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 — 1988

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1988-12-30$4.50$4.503,600
1988-12-29$4.25$4.253,600
1988-12-28$4.25$4.251,550
1988-12-27$4.25$4.2510,050
1988-12-23$4.75$4.751,900
1988-12-22$4.75$4.759,500
1988-12-21$4.75$4.75250
1988-12-20$4.75$4.75550
1988-12-19$4.75$4.752,650
1988-12-16$4.75$4.75400
1988-12-15$4.75$4.75500
1988-12-14$5.00$5.006,950
1988-12-13$4.75$4.751,800
1988-12-12$4.75$4.75400
1988-12-09$4.75$4.753,700
1988-12-08$5.00$5.002,550
1988-12-07$5.00$5.003,400
1988-12-06$5.00$5.007,350
1988-12-05$4.75$4.75750
1988-12-02$4.75$4.751,800
1988-12-01$4.75$4.752,850
1988-11-30$5.00$5.00400
1988-11-29$5.00$5.001,000
1988-11-28$4.75$4.7550
1988-11-25$4.75$4.75500
1988-11-23$4.75$4.750
1988-11-22$4.75$4.754,150
1988-11-21$5.00$5.004,750
1988-11-18$4.75$4.75150
1988-11-17$4.75$4.755,650
1988-11-16$4.75$4.753,950
1988-11-15$4.75$4.753,000
1988-11-14$4.75$4.751,650
1988-11-11$4.75$4.751,250
1988-11-10$4.75$4.755,000
1988-11-09$5.00$5.002,800
1988-11-08$5.00$5.001,600
1988-11-07$5.00$5.002,750
1988-11-04$5.00$5.00550
1988-11-03$5.00$5.00400
1988-11-02$4.75$4.75650
1988-11-01$4.75$4.75300
1988-10-31$5.00$5.00450
1988-10-28$5.00$5.001,200
1988-10-27$5.00$5.001,000
1988-10-26$5.00$5.002,800
1988-10-25$5.00$5.00750
1988-10-24$4.75$4.752,800
1988-10-21$4.75$4.752,750
1988-10-20$5.00$5.002,300
1988-10-19$5.00$5.004,500
1988-10-18$5.00$5.005,250
1988-10-17$4.75$4.75400
1988-10-14$4.75$4.75900
1988-10-13$4.75$4.751,700
1988-10-12$4.75$4.75500
1988-10-11$4.75$4.751,850
1988-10-10$4.75$4.751,450
1988-10-07$5.00$5.005,200
1988-10-06$5.00$5.00250
1988-10-05$5.00$5.0050
1988-10-04$5.00$5.002,500
1988-10-03$5.00$5.003,800
1988-09-30$5.00$5.001,050
1988-09-29$5.00$5.00150
1988-09-28$5.00$5.00600
1988-09-27$4.75$4.750
1988-09-26$4.75$4.752,300
1988-09-23$5.00$5.003,400
1988-09-22$4.25$4.25700
1988-09-21$4.25$4.25750
1988-09-20$4.25$4.25900
1988-09-19$4.25$4.250
1988-09-16$4.25$4.25500
1988-09-15$4.25$4.256,200
1988-09-14$4.00$4.002,000
1988-09-13$4.00$4.002,000
1988-09-12$3.75$3.750
1988-09-09$3.75$3.75250
1988-09-08$3.50$3.500
1988-09-07$3.50$3.501,800
1988-09-06$3.50$3.500
1988-09-02$3.50$3.502,250
1988-09-01$3.25$3.257,500
1988-08-31$3.50$3.502,100
1988-08-30$3.50$3.502,850
1988-08-29$3.50$3.500
1988-08-26$3.50$3.50800
1988-08-25$3.50$3.502,650
1988-08-24$3.50$3.502,250
1988-08-23$3.50$3.50200
1988-08-22$3.50$3.50400
1988-08-19$3.50$3.500
1988-08-18$3.50$3.50400
1988-08-17$3.50$3.500
1988-08-16$3.50$3.50400
1988-08-15$3.50$3.502,500
1988-08-12$3.50$3.501,750
1988-08-11$3.50$3.501,050
1988-08-10$3.50$3.506,650
1988-08-09$3.25$3.251,500
1988-08-08$3.25$3.251,500
1988-08-05$3.25$3.25500
1988-08-04$3.25$3.251,750
1988-08-03$3.00$3.002,500
1988-08-02$3.00$3.00450
1988-08-01$3.00$3.00350
1988-07-29$3.00$3.00500
1988-07-28$3.00$3.000
1988-07-27$3.00$3.000
1988-07-26$3.00$3.00500
1988-07-25$3.00$3.001,000
1988-07-22$3.00$3.001,500
1988-07-21$3.00$3.003,700
1988-07-20$3.00$3.006,000
1988-07-19$2.75$2.753,500
1988-07-18$2.75$2.75500
1988-07-15$2.75$2.75300
1988-07-14$2.75$2.752,750
1988-07-13$2.50$2.50700
1988-07-12$2.50$2.503,100
