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 — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$4.53$4.53156,500
2018-12-28$4.57$4.5776,300
2018-12-27$4.51$4.5176,900
2018-12-26$4.39$4.39103,800
2018-12-24$4.03$4.03107,700
2018-12-21$4.26$4.26115,000
2018-12-20$4.55$4.55124,400
2018-12-19$4.37$4.37145,700
2018-12-18$4.71$4.71102,500
2018-12-17$4.63$4.6382,700
2018-12-14$4.44$4.44154,000
2018-12-13$4.82$4.8266,900
2018-12-12$5.24$5.2485,400
2018-12-11$5.05$5.0583,700
2018-12-10$5.05$5.0589,500
2018-12-07$5.12$5.1255,700
2018-12-06$5.17$5.1790,100
2018-12-04$5.31$5.3195,900
2018-12-03$5.34$5.34196,000
2018-11-30$5.50$5.50485,400
2018-11-29$5.57$5.57163,000
2018-11-28$5.64$5.64144,500
2018-11-27$5.69$5.69102,900
2018-11-26$5.52$5.5250,700
2018-11-23$5.56$5.5619,800
2018-11-21$5.47$5.4787,600
2018-11-20$5.22$5.22104,900
2018-11-19$5.16$5.16108,800
2018-11-16$5.30$5.30134,400
2018-11-15$5.29$5.2996,700
2018-11-14$5.09$5.0998,800
2018-11-13$5.00$5.0099,900
2018-11-12$4.89$4.8964,700
2018-11-09$4.83$4.8341,800
2018-11-08$4.82$4.8219,600
2018-11-07$4.83$4.8358,300
2018-11-06$4.90$4.9037,900
2018-11-05$4.77$4.7762,100
2018-11-02$5.00$5.00125,400
2018-11-01$4.99$4.99284,600
2018-10-31$4.69$4.69107,600
2018-10-30$4.44$4.4474,700
2018-10-29$4.30$4.3095,900
2018-10-26$4.46$4.46158,900
2018-10-25$4.71$4.71108,100
2018-10-24$4.51$4.51112,600
2018-10-23$4.59$4.5971,700
2018-10-22$4.54$4.5484,600
2018-10-19$4.60$4.6099,500
2018-10-18$4.53$4.53126,700
2018-10-17$4.71$4.7146,900
2018-10-16$4.75$4.75117,300
2018-10-15$4.81$4.8194,100
2018-10-12$4.64$4.64103,100
2018-10-11$4.64$4.6496,800
2018-10-10$4.74$4.74105,000
2018-10-09$4.74$4.7491,900
2018-10-08$4.80$4.80162,800
2018-10-05$4.69$4.69168,100
2018-10-04$4.90$4.90318,500
2018-10-03$5.14$5.1495,700
2018-10-02$5.39$5.3967,600
2018-10-01$5.25$5.25109,900
2018-09-28$5.34$5.34164,000
2018-09-27$5.45$5.45131,600
2018-09-26$5.56$5.5671,600
2018-09-25$5.80$5.8065,900
2018-09-24$5.65$5.6566,800
2018-09-21$5.89$5.89158,200
2018-09-20$5.94$5.94197,700
2018-09-19$5.56$5.56189,200
2018-09-18$5.23$5.23116,900
2018-09-17$5.15$5.1570,300
2018-09-14$5.10$5.1063,800
2018-09-13$5.08$5.08115,800
2018-09-12$5.03$5.03134,400
2018-09-11$5.04$5.04126,300
2018-09-10$5.12$5.12165,800
2018-09-07$5.04$5.0491,300
2018-09-06$4.91$4.91109,200
2018-09-05$5.05$5.05107,500
2018-09-04$5.30$5.3097,600
2018-08-31$5.49$5.49122,400
2018-08-30$5.34$5.34204,900
2018-08-29$5.49$5.4979,200
2018-08-28$5.55$5.55142,000
2018-08-27$5.47$5.47155,700
2018-08-24$5.32$5.32157,200
2018-08-23$5.22$5.22306,400
2018-08-22$5.38$5.38311,700
2018-08-21$5.16$5.16271,900
2018-08-20$5.20$5.20315,300
2018-08-17$4.81$4.81173,700
2018-08-16$4.71$4.71192,600
2018-08-15$4.64$4.64301,300
2018-08-14$4.95$4.95511,800
2018-08-13$4.80$4.80484,200
2018-08-10$5.14$5.14622,900
2018-08-09$5.83$5.83274,700
2018-08-08$5.66$5.66173,700
2018-08-07$5.64$5.64107,600
2018-08-06$5.64$5.64132,300
2018-08-03$5.72$5.72123,000
2018-08-02$5.59$5.59195,700
2018-08-01$5.62$5.62255,300
2018-07-31$5.66$5.6692,400
2018-07-30$5.61$5.61135,600
2018-07-27$5.81$5.81179,700
2018-07-26$5.69$5.69135,400
2018-07-25$5.61$5.61156,900
2018-07-24$5.66$5.66157,600
2018-07-23$5.75$5.75145,100
2018-07-20$5.75$5.7577,400
2018-07-19$5.88$5.88191,200
2018-07-18$5.87$5.87142,700
2018-07-17$5.86$5.86255,700
2018-07-16$5.67$5.67157,200
2018-07-13$5.80$5.80212,500
2018-07-12$5.69$5.69224,900
2018-07-11$5.78$5.78194,300
2018-07-10$6.00$6.00169,000
2018-07-09$6.16$6.16271,100
2018-07-06$5.88$5.88144,700
2018-07-05$5.93$5.93228,200
2018-07-03$5.77$5.77198,300
