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 — 2012

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2012-12-31$26.20$26.2086,030——
2012-12-28$25.10$25.10111,540——
2012-12-27$26.40$26.4055,940——
2012-12-26$27.10$27.1024,720——
2012-12-24$27.60$27.6011,090——
2012-12-21$28.60$28.6082,030——
2012-12-20$29.50$29.5028,920——
2012-12-19$29.70$29.7026,570——
2012-12-18$30.60$30.6034,800——
2012-12-17$30.20$30.2036,760——
2012-12-14$29.60$29.6054,540——
2012-12-13$29.30$29.3025,940——
2012-12-12$29.10$29.1034,050——
2012-12-11$28.10$28.1026,890——
2012-12-10$28.20$28.2023,440——
2012-12-07$27.40$27.4021,380——
2012-12-06$27.70$27.7026,640——
2012-12-05$26.60$26.6048,680——
2012-12-04$26.70$26.7041,370——
2012-12-03$26.30$26.3053,440——
2012-11-30$27.80$27.8080,860——
2012-11-29$26.10$26.1048,930——
2012-11-28$25.40$25.4094,230——
2012-11-27$27.70$27.7089,550——
2012-11-26$26.20$26.2047,270——
2012-11-23$25.60$25.6018,780——
2012-11-21$25.00$25.0049,020——
2012-11-20$24.50$24.5049,090——
2012-11-19$24.90$24.9040,960——
2012-11-16$26.00$26.0072,870——
2012-11-15$25.80$25.8044,020——
2012-11-14$26.40$26.4041,520——
2012-11-13$27.50$27.5082,900——
2012-11-12$29.80$29.8042,850——
2012-11-09$32.10$32.1044,080——
2012-11-08$33.40$33.4059,170——
2012-11-07$35.20$35.2039,980——
2012-11-06$38.00$38.0039,360——
2012-11-05$36.70$36.7030,570——
2012-11-02$35.90$35.9027,090——
2012-11-01$36.30$36.3028,780——
2012-10-31$35.90$35.9020,270——
2012-10-26$36.20$36.2020,000——
2012-10-25$36.50$36.5023,140——
2012-10-24$37.10$37.1010,950——
2012-10-23$37.30$37.3013,750——
2012-10-22$37.80$37.8012,420——
2012-10-19$37.30$37.3023,480——
2012-10-18$38.20$38.2013,130——
2012-10-17$39.30$39.3011,320——
2012-10-16$39.20$39.2013,110——
2012-10-15$38.80$38.8013,430——
2012-10-12$38.00$38.009,360——
2012-10-11$38.80$38.8011,610——
2012-10-10$37.70$37.7012,280——
2012-10-09$37.50$37.5030,280——
2012-10-08$38.80$38.8010,670——
2012-10-05$39.40$39.4011,840——
2012-10-04$39.50$39.5018,250——
2012-10-03$39.50$39.5016,850——
2012-10-02$40.80$40.8033,200——
2012-10-01$41.00$41.0024,920——
2012-09-28$41.50$41.5026,950——
2012-09-27$42.30$42.3072,040——
2012-09-26$41.20$41.2062,410——
2012-09-25$38.70$38.7021,820——
2012-09-24$39.40$39.4022,000——
2012-09-21$40.30$40.3053,310——
2012-09-20$39.10$39.1016,600——
2012-09-19$39.30$39.3018,760——
2012-09-18$38.70$38.7024,800——
2012-09-17$38.70$38.7020,560——
2012-09-14$39.60$39.6027,900——
2012-09-13$39.10$39.1029,560——
2012-09-12$38.60$38.6015,370——
2012-09-11$38.60$38.6020,180——
2012-09-10$38.10$38.1026,150——
2012-09-07$37.80$37.8025,970——
2012-09-06$37.20$37.2026,570——
2012-09-05$37.10$37.1017,980——
2012-09-04$37.40$37.4020,140——
