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 — 1997

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1997-12-31$85.00$85.0010,600
1997-12-30$83.75$83.7511,480
1997-12-29$87.50$87.505,000
1997-12-26$87.50$87.501,330
1997-12-24$88.75$88.752,470
1997-12-23$86.25$86.251,900
1997-12-22$87.50$87.506,090
1997-12-19$88.13$88.133,560
1997-12-18$90.00$90.0036,620
1997-12-17$93.75$93.751,130
1997-12-16$97.50$97.501,420
1997-12-15$97.50$97.50580
1997-12-12$96.25$96.25210
1997-12-11$98.13$98.131,390
1997-12-10$98.75$98.751,820
1997-12-09$100.00$100.002,560
1997-12-08$103.75$103.75700
1997-12-05$100.00$100.00900
1997-12-04$100.00$100.00990
1997-12-03$98.75$98.752,230
1997-12-02$101.25$101.251,880
1997-12-01$103.75$103.754,060
1997-11-28$103.75$103.75220
1997-11-26$103.75$103.75690
1997-11-25$106.25$106.254,020
1997-11-24$108.75$108.751,740
1997-11-21$110.00$110.0016,140
1997-11-20$112.50$112.501,500
1997-11-19$110.00$110.001,580
1997-11-18$108.75$108.755,260
1997-11-17$106.25$106.25370
1997-11-14$108.75$108.752,660
1997-11-13$101.25$101.254,580
1997-11-12$103.75$103.752,050
1997-11-11$106.88$106.881,280
1997-11-10$106.25$106.25250
1997-11-07$105.00$105.00220
1997-11-06$107.50$107.503,310
1997-11-05$108.75$108.752,220
1997-11-04$106.25$106.253,210
1997-11-03$108.75$108.752,530
1997-10-31$110.00$110.00300
1997-10-30$110.00$110.001,950
1997-10-29$118.75$118.751,950
1997-10-28$115.00$115.003,230
1997-10-27$112.50$112.502,840
1997-10-24$127.50$127.502,120
1997-10-23$123.75$123.751,090
1997-10-22$125.00$125.005,840
1997-10-21$125.00$125.008,570
1997-10-20$125.00$125.001,320
1997-10-17$123.75$123.752,530
1997-10-16$128.13$128.13560
1997-10-15$128.75$128.752,220
1997-10-14$130.00$130.005,240
1997-10-13$128.75$128.758,440
1997-10-10$130.00$130.002,400
1997-10-09$131.25$131.252,920
1997-10-08$137.50$137.506,640
1997-10-07$135.00$135.001,340
1997-10-06$133.13$133.132,400
1997-10-03$135.00$135.001,190
1997-10-02$136.25$136.256,400
1997-10-01$141.25$141.2515,830
1997-09-30$133.75$133.759,240
1997-09-29$118.75$118.752,570
1997-09-26$117.50$117.501,000
1997-09-25$120.00$120.001,190
1997-09-24$118.75$118.753,670
1997-09-23$117.50$117.501,640
1997-09-22$118.75$118.755,020
1997-09-19$117.50$117.503,640
1997-09-18$120.63$120.634,590
1997-09-17$128.75$128.7522,120
1997-09-16$122.50$122.5023,370
1997-09-15$96.25$96.2530,790
1997-09-12$97.50$97.501,460
1997-09-11$98.75$98.755,700
1997-09-10$102.50$102.5020,730
1997-09-09$88.75$88.754,320
1997-09-08$86.25$86.2511,510
1997-09-05$87.50$87.505,710
1997-09-04$87.50$87.50490
1997-09-03$87.50$87.508,280
1997-09-02$86.25$86.256,260
1997-08-29$86.25$86.25560
1997-08-28$87.50$87.505,430
1997-08-27$87.50$87.5010,990
1997-08-26$90.00$90.001,300
1997-08-25$87.50$87.504,020
1997-08-22$87.50$87.502,060
1997-08-21$90.00$90.004,030
1997-08-20$92.50$92.505,630
1997-08-19$95.00$95.002,420
1997-08-18$92.50$92.504,930
1997-08-15$96.25$96.2590
1997-08-14$96.25$96.251,520
1997-08-13$93.13$93.131,030
1997-08-12$93.75$93.752,810
1997-08-11$96.25$96.25450
1997-08-08$93.75$93.752,830
1997-08-07$101.25$101.256,870
1997-08-06$98.75$98.751,540
1997-08-05$101.25$101.254,900
1997-08-04$96.25$96.251,240
1997-08-01$97.50$97.502,340
1997-07-31$102.50$102.50840
1997-07-30$102.50$102.50550
1997-07-29$102.50$102.502,330
1997-07-28$100.00$100.00870
1997-07-25$100.00$100.00390
1997-07-24$100.00$100.002,510
1997-07-23$102.50$102.501,820
1997-07-22$101.25$101.251,050
1997-07-21$100.63$100.631,280
1997-07-18$103.75$103.7510
1997-07-17$103.75$103.751,480
1997-07-16$101.25$101.25750
1997-07-15$105.00$105.004,270
1997-07-14$106.25$106.252,750
1997-07-11$108.75$108.751,750
1997-07-10$105.00$105.001,120
1997-07-09$110.00$110.0014,060
