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 — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$11.07$11.07142,400
2009-12-30$10.94$10.94102,200
2009-12-29$11.01$11.01172,900
2009-12-28$10.74$10.74157,000
2009-12-24$11.15$11.1580,000
2009-12-23$10.98$10.98118,100
2009-12-22$11.03$11.03302,300
2009-12-21$10.10$10.10159,500
2009-12-18$10.27$10.27419,000
2009-12-17$8.20$8.2080,100
2009-12-16$8.21$8.21170,100
2009-12-15$7.44$7.4435,100
2009-12-14$7.41$7.4161,700
2009-12-11$7.12$7.1233,900
2009-12-10$6.72$6.7210,600
2009-12-09$6.50$6.504,400
2009-12-08$6.50$6.5022,500
2009-12-07$6.53$6.5332,900
2009-12-04$6.59$6.5937,000
2009-12-03$6.55$6.5525,500
2009-12-02$6.35$6.3528,900
2009-12-01$5.97$5.9750,100
2009-11-30$5.98$5.9899,900
2009-11-27$6.20$6.205,500
2009-11-25$6.13$6.1397,000
2009-11-24$6.44$6.4430,500
2009-11-23$6.36$6.3626,300
2009-11-20$6.15$6.1530,500
2009-11-19$6.42$6.4237,600
2009-11-18$6.50$6.5048,800
2009-11-17$6.51$6.51119,300
2009-11-16$6.10$6.1088,600
2009-11-13$5.80$5.8019,800
2009-11-12$5.77$5.7733,400
2009-11-11$5.80$5.8049,800
2009-11-10$5.47$5.4721,700
2009-11-09$5.45$5.4561,300
2009-11-06$5.10$5.105,900
2009-11-05$5.06$5.0622,500
2009-11-04$5.10$5.1065,200
2009-11-03$5.10$5.1078,300
2009-11-02$5.06$5.0650,100
2009-10-30$5.40$5.4025,200
2009-10-29$5.58$5.5812,500
2009-10-28$5.53$5.5358,000
2009-10-27$5.91$5.91139,800
2009-10-26$5.80$5.8017,500
2009-10-23$5.85$5.8536,600
2009-10-22$6.08$6.0828,300
2009-10-21$6.05$6.05119,300
2009-10-20$6.24$6.24203,100
2009-10-19$5.80$5.8038,700
2009-10-16$5.69$5.6923,100
2009-10-15$5.71$5.7115,200
2009-10-14$5.86$5.8685,900
2009-10-13$5.69$5.6952,100
2009-10-12$5.40$5.4014,000
2009-10-09$5.28$5.288,300
2009-10-08$5.07$5.0729,300
2009-10-07$5.01$5.0115,700
2009-10-06$5.27$5.278,000
2009-10-05$5.18$5.183,600
2009-10-02$5.10$5.1014,500
2009-10-01$5.16$5.1617,600
2009-09-30$5.30$5.3012,600
2009-09-29$5.46$5.4623,200
2009-09-28$5.49$5.4939,200
2009-09-25$5.34$5.3410,700
2009-09-24$5.74$5.7424,200
2009-09-23$5.89$5.8911,300
2009-09-22$5.81$5.8116,100
2009-09-21$5.69$5.6924,600
2009-09-18$5.50$5.5035,300
2009-09-17$5.53$5.5348,100
2009-09-16$5.33$5.3315,100
2009-09-15$5.20$5.2018,200
2009-09-14$5.09$5.0934,700
2009-09-11$5.01$5.0138,600
2009-09-10$5.09$5.0925,300
2009-09-09$5.05$5.0518,400
2009-09-08$5.01$5.0112,200
2009-09-04$5.01$5.0112,200
2009-09-03$4.94$4.943,700
2009-09-02$4.85$4.858,000
2009-09-01$4.90$4.9020,300
2009-08-31$4.95$4.9545,200
2009-08-28$5.03$5.0316,600
2009-08-27$5.03$5.039,400
2009-08-26$5.03$5.0316,700
2009-08-25$4.95$4.9513,700
2009-08-24$5.06$5.067,300
2009-08-21$5.05$5.0517,300
2009-08-20$5.04$5.047,800
2009-08-19$4.90$4.902,000
2009-08-18$4.99$4.997,800
2009-08-17$4.86$4.864,800
2009-08-14$4.91$4.919,200
2009-08-13$4.93$4.9351,200
2009-08-12$5.05$5.0527,800
2009-08-11$5.08$5.0859,300
2009-08-10$5.37$5.3742,900
2009-08-07$5.63$5.6328,000
2009-08-06$5.59$5.5935,000
2009-08-05$5.64$5.6425,400
2009-08-04$5.83$5.8333,500
2009-08-03$6.00$6.0047,300
2009-07-31$5.74$5.744,900
2009-07-30$5.65$5.6512,200
2009-07-29$5.65$5.6511,900
2009-07-28$5.57$5.5717,500
2009-07-27$5.69$5.6920,800
2009-07-24$5.56$5.5619,500
2009-07-23$5.52$5.5219,400
2009-07-22$5.45$5.4538,700
2009-07-21$4.98$4.9822,600
2009-07-20$4.89$4.897,600
2009-07-17$4.94$4.9418,200
2009-07-16$5.00$5.006,800
2009-07-15$5.00$5.0011,800
2009-07-14$4.84$4.8419,100
2009-07-13$4.83$4.836,500
2009-07-10$4.73$4.7330,600
2009-07-09$4.27$4.2714,500
2009-07-08$4.33$4.3358,700
