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 — 1998

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1998-12-31$1.25$1.2515,650——
1998-12-30$1.25$1.2529,950——
1998-12-29$1.25$1.2545,900——
1998-12-28$1.25$1.2531,000——
1998-12-24$1.25$1.2513,350——
1998-12-23$1.25$1.2523,850——
1998-12-22$1.44$1.4415,400——
1998-12-21$1.31$1.316,950——
1998-12-18$1.13$1.1329,200——
1998-12-17$1.38$1.3837,150——
1998-12-16$1.50$1.501,350——
1998-12-15$1.38$1.3811,900——
1998-12-14$1.50$1.504,150——
1998-12-11$1.50$1.503,400——
1998-12-10$1.50$1.505,350——
1998-12-09$1.50$1.504,000——
1998-12-08$1.50$1.5033,150——
1998-12-07$1.50$1.5026,650——
1998-12-04$1.50$1.5044,800——
1998-12-03$1.56$1.5612,300——
1998-12-02$1.56$1.5619,200——
1998-12-01$1.56$1.5610,200——
1998-11-30$1.31$1.3117,150——
1998-11-27$1.44$1.446,100——
1998-11-25$1.44$1.447,100——
1998-11-24$1.19$1.19106,050——
1998-11-23$1.56$1.566,350——
1998-11-20$1.50$1.503,750——
1998-11-19$1.50$1.509,500——
1998-11-18$1.56$1.561,000——
1998-11-17$1.56$1.5610,550——
1998-11-16$1.56$1.564,700——
1998-11-13$1.56$1.563,750——
1998-11-12$1.50$1.507,800——
1998-11-11$1.88$1.8812,350——
1998-11-10$1.94$1.9410,150——
1998-11-09$1.94$1.9435,900——
1998-11-06$1.63$1.639,450——
1998-11-05$1.44$1.442,550——
1998-11-04$1.44$1.448,500——
1998-11-03$1.63$1.632,450——
1998-11-02$1.50$1.508,900——
1998-10-30$1.50$1.504,300——
1998-10-29$1.50$1.508,100——
1998-10-28$1.44$1.44450——
1998-10-27$1.63$1.639,950——
1998-10-26$1.38$1.3810,000——
1998-10-23$1.25$1.253,050——
1998-10-22$1.38$1.383,050——
1998-10-21$1.44$1.44500——
1998-10-20$1.38$1.3810,250——
1998-10-19$1.25$1.250——
1998-10-16$1.25$1.254,500——
1998-10-15$1.00$1.007,700——
1998-10-14$1.13$1.1313,400——
1998-10-13$1.31$1.312,700——
1998-10-12$1.38$1.381,700——
1998-10-09$1.25$1.252,500——
1998-10-08$1.25$1.256,300——
1998-10-07$1.31$1.311,250——
1998-10-06$1.25$1.255,550——
1998-10-05$1.31$1.313,650——
1998-10-02$1.38$1.385,300——
1998-10-01$1.50$1.5022,550——
1998-09-30$1.50$1.50250——
1998-09-29$1.31$1.311,250——
1998-09-28$1.50$1.508,350——
1998-09-25$1.63$1.633,650——
1998-09-24$1.56$1.561,600——
1998-09-23$1.56$1.567,500——
1998-09-22$1.50$1.5013,200——
1998-09-21$1.50$1.50900——
1998-09-18$1.50$1.502,150——
1998-09-17$1.31$1.3114,550——
1998-09-16$1.31$1.316,050——
1998-09-15$1.13$1.1322,650——
1998-09-14$1.13$1.1313,400——
1998-09-11$1.19$1.1916,600——
1998-09-10$1.56$1.564,300——
1998-09-09$1.63$1.631,850——
1998-09-08$1.31$1.319,800——
1998-09-04$1.31$1.313,400——
