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.

View year

Historical Stock Price — 2017

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2017-12-29$10.07$10.07160,600
2017-12-28$10.15$10.15225,400
2017-12-27$9.84$9.84209,300
2017-12-26$10.07$10.07272,700
2017-12-22$10.16$10.16323,600
2017-12-21$10.43$10.43137,800
2017-12-20$10.55$10.55188,100
2017-12-19$10.63$10.63170,200
2017-12-18$10.32$10.32240,400
2017-12-15$10.41$10.41179,800
2017-12-14$10.34$10.34207,800
2017-12-13$10.19$10.19300,800
2017-12-12$9.94$9.94178,500
2017-12-11$10.01$10.01564,500
2017-12-08$9.85$9.85291,300
2017-12-07$10.00$10.00287,700
2017-12-06$9.89$9.89150,700
2017-12-05$9.85$9.85257,300
2017-12-04$9.45$9.45426,400
2017-12-01$9.93$9.93562,400
2017-11-30$9.88$9.88410,100
2017-11-29$10.21$10.21454,300
2017-11-28$11.26$11.26629,000
2017-11-27$10.72$10.721,082,600
2017-11-24$13.26$13.26220,200
2017-11-22$12.95$12.95478,600
2017-11-21$13.23$13.231,269,200
2017-11-20$14.12$14.12694,000
2017-11-17$13.19$13.19119,100
2017-11-16$13.37$13.37217,800
2017-11-15$12.90$12.90118,300
2017-11-14$13.58$13.58179,500
2017-11-13$12.86$12.86277,700
2017-11-10$13.11$13.11125,700
2017-11-09$13.41$13.4194,100
2017-11-08$13.61$13.61191,600
2017-11-07$12.94$12.94204,900
2017-11-06$13.19$13.19277,700
2017-11-03$13.98$13.98101,100
2017-11-02$14.12$14.12121,300
2017-11-01$13.67$13.67171,100
2017-10-31$14.56$14.56161,000
2017-10-30$14.16$14.16116,800
2017-10-27$13.67$13.67130,900
2017-10-26$13.93$13.93102,500
2017-10-25$13.69$13.69237,600
2017-10-24$14.20$14.20165,800
2017-10-23$14.26$14.26371,200
2017-10-20$13.73$13.73293,400
2017-10-19$14.92$14.92185,200
2017-10-18$14.90$14.90300,100
2017-10-17$15.25$15.25596,800
2017-10-16$14.36$14.36536,900
2017-10-13$13.25$13.25199,200
2017-10-12$13.05$13.05255,200
2017-10-11$12.68$12.68125,000
2017-10-10$12.62$12.62139,800
2017-10-09$12.44$12.4488,900
2017-10-06$12.44$12.44122,300
2017-10-05$12.59$12.59190,000
2017-10-04$12.54$12.54149,000
2017-10-03$12.37$12.37202,200
2017-10-02$12.64$12.64305,200
2017-09-29$11.98$11.98216,000
2017-09-28$11.71$11.71149,700
2017-09-27$11.46$11.46179,900
2017-09-26$11.58$11.58147,700
2017-09-25$11.06$11.06204,900
2017-09-22$11.51$11.51116,900
2017-09-21$11.59$11.59263,200
2017-09-20$11.38$11.38234,800
2017-09-19$12.30$12.30694,100
2017-09-18$11.80$11.80450,300
2017-09-15$11.23$11.23180,500
2017-09-14$11.68$11.68295,300
2017-09-13$11.60$11.60217,000
2017-09-12$11.36$11.36205,400
2017-09-11$10.74$10.74139,600
2017-09-08$10.22$10.22158,000
2017-09-07$11.14$11.14109,700
2017-09-06$11.23$11.23209,100
2017-09-05$10.99$10.99255,500
2017-09-01$10.86$10.86168,500
2017-08-31$11.05$11.05149,900
2017-08-30$10.93$10.93111,000
2017-08-29$10.57$10.5798,800
2017-08-28$10.39$10.39133,500
2017-08-25$10.27$10.2767,600
2017-08-24$10.37$10.3796,600
2017-08-23$9.94$9.9491,900
2017-08-22$10.24$10.24136,900
2017-08-21$10.14$10.14222,600
2017-08-18$9.68$9.68740,700
2017-08-17$10.14$10.14146,700
2017-08-16$10.65$10.65156,600
2017-08-15$10.99$10.99164,300
2017-08-14$11.03$11.03269,100
2017-08-11$10.50$10.50252,500
2017-08-10$10.50$10.50474,400
2017-08-09$9.64$9.64125,800
2017-08-08$9.44$9.44110,400
2017-08-07$9.27$9.2783,900
2017-08-04$8.97$8.9791,200
2017-08-03$8.22$8.2259,100
2017-08-02$8.73$8.7364,200
2017-08-01$8.81$8.8127,900
2017-07-31$8.83$8.8338,700
2017-07-28$9.11$9.1153,000
2017-07-27$8.78$8.78102,900
2017-07-26$9.45$9.45138,200
2017-07-25$8.97$8.9751,700
2017-07-24$8.97$8.9758,000
2017-07-21$9.06$9.06153,900
2017-07-20$9.14$9.1449,400
2017-07-19$9.31$9.3199,400
2017-07-18$8.98$8.9869,400
2017-07-17$8.93$8.93111,300
2017-07-14$9.01$9.01197,600
