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 — 1987

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1987-12-31$2.50$2.502,183
1987-12-30$2.50$2.50863
1987-12-29$2.50$2.50763
1987-12-28$2.50$2.50950
1987-12-24$2.50$2.50300
1987-12-23$2.50$2.503,000
1987-12-22$2.50$2.50950
1987-12-21$2.50$2.502,400
1987-12-18$2.50$2.501,625
1987-12-17$2.50$2.502,178
1987-12-16$2.50$2.5063
1987-12-15$2.50$2.50875
1987-12-14$2.50$2.501,020
1987-12-11$2.50$2.50118
1987-12-10$2.50$2.50500
1987-12-09$2.50$2.50500
1987-12-08$2.50$2.5088
1987-12-07$2.50$2.50905
1987-12-04$2.50$2.50663
1987-12-03$2.50$2.50755
1987-12-02$2.50$2.5025
1987-12-01$2.50$2.500
1987-11-30$2.50$2.5035
1987-11-27$5.00$5.00788
1987-11-25$5.00$5.001,000
1987-11-24$5.00$5.0050
1987-11-23$5.00$5.00513
1987-11-20$5.00$5.00475
1987-11-19$2.50$2.50375
1987-11-18$2.50$2.50563
1987-11-17$2.50$2.5025
1987-11-16$2.50$2.50475
1987-11-13$2.50$2.5038
1987-11-12$2.50$2.50905
1987-11-11$2.50$2.501,408
1987-11-10$5.00$5.001,500
1987-11-09$2.50$2.500
1987-11-06$2.50$2.500
1987-11-05$2.50$2.500
1987-11-04$2.50$2.500
1987-11-03$2.50$2.50373
1987-11-02$2.50$2.501,000
1987-10-30$2.50$2.50133
1987-10-29$2.50$2.50908
1987-10-28$2.50$2.50625
1987-10-27$2.50$2.50105
1987-10-26$2.50$2.50250
1987-10-23$2.50$2.5025
1987-10-22$2.50$2.50500
1987-10-21$2.50$2.501,275
1987-10-20$2.50$2.50875
1987-10-19$2.50$2.50500
1987-10-16$5.00$5.00175
1987-10-15$5.00$5.00853
1987-10-14$5.00$5.000
1987-10-13$5.00$5.00270
1987-10-12$5.00$5.00640
1987-10-09$5.00$5.00225
1987-10-08$5.00$5.0050
1987-10-07$5.00$5.00770
1987-10-06$5.00$5.0025
1987-10-05$5.00$5.000
1987-10-02$5.00$5.00625
1987-10-01$5.00$5.00540
1987-09-30$5.00$5.000
1987-09-29$5.00$5.00650
1987-09-28$5.00$5.00120
1987-09-25$5.00$5.00400
1987-09-24$5.00$5.000
1987-09-23$5.00$5.00825
1987-09-22$5.00$5.000
1987-09-21$5.00$5.000
1987-09-18$5.00$5.0050
1987-09-17$5.00$5.0075
1987-09-16$5.00$5.000
1987-09-15$5.00$5.000
1987-09-14$5.00$5.00200
1987-09-11$5.00$5.000
1987-09-10$5.00$5.000
1987-09-09$5.00$5.003
1987-09-08$5.00$5.000
1987-09-04$5.00$5.00888
1987-09-03$5.00$5.00425
1987-09-02$5.00$5.000
1987-09-01$5.00$5.0040
1987-08-31$5.00$5.000
1987-08-28$5.00$5.000
1987-08-27$5.00$5.00625
1987-08-26$5.00$5.00895
1987-08-25$5.00$5.00250
1987-08-24$5.00$5.001,413
1987-08-21$5.00$5.004,050
1987-08-20$5.00$5.00500
1987-08-19$5.00$5.001,443
1987-08-18$5.00$5.00850
1987-08-17$5.00$5.0015
1987-08-14$5.00$5.000
1987-08-13$5.00$5.00225
1987-08-12$5.00$5.00635
1987-08-11$5.00$5.0025
1987-08-10$5.00$5.000
1987-08-07$5.00$5.00350
1987-08-06$5.00$5.00325
1987-08-05$5.00$5.00990
1987-08-04$5.00$5.001,413
1987-08-03$5.00$5.00488
1987-07-31$5.00$5.00625
1987-07-30$5.00$5.00260
1987-07-29$5.00$5.008
1987-07-28$5.00$5.00200
1987-07-27$5.00$5.00508
1987-07-24$5.00$5.00998
1987-07-23$5.00$5.00625
1987-07-22$5.00$5.00728
1987-07-21$5.00$5.00925
1987-07-20$5.00$5.004,090
1987-07-17$5.00$5.00425
1987-07-16$5.00$5.0025
1987-07-15$5.00$5.000
1987-07-14$5.00$5.000
1987-07-13$5.00$5.001,643
1987-07-10$5.00$5.00250
1987-07-09$5.00$5.00320
1987-07-08$5.00$5.00125
1987-07-07$5.00$5.00250
