NASDAQ:ASYS | Stock Price History | 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.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$14.568,224
2026-09-03$14.5015,486
2026-09-02$14.467,526
2026-09-01$14.2618,012
2026-08-31$15.2718,184
2026-08-28$15.7220,366
2026-08-27$15.83$15.83515,600$15.6617,428
2026-08-26$15.17$15.17718,100$14.6719,507
2026-08-25$14.25$14.25230,900$14.238,457
2026-08-24$14.00$14.00424,100$14.3611,219
2026-08-21$14.63$14.63361,300$14.8313,453
2026-08-20$14.62$14.62488,600$14.3910,819
2026-08-19$14.82$14.821,317,800$16.9234,019
2026-08-18$16.88$16.881,009,400$17.4714,270
2026-08-17$16.86$16.86667,000$16.4815,322
2026-08-14$16.04$16.04207,500$15.7811,066
2026-08-13$16.00$16.00253,300$15.8311,515
2026-08-12$15.94$15.94278,900$15.9111,030
2026-08-11$15.40$15.40230,200$15.3810,821
2026-08-10$15.09$15.09534,400$15.8921,301
2026-08-07$15.53$15.53266,000$15.818,136
2026-08-06$14.95$14.95597,900$15.8940,104
2026-08-05$16.01$16.01557,200$16.9118,205
2026-08-04$17.44$17.44374,800$16.6510,348
2026-08-03$15.70$15.70211,400$14.825,081
2026-07-31$15.34$15.34260,700$15.509,502
2026-07-30$14.79$14.79274,600$14.4115,355
2026-07-29$13.65$13.65392,900$14.4319,170
2026-07-28$14.68$14.68596,700$14.9312,428
2026-07-27$15.41$15.41336,700$16.016,389
2026-07-24$15.89$15.89254,400$16.949,904
2026-07-23$17.25$17.25255,600$17.126,675
2026-07-22$17.34$17.34325,200$17.8910,198
2026-07-21$17.98$17.98360,500$17.1810,236
2026-07-20$16.32$16.32296,900$16.888,112
2026-07-17$16.67$16.67279,900
2026-07-16$16.71$16.71422,900
2026-07-15$18.26$18.26445,500
2026-07-14$18.68$18.68393,200
2026-07-13$18.01$18.01381,300
2026-07-10$18.66$18.66494,900
2026-07-09$18.67$18.67500,400
2026-07-08$17.69$17.69437,700
2026-07-07$17.87$17.87614,700
2026-07-06$18.81$18.81270,700
2026-07-02$18.80$18.80484,000
2026-07-01$20.50$20.50445,400
2026-06-30$23.08$23.08599,400
2026-06-29$20.59$20.59406,400
2026-06-26$19.55$19.551,972,400
2026-06-25$20.67$20.67366,900
2026-06-24$19.53$19.53448,200
2026-06-23$20.33$20.33613,600
2026-06-22$22.03$22.03432,400
2026-06-18$22.04$22.04287,900
2026-06-17$21.39$21.39271,300
2026-06-16$21.73$21.73378,500
2026-06-15$22.78$22.78895,800
2026-06-12$23.99$23.991,167,000
2026-06-11$22.60$22.60824,500
2026-06-10$19.31$19.31233,700
2026-06-09$19.07$19.07354,200
2026-06-08$19.71$19.71344,800
2026-06-05$18.49$18.49459,300
2026-06-04$21.91$21.91380,100
2026-06-03$21.07$21.07575,900
2026-06-02$21.95$21.95828,200
2026-06-01$20.65$20.65307,600
2026-05-29$21.27$21.27376,200
2026-05-28$21.62$21.62273,100
2026-05-27$21.79$21.79471,200
2026-05-26$22.82$22.82539,900
2026-05-22$22.08$22.08351,800
2026-05-21$20.95$20.95195,800
2026-05-20$20.25$20.25183,200
2026-05-19$19.67$19.67214,400
2026-05-18$20.02$20.02259,300
2026-05-15$21.08$21.08249,700
2026-05-14$22.46$22.46336,200
2026-05-13$20.71$20.71271,100
2026-05-12$20.96$20.96447,700
2026-05-11$22.68$22.68626,100
2026-05-08$21.49$21.49919,600
2026-05-07$18.21$18.21244,400
2026-05-06$18.20$18.20214,600
2026-05-05$17.93$17.93227,100
2026-05-04$16.48$16.48199,600
2026-05-01$17.13$17.13224,000
2026-04-30$17.41$17.41282,100
2026-04-29$16.57$16.57157,200
2026-04-28$16.60$16.60169,900
2026-04-27$17.73$17.73258,300
2026-04-24$18.77$18.77571,700
2026-04-23$17.24$17.24288,900
2026-04-22$18.00$18.00753,600
2026-04-21$16.81$16.81129,700
2026-04-20$16.72$16.72132,500
2026-04-17$16.21$16.21142,400
2026-04-16$16.40$16.40113,400
2026-04-15$15.90$15.90131,000