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 — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$6.26$6.26132,600
2015-12-30$5.76$5.76149,600
2015-12-29$5.76$5.7677,600
2015-12-28$5.90$5.9060,000
2015-12-24$6.38$6.3811,800
2015-12-23$6.57$6.5761,300
2015-12-22$6.42$6.42181,100
2015-12-21$8.31$8.31206,200
2015-12-18$6.25$6.2578,700
2015-12-17$5.81$5.8154,600
2015-12-16$5.82$5.82107,900
2015-12-15$4.75$4.7533,100
2015-12-14$4.64$4.6458,300
2015-12-11$4.62$4.6214,700
2015-12-10$4.88$4.8857,000
2015-12-09$4.70$4.70128,000
2015-12-08$4.26$4.2631,700
2015-12-07$4.28$4.2821,500
2015-12-04$4.38$4.3848,300
2015-12-03$4.35$4.3546,600
2015-12-02$4.36$4.3663,300
2015-12-01$4.39$4.3920,100
2015-11-30$4.42$4.4257,900
2015-11-27$4.29$4.2923,600
2015-11-25$4.33$4.3397,800
2015-11-24$4.33$4.33119,900
2015-11-23$4.30$4.3073,100
2015-11-20$4.44$4.44161,800
2015-11-19$4.95$4.95105,400
2015-11-18$5.11$5.1158,000
2015-11-17$5.28$5.2836,200
2015-11-16$5.25$5.2530,800
2015-11-13$5.27$5.2742,800
2015-11-12$5.28$5.2841,500
2015-11-11$5.39$5.3944,600
2015-11-10$5.40$5.4040,500
2015-11-09$5.54$5.5467,300
2015-11-06$5.40$5.4022,300
2015-11-05$5.40$5.4014,000
2015-11-04$5.37$5.3721,200
2015-11-03$5.29$5.2962,500
2015-11-02$5.21$5.21141,500
2015-10-30$5.15$5.1519,300
2015-10-29$5.20$5.2048,100
2015-10-28$5.47$5.4786,700
2015-10-27$5.45$5.4577,000
2015-10-26$5.52$5.5276,600
2015-10-23$5.58$5.5833,600
2015-10-22$5.27$5.2756,700
2015-10-21$5.20$5.2033,300
2015-10-20$5.24$5.2479,600
2015-10-19$5.31$5.3160,300
2015-10-16$5.25$5.2583,200
2015-10-15$4.98$4.9832,800
2015-10-14$4.90$4.9032,600
2015-10-13$4.81$4.8122,600
2015-10-12$5.22$5.22156,300
2015-10-09$5.21$5.2136,600
2015-10-08$5.08$5.08351,200
2015-10-07$4.75$4.7551,500
2015-10-06$4.63$4.6320,200
2015-10-05$4.63$4.6378,600
2015-10-02$4.36$4.3661,000
2015-10-01$4.28$4.2816,500
2015-09-30$4.30$4.3027,900
2015-09-29$4.36$4.3675,400
2015-09-28$4.48$4.4852,600
2015-09-25$4.69$4.6929,600
2015-09-24$4.79$4.7924,900
2015-09-23$4.65$4.6531,200
2015-09-22$4.57$4.5745,300
2015-09-21$4.96$4.9620,600
2015-09-18$5.20$5.20114,200
2015-09-17$5.16$5.1641,300
2015-09-16$5.10$5.1045,000
2015-09-15$4.81$4.8129,300
2015-09-14$4.92$4.9238,200
2015-09-11$4.99$4.9941,400
2015-09-10$5.10$5.1038,100
2015-09-09$5.23$5.2332,400
2015-09-08$5.28$5.2848,100
2015-09-04$5.36$5.3629,000
2015-09-03$5.45$5.4530,000
2015-09-02$5.34$5.3432,000
2015-09-01$5.45$5.4548,800
2015-08-31$5.46$5.4649,600
2015-08-28$5.39$5.3986,200
2015-08-27$5.40$5.4097,300
2015-08-26$4.97$4.97102,800
2015-08-25$4.91$4.9162,400
2015-08-24$4.97$4.9797,400
2015-08-21$5.18$5.1868,400
2015-08-20$5.35$5.3577,300
2015-08-19$5.57$5.5744,200
2015-08-18$5.69$5.6944,400
2015-08-17$5.78$5.7850,100
2015-08-14$5.83$5.8376,500
2015-08-13$6.26$6.2630,900
2015-08-12$6.06$6.0669,700
2015-08-11$5.82$5.8256,500
2015-08-10$5.85$5.8589,800
2015-08-07$6.00$6.00247,900
2015-08-06$6.59$6.59109,900
2015-08-05$7.06$7.0667,300
2015-08-04$6.91$6.9146,900
2015-08-03$6.88$6.88103,500
2015-07-31$6.61$6.61103,200
2015-07-30$6.49$6.4969,700
2015-07-29$6.56$6.56122,600
2015-07-28$6.51$6.51148,300
2015-07-27$6.58$6.58576,700
2015-07-24$7.38$7.38323,200
2015-07-23$8.07$8.07114,600
2015-07-22$8.82$8.8282,800
2015-07-21$8.99$8.9949,300
2015-07-20$9.00$9.0041,600
2015-07-17$9.29$9.2963,300
2015-07-16$9.50$9.50104,200
2015-07-15$9.88$9.8862,100
2015-07-14$9.96$9.9630,200
2015-07-13$10.03$10.03106,800
2015-07-10$9.87$9.87106,000
2015-07-09$10.31$10.3197,300
2015-07-08$10.31$10.31201,500
2015-07-07$10.46$10.46114,500
2015-07-06$10.64$10.64102,100
2015-07-02$10.74$10.7486,200