1998-09-03$1.50$1.5020,750——
1998-09-02$1.63$1.636,050——
1998-09-01$1.63$1.632,000——
1998-08-31$1.63$1.638,900——
1998-08-28$1.69$1.698,500——
1998-08-27$1.63$1.63900——
1998-08-26$1.69$1.6916,600——
1998-08-25$1.75$1.751,350——
1998-08-24$1.63$1.637,600——
1998-08-21$1.75$1.7517,600——
1998-08-20$1.63$1.639,750——
1998-08-19$1.81$1.8117,900——
1998-08-18$1.81$1.814,500——
1998-08-17$1.94$1.943,550——
1998-08-14$1.88$1.885,000——
1998-08-13$1.81$1.816,550——
1998-08-12$1.94$1.941,600——
1998-08-11$1.94$1.9427,450——
1998-08-10$1.88$1.8820,200——
1998-08-07$1.88$1.881,150——
1998-08-06$1.63$1.6327,500——
1998-08-05$2.00$2.0022,850——
1998-08-04$1.81$1.817,750——
1998-08-03$2.00$2.0021,900——
1998-07-31$2.06$2.063,350——
1998-07-30$2.13$2.1310,400——
1998-07-29$2.13$2.131,500——
1998-07-28$2.25$2.2518,050——
1998-07-27$2.31$2.3113,200——
1998-07-24$2.38$2.3812,100——
1998-07-23$2.31$2.311,600——
1998-07-22$2.38$2.3836,850——
1998-07-21$2.50$2.5011,250——
1998-07-20$2.50$2.5015,450——
1998-07-17$2.50$2.501,500——
1998-07-16$2.50$2.5015,050——
1998-07-15$2.56$2.565,550——
1998-07-14$2.50$2.5011,050——
1998-07-13$2.50$2.5013,250——
1998-07-10$2.56$2.56950——
1998-07-09$2.50$2.508,100——
1998-07-08$2.50$2.508,700——
1998-07-07$2.53$2.5314,600——
1998-07-06$2.50$2.5011,000——
1998-07-02$2.56$2.566,000——
1998-07-01$2.56$2.5618,900——
1998-06-30$2.56$2.5631,950——
1998-06-29$2.69$2.6915,450——
1998-06-26$2.53$2.5352,700——
1998-06-25$2.69$2.6931,900——
1998-06-24$2.69$2.6985,950——
1998-06-23$3.69$3.693,400——
1998-06-22$3.56$3.5611,650——
1998-06-19$3.75$3.755,050——
1998-06-18$3.50$3.5016,100——
1998-06-17$3.63$3.6311,150——
1998-06-16$3.63$3.6313,350——
1998-06-15$3.63$3.633,400——
1998-06-12$3.69$3.694,050——
1998-06-11$3.63$3.636,800——
1998-06-10$3.75$3.7515,250——
1998-06-09$3.75$3.7511,000——
1998-06-08$3.81$3.8110,300——
1998-06-05$3.88$3.8818,800——
1998-06-04$4.00$4.0013,450——
1998-06-03$4.25$4.257,400——
1998-06-02$4.13$4.132,900——
1998-06-01$4.13$4.134,600——
1998-05-29$4.25$4.2510,450——
1998-05-28$4.13$4.134,050——
1998-05-27$4.00$4.0020,300——
1998-05-26$4.25$4.2512,750——
1998-05-22$4.50$4.507,600——
1998-05-21$4.50$4.5021,350——
1998-05-20$4.75$4.7541,950——
1998-05-19$4.88$4.8862,900——
1998-05-18$4.88$4.8890,950——
1998-05-15$4.63$4.6357,800——
1998-05-14$4.38$4.3830,150——
1998-05-13$4.38$4.38223,250——
1998-05-12$3.81$3.819,300——
1998-05-11$3.75$3.756,000——
1998-05-08$3.69$3.6911,300——
1998-05-07$3.75$3.7513,000——
1998-05-06$3.56$3.5641,950——
