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 — 2003

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2003-12-31$138.60$138.6030,070
2003-12-30$144.40$144.4054,650
2003-12-29$136.00$136.0058,180
2003-12-26$119.60$119.604,510
2003-12-24$118.50$118.505,400
2003-12-23$120.30$120.3015,650
2003-12-22$120.50$120.5013,720
2003-12-19$122.50$122.5040,150
2003-12-18$116.00$116.009,070
2003-12-17$113.50$113.508,190
2003-12-16$115.20$115.2018,700
2003-12-15$111.80$111.8012,680
2003-12-12$115.50$115.509,820
2003-12-11$116.90$116.9025,350
2003-12-10$111.10$111.1026,480
2003-12-09$116.60$116.6017,480
2003-12-08$117.30$117.3018,530
2003-12-05$115.90$115.9017,840
2003-12-04$115.30$115.3031,440
2003-12-03$122.80$122.8025,660
2003-12-02$117.10$117.1044,440
2003-12-01$114.00$114.0029,080
2003-11-28$105.30$105.307,440
2003-11-26$105.20$105.2020,920
2003-11-25$105.30$105.3012,780
2003-11-24$103.80$103.8020,880
2003-11-21$103.80$103.809,050
2003-11-20$105.80$105.8013,020
2003-11-19$107.50$107.5012,110
2003-11-18$104.00$104.0023,750
2003-11-17$108.60$108.6019,170
2003-11-14$110.50$110.5062,730
2003-11-13$106.20$106.2015,330
2003-11-12$108.50$108.5017,090
2003-11-11$108.00$108.0020,460
2003-11-10$109.00$109.0033,460
2003-11-07$103.90$103.9023,120
2003-11-06$101.50$101.5058,940
2003-11-05$97.00$97.0016,830
2003-11-04$99.40$99.407,740
2003-11-03$99.20$99.2020,540
2003-10-31$96.50$96.5019,990
2003-10-30$100.50$100.5013,770
2003-10-29$102.50$102.5011,420
2003-10-28$100.90$100.9024,580
2003-10-27$95.10$95.1031,940
2003-10-24$93.80$93.8064,860
2003-10-23$97.50$97.5044,980
2003-10-22$105.00$105.0018,780
2003-10-21$105.80$105.8020,500
2003-10-20$103.90$103.9020,920
2003-10-17$103.40$103.4043,850
2003-10-16$104.50$104.5021,650
2003-10-15$105.70$105.7036,570
2003-10-14$109.50$109.5024,250
2003-10-13$111.40$111.4032,030
2003-10-10$110.40$110.4025,840
2003-10-09$113.70$113.7057,670
2003-10-08$112.70$112.7054,570
2003-10-07$111.80$111.8075,340
2003-10-06$109.50$109.5075,320
2003-10-03$110.00$110.00302,320
2003-10-02$105.10$105.1045,630
2003-10-01$106.50$106.5029,500
2003-09-30$103.30$103.3026,210
2003-09-29$102.90$102.9044,140
2003-09-26$100.10$100.1041,230
2003-09-25$108.80$108.8021,620
2003-09-24$113.00$113.0025,190
2003-09-23$113.00$113.0017,420
2003-09-22$111.50$111.5021,140
2003-09-19$116.50$116.5021,980
2003-09-18$116.10$116.1023,420
2003-09-17$112.50$112.5020,710
2003-09-16$113.20$113.2066,800
2003-09-15$115.50$115.5030,130
2003-09-12$123.10$123.1012,820
2003-09-11$121.90$121.9026,240
2003-09-10$122.50$122.5030,170
2003-09-09$126.10$126.1051,040
2003-09-08$130.30$130.3050,350
2003-09-05$133.00$133.0032,380
2003-09-04$132.40$132.4033,850
2003-09-03$133.00$133.0056,110
2003-09-02$129.50$129.5054,400
2003-08-29$121.90$121.9040,960
2003-08-28$123.60$123.6039,210
2003-08-27$124.70$124.7085,400
2003-08-26$134.00$134.00149,110
2003-08-25$122.00$122.0056,370
2003-08-22$116.00$116.0062,170
2003-08-21$114.50$114.5052,180
2003-08-20$111.90$111.9077,040
2003-08-19$117.70$117.7087,680
2003-08-18$121.60$121.60302,020
2003-08-15$132.00$132.00443,290
2003-08-14$92.50$92.5033,840
2003-08-13$87.60$87.6030,560
2003-08-12$82.10$82.1014,060
2003-08-11$78.10$78.106,610
2003-08-08$77.50$77.508,380
2003-08-07$78.40$78.4018,410
2003-08-06$79.50$79.5029,270
2003-08-05$83.10$83.1011,410
2003-08-04$86.80$86.8015,330
2003-08-01$83.90$83.9010,620
2003-07-31$80.40$80.4019,770
2003-07-30$82.60$82.6045,200
2003-07-29$85.00$85.0049,930
2003-07-28$71.00$71.0032,930
2003-07-25$67.70$67.709,730
2003-07-24$65.10$65.1025,890
2003-07-23$61.20$61.2012,350
2003-07-22$61.00$61.008,010
2003-07-21$59.10$59.107,370
2003-07-18$60.40$60.4017,620
2003-07-17$58.10$58.1013,930
2003-07-16$59.50$59.509,990
2003-07-15$61.40$61.4015,680
2003-07-14$62.30$62.3044,610