2018-07-02$6.11$6.11193,000
2018-06-29$6.05$6.05486,100
2018-06-28$6.26$6.26302,700
2018-06-27$6.38$6.38300,000
2018-06-26$6.56$6.56187,000
2018-06-25$6.63$6.63261,900
2018-06-22$6.98$6.98241,000
2018-06-21$7.07$7.07188,700
2018-06-20$7.24$7.24224,300
2018-06-19$7.09$7.09210,100
2018-06-18$7.06$7.06289,500
2018-06-15$7.14$7.14324,300
2018-06-14$7.41$7.41399,900
2018-06-13$7.68$7.68225,800
2018-06-12$7.83$7.83321,100
2018-06-11$7.92$7.92620,300
2018-06-08$8.22$8.22322,300
2018-06-07$8.54$8.54395,200
2018-06-06$8.51$8.51687,100
2018-06-05$8.92$8.921,513,400
2018-06-04$8.32$8.321,140,500
2018-06-01$9.92$9.92278,100
2018-05-31$9.86$9.86749,900
2018-05-30$10.22$10.22850,200
2018-05-29$9.16$9.16239,000
2018-05-25$8.93$8.93184,500
2018-05-24$9.14$9.14165,100
2018-05-23$9.06$9.06299,900
2018-05-22$9.26$9.26342,700
2018-05-21$8.85$8.85231,700
2018-05-18$8.82$8.82253,600
2018-05-17$8.74$8.74284,600
2018-05-16$8.98$8.98270,900
2018-05-15$8.96$8.96296,300
2018-05-14$8.91$8.91660,900
2018-05-11$8.22$8.22512,200
2018-05-10$7.40$7.40172,500
2018-05-09$7.35$7.35123,600
2018-05-08$7.40$7.40118,500
2018-05-07$7.28$7.28149,500
2018-05-04$7.02$7.02139,700
2018-05-03$6.95$6.9592,300
2018-05-02$7.02$7.0291,800
2018-05-01$7.06$7.06136,900
2018-04-30$6.93$6.93139,300
2018-04-27$6.88$6.88157,300
2018-04-26$7.11$7.11174,000
2018-04-25$7.11$7.11100,400
2018-04-24$7.05$7.05126,200
2018-04-23$7.46$7.46116,300
2018-04-20$7.49$7.4973,500
2018-04-19$7.35$7.35147,700
2018-04-18$7.62$7.6268,300
2018-04-17$7.68$7.6884,800
2018-04-16$7.64$7.6477,400
2018-04-13$7.74$7.7453,100
2018-04-12$7.77$7.7757,700
2018-04-11$7.73$7.7383,200
2018-04-10$7.72$7.72256,600
2018-04-09$7.46$7.4698,400
2018-04-06$7.31$7.31270,800
2018-04-05$7.65$7.65177,900
2018-04-04$7.83$7.83212,300
2018-04-03$7.77$7.77177,300
2018-04-02$7.70$7.70163,600
2018-03-29$7.32$7.3295,300
2018-03-28$6.93$6.93157,800
2018-03-27$7.17$7.17125,100
2018-03-26$7.65$7.65106,300
2018-03-23$7.44$7.44133,600
2018-03-22$7.77$7.7773,800
2018-03-21$8.11$8.1188,900
2018-03-20$7.98$7.98132,600
2018-03-19$8.18$8.18203,700
2018-03-16$8.26$8.2693,800
2018-03-15$8.18$8.18129,600
2018-03-14$8.18$8.18131,100
2018-03-13$8.11$8.11174,900
2018-03-12$8.29$8.29116,000
2018-03-09$8.27$8.2783,300
2018-03-08$8.14$8.1487,900
2018-03-07$8.38$8.38177,400
2018-03-06$7.93$7.93130,400
2018-03-05$7.75$7.7588,000
2018-03-02$7.69$7.6998,200
2018-03-01$7.65$7.65130,200
2018-02-28$7.59$7.59135,200
2018-02-27$7.64$7.64183,200
2018-02-26$7.83$7.83162,300
2018-02-23$7.69$7.69153,400
2018-02-22$7.60$7.60217,200
2018-02-21$7.76$7.76181,600
2018-02-20$8.14$8.14236,800
2018-02-16$7.93$7.93233,200
2018-02-15$8.27$8.27174,400
2018-02-14$8.17$8.17191,800
2018-02-13$8.12$8.12314,000
2018-02-12$8.43$8.43219,500
2018-02-09$8.49$8.49473,300
2018-02-08$8.61$8.61237,800
2018-02-07$8.89$8.89142,600
2018-02-06$8.98$8.98174,500
2018-02-05$8.79$8.79241,100
2018-02-02$9.53$9.53267,400
2018-02-01$9.99$9.99114,500
2018-01-31$10.03$10.03112,900
2018-01-30$10.15$10.15123,200
2018-01-29$10.37$10.37170,900
2018-01-26$10.60$10.60123,300
2018-01-25$10.49$10.49180,300
2018-01-24$10.97$10.97258,600
2018-01-23$11.35$11.35224,400
2018-01-22$10.99$10.99425,700
2018-01-19$11.28$11.28185,200
2018-01-18$11.37$11.37374,300
2018-01-17$10.95$10.95274,300
2018-01-16$10.50$10.50245,700
2018-01-12$10.70$10.70175,700
2018-01-11$10.83$10.83142,400
2018-01-10$10.78$10.78135,700
2018-01-09$10.63$10.63174,300
2018-01-08$10.91$10.91234,900
2018-01-05$10.98$10.98537,300
2018-01-04$10.31$10.3189,600
2018-01-03$10.46$10.46145,600
2018-01-02$10.61$10.61213,200