1987-07-06$5.00$5.00350
1987-07-02$5.00$5.001,525
1987-07-01$5.00$5.000
1987-06-30$5.00$5.000
1987-06-29$5.00$5.00650
1987-06-26$5.00$5.002,088
1987-06-25$5.00$5.00375
1987-06-24$5.00$5.001,943
1987-06-23$5.00$5.00743
1987-06-22$5.00$5.00175
1987-06-19$5.00$5.000
1987-06-18$5.00$5.00530
1987-06-17$5.00$5.00250
1987-06-16$5.00$5.00275
1987-06-15$5.00$5.00265
1987-06-12$5.00$5.0015
1987-06-11$5.00$5.000
1987-06-10$5.00$5.001,453
1987-06-09$5.00$5.000
1987-06-08$5.00$5.00575
1987-06-05$5.00$5.00180
1987-06-04$5.00$5.000
1987-06-03$5.00$5.000
1987-06-02$5.00$5.00815
1987-06-01$5.00$5.0025
1987-05-29$5.00$5.00250
1987-05-28$5.00$5.0010
1987-05-27$5.00$5.00750
1987-05-26$5.00$5.000
1987-05-22$5.00$5.00375
1987-05-21$5.00$5.00303
1987-05-20$5.00$5.001,000
1987-05-19$5.00$5.00715
1987-05-18$5.00$5.0025
1987-05-15$5.00$5.0075
1987-05-14$5.00$5.00150
1987-05-13$5.00$5.00275
1987-05-12$5.00$5.0014,918
1987-05-11$5.00$5.00650
1987-05-08$5.00$5.001,250
1987-05-07$5.00$5.001,413
1987-05-06$5.00$5.0058
1987-05-05$5.00$5.0025
1987-05-04$5.00$5.005
1987-05-01$5.00$5.00150
1987-04-30$5.00$5.001,268
1987-04-29$5.00$5.001,125
1987-04-28$5.00$5.00200
1987-04-27$5.00$5.001,115
1987-04-24$5.00$5.000
1987-04-23$5.00$5.00208
1987-04-22$5.00$5.00850
1987-04-21$5.00$5.004,775
1987-04-20$5.00$5.002,150
1987-04-16$5.00$5.00960
1987-04-15$5.00$5.001,038
1987-04-14$5.00$5.002,050
1987-04-13$5.00$5.001,463
1987-04-10$5.00$5.001,160
1987-04-09$5.00$5.00905
1987-04-08$5.00$5.002,363
1987-04-07$5.00$5.002,245
1987-04-06$5.00$5.000
1987-04-03$5.00$5.001,020
1987-04-02$5.00$5.00925
1987-04-01$5.00$5.004,083
1987-03-31$5.00$5.001,503
1987-03-30$5.00$5.002,688
1987-03-27$5.00$5.00350
1987-03-26$5.00$5.00125
1987-03-25$5.00$5.00608
1987-03-24$5.00$5.005
1987-03-23$5.00$5.00750
1987-03-20$5.00$5.00475
1987-03-19$5.00$5.002,470
1987-03-18$5.00$5.00925
1987-03-17$5.00$5.003,630
1987-03-16$5.00$5.002,503
1987-03-13$5.00$5.006,443
1987-03-12$5.00$5.007,513
1987-03-11$5.00$5.004,738
1987-03-10$5.00$5.003,900
1987-03-09$5.00$5.001,388
1987-03-06$5.00$5.00263
1987-03-05$5.00$5.00375
1987-03-04$5.00$5.001,095
1987-03-03$5.00$5.00650
1987-03-02$5.00$5.00725
1987-02-27$5.00$5.005,193
1987-02-26$2.50$2.500
1987-02-25$2.50$2.50125
1987-02-24$2.50$2.50425
1987-02-23$2.50$2.50313
1987-02-20$2.50$2.50250
1987-02-19$2.50$2.500
1987-02-18$2.50$2.50115
1987-02-17$2.50$2.50325
1987-02-13$2.50$2.5075
1987-02-12$2.50$2.500
1987-02-11$2.50$2.50825
1987-02-10$2.50$2.500
1987-02-09$2.50$2.500
1987-02-06$2.50$2.501,375
1987-02-05$2.50$2.503,000
1987-02-04$2.50$2.50750
1987-02-03$2.50$2.503
1987-02-02$2.50$2.500
1987-01-30$2.50$2.500
1987-01-29$2.50$2.500
1987-01-28$2.50$2.500
1987-01-27$2.50$2.500
1987-01-26$2.50$2.501,600
1987-01-23$2.50$2.50108
1987-01-22$2.50$2.500
1987-01-21$2.50$2.501,198
1987-01-20$2.50$2.5063
1987-01-19$2.50$2.500
1987-01-16$2.50$2.50125
1987-01-15$2.50$2.50123
1987-01-14$2.50$2.5025
1987-01-13$2.50$2.500
1987-01-12$2.50$2.50275
1987-01-09$2.50$2.500
1987-01-08$2.50$2.5025
1987-01-07$2.50$2.500
1987-01-06$2.50$2.5050
1987-01-05$2.50$2.50575
1987-01-02$2.50$2.50875