2003-07-11$57.90$57.9051,580
2003-07-10$51.60$51.6036,550
2003-07-09$51.00$51.0043,350
2003-07-08$49.70$49.7033,910
2003-07-07$50.60$50.6037,940
2003-07-03$52.60$52.6027,560
2003-07-02$59.70$59.7018,010
2003-07-01$62.10$62.1021,670
2003-06-30$61.30$61.3092,760
2003-06-27$59.10$59.1065,740
2003-06-26$53.90$53.9024,970
2003-06-25$45.10$45.104,290
2003-06-24$45.60$45.605,920
2003-06-23$42.10$42.1010,580
2003-06-20$46.60$46.606,790
2003-06-19$47.40$47.406,230
2003-06-18$45.00$45.008,160
2003-06-17$45.50$45.509,150
2003-06-16$44.50$44.504,350
2003-06-13$43.60$43.6023,100
2003-06-12$42.70$42.707,890
2003-06-11$44.10$44.1012,050
2003-06-10$45.00$45.008,030
2003-06-09$46.00$46.0014,120
2003-06-06$51.00$51.0013,430
2003-06-05$51.20$51.204,340
2003-06-04$53.40$53.4017,860
2003-06-03$54.30$54.3016,980
2003-06-02$47.00$47.0015,320
2003-05-30$41.60$41.607,760
2003-05-29$40.00$40.0014,760
2003-05-28$41.50$41.5018,630
2003-05-27$37.40$37.407,340
2003-05-23$36.00$36.006,660
2003-05-22$36.10$36.108,370
2003-05-21$35.70$35.704,230
2003-05-20$35.00$35.005,710
2003-05-19$35.10$35.105,870
2003-05-16$36.60$36.603,700
2003-05-15$36.60$36.606,470
2003-05-14$36.20$36.2010,950
2003-05-13$35.40$35.407,090
2003-05-12$34.80$34.8010,760
2003-05-09$35.30$35.307,120
2003-05-08$35.50$35.507,250
2003-05-07$37.00$37.0015,870
2003-05-06$36.60$36.6012,140
2003-05-05$37.00$37.006,430
2003-05-02$36.40$36.405,650
2003-05-01$36.40$36.402,420
2003-04-30$36.50$36.505,300
2003-04-29$36.60$36.605,260
2003-04-28$36.80$36.803,210
2003-04-25$35.90$35.902,540
2003-04-24$36.10$36.104,760
2003-04-23$36.90$36.9031,900
2003-04-22$34.50$34.506,860
2003-04-21$34.00$34.0013,100
2003-04-17$34.40$34.408,000
2003-04-16$34.00$34.008,760
2003-04-15$32.00$32.004,450
2003-04-14$32.10$32.105,690
2003-04-11$32.00$32.008,410
2003-04-10$32.60$32.608,430
2003-04-09$33.20$33.205,500
2003-04-08$34.10$34.107,230
2003-04-07$34.00$34.0010,280
2003-04-04$34.30$34.3011,730
2003-04-03$33.20$33.2024,170
2003-04-02$35.20$35.2020,640
2003-04-01$33.40$33.4045,540
2003-03-31$36.00$36.0089,300
2003-03-28$39.10$39.105,570
2003-03-27$39.70$39.702,740
2003-03-26$39.10$39.107,640
2003-03-25$39.80$39.8010,630
2003-03-24$39.10$39.107,200
2003-03-21$37.50$37.5010,500
2003-03-20$37.40$37.406,070
2003-03-19$37.50$37.506,870
2003-03-18$39.20$39.206,720
2003-03-17$37.50$37.509,250
2003-03-14$35.60$35.608,080
2003-03-13$35.50$35.5011,380
2003-03-12$34.50$34.507,170
2003-03-11$35.00$35.0046,750
2003-03-10$32.60$32.6025,360
2003-03-07$36.50$36.507,010
2003-03-06$37.60$37.606,440
2003-03-05$38.10$38.1011,750
2003-03-04$39.30$39.3040,340
2003-03-03$38.50$38.5074,170
2003-02-28$32.30$32.3010,020
2003-02-27$33.60$33.605,650
2003-02-26$36.40$36.404,640
2003-02-25$36.50$36.504,820
2003-02-24$35.10$35.106,450
2003-02-21$35.10$35.102,910
2003-02-20$35.00$35.003,460
2003-02-19$35.00$35.002,210
2003-02-18$35.20$35.202,450
2003-02-14$34.80$34.802,310
2003-02-13$36.00$36.008,930
2003-02-12$35.10$35.107,940
2003-02-11$36.80$36.803,880
2003-02-10$39.50$39.503,110
2003-02-07$38.70$38.705,720
2003-02-06$38.50$38.505,330
2003-02-05$39.00$39.0012,470
2003-02-04$38.10$38.1034,080
2003-02-03$48.50$48.5011,070
2003-01-31$49.90$49.9024,340
2003-01-30$45.00$45.0015,270
2003-01-29$42.20$42.2010,660
2003-01-28$39.80$39.806,750
2003-01-27$36.40$36.407,090
2003-01-24$38.60$38.608,830
2003-01-23$41.50$41.507,970
2003-01-22$39.50$39.5010,640
2003-01-21$37.50$37.504,170
2003-01-17$35.10$35.105,820
2003-01-16$37.00$37.006,290
2003-01-15$39.50$39.5010,910
2003-01-14$39.50$39.507,900
2003-01-13$35.10$35.105,590
2003-01-10$32.60$32.605,200
2003-01-09$33.30$33.305,860
2003-01-08$33.60$33.605,570
2003-01-07$33.00$33.0011,150
2003-01-06$35.20$35.206,280
2003-01-03$30.70$30.705,670
2003-01-02$31.60$31.606,790