1988-07-11$2.50$2.500
1988-07-08$2.50$2.50750
1988-07-07$2.50$2.503,700
1988-07-06$2.75$2.750
1988-07-05$2.75$2.750
1988-07-01$2.75$2.75600
1988-06-30$2.75$2.751,800
1988-06-29$3.00$3.0050
1988-06-28$3.00$3.00300
1988-06-27$3.00$3.000
1988-06-24$3.00$3.001,750
1988-06-23$3.00$3.00950
1988-06-22$3.25$3.250
1988-06-21$3.25$3.251,000
1988-06-20$3.25$3.25900
1988-06-17$3.25$3.25900
1988-06-16$3.25$3.25500
1988-06-15$3.25$3.255,700
1988-06-14$3.50$3.506,250
1988-06-13$3.25$3.253,350
1988-06-10$3.50$3.501,000
1988-06-09$3.50$3.5050
1988-06-08$3.50$3.5050
1988-06-07$3.50$3.502,000
1988-06-06$3.50$3.501,150
1988-06-03$3.25$3.251,000
1988-06-02$3.25$3.25800
1988-06-01$3.00$3.000
1988-05-31$3.00$3.00100
1988-05-27$3.00$3.00300
1988-05-26$3.00$3.000
1988-05-25$3.00$3.0050
1988-05-24$3.00$3.00150
1988-05-23$3.75$3.752,900
1988-05-20$3.25$3.253,250
1988-05-19$2.75$2.751,150
1988-05-18$2.75$2.753,000
1988-05-17$2.50$2.500
1988-05-16$2.50$2.50400
1988-05-13$2.50$2.500
1988-05-12$2.50$2.50650
1988-05-11$2.50$2.50150
1988-05-10$2.50$2.500
1988-05-09$2.50$2.50250
1988-05-06$2.50$2.502,000
1988-05-05$2.25$2.25750
1988-05-04$2.00$2.00500
1988-05-03$2.00$2.0050
1988-05-02$1.50$1.500
1988-04-29$1.50$1.50400
1988-04-28$2.00$2.000
1988-04-27$2.00$2.000
1988-04-26$2.50$2.500
1988-04-25$2.50$2.500
1988-04-22$2.50$2.500
1988-04-21$2.50$2.500
1988-04-20$2.50$2.5013
1988-04-19$2.50$2.50625
1988-04-18$2.50$2.50338
1988-04-15$2.50$2.5050
1988-04-14$2.50$2.500
1988-04-13$2.50$2.50605
1988-04-12$2.50$2.500
1988-04-11$2.50$2.500
1988-04-08$2.50$2.50230
1988-04-07$2.50$2.500
1988-04-06$2.50$2.50300
1988-04-05$2.50$2.50250
1988-04-04$2.50$2.500
1988-03-31$2.50$2.502,375
1988-03-30$2.50$2.502,930
1988-03-29$2.50$2.501,363
1988-03-28$2.50$2.50213
1988-03-25$2.50$2.500
1988-03-24$2.50$2.50850
1988-03-23$5.00$5.0015
1988-03-22$5.00$5.00875
1988-03-21$2.50$2.500
1988-03-18$2.50$2.50125
1988-03-17$2.50$2.50563
1988-03-16$2.50$2.500
1988-03-15$2.50$2.500
1988-03-14$2.50$2.50375
1988-03-11$2.50$2.500
1988-03-10$2.50$2.50375
1988-03-09$2.50$2.5013
1988-03-08$2.50$2.500
1988-03-07$2.50$2.50438
1988-03-04$2.50$2.5088
1988-03-03$2.50$2.5088
1988-03-02$2.50$2.50650
1988-03-01$2.50$2.5025
1988-02-29$2.50$2.50188
1988-02-26$2.50$2.501,250
1988-02-25$2.50$2.500
1988-02-24$2.50$2.500
1988-02-23$2.50$2.5025
1988-02-22$2.50$2.500
1988-02-19$2.50$2.500
1988-02-18$2.50$2.500
1988-02-17$2.50$2.500
1988-02-16$2.50$2.5023
1988-02-12$2.50$2.503,125
1988-02-11$2.50$2.50673
1988-02-10$2.50$2.502,875
1988-02-09$5.00$5.00263
1988-02-08$5.00$5.00875
1988-02-05$5.00$5.00585
1988-02-04$5.00$5.0075
1988-02-03$5.00$5.00280
1988-02-02$5.00$5.001,013
1988-02-01$2.50$2.504,425
1988-01-29$2.50$2.5068
1988-01-28$2.50$2.5025
1988-01-27$2.50$2.50175
1988-01-26$2.50$2.5075
1988-01-25$2.50$2.5025
1988-01-22$2.50$2.500
1988-01-21$2.50$2.50338
1988-01-20$2.50$2.500
1988-01-19$2.50$2.5075
1988-01-18$2.50$2.50950
1988-01-15$2.50$2.500
1988-01-14$2.50$2.5033
1988-01-13$2.50$2.50300
1988-01-12$2.50$2.50205
1988-01-11$2.50$2.5050
1988-01-08$2.50$2.500
1988-01-07$2.50$2.500
1988-01-06$2.50$2.50988
1988-01-05$2.50$2.50500
1988-01-04$2.50$2.500