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 — 2011

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2011-12-30$8.51$8.51181,000
2011-12-29$8.47$8.47129,800
2011-12-28$8.30$8.3096,100
2011-12-27$8.57$8.57118,700
2011-12-23$8.54$8.54200,200
2011-12-22$8.58$8.58171,800
2011-12-21$8.42$8.42207,300
2011-12-20$8.63$8.63136,100
2011-12-19$8.00$8.00126,800
2011-12-16$8.08$8.08184,500
2011-12-15$8.07$8.07183,400
2011-12-14$7.98$7.98175,700
2011-12-13$8.12$8.12109,000
2011-12-12$8.42$8.42116,900
2011-12-09$8.69$8.69146,900
2011-12-08$8.10$8.10109,400
2011-12-07$8.60$8.6096,600
2011-12-06$8.37$8.37166,600
2011-12-05$8.82$8.82156,200
2011-12-02$8.76$8.76156,700
2011-12-01$9.11$9.11146,200
2011-11-30$9.08$9.08176,900
2011-11-29$8.32$8.3265,600
2011-11-28$8.39$8.39246,100
2011-11-25$7.86$7.8660,000
2011-11-23$7.86$7.86207,000
2011-11-22$8.45$8.45198,100
2011-11-21$8.33$8.33225,800
2011-11-18$8.73$8.73224,800
2011-11-17$8.69$8.69349,200
2011-11-16$8.62$8.621,232,600
2011-11-15$10.37$10.37317,600
2011-11-14$10.22$10.22161,800
2011-11-11$10.37$10.37177,500
2011-11-10$9.79$9.79220,200
2011-11-09$9.99$9.99175,400
2011-11-08$10.78$10.78145,200
2011-11-07$10.78$10.78204,100
2011-11-04$11.27$11.27300,400
2011-11-03$10.71$10.71149,200
2011-11-02$10.64$10.64116,700
2011-11-01$10.07$10.07178,600
2011-10-31$10.22$10.22201,000
2011-10-28$11.28$11.28158,500
2011-10-27$11.01$11.01349,600
2011-10-26$9.79$9.79403,100
2011-10-25$10.37$10.37281,900
2011-10-24$11.33$11.33485,500
2011-10-21$9.13$9.1397,900
2011-10-20$9.02$9.02189,600
2011-10-19$9.10$9.10166,900
2011-10-18$9.89$9.89176,000
2011-10-17$9.20$9.20158,700
2011-10-14$9.81$9.8178,000
2011-10-13$9.59$9.59127,400
2011-10-12$9.54$9.54301,900
2011-10-11$8.89$8.89177,700
2011-10-10$8.60$8.60186,900
2011-10-07$8.20$8.20163,800
2011-10-06$8.85$8.85157,200
2011-10-05$8.53$8.53214,900
2011-10-04$7.96$7.96317,800
2011-10-03$7.51$7.51257,300
2011-09-30$8.00$8.00217,600
2011-09-29$8.22$8.22422,200
2011-09-28$8.63$8.63253,400
2011-09-27$9.29$9.29212,700
2011-09-26$9.23$9.23172,400
2011-09-23$9.24$9.24159,100
2011-09-22$9.01$9.01238,800
2011-09-21$9.39$9.39184,600
2011-09-20$9.84$9.84162,900
2011-09-19$10.49$10.49156,900
2011-09-16$11.07$11.07247,200
2011-09-15$10.68$10.68136,800
2011-09-14$10.86$10.86186,400
2011-09-13$10.93$10.93432,200
2011-09-12$10.02$10.02167,000
2011-09-09$10.04$10.04205,100
2011-09-08$9.89$9.89179,300
2011-09-07$10.39$10.39206,600
2011-09-06$9.98$9.98189,000
2011-09-02$10.05$10.05238,100
2011-09-01$10.50$10.50230,800
2011-08-31$10.85$10.85299,100
2011-08-30$11.17$11.17204,600
2011-08-29$11.39$11.39136,300
2011-08-26$10.82$10.82182,500
2011-08-25$10.37$10.37253,400
2011-08-24$10.92$10.92435,900
2011-08-23$10.36$10.36535,400
2011-08-22$9.88$9.88405,000
2011-08-19$10.30$10.30268,700
2011-08-18$10.38$10.38434,500
2011-08-17$11.46$11.46272,800
2011-08-16$11.90$11.90426,400
2011-08-15$11.85$11.85418,000
2011-08-12$11.63$11.63640,700
2011-08-11$11.77$11.771,073,900
2011-08-10$11.06$11.061,828,000
2011-08-09$16.56$16.56529,700
2011-08-08$16.18$16.18567,600
2011-08-05$16.40$16.40327,600
2011-08-04$16.26$16.26347,400
2011-08-03$17.71$17.71250,200
2011-08-02$17.80$17.80383,700
2011-08-01$18.42$18.42396,900
2011-07-29$17.95$17.95408,900
2011-07-28$17.17$17.17246,500
2011-07-27$16.60$16.60452,500
2011-07-26$17.47$17.47188,200
2011-07-25$18.04$18.04164,500
2011-07-22$18.74$18.74249,200
2011-07-21$18.07$18.07292,300
2011-07-20$18.32$18.32172,200
2011-07-19$18.15$18.15310,400
2011-07-18$17.96$17.96428,300
2011-07-15$17.90$17.90175,700
2011-07-14$17.77$17.77278,800
2011-07-13$17.94$17.94409,000
2011-07-12$17.98$17.98687,300
2011-07-11$19.51$19.51187,600
2011-07-08$20.42$20.42325,900
2011-07-07$20.09$20.09356,000
2011-07-06$21.06$21.06194,900
2011-07-05$20.93$20.93267,700
