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 — 1986

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1986-12-31$2.50$2.501,213
1986-12-30$2.50$2.50748
1986-12-29$2.50$2.5050
1986-12-26$2.50$2.500
1986-12-24$2.50$2.50338
1986-12-23$2.50$2.504,338
1986-12-22$2.50$2.50825
1986-12-19$5.00$5.00783
1986-12-18$5.00$5.000
1986-12-17$5.00$5.0075
1986-12-16$5.00$5.005
1986-12-15$5.00$5.0050
1986-12-12$5.00$5.0088
1986-12-11$5.00$5.00725
1986-12-10$5.00$5.000
1986-12-09$5.00$5.00120
1986-12-08$5.00$5.000
1986-12-05$5.00$5.001,015
1986-12-04$5.00$5.00850
1986-12-03$5.00$5.00750
1986-12-02$5.00$5.00575
1986-12-01$5.00$5.00625
1986-11-28$5.00$5.00250
1986-11-26$5.00$5.00500
1986-11-25$5.00$5.00300
1986-11-24$5.00$5.000
1986-11-21$5.00$5.0093
1986-11-20$5.00$5.00748
1986-11-19$5.00$5.00358
1986-11-18$5.00$5.00500
1986-11-17$5.00$5.00108
1986-11-14$5.00$5.000
1986-11-13$5.00$5.0075
1986-11-12$5.00$5.00250
1986-11-11$5.00$5.00100
1986-11-10$5.00$5.001,075
1986-11-07$5.00$5.00300
1986-11-06$5.00$5.000
1986-11-05$5.00$5.001,550
1986-11-04$5.00$5.00400
1986-11-03$5.00$5.00793
1986-10-31$5.00$5.00883
1986-10-30$5.00$5.001,825
1986-10-29$5.00$5.00355
1986-10-28$5.00$5.000
1986-10-27$5.00$5.0063
1986-10-24$5.00$5.001,425
1986-10-23$5.00$5.001,388
1986-10-22$5.00$5.001,275
1986-10-21$5.00$5.004,275
1986-10-20$5.00$5.002,700
1986-10-17$5.00$5.001,685
1986-10-16$2.50$2.50100
1986-10-15$2.50$2.50100
1986-10-14$2.50$2.50305
1986-10-13$2.50$2.50650
1986-10-10$2.50$2.50818
1986-10-09$2.50$2.50160
1986-10-08$2.50$2.501,325
1986-10-07$2.50$2.500
1986-10-06$2.50$2.50553
1986-10-03$2.50$2.50280
1986-10-02$2.50$2.502,000
1986-10-01$2.50$2.50150
1986-09-30$2.50$2.50770
1986-09-29$2.50$2.5040
1986-09-26$2.50$2.500
1986-09-25$2.50$2.5025
1986-09-24$2.50$2.50793
1986-09-23$2.50$2.5025
1986-09-22$2.50$2.501,620
1986-09-19$2.50$2.500
1986-09-18$2.50$2.50105
1986-09-17$2.50$2.5030
1986-09-16$2.50$2.50628
1986-09-15$2.50$2.50238
1986-09-12$2.50$2.50245
1986-09-11$2.50$2.50183
1986-09-10$2.50$2.50135
1986-09-09$2.50$2.50500
1986-09-08$2.50$2.5025
1986-09-05$2.50$2.5050
1986-09-04$2.50$2.50653
1986-09-03$2.50$2.50525
1986-09-02$2.50$2.503
1986-08-29$2.50$2.501,120
1986-08-28$2.50$2.501,768
1986-08-27$5.00$5.00250
1986-08-26$5.00$5.003
1986-08-25$5.00$5.00278
1986-08-22$5.00$5.001,313
1986-08-21$5.00$5.00288
1986-08-20$5.00$5.0038
1986-08-19$5.00$5.003
1986-08-18$5.00$5.0060
1986-08-15$5.00$5.00473
1986-08-14$5.00$5.000
1986-08-13$5.00$5.00310
1986-08-12$5.00$5.00335
1986-08-11$5.00$5.001,480
1986-08-08$5.00$5.00125
1986-08-07$5.00$5.003
1986-08-06$5.00$5.0075
1986-08-05$5.00$5.00125
1986-08-04$5.00$5.003,273
1986-08-01$5.00$5.002,123
1986-07-31$5.00$5.001,588
1986-07-30$5.00$5.003
1986-07-29$5.00$5.00275
1986-07-28$5.00$5.0028
1986-07-25$5.00$5.0025
1986-07-24$5.00$5.0075
1986-07-23$5.00$5.0025
1986-07-22$5.00$5.00250
1986-07-21$5.00$5.00233
1986-07-18$5.00$5.001,055
1986-07-17$5.00$5.001,400
1986-07-16$5.00$5.000
1986-07-15$5.00$5.00665
1986-07-14$5.00$5.001,075
1986-07-11$5.00$5.000
1986-07-10$5.00$5.00620
1986-07-09$5.00$5.00375
1986-07-08$5.00$5.001,590
1986-07-07$5.00$5.001,008
1986-07-03$5.00$5.00163
