NASDAQ:MKSI | Historical Stock Price | MKS 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
1999-03-30 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$9.31$20.64$45.74$101.38$224.72$498.091999-03-302026-08-27

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$17.40$17.40194,000
2009-12-30$17.52$17.52243,300
2009-12-29$17.24$17.24318,900
2009-12-28$16.94$16.94172,300
2009-12-24$16.68$16.6821,300
2009-12-23$16.65$16.65132,600
2009-12-22$16.37$16.37225,500
2009-12-21$16.40$16.40126,100
2009-12-18$16.29$16.29971,600
2009-12-17$15.92$15.92185,300
2009-12-16$16.10$16.10227,500
2009-12-15$16.36$16.36137,500
2009-12-14$16.52$16.52116,400
2009-12-11$16.11$16.11169,100
2009-12-10$16.14$16.14241,500
2009-12-09$16.93$16.93172,000
2009-12-08$16.97$16.97185,100
2009-12-07$17.08$17.0895,600
2009-12-04$17.00$17.00253,900
2009-12-03$16.21$16.21220,700
2009-12-02$16.06$16.06125,000
2009-12-01$15.78$15.78213,200
2009-11-30$15.15$15.15231,500
2009-11-27$15.22$15.2295,000
2009-11-25$15.47$15.4764,000
2009-11-24$15.62$15.62126,600
2009-11-23$15.93$15.93125,600
2009-11-20$15.66$15.66144,800
2009-11-19$15.55$15.55175,900
2009-11-18$16.39$16.39109,600
2009-11-17$16.56$16.56108,100
2009-11-16$16.60$16.60168,300
2009-11-13$15.93$15.93120,700
2009-11-12$15.88$15.88209,400
2009-11-11$16.30$16.30159,900
2009-11-10$15.91$15.91153,400
2009-11-09$16.11$16.11150,500
2009-11-06$15.76$15.76160,400
2009-11-05$15.83$15.83156,100
2009-11-04$15.37$15.37403,400
2009-11-03$15.25$15.25239,100
2009-11-02$15.41$15.41285,600
2009-10-30$15.64$15.64374,600
2009-10-29$16.40$16.40640,400
2009-10-28$16.11$16.11504,800
2009-10-27$16.26$16.26504,800
2009-10-26$17.14$17.14378,000
2009-10-23$17.45$17.45436,100
2009-10-22$18.30$18.30523,000
2009-10-21$18.54$18.54336,200
2009-10-20$19.11$19.11153,900
2009-10-19$19.38$19.38110,900
2009-10-16$19.02$19.02257,200
2009-10-15$19.51$19.51173,300
2009-10-14$20.11$20.11169,900
2009-10-13$19.88$19.88173,600
2009-10-12$19.53$19.53260,500
2009-10-09$19.43$19.43339,800
2009-10-08$19.16$19.16249,000
2009-10-07$19.15$19.15219,800
2009-10-06$19.46$19.46243,300
2009-10-05$19.10$19.10432,600
2009-10-02$18.77$18.77218,700
2009-10-01$18.89$18.89379,500
2009-09-30$19.29$19.29291,900
2009-09-29$19.51$19.51281,500
2009-09-28$19.54$19.54136,600
2009-09-25$19.16$19.1699,800
2009-09-24$19.37$19.37127,700
2009-09-23$19.86$19.86143,200
2009-09-22$20.30$20.30176,300
2009-09-21$20.00$20.00140,400
2009-09-18$20.06$20.06295,000
2009-09-17$20.33$20.3361,700
2009-09-16$20.48$20.48154,900
2009-09-15$20.17$20.17170,500
2009-09-14$20.27$20.27129,300
2009-09-11$20.30$20.30197,900
2009-09-10$20.40$20.40215,000
2009-09-09$19.81$19.81144,700
2009-09-08$19.44$19.44216,100
2009-09-04$18.99$18.99230,600
2009-09-03$18.45$18.45158,300
2009-09-02$18.16$18.16270,200
2009-09-01$18.43$18.43416,200
2009-08-31$18.43$18.43184,000
2009-08-28$18.82$18.82247,500
2009-08-27$18.30$18.30169,800
2009-08-26$18.62$18.62119,300
2009-08-25$18.71$18.71166,200
2009-08-24$18.50$18.50282,700
2009-08-21$18.27$18.27189,500
2009-08-20$17.57$17.57184,300
2009-08-19$17.91$17.91105,700
2009-08-18$17.71$17.71158,500
2009-08-17$17.47$17.47185,600
2009-08-14$18.06$18.06206,100
2009-08-13$18.56$18.56228,600
2009-08-12$18.50$18.50372,800
2009-08-11$18.24$18.24108,200
2009-08-10$18.58$18.58104,900
2009-08-07$18.85$18.85349,900
2009-08-06$18.65$18.65233,100
2009-08-05$19.28$19.28210,800
2009-08-04$19.63$19.63206,500
2009-08-03$19.70$19.70255,500
2009-07-31$19.37$19.37419,300
2009-07-30$19.65$19.65377,200
2009-07-29$19.20$19.20258,800
2009-07-28$19.24$19.24269,800
2009-07-27$19.35$19.35478,600
2009-07-24$19.53$19.53381,600
2009-07-23$19.87$19.87888,800
2009-07-22$19.34$19.34925,000
2009-07-21$17.28$17.28513,200
2009-07-20$17.10$17.10300,500
2009-07-17$17.06$17.06324,900
2009-07-16$16.74$16.74504,100
2009-07-15$17.06$17.06385,500
2009-07-14$16.18$16.18441,800
2009-07-13$15.97$15.97670,000
2009-07-10$15.26$15.26989,500