2009-07-07$4.56$4.5610,800
2009-07-06$4.78$4.7846,600
2009-07-02$4.77$4.7726,000
2009-07-01$4.77$4.7721,200
2009-06-30$4.85$4.8565,500
2009-06-29$4.80$4.8029,400
2009-06-26$4.72$4.7235,600
2009-06-25$5.01$5.0123,100
2009-06-24$5.10$5.1013,600
2009-06-23$4.89$4.8940,000
2009-06-22$5.17$5.1718,000
2009-06-19$5.46$5.4661,200
2009-06-18$5.33$5.3311,900
2009-06-17$5.52$5.5213,000
2009-06-16$5.60$5.6015,500
2009-06-15$5.53$5.5341,200
2009-06-12$5.71$5.7125,800
2009-06-11$5.95$5.9525,400
2009-06-10$5.68$5.6846,700
2009-06-09$5.43$5.4338,300
2009-06-08$5.18$5.1844,600
2009-06-05$5.07$5.0742,900
2009-06-04$4.86$4.8695,100
2009-06-03$4.98$4.9852,800
2009-06-02$5.65$5.6574,400
2009-06-01$5.00$5.0059,000
2009-05-29$4.55$4.5521,200
2009-05-28$4.53$4.5316,600
2009-05-27$4.45$4.4539,900
2009-05-26$4.45$4.4530,400
2009-05-22$4.50$4.5015,000
2009-05-21$4.39$4.3925,600
2009-05-20$4.45$4.4541,300
2009-05-19$4.15$4.1511,500
2009-05-18$4.16$4.1627,400
2009-05-15$4.13$4.1327,300
2009-05-14$4.10$4.1027,300
2009-05-13$3.93$3.9348,800
2009-05-12$4.38$4.38158,200
2009-05-11$4.83$4.8322,800
2009-05-08$5.00$5.00142,200
2009-05-07$5.01$5.0175,300
2009-05-06$5.20$5.20113,100
2009-05-05$4.73$4.7331,500
2009-05-04$4.66$4.6658,100
2009-05-01$4.60$4.60106,500
2009-04-30$4.19$4.19130,800
2009-04-29$3.80$3.8040,200
2009-04-28$3.83$3.8348,300
2009-04-27$3.66$3.6612,800
2009-04-24$3.67$3.6731,500
2009-04-23$3.76$3.7635,400
2009-04-22$3.72$3.7211,500
2009-04-21$3.62$3.6274,800
2009-04-20$3.26$3.2689,400
2009-04-17$3.67$3.6720,300
2009-04-16$3.75$3.7524,500
2009-04-15$3.69$3.69100,800
2009-04-14$3.34$3.3462,700
2009-04-13$3.30$3.3063,800
2009-04-09$3.29$3.2997,200
2009-04-08$3.28$3.2816,300
2009-04-07$3.25$3.2512,400
2009-04-06$3.24$3.2423,500
2009-04-03$3.27$3.2723,900
2009-04-02$3.24$3.2453,000
2009-04-01$3.21$3.2130,300
2009-03-31$3.22$3.2214,000
2009-03-30$3.14$3.1451,900
2009-03-27$3.46$3.4622,200
2009-03-26$3.51$3.5155,300
2009-03-25$3.26$3.2642,200
2009-03-24$3.28$3.2819,300
2009-03-23$3.30$3.3032,500
2009-03-20$3.06$3.0611,700
2009-03-19$3.05$3.0529,800
2009-03-18$3.32$3.3213,500
2009-03-17$3.33$3.339,600
2009-03-16$3.16$3.1630,000
2009-03-13$3.30$3.3026,200
2009-03-12$3.20$3.2033,900
2009-03-11$3.14$3.1490,600
2009-03-10$3.00$3.0053,100
2009-03-09$2.98$2.9836,400
2009-03-06$2.73$2.7327,300
2009-03-05$2.66$2.6635,500
2009-03-04$2.74$2.7430,600
2009-03-03$2.79$2.7934,100
2009-03-02$2.86$2.8636,600
2009-02-27$2.96$2.9639,600
2009-02-26$2.99$2.9943,800
2009-02-25$2.99$2.9937,000
2009-02-24$3.01$3.0140,400
2009-02-23$2.85$2.8585,800
2009-02-20$3.01$3.0152,400
2009-02-19$3.20$3.2019,100
2009-02-18$3.29$3.2921,100
2009-02-17$3.27$3.2738,200
2009-02-13$3.38$3.3832,200
2009-02-12$3.40$3.4082,200
2009-02-11$3.70$3.7014,000
2009-02-10$3.69$3.69123,500
2009-02-09$4.20$4.2054,500
2009-02-06$4.22$4.2239,600
2009-02-05$4.17$4.1743,000
2009-02-04$4.09$4.0922,800
2009-02-03$4.08$4.0827,300
2009-02-02$4.07$4.0741,800
2009-01-30$4.04$4.0433,100
2009-01-29$4.13$4.1317,400
2009-01-28$4.31$4.3135,300
2009-01-27$4.16$4.1633,900
2009-01-26$4.17$4.1741,500
2009-01-23$4.22$4.2215,900
2009-01-22$4.20$4.2029,300
2009-01-21$4.28$4.2828,600
2009-01-20$4.10$4.1057,400
2009-01-16$4.20$4.2043,400
2009-01-15$4.28$4.2864,700
2009-01-14$4.25$4.25102,300
2009-01-13$4.35$4.3569,200
2009-01-12$4.35$4.35100,600
2009-01-09$4.37$4.3728,500
2009-01-08$4.49$4.4958,200
2009-01-07$4.24$4.2495,900
2009-01-06$4.49$4.49113,400
2009-01-05$4.00$4.00246,700
2009-01-02$3.77$3.7737,700