106.1022,080
2006-02-24$107.50$107.5022,190
2006-02-23$109.50$109.5043,150
2006-02-22$105.90$105.9036,440
2006-02-21$101.50$101.5024,940
2006-02-17$103.00$103.0016,000
2006-02-16$104.10$104.1014,090
2006-02-15$103.20$103.2014,430
2006-02-14$103.20$103.2015,010
2006-02-13$103.20$103.2013,800
2006-02-10$102.30$102.3022,610
2006-02-09$105.00$105.0015,210
2006-02-08$107.00$107.0017,700
2006-02-07$106.30$106.3037,060
2006-02-06$109.50$109.5026,810
2006-02-03$107.70$107.7035,550
2006-02-02$115.90$115.9061,530
2006-02-01$112.10$112.1038,170
2006-01-31$112.00$112.0036,850
2006-01-30$112.30$112.3049,580
2006-01-27$114.60$114.6021,970
2006-01-26$115.70$115.7031,200
2006-01-25$112.10$112.1045,800
2006-01-24$116.00$116.0093,050
2006-01-23$102.30$102.3026,030
2006-01-20$98.60$98.6023,480
2006-01-19$99.80$99.8030,650
2006-01-18$95.10$95.1023,170
2006-01-17$95.20$95.2021,910
2006-01-13$96.70$96.7034,760
2006-01-12$92.60$92.6023,520
2006-01-11$92.40$92.4028,480
2006-01-10$92.30$92.3032,310
2006-01-09$92.50$92.5045,700
2006-01-06$88.40$88.4019,330
2006-01-05$88.40$88.4030,000
2006-01-04$89.20$89.2040,700
2006-01-03$84.40$84.4031,320