1998-05-05$3.75$3.7513,550——
1998-05-04$3.75$3.7521,450——
1998-05-01$3.88$3.886,200——
1998-04-30$3.88$3.883,750——
1998-04-29$4.25$4.259,000——
1998-04-28$3.75$3.757,150——
1998-04-27$3.75$3.7512,300——
1998-04-24$4.13$4.1310,150——
1998-04-23$4.50$4.5030,750——
1998-04-22$4.13$4.1368,750——
1998-04-21$3.75$3.7512,950——
1998-04-20$3.69$3.6912,800——
1998-04-17$3.75$3.757,650——
1998-04-16$3.63$3.639,100——
1998-04-15$3.63$3.636,450——
1998-04-14$3.75$3.75600——
1998-04-13$3.75$3.7511,100——
1998-04-09$3.75$3.757,900——
1998-04-08$3.69$3.692,900——
1998-04-07$3.81$3.8111,250——
1998-04-06$3.88$3.882,850——
1998-04-03$3.63$3.6312,650——
1998-04-02$3.63$3.637,350——
1998-04-01$3.75$3.752,850——
1998-03-31$3.75$3.752,600——
1998-03-30$3.75$3.7514,300——
1998-03-27$3.81$3.8115,750——
1998-03-26$3.88$3.8814,450——
1998-03-25$3.63$3.6314,750——
1998-03-24$3.88$3.887,150——
1998-03-23$4.00$4.0018,000——
1998-03-20$3.63$3.6317,650——
1998-03-19$3.88$3.885,150——
1998-03-18$3.75$3.756,500——
1998-03-17$3.63$3.632,750——
1998-03-16$4.00$4.004,850——
1998-03-13$3.88$3.887,350——
1998-03-12$3.50$3.5019,950——
1998-03-11$3.88$3.8814,750——
1998-03-10$4.00$4.00100——
1998-03-09$3.88$3.881,150——
1998-03-06$4.00$4.007,650——
1998-03-05$4.00$4.006,550——
1998-03-04$4.00$4.006,000——
1998-03-03$3.88$3.888,150——
1998-03-02$3.94$3.944,250——
1998-02-27$4.25$4.2513,900——
1998-02-26$3.81$3.8114,350——
1998-02-25$4.25$4.255,800——
1998-02-24$4.00$4.006,000——
1998-02-23$4.00$4.0010,900——
1998-02-20$4.00$4.002,800——
1998-02-19$4.00$4.0011,950——
1998-02-18$4.13$4.1312,700——
1998-02-17$4.00$4.0028,000——
1998-02-13$4.13$4.132,350——
1998-02-12$4.25$4.258,250——
1998-02-11$4.38$4.382,500——
1998-02-10$4.38$4.3831,850——
1998-02-09$3.81$3.818,400——
1998-02-06$4.25$4.257,250——
1998-02-05$4.00$4.002,800——
1998-02-04$4.25$4.2515,200——
1998-02-03$4.13$4.1310,750——
1998-02-02$4.38$4.3815,600——
1998-01-30$3.88$3.8825,000——
1998-01-29$4.06$4.0619,750——
1998-01-28$4.50$4.508,550——
1998-01-27$3.94$3.9422,050——
1998-01-26$4.50$4.505,000——
1998-01-23$4.63$4.637,100——
1998-01-22$4.63$4.63750——
1998-01-21$4.50$4.5010,350——
1998-01-20$5.00$5.005,650——
1998-01-16$5.25$5.252,850——
1998-01-15$5.13$5.136,650——
1998-01-14$5.00$5.0013,000——
1998-01-13$4.88$4.887,550——
1998-01-12$5.25$5.253,800——
1998-01-09$5.25$5.254,100——
1998-01-08$5.75$5.7513,200——
1998-01-07$5.50$5.5013,450——
1998-01-06$5.00$5.0017,850——
1998-01-05$5.63$5.6310,150——
1998-01-02$5.31$5.312,500——