2012-08-31$37.50$37.5028,760——
2012-08-30$37.60$37.6013,840——
2012-08-29$38.80$38.8011,590——
2012-08-28$37.70$37.7046,850——
2012-08-27$39.60$39.6012,630——
2012-08-24$40.20$40.2014,160——
2012-08-23$39.80$39.8019,880——
2012-08-22$40.30$40.3021,870——
2012-08-21$40.50$40.5018,590——
2012-08-20$40.50$40.5021,460——
2012-08-17$40.70$40.7023,120——
2012-08-16$41.50$41.5012,600——
2012-08-15$40.60$40.6015,190——
2012-08-14$40.30$40.3023,580——
2012-08-13$41.40$41.4016,300——
2012-08-10$41.90$41.9031,700——
2012-08-09$40.60$40.6032,590——
2012-08-08$41.10$41.1025,740——
2012-08-07$42.30$42.3046,370——
2012-08-06$40.00$40.0035,020——
2012-08-03$40.00$40.0062,360——
2012-08-02$43.00$43.00117,440——
2012-08-01$35.40$35.4038,390——
2012-07-31$37.10$37.1029,300——
2012-07-30$36.80$36.8026,020——
2012-07-27$37.70$37.7050,270——
2012-07-26$37.00$37.0057,000——
2012-07-25$37.90$37.9057,340——
2012-07-24$40.00$40.0042,610——
2012-07-23$42.10$42.1051,140——
2012-07-20$43.90$43.9037,950——
2012-07-19$43.30$43.3028,980——
2012-07-18$44.80$44.8028,960——
2012-07-17$43.90$43.9041,300——
2012-07-16$44.20$44.2033,850——
2012-07-13$46.20$46.2049,140——
2012-07-12$47.80$47.8056,490——
2012-07-11$46.30$46.3049,910——
2012-07-10$46.60$46.6040,260——
2012-07-09$47.30$47.3061,420——
2012-07-06$47.90$47.9048,060——
2012-07-05$48.80$48.8082,400——
2012-07-03$47.30$47.3030,870——
2012-07-02$46.80$46.8055,000——
2012-06-29$47.00$47.0069,240——
2012-06-28$44.60$44.60101,750——
2012-06-27$43.90$43.9093,850——
2012-06-26$46.70$46.7075,280——
2012-06-25$46.80$46.8088,320——
2012-06-22$44.80$44.80139,260——
2012-06-21$41.80$41.8093,790——
2012-06-20$41.10$41.1067,690——
2012-06-19$39.40$39.4044,540——
2012-06-18$39.10$39.1049,720——
2012-06-15$38.80$38.8061,780——
2012-06-14$37.40$37.4054,190——
2012-06-13$39.10$39.1027,960——
2012-06-12$39.30$39.3044,700——
2012-06-11$37.40$37.4037,420——
2012-06-08$39.30$39.3044,870——
2012-06-07$40.00$40.0040,850——
2012-06-06$40.50$40.5031,360——
2012-06-05$40.30$40.3051,350——
2012-06-04$39.40$39.4034,580——
2012-06-01$38.40$38.4035,880——
2012-05-31$39.40$39.4048,440——
2012-05-30$38.80$38.8036,750——
2012-05-29$37.90$37.9032,470——
2012-05-25$37.30$37.3023,590——
2012-05-24$38.10$38.1051,460——
2012-05-23$39.90$39.9056,600——
2012-05-22$35.40$35.4039,800——
2012-05-21$36.30$36.3051,530——
2012-05-18$35.60$35.6058,680——
2012-05-17$36.10$36.1064,100——
2012-05-16$38.40$38.4029,680——
2012-05-15$38.80$38.8019,200——
2012-05-14$39.10$39.1022,980——
2012-05-11$40.30$40.3035,720——
2012-05-10$39.90$39.9018,400——
2012-05-09$40.90$40.9035,620——
2012-05-08$41.00$41.0021,810——
2012-05-07$41.10$41.1018,200——
2012-05-04$40.90$40.9028,820——
2012-05-03$41.20$41.2025,410——