2017-07-13$8.41$8.4130,300
2017-07-12$8.42$8.4250,500
2017-07-11$8.28$8.2841,200
2017-07-10$8.50$8.5037,200
2017-07-07$8.51$8.5174,200
2017-07-06$8.55$8.5581,600
2017-07-05$8.48$8.48104,200
2017-07-03$8.31$8.3131,800
2017-06-30$8.44$8.4427,200
2017-06-29$8.40$8.4044,500
2017-06-28$8.30$8.3037,000
2017-06-27$8.09$8.0965,700
2017-06-26$8.03$8.0353,500
2017-06-23$8.29$8.29104,200
2017-06-22$8.28$8.2861,000
2017-06-21$8.11$8.1121,700
2017-06-20$8.01$8.0114,500
2017-06-19$8.17$8.1715,700
2017-06-16$8.09$8.0955,100
2017-06-15$7.98$7.9846,300
2017-06-14$8.42$8.4272,000
2017-06-13$8.58$8.5836,700
2017-06-12$8.71$8.7171,900
2017-06-09$8.40$8.40121,400
2017-06-08$9.05$9.05129,900
2017-06-07$8.67$8.67129,100
2017-06-06$8.25$8.2531,300
2017-06-05$8.11$8.1149,500
2017-06-02$8.27$8.2760,400
2017-06-01$8.10$8.1031,700
2017-05-31$8.07$8.0773,400
2017-05-30$8.38$8.3856,300
2017-05-26$8.25$8.2536,000
2017-05-25$8.33$8.3344,400
2017-05-24$8.16$8.1633,800
2017-05-23$8.30$8.30137,600
2017-05-22$8.23$8.2374,000
2017-05-19$8.03$8.0380,500
2017-05-18$7.44$7.44107,700
2017-05-17$7.42$7.4263,900
2017-05-16$7.66$7.6654,200
2017-05-15$7.85$7.8593,500
2017-05-12$7.75$7.75118,400
2017-05-11$7.69$7.69139,700
2017-05-10$8.51$8.5190,400
2017-05-09$8.43$8.43257,700
2017-05-08$8.19$8.19130,700
2017-05-05$7.23$7.2322,500
2017-05-04$7.14$7.1458,500
2017-05-03$7.13$7.1365,800
2017-05-02$6.88$6.88106,700
2017-05-01$7.45$7.4552,100
2017-04-28$7.04$7.0451,000
2017-04-27$6.60$6.60141,500
2017-04-26$6.11$6.11469,600
2017-04-25$5.50$5.5053,300
2017-04-24$5.55$5.5547,800
2017-04-21$5.36$5.3612,500
2017-04-20$5.43$5.4310,600
2017-04-19$5.30$5.307,700
2017-04-18$5.28$5.2821,600
2017-04-17$5.18$5.189,600
2017-04-13$5.26$5.2612,900
2017-04-12$5.41$5.4113,900
2017-04-11$5.43$5.4393,500
2017-04-10$5.48$5.4838,300
2017-04-07$5.35$5.3524,400
2017-04-06$5.27$5.2725,600
2017-04-05$5.22$5.2217,800
2017-04-04$5.37$5.3720,400
2017-04-03$5.38$5.3834,700
2017-03-31$5.50$5.5016,700
2017-03-30$5.47$5.4712,300
2017-03-29$5.49$5.493,700
2017-03-28$5.37$5.3730,600
2017-03-27$5.60$5.6023,700
2017-03-24$5.59$5.5912,500
2017-03-23$5.57$5.572,900
2017-03-22$5.58$5.5839,200
2017-03-21$5.57$5.5719,200
2017-03-20$5.65$5.6532,500
2017-03-17$5.75$5.7520,600
2017-03-16$5.75$5.7557,000
2017-03-15$5.55$5.5572,000
2017-03-14$5.72$5.72157,800
2017-03-13$5.70$5.7027,200
2017-03-10$5.64$5.6442,200
2017-03-09$5.75$5.7536,900
2017-03-08$5.76$5.7633,300
2017-03-07$5.89$5.8936,000
2017-03-06$5.95$5.9547,500
2017-03-03$6.12$6.129,300
2017-03-02$6.27$6.2719,200
2017-03-01$6.48$6.4858,700
2017-02-28$6.28$6.2843,200
2017-02-27$6.26$6.2620,500
2017-02-24$6.48$6.4834,600
2017-02-23$6.24$6.2424,600
2017-02-22$6.44$6.4436,300
2017-02-21$6.60$6.6096,100
2017-02-17$6.50$6.50147,600
2017-02-16$6.23$6.2328,600
2017-02-15$6.43$6.43122,200
2017-02-14$6.32$6.3271,800
2017-02-13$6.22$6.2264,400
2017-02-10$5.89$5.89135,700
2017-02-09$5.55$5.5590,700
2017-02-08$5.76$5.7613,100
2017-02-07$5.97$5.9713,300
2017-02-06$5.97$5.9789,100
2017-02-03$5.49$5.4915,700
2017-02-02$5.56$5.5617,600
2017-02-01$5.51$5.5157,500
2017-01-31$5.40$5.4027,700
2017-01-30$5.40$5.4092,100
2017-01-27$5.40$5.4067,300
2017-01-26$5.50$5.50143,200
2017-01-25$5.38$5.38599,300
2017-01-24$5.83$5.832,975,100
2017-01-23$4.11$4.1114,900
2017-01-20$4.26$4.267,400
2017-01-19$4.13$4.1315,300
2017-01-18$4.30$4.305,200
2017-01-17$4.18$4.183,900
2017-01-13$4.33$4.334,600
2017-01-12$4.20$4.209,600
2017-01-11$4.49$4.4913,400
2017-01-10$4.52$4.5220,600
2017-01-09$4.33$4.3390,900
2017-01-06$4.11$4.1159,600
2017-01-05$4.07$4.0715,700
2017-01-04$4.00$4.00153,200
2017-01-03$4.16$4.1625,500