1986-07-02$5.00$5.001,275
1986-07-01$5.00$5.00163
1986-06-30$5.00$5.00443
1986-06-27$5.00$5.00253
1986-06-26$5.00$5.00250
1986-06-25$5.00$5.001,075
1986-06-24$5.00$5.00800
1986-06-23$5.00$5.002,148
1986-06-20$5.00$5.002,758
1986-06-19$5.00$5.00158
1986-06-18$5.00$5.00188
1986-06-17$5.00$5.0058
1986-06-16$5.00$5.000
1986-06-13$5.00$5.00135
1986-06-12$5.00$5.00375
1986-06-11$5.00$5.0043
1986-06-10$5.00$5.001,555
1986-06-09$5.00$5.001,293
1986-06-06$5.00$5.0025
1986-06-05$5.00$5.000
1986-06-04$5.00$5.00750
1986-06-03$5.00$5.001,063
1986-06-02$5.00$5.00255
1986-05-30$5.00$5.001,163
1986-05-29$5.00$5.001,138
1986-05-28$5.00$5.00528
1986-05-27$5.00$5.00700
1986-05-23$5.00$5.0010
1986-05-22$5.00$5.00335
1986-05-21$5.00$5.00188
1986-05-20$5.00$5.002,638
1986-05-19$5.00$5.00513
1986-05-16$5.00$5.00598
1986-05-15$5.00$5.00163
1986-05-14$5.00$5.00625
1986-05-13$5.00$5.002,635
1986-05-12$5.00$5.001,125
1986-05-09$5.00$5.0025
1986-05-08$5.00$5.007,125
1986-05-07$5.00$5.0030
1986-05-06$5.00$5.002,218
1986-05-05$5.00$5.003,508
1986-05-02$5.00$5.001,883
1986-05-01$5.00$5.00250
1986-04-30$5.00$5.00120
1986-04-29$5.00$5.002,250
1986-04-28$5.00$5.0050
1986-04-25$5.00$5.00443
1986-04-24$5.00$5.00580
1986-04-23$5.00$5.002,325
1986-04-22$5.00$5.00750
1986-04-21$5.00$5.00548
1986-04-18$5.00$5.0025
1986-04-17$5.00$5.00175
1986-04-16$5.00$5.00550
1986-04-15$5.00$5.0050
1986-04-14$5.00$5.0083
1986-04-11$5.00$5.002,525
1986-04-10$5.00$5.00100
1986-04-09$5.00$5.0050
1986-04-08$5.00$5.0095
1986-04-07$5.00$5.00393
1986-04-04$5.00$5.00218
1986-04-03$5.00$5.0088
1986-04-02$5.00$5.0025
1986-04-01$5.00$5.001,315
1986-03-31$5.00$5.00150
1986-03-27$5.00$5.00275
1986-03-26$5.00$5.00785
1986-03-25$5.00$5.00283
1986-03-24$5.00$5.000
1986-03-21$5.00$5.00200
1986-03-20$5.00$5.002,603
1986-03-19$5.00$5.001,325
1986-03-18$5.00$5.00210
1986-03-17$5.00$5.00788
1986-03-14$5.00$5.001,023
1986-03-13$5.00$5.00113
1986-03-12$5.00$5.00363
1986-03-11$5.00$5.00478
1986-03-10$5.00$5.00150
1986-03-07$5.00$5.00670
1986-03-06$5.00$5.00750
1986-03-05$5.00$5.0063
1986-03-04$5.00$5.00525
1986-03-03$5.00$5.0088
1986-02-28$5.00$5.0075
1986-02-27$5.00$5.00500
1986-02-26$5.00$5.0063
1986-02-25$5.00$5.003,300
1986-02-24$5.00$5.00490
1986-02-21$5.00$5.005,085
1986-02-20$5.00$5.003,068
1986-02-19$5.00$5.00420
1986-02-18$5.00$5.00113
1986-02-14$5.00$5.00185
1986-02-13$5.00$5.00358
1986-02-12$5.00$5.00845
1986-02-11$10.00$10.00125
1986-02-10$10.00$10.00913
1986-02-07$10.00$10.00273
1986-02-06$10.00$10.000
1986-02-05$10.00$10.0058
1986-02-04$10.00$10.00278
1986-02-03$10.00$10.00550
1986-01-31$10.00$10.00650
1986-01-30$10.00$10.002,053
1986-01-29$5.00$5.00140
1986-01-28$5.00$5.00778
1986-01-27$5.00$5.00358
1986-01-24$5.00$5.00663
1986-01-23$5.00$5.002,995
1986-01-22$10.00$10.00943
1986-01-21$10.00$10.001,250
1986-01-20$10.00$10.001,563
1986-01-17$10.00$10.00418
1986-01-16$10.00$10.002,775
1986-01-15$10.00$10.00650
1986-01-14$10.00$10.00480
1986-01-13$10.00$10.002,275
1986-01-10$10.00$10.001,815
1986-01-09$10.00$10.00378
1986-01-08$10.00$10.001,428
1986-01-07$10.00$10.00253
1986-01-06$10.00$10.001,725
1986-01-03$10.00$10.00665
1986-01-02$10.00$10.002,875