1997-07-08$111.25$111.251,910
1997-07-07$116.25$116.251,440
1997-07-03$118.75$118.75340
1997-07-02$116.25$116.255,470
1997-07-01$117.50$117.506,470
1997-06-30$122.50$122.504,700
1997-06-27$120.00$120.004,110
1997-06-26$113.75$113.7518,450
1997-06-25$103.75$103.755,020
1997-06-24$98.75$98.758,240
1997-06-23$88.13$88.1313,730
1997-06-20$86.25$86.25470
1997-06-19$87.50$87.502,480
1997-06-18$86.25$86.25440
1997-06-17$87.50$87.50180
1997-06-16$87.50$87.50440
1997-06-13$86.25$86.252,040
1997-06-12$87.50$87.50490
1997-06-11$86.25$86.25270
1997-06-10$86.25$86.253,100
1997-06-09$86.88$86.884,440
1997-06-06$88.75$88.752,710
1997-06-05$87.50$87.506,870
1997-06-04$86.25$86.251,550
1997-06-03$83.75$83.755,460
1997-06-02$85.00$85.00510
1997-05-30$85.00$85.005,290
1997-05-29$82.50$82.502,120
1997-05-28$83.75$83.751,120
1997-05-27$82.50$82.50560
1997-05-23$83.75$83.75810
1997-05-22$83.75$83.751,460
1997-05-21$85.00$85.002,370
1997-05-20$85.00$85.0026,800
1997-05-19$87.50$87.50550
1997-05-16$88.75$88.75200
1997-05-15$88.75$88.75700
1997-05-14$86.25$86.251,110
1997-05-13$87.50$87.501,650
1997-05-12$86.25$86.252,600
1997-05-09$87.50$87.50610
1997-05-08$87.50$87.50380
1997-05-07$88.75$88.75680
1997-05-06$90.00$90.002,810
1997-05-05$92.50$92.50360
1997-05-02$92.50$92.502,600
1997-05-01$95.00$95.00330
1997-04-30$93.75$93.75130
1997-04-29$96.25$96.25100
1997-04-28$96.25$96.253,120
1997-04-25$91.25$91.251,940
1997-04-24$91.25$91.251,870
1997-04-23$87.50$87.50960
1997-04-22$90.00$90.00640
1997-04-21$86.25$86.251,110
1997-04-18$87.50$87.50210
1997-04-17$86.25$86.251,110
1997-04-16$88.75$88.751,100
1997-04-15$87.50$87.503,640
1997-04-14$88.75$88.758,310
1997-04-11$91.25$91.253,230
1997-04-10$96.25$96.253,310
1997-04-09$98.75$98.758,260
1997-04-08$97.50$97.509,510
1997-04-07$101.25$101.252,130
1997-04-04$100.00$100.002,620
1997-04-03$100.00$100.0019,270
1997-04-02$96.25$96.2514,910
1997-04-01$82.50$82.504,630
1997-03-31$83.75$83.7512,850
1997-03-27$85.00$85.008,490
1997-03-26$83.75$83.7511,730
1997-03-25$78.75$78.7512,170
1997-03-24$80.00$80.004,960
1997-03-21$81.25$81.251,670
1997-03-20$80.63$80.637,690
1997-03-19$80.00$80.003,870
1997-03-18$82.50$82.502,850
1997-03-17$81.25$81.2515,020
1997-03-14$86.25$86.254,910
1997-03-13$95.00$95.001,350
1997-03-12$97.50$97.509,370
1997-03-11$96.25$96.253,190
1997-03-10$97.50$97.50640
1997-03-07$97.50$97.501,690
1997-03-06$97.50$97.501,920
1997-03-05$98.75$98.751,800
1997-03-04$98.75$98.75900
1997-03-03$101.25$101.25220
1997-02-28$98.75$98.75290
1997-02-27$98.75$98.758,090
1997-02-26$98.75$98.7511,420
1997-02-25$101.25$101.253,660
1997-02-24$106.25$106.252,330
1997-02-21$107.50$107.501,960
1997-02-20$107.50$107.502,890
1997-02-19$108.75$108.751,230
1997-02-18$111.25$111.252,120
1997-02-14$110.00$110.002,770
1997-02-13$110.00$110.001,570
1997-02-12$107.50$107.502,770
1997-02-11$108.13$108.132,140
1997-02-10$109.38$109.383,240
1997-02-07$107.50$107.50810
1997-02-06$106.25$106.25110
1997-02-05$108.75$108.754,900
1997-02-04$107.50$107.507,110
1997-02-03$103.75$103.75970
1997-01-31$107.50$107.50540
1997-01-30$108.75$108.751,980
1997-01-29$108.75$108.751,880
1997-01-28$111.25$111.25170
1997-01-27$112.50$112.501,570
1997-01-24$115.00$115.002,410
1997-01-23$112.50$112.503,570
1997-01-22$111.25$111.25740
1997-01-21$110.00$110.005,750
1997-01-20$111.25$111.25270
1997-01-17$108.75$108.75620
1997-01-16$111.25$111.25970
1997-01-15$112.50$112.503,110
1997-01-14$113.75$113.75710
1997-01-13$115.00$115.002,270
1997-01-10$111.25$111.25620
1997-01-09$111.25$111.25810
1997-01-08$117.50$117.504,210
1997-01-07$110.00$110.00910
1997-01-06$111.25$111.25820
1997-01-03$112.50$112.502,610
1997-01-02$102.50$102.503,440