NASDAQ:ASYS | Historical Stock Price | AMTECH SYSTEMS INC

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
1983-08-09 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.95$1.88$3.70$7.31$14.44$28.521983-08-092026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 1984

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1984-12-31$10.00$10.00945
1984-12-28$10.00$10.001,200
1984-12-27$10.00$10.00263
1984-12-26$10.00$10.00350
1984-12-24$10.00$10.00100
1984-12-21$10.00$10.002,643
1984-12-20$10.00$10.0038
1984-12-19$10.00$10.00883
1984-12-18$10.00$10.00425
1984-12-17$10.00$10.001,025
1984-12-14$10.00$10.00475
1984-12-13$10.00$10.00200
1984-12-12$10.00$10.00625
1984-12-11$5.00$5.00188
1984-12-10$5.00$5.0085
1984-12-07$5.00$5.001,415
1984-12-06$10.00$10.001,248
1984-12-05$10.00$10.00623
1984-12-04$5.00$5.00150
1984-12-03$5.00$5.00415
1984-11-30$5.00$5.001,830
1984-11-29$5.00$5.001,578
1984-11-28$10.00$10.00155
1984-11-27$10.00$10.00313
1984-11-26$10.00$10.001,488
1984-11-23$10.00$10.00468
1984-11-21$10.00$10.001,350
1984-11-20$10.00$10.0075
1984-11-19$10.00$10.00538
1984-11-16$10.00$10.00945
1984-11-15$10.00$10.00500
1984-11-14$10.00$10.00245
1984-11-13$10.00$10.000
1984-11-12$10.00$10.00300
1984-11-09$10.00$10.001,545
1984-11-08$10.00$10.00200
1984-11-07$10.00$10.00785
1984-11-06$10.00$10.00435
1984-11-05$10.00$10.001,550
1984-11-02$10.00$10.001,718
1984-11-01$10.00$10.002,250
1984-10-31$10.00$10.00295
1984-10-30$10.00$10.00605
1984-10-29$10.00$10.00630
1984-10-26$10.00$10.002,200
1984-10-25$10.00$10.002,433
1984-10-24$10.00$10.001,003
1984-10-23$10.00$10.004,560
1984-10-22$10.00$10.001,490
1984-10-19$10.00$10.001,298
1984-10-18$10.00$10.00700
1984-10-17$10.00$10.001,300
1984-10-16$10.00$10.00755
1984-10-15$10.00$10.002,935
1984-10-12$10.00$10.001,813
1984-10-11$10.00$10.001,848
1984-10-10$10.00$10.003,518
1984-10-09$10.00$10.00675
1984-10-08$10.00$10.001,073
1984-10-05$10.00$10.002,800
1984-10-04$10.00$10.00770
1984-10-03$10.00$10.00738
1984-10-02$10.00$10.001,038
1984-10-01$10.00$10.00525
1984-09-28$10.00$10.00445
1984-09-27$10.00$10.00163
1984-09-26$10.00$10.00388
1984-09-25$10.00$10.001,475
1984-09-24$10.00$10.00525
1984-09-21$10.00$10.00275
1984-09-20$10.00$10.001,045
1984-09-19$10.00$10.004,843
1984-09-18$10.00$10.00853
1984-09-17$10.00$10.00700
1984-09-14$10.00$10.001,833
1984-09-13$10.00$10.001,625
1984-09-12$5.00$5.00813
1984-09-11$10.00$10.002,480
1984-09-10$10.00$10.00388
1984-09-07$10.00$10.00275
1984-09-06$10.00$10.002,230
1984-09-05$10.00$10.00350
1984-09-04$10.00$10.001,983
1984-08-31$10.00$10.00500
1984-08-30$10.00$10.00818
1984-08-29$10.00$10.001,125
1984-08-28$10.00$10.002,023
1984-08-27$10.00$10.00295
1984-08-24$10.00$10.001,288
1984-08-23$10.00$10.00880
1984-08-22$10.00$10.00620
1984-08-21$10.00$10.00550
1984-08-20$10.00$10.00688
1984-08-17$10.00$10.002,010
1984-08-16$10.00$10.002,068
1984-08-15$10.00$10.002,145
1984-08-14$10.00$10.00125
1984-08-13$10.00$10.00455
1984-08-10$10.00$10.00700
1984-08-09$10.00$10.00500
1984-08-08$10.00$10.003,685
1984-08-07$10.00$10.00570
1984-08-06$10.00$10.001,010
1984-08-03$10.00$10.001,535
1984-08-02$10.00$10.00908
1984-08-01$10.00$10.00238
1984-07-31$10.00$10.001,400
1984-07-30$10.00$10.001,923
1984-07-27$10.00$10.001,050
1984-07-26$10.00$10.001,500
1984-07-25$10.00$10.001,313
1984-07-24$10.00$10.00323
1984-07-23$10.00$10.00363
1984-07-20$10.00$10.002,735
1984-07-19$10.00$10.00578
1984-07-18$10.00$10.00233
1984-07-17$10.00$10.003,525
1984-07-16$10.00$10.005,073
1984-07-13$10.00$10.002,363
1984-07-12$10.00$10.00725
1984-07-11$10.00$10.004,355
1984-07-10$10.00$10.001,290