2015-07-01$10.32$10.3296,900
2015-06-30$10.39$10.39174,500
2015-06-29$10.20$10.2070,900
2015-06-26$10.23$10.2341,700
2015-06-25$10.16$10.1644,500
2015-06-24$10.17$10.1749,800
2015-06-23$10.32$10.3228,100
2015-06-22$10.55$10.5543,600
2015-06-19$10.60$10.6054,900
2015-06-18$10.61$10.6148,000
2015-06-17$10.71$10.7162,000
2015-06-16$10.63$10.6398,600
2015-06-15$10.43$10.4342,400
2015-06-12$10.55$10.5536,600
2015-06-11$10.75$10.7545,900
2015-06-10$10.90$10.9057,800
2015-06-09$10.82$10.8257,600
2015-06-08$10.99$10.9939,100
2015-06-05$10.85$10.85185,800
2015-06-04$11.06$11.0649,100
2015-06-03$11.15$11.1592,200
2015-06-02$10.74$10.7450,500
2015-06-01$10.99$10.9989,400
2015-05-29$11.19$11.1990,800
2015-05-28$11.38$11.3852,900
2015-05-27$11.57$11.57100,000
2015-05-26$11.94$11.9448,800
2015-05-22$12.11$12.11174,600
2015-05-21$11.70$11.70217,800
2015-05-20$11.19$11.19192,600
2015-05-19$10.64$10.64141,600
2015-05-18$10.43$10.4340,700
2015-05-15$10.51$10.5118,600
2015-05-14$10.58$10.5824,900
2015-05-13$10.52$10.5229,200
2015-05-12$10.79$10.7971,700
2015-05-11$11.05$11.05186,800
2015-05-08$10.81$10.81256,500
2015-05-07$11.27$11.2769,000
2015-05-06$11.14$11.1440,400
2015-05-05$11.44$11.4467,300
2015-05-04$12.06$12.0645,000
2015-05-01$12.43$12.4334,500
2015-04-30$12.50$12.5055,800
2015-04-29$12.44$12.4444,400
2015-04-28$12.50$12.50144,400
2015-04-27$11.94$11.9461,800
2015-04-24$12.04$12.0464,000
2015-04-23$12.20$12.2060,800
2015-04-22$12.01$12.0184,000
2015-04-21$11.61$11.6137,100
2015-04-20$11.58$11.5863,900
2015-04-17$11.68$11.68104,800
2015-04-16$11.09$11.0940,700
2015-04-15$11.24$11.2447,100
2015-04-14$10.38$10.3832,100
2015-04-13$10.55$10.5574,400
2015-04-10$10.77$10.7731,300
2015-04-09$10.73$10.7360,800
2015-04-08$10.71$10.7137,800
2015-04-07$10.77$10.7733,100
2015-04-06$11.07$11.0730,700
2015-04-02$11.32$11.3223,800
2015-04-01$11.21$11.2132,600
2015-03-31$11.18$11.1818,200
2015-03-30$11.20$11.20123,900
2015-03-27$10.91$10.91158,500
2015-03-26$10.90$10.9055,600
2015-03-25$11.26$11.2684,900
2015-03-24$11.85$11.8541,900
2015-03-23$11.98$11.9860,500
2015-03-20$11.85$11.85261,200
2015-03-19$11.96$11.96147,100
2015-03-18$11.05$11.0529,400
2015-03-17$11.04$11.0425,000
2015-03-16$11.06$11.0633,500
2015-03-13$11.16$11.1637,600
2015-03-12$11.02$11.0251,900
2015-03-11$10.91$10.9153,400
2015-03-10$10.58$10.5825,700
2015-03-09$11.01$11.0125,600
2015-03-06$10.96$10.9626,100
2015-03-05$11.31$11.3172,400
2015-03-04$10.64$10.6433,500
2015-03-03$10.72$10.7266,700
2015-03-02$11.00$11.0098,100
2015-02-27$10.82$10.8238,900
2015-02-26$10.81$10.8157,500
2015-02-25$10.94$10.9485,000
2015-02-24$11.16$11.16138,000
2015-02-23$10.57$10.5789,400
2015-02-20$10.49$10.49181,700
2015-02-19$9.93$9.9320,500
2015-02-18$9.85$9.8525,700
2015-02-17$9.65$9.6531,600
2015-02-13$9.87$9.8752,700
2015-02-12$9.57$9.5712,900
2015-02-11$9.52$9.5230,300
2015-02-10$9.37$9.3713,500
2015-02-09$9.28$9.2814,500
2015-02-06$9.16$9.16107,800
2015-02-05$8.75$8.75171,000
2015-02-04$8.61$8.6183,700
2015-02-03$8.41$8.4142,100
2015-02-02$8.07$8.0779,300
2015-01-30$8.20$8.2017,900
2015-01-29$8.26$8.2614,900
2015-01-28$8.51$8.5114,300
2015-01-27$8.75$8.7527,400
2015-01-26$8.97$8.978,100
2015-01-23$9.01$9.0118,000
2015-01-22$9.03$9.0310,900
2015-01-21$8.95$8.9510,000
2015-01-20$9.35$9.3515,700
2015-01-16$9.53$9.5348,300
2015-01-15$8.74$8.749,600
2015-01-14$9.19$9.1913,600
2015-01-13$9.29$9.2969,700
2015-01-12$9.23$9.2326,600
2015-01-09$9.55$9.558,500
2015-01-08$9.57$9.578,100
2015-01-07$9.38$9.3810,000
2015-01-06$9.51$9.5151,400
2015-01-05$9.62$9.6240,800
2015-01-02$10.27$10.2747,500