2012-05-02$41.30$41.3036,090——
2012-05-01$42.10$42.1032,020——
2012-04-30$41.30$41.3021,800——
2012-04-27$43.00$43.0045,170——
2012-04-26$42.20$42.2047,330——
2012-04-25$41.60$41.6047,770——
2012-04-24$40.70$40.7033,470——
2012-04-23$39.00$39.0041,570——
2012-04-20$40.00$40.0035,280——
2012-04-19$41.00$41.0034,900——
2012-04-18$40.00$40.0029,950——
2012-04-17$41.20$41.2048,710——
2012-04-16$41.20$41.2035,750——
2012-04-13$41.90$41.9033,000——
2012-04-12$42.40$42.4044,400——
2012-04-11$42.20$42.20124,130——
2012-04-10$37.10$37.1040,860——
2012-04-09$36.00$36.0048,530——
2012-04-05$38.00$38.0072,240——
2012-04-04$39.70$39.7037,130——
2012-04-03$40.00$40.0050,750——
2012-04-02$42.10$42.1034,440——
2012-03-30$41.20$41.2034,710——
2012-03-29$41.00$41.0024,990——
2012-03-28$42.10$42.1016,560——
2012-03-27$41.30$41.3017,720——
2012-03-26$42.10$42.1038,210——
2012-03-23$40.90$40.9035,410——
2012-03-22$41.50$41.5019,230——
2012-03-21$41.70$41.7026,860——
2012-03-20$40.80$40.8036,890——
2012-03-19$41.70$41.7052,020——
2012-03-16$43.60$43.6080,780——
2012-03-15$42.50$42.5048,490——
2012-03-14$40.50$40.5037,440——
2012-03-13$41.60$41.6072,460——
2012-03-12$38.50$38.5032,920——
2012-03-09$37.70$37.7042,640——
2012-03-08$38.30$38.3044,000——
2012-03-07$36.00$36.0065,680——
2012-03-06$36.70$36.7054,210——
2012-03-05$37.40$37.4064,180——
2012-03-02$39.80$39.8074,830——
2012-03-01$41.60$41.6076,910——
2012-02-29$44.80$44.8096,290——
2012-02-28$43.20$43.2042,550——
2012-02-27$44.00$44.0053,580——
2012-02-24$45.20$45.2031,560——
2012-02-23$45.20$45.2061,860——
2012-02-22$46.70$46.7039,040——
2012-02-21$47.10$47.1049,210——
2012-02-17$47.00$47.0067,000——
2012-02-16$47.30$47.3060,860——
2012-02-15$46.10$46.10104,300——
2012-02-14$47.20$47.20106,060——
2012-02-13$47.40$47.40246,710——
2012-02-10$51.10$51.10130,110——
2012-02-09$55.70$55.70222,480——
2012-02-08$60.30$60.30237,180——
2012-02-07$54.40$54.4073,460——
2012-02-06$54.80$54.8090,180——
2012-02-03$57.80$57.80212,370——
2012-02-02$51.60$51.6058,410——
2012-02-01$51.20$51.2069,250——
2012-01-31$50.50$50.5091,620——
2012-01-30$53.20$53.2057,690——
2012-01-27$53.80$53.8080,850——
2012-01-26$51.50$51.5065,610——
2012-01-25$51.90$51.9065,610——
2012-01-24$51.00$51.00114,120——
2012-01-23$53.80$53.8085,650——
2012-01-20$56.40$56.40121,890——
2012-01-19$52.50$52.50256,320——
2012-01-18$55.50$55.50400,550——
2012-01-17$43.50$43.5082,530——
2012-01-13$43.50$43.5083,340——
2012-01-12$44.60$44.60118,800——
2012-01-11$42.20$42.20110,720——
2012-01-10$39.40$39.4074,040——
2012-01-09$37.50$37.5048,490——
2012-01-06$37.10$37.1048,540——
2012-01-05$38.10$38.1045,390——
2012-01-04$38.00$38.0040,690——
2012-01-03$37.10$37.1055,400——