1984-07-09$15.00$15.001,105
1984-07-06$15.00$15.00898
1984-07-05$15.00$15.00478
1984-07-03$15.00$15.001,420
1984-07-02$15.00$15.00198
1984-06-29$15.00$15.00965
1984-06-28$15.00$15.001,238
1984-06-27$15.00$15.00815
1984-06-26$15.00$15.00808
1984-06-25$15.00$15.001,565
1984-06-22$15.00$15.00670
1984-06-21$15.00$15.001,535
1984-06-20$15.00$15.001,805
1984-06-19$15.00$15.00973
1984-06-18$15.00$15.001,075
1984-06-15$15.00$15.001,198
1984-06-14$15.00$15.00313
1984-06-13$15.00$15.0095
1984-06-12$15.00$15.00225
1984-06-11$15.00$15.00488
1984-06-08$15.00$15.00503
1984-06-07$15.00$15.00988
1984-06-06$15.00$15.00400
1984-06-05$15.00$15.00925
1984-06-04$15.00$15.001,625
1984-06-01$15.00$15.001,158
1984-05-31$15.00$15.00625
1984-05-30$15.00$15.00608
1984-05-29$15.00$15.00843
1984-05-25$15.00$15.00575
1984-05-24$15.00$15.001,518
1984-05-23$15.00$15.001,380
1984-05-22$15.00$15.00878
1984-05-21$15.00$15.001,305
1984-05-18$15.00$15.00958
1984-05-17$15.00$15.00290
1984-05-16$15.00$15.00310
1984-05-15$15.00$15.00693
1984-05-14$15.00$15.001,730
1984-05-11$15.00$15.00670
1984-05-10$15.00$15.001,328
1984-05-09$15.00$15.003,150
1984-05-08$15.00$15.00490
1984-05-07$15.00$15.001,780
1984-05-04$15.00$15.001,358
1984-05-03$15.00$15.001,340
1984-05-02$15.00$15.00915
1984-05-01$15.00$15.002,753
1984-04-30$15.00$15.001,150
1984-04-27$15.00$15.001,050
1984-04-26$15.00$15.001,408
1984-04-25$15.00$15.001,610
1984-04-24$15.00$15.003,310
1984-04-23$15.00$15.001,043
1984-04-19$15.00$15.001,170
1984-04-18$15.00$15.00825
1984-04-17$15.00$15.001,108
1984-04-16$15.00$15.001,943
1984-04-13$15.00$15.001,315
1984-04-12$15.00$15.00903
1984-04-11$15.00$15.001,220
1984-04-10$15.00$15.002,900
1984-04-09$15.00$15.001,633
1984-04-06$15.00$15.001,295
1984-04-05$15.00$15.001,465
1984-04-04$15.00$15.001,518
1984-04-03$15.00$15.001,415
1984-04-02$15.00$15.00903
1984-03-30$15.00$15.001,580
1984-03-29$15.00$15.001,388
1984-03-28$15.00$15.002,045
1984-03-27$15.00$15.001,448
1984-03-26$15.00$15.001,610
1984-03-23$15.00$15.002,413
1984-03-22$15.00$15.00640
1984-03-21$15.00$15.001,335
1984-03-20$15.00$15.003,860
1984-03-19$15.00$15.001,693
1984-03-16$15.00$15.00688
1984-03-15$15.00$15.001,455
1984-03-14$15.00$15.001,160
1984-03-13$15.00$15.00768
1984-03-12$15.00$15.001,333
1984-03-09$15.00$15.00678
1984-03-08$15.00$15.00533
1984-03-07$15.00$15.002,433
1984-03-06$15.00$15.002,880
1984-03-05$15.00$15.003,485
1984-03-02$15.00$15.0011,388
1984-03-01$15.00$15.008,355
1984-02-29$20.00$20.0012,843
1984-02-28$15.00$15.006,585
1984-02-27$15.00$15.008,138
1984-02-24$10.00$10.002,328
1984-02-23$10.00$10.00980
1984-02-22$10.00$10.001,658
1984-02-21$10.00$10.001,345
1984-02-17$10.00$10.00660
1984-02-16$10.00$10.002,120
1984-02-15$10.00$10.001,338
1984-02-14$10.00$10.003,288
1984-02-13$10.00$10.003,860
1984-02-10$15.00$15.001,210
1984-02-09$15.00$15.001,945
1984-02-08$15.00$15.002,110
1984-02-07$15.00$15.002,490
1984-02-06$15.00$15.006,618
1984-02-03$15.00$15.008,130
1984-02-02$15.00$15.005,175
1984-02-01$15.00$15.004,530
1984-01-31$15.00$15.002,865
1984-01-30$10.00$10.003,305
1984-01-27$10.00$10.002,275
1984-01-26$10.00$10.003,183
1984-01-25$10.00$10.002,985
1984-01-24$10.00$10.003,715
1984-01-23$10.00$10.00715
1984-01-20$10.00$10.001,548
1984-01-19$10.00$10.001,638
1984-01-18$10.00$10.001,455
1984-01-17$10.00$10.001,338
1984-01-16$10.00$10.003,603
1984-01-13$10.00$10.002,365
1984-01-12$10.00$10.00800
1984-01-11$10.00$10.001,095
1984-01-10$10.00$10.001,810
1984-01-09$15.00$15.002,430
1984-01-06$15.00$15.001,928
1984-01-05$10.00$10.001,083
1984-01-04$10.00$10.00520
1984-01-03$10.00$10.002,705