2009-07-09$15.02$15.02579,300
2009-07-08$14.83$14.83497,300
2009-07-07$14.80$14.80802,500
2009-07-06$13.67$13.67515,200
2009-07-02$13.37$13.37286,100
2009-07-01$13.85$13.85263,400
2009-06-30$13.14$13.14183,400
2009-06-29$13.51$13.51117,200
2009-06-26$13.49$13.49411,500
2009-06-25$13.30$13.30169,100
2009-06-24$13.07$13.07267,100
2009-06-23$12.79$12.79162,400
2009-06-22$12.98$12.98250,600
2009-06-19$13.44$13.44301,700
2009-06-18$13.43$13.43151,500
2009-06-17$13.72$13.72210,100
2009-06-16$13.83$13.83240,400
2009-06-15$14.14$14.14297,100
2009-06-12$14.05$14.05165,500
2009-06-11$14.10$14.10126,000
2009-06-10$14.19$14.19274,900
2009-06-09$14.42$14.42165,800
2009-06-08$14.10$14.10283,800
2009-06-05$14.31$14.31167,400
2009-06-04$14.42$14.42244,600
2009-06-03$14.05$14.05240,200
2009-06-02$14.17$14.17443,300
2009-06-01$14.37$14.37292,000
2009-05-29$13.48$13.48264,400
2009-05-28$13.36$13.36241,400
2009-05-27$13.56$13.56300,500
2009-05-26$13.61$13.61405,100
2009-05-22$13.05$13.05259,000
2009-05-21$13.54$13.54283,800
2009-05-20$14.05$14.05208,600
2009-05-19$14.23$14.23467,400
2009-05-18$14.50$14.50255,500
2009-05-15$14.01$14.01300,000
2009-05-14$14.16$14.16248,900
2009-05-13$13.92$13.92297,600
2009-05-12$14.41$14.41266,900
2009-05-11$14.56$14.56392,000
2009-05-08$15.14$15.14465,100
2009-05-07$15.17$15.17335,900
2009-05-06$15.77$15.77269,300
2009-05-05$15.55$15.55262,000
2009-05-04$15.80$15.80332,500
2009-05-01$15.17$15.17241,700
2009-04-30$15.65$15.65310,800
2009-04-29$15.73$15.73236,800
2009-04-28$15.15$15.15306,800
2009-04-27$15.54$15.54258,300
2009-04-24$16.12$16.12283,300
2009-04-23$15.96$15.96478,000
2009-04-22$17.07$17.07426,600
2009-04-21$16.06$16.06487,300
2009-04-20$15.92$15.92380,500
2009-04-17$16.14$16.14210,400
2009-04-16$16.13$16.13250,300
2009-04-15$15.28$15.28239,200
2009-04-14$15.20$15.20326,500
2009-04-13$15.66$15.66166,600
2009-04-09$16.09$16.09412,100
2009-04-08$14.77$14.77593,900
2009-04-07$14.13$14.13501,700
2009-04-06$15.06$15.06451,900
2009-04-03$16.06$16.06403,400
2009-04-02$16.48$16.48331,400
2009-04-01$15.31$15.31184,300
2009-03-31$14.67$14.67254,200
2009-03-30$14.70$14.70303,500
2009-03-27$15.53$15.53235,100
2009-03-26$16.12$16.12390,700
2009-03-25$15.39$15.39222,600
2009-03-24$15.17$15.17198,100
2009-03-23$15.79$15.79263,200
2009-03-20$14.34$14.34423,500
2009-03-19$14.77$14.77155,200
2009-03-18$14.73$14.73294,000
2009-03-17$14.16$14.16176,800
2009-03-16$13.51$13.51322,600
2009-03-13$13.81$13.81190,700
2009-03-12$13.63$13.63327,800
2009-03-11$12.67$12.67220,300
2009-03-10$12.19$12.19266,300
2009-03-09$11.45$11.45232,300
2009-03-06$12.14$12.14316,500
2009-03-05$11.90$11.90313,700
2009-03-04$12.35$12.35424,900
2009-03-03$11.63$11.63351,300
2009-03-02$11.89$11.89333,300
2009-02-27$12.59$12.59309,700
2009-02-26$12.79$12.79240,500
2009-02-25$13.15$13.15378,500
2009-02-24$13.53$13.53302,900
2009-02-23$13.06$13.06342,100
2009-02-20$13.90$13.90466,400
2009-02-19$14.14$14.14343,100
2009-02-18$14.62$14.62347,400
2009-02-17$15.39$15.39477,000
2009-02-13$15.89$15.89216,800
2009-02-12$15.68$15.68434,400
2009-02-11$14.82$14.82337,200
2009-02-10$14.66$14.66354,600
2009-02-09$15.28$15.28451,300
2009-02-06$15.98$15.98465,400
2009-02-05$15.38$15.38361,900
2009-02-04$14.97$14.97619,500
2009-02-03$14.16$14.16259,000
2009-02-02$14.19$14.19414,100
2009-01-30$14.05$14.05346,700
2009-01-29$14.19$14.19265,900
2009-01-28$15.00$15.00430,400
2009-01-27$13.86$13.86221,200
2009-01-26$13.43$13.43247,700
2009-01-23$13.23$13.23406,800
2009-01-22$13.10$13.10232,000
2009-01-21$13.64$13.64425,000
2009-01-20$13.06$13.06395,200
2009-01-16$14.04$14.04462,900
2009-01-15$13.44$13.44343,900
2009-01-14$13.23$13.23345,400
2009-01-13$14.22$14.22214,300
2009-01-12$14.36$14.36242,700
2009-01-09$14.65$14.65556,700
2009-01-08$15.44$15.44157,900
2009-01-07$15.11$15.11193,500
2009-01-06$15.60$15.60425,500
2009-01-05$15.14$15.14255,300
2009-01-02$15.24$15.24170,000