2011-07-01$21.25$21.25282,700
2011-06-30$20.64$20.64131,000
2011-06-29$20.21$20.21350,700
2011-06-28$20.19$20.19238,500
2011-06-27$19.65$19.65319,800
2011-06-24$18.59$18.591,796,000
2011-06-23$19.25$19.25196,400
2011-06-22$18.76$18.76151,900
2011-06-21$18.69$18.69202,100
2011-06-20$18.22$18.22278,600
2011-06-17$17.56$17.56271,100
2011-06-16$18.11$18.11188,800
2011-06-15$18.61$18.61130,300
2011-06-14$19.18$19.18144,300
2011-06-13$18.43$18.43265,500
2011-06-10$18.54$18.54343,500
2011-06-09$19.15$19.15137,400
2011-06-08$19.19$19.19262,500
2011-06-07$19.89$19.89203,900
2011-06-06$19.77$19.77218,200
2011-06-03$20.27$20.27144,000
2011-06-02$20.66$20.66134,500
2011-06-01$21.09$21.09147,000
2011-05-31$21.88$21.88249,900
2011-05-27$21.40$21.40140,200
2011-05-26$21.65$21.65158,300
2011-05-25$21.32$21.32361,900
2011-05-24$20.45$20.45284,400
2011-05-23$20.47$20.47267,100
2011-05-20$21.91$21.91442,300
2011-05-19$21.56$21.56219,600
2011-05-18$21.85$21.85186,900
2011-05-17$21.31$21.31588,500
2011-05-16$22.65$22.65417,900
2011-05-13$23.34$23.34588,200
2011-05-12$22.52$22.52532,000
2011-05-11$21.55$21.551,300,000
2011-05-10$21.17$21.17440,400
2011-05-09$20.26$20.26236,000
2011-05-06$20.23$20.23179,000
2011-05-05$19.89$19.89297,200
2011-05-04$20.16$20.16565,200
2011-05-03$21.90$21.90297,000
2011-05-02$22.35$22.35141,000
2011-04-29$22.88$22.88207,000
2011-04-28$21.96$21.96187,000
2011-04-27$22.50$22.50186,000
2011-04-26$22.27$22.27162,900
2011-04-25$22.40$22.40102,000
2011-04-21$22.46$22.46184,400
2011-04-20$22.40$22.40230,300
2011-04-19$22.26$22.26191,000
2011-04-18$22.25$22.25221,200
2011-04-15$23.18$23.18155,700
2011-04-14$23.27$23.27214,400
2011-04-13$23.22$23.22423,200
2011-04-12$22.31$22.31217,900
2011-04-11$22.52$22.52255,200
2011-04-08$23.15$23.15229,100
2011-04-07$23.68$23.68259,900
2011-04-06$24.23$24.23421,600
2011-04-05$25.30$25.30141,700
2011-04-04$25.27$25.27258,100
2011-04-01$25.45$25.45238,400
2011-03-31$25.24$25.24143,300
2011-03-30$25.55$25.55193,400
2011-03-29$25.13$25.13222,800
2011-03-28$24.79$24.79293,200
2011-03-25$24.31$24.31315,400
2011-03-24$24.00$24.00267,100
2011-03-23$22.95$22.95325,100
2011-03-22$21.84$21.84175,900
2011-03-21$21.76$21.76200,700
2011-03-18$21.54$21.54267,700
2011-03-17$21.89$21.89219,000
2011-03-16$21.45$21.45345,100
2011-03-15$22.13$22.13437,100
2011-03-14$21.15$21.15258,800
2011-03-11$21.46$21.46313,300
2011-03-10$20.75$20.75409,500
2011-03-09$21.88$21.88201,700
2011-03-08$22.28$22.28246,500
2011-03-07$22.61$22.61338,700
2011-03-04$23.58$23.58260,000
2011-03-03$23.90$23.90468,600
2011-03-02$22.37$22.37240,400
2011-03-01$22.06$22.06274,700
2011-02-28$22.97$22.97443,900
2011-02-25$22.99$22.99298,700
2011-02-24$21.96$21.96386,400
2011-02-23$22.11$22.11860,200
2011-02-22$22.80$22.80704,500
2011-02-18$25.05$25.05442,200
2011-02-17$24.83$24.83439,100
2011-02-16$24.43$24.43523,100
2011-02-15$24.70$24.70274,000
2011-02-14$24.64$24.64480,300
2011-02-11$25.38$25.38661,800
2011-02-10$24.50$24.501,481,600
2011-02-09$26.66$26.661,572,100
2011-02-08$28.93$28.93584,200
2011-02-07$28.22$28.22420,900
2011-02-04$27.16$27.16343,400
2011-02-03$28.00$28.00262,500
2011-02-02$28.19$28.19515,200
2011-02-01$26.39$26.39340,200
2011-01-31$25.61$25.61334,500
2011-01-28$25.67$25.67253,800
2011-01-27$26.75$26.75256,000
2011-01-26$25.87$25.87170,300
2011-01-25$25.21$25.21216,100
2011-01-24$25.88$25.88215,700
2011-01-21$24.94$24.94203,800
2011-01-20$25.42$25.42313,700
2011-01-19$26.46$26.46559,300
2011-01-18$27.94$27.94295,200
2011-01-14$27.30$27.30352,600
2011-01-13$27.92$27.92461,000
2011-01-12$29.07$29.07535,800
2011-01-11$28.21$28.21782,900
2011-01-10$25.73$25.73177,300
2011-01-07$25.14$25.14182,200
2011-01-06$25.06$25.06128,700
2011-01-05$25.02$25.02223,700
2011-01-04$24.42$24.42665,000
2011-01-03$25.99$25.99182,000