NYSE:ECL | Historical Stock Price | ECOLAB 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
1973-02-21 to 2026-09-04
Data captured

Stock Price Chart

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

$0.96$3.44$12.34$44.32$159.12$571.331973-02-212026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 1991

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1991-12-31$3.72$4.24351,200
1991-12-30$3.52$4.01487,200
1991-12-27$3.47$3.95224,000
1991-12-26$3.56$4.06492,800
1991-12-24$3.45$3.94285,600
1991-12-23$3.41$3.88260,000
1991-12-20$3.41$3.88817,600
1991-12-19$3.50$3.96426,400
1991-12-18$3.61$4.09359,200
1991-12-17$3.63$4.11396,800
1991-12-16$3.64$4.12442,400
1991-12-13$3.59$4.07360,800
1991-12-12$3.59$4.07489,600
1991-12-11$3.56$4.04367,200
1991-12-10$3.58$4.05507,200
1991-12-09$3.72$4.21157,600
1991-12-06$3.73$4.23192,800
1991-12-05$3.75$4.25216,800
1991-12-04$3.77$4.27272,000
1991-12-03$3.78$4.28430,400
1991-12-02$3.80$4.30267,200
1991-11-29$3.80$4.30253,600
1991-11-27$3.84$4.35233,600
1991-11-26$3.83$4.34512,000
1991-11-25$3.80$4.30733,600
1991-11-22$3.67$4.16324,800
1991-11-21$3.61$4.09656,800
1991-11-20$3.55$4.02777,600
1991-11-19$3.66$4.14437,600
1991-11-18$3.72$4.21311,200
1991-11-15$3.73$4.23243,200
1991-11-14$3.77$4.2738,400
1991-11-13$3.80$4.30168,800
1991-11-12$3.72$4.21236,800
1991-11-11$3.73$4.23682,400
1991-11-08$3.81$4.3258,400
1991-11-07$3.77$4.27117,600
1991-11-06$3.75$4.25212,800
1991-11-05$3.83$4.34181,600
1991-11-04$3.94$4.46398,400
1991-11-01$3.97$4.50413,600
1991-10-31$3.92$4.44636,800
1991-10-30$3.95$4.48481,600
1991-10-29$3.88$4.39360,000
1991-10-28$3.92$4.44152,800
1991-10-25$3.80$4.30240,000
1991-10-24$3.78$4.28268,000
1991-10-23$3.83$4.34230,400
1991-10-22$3.83$4.34315,200
1991-10-21$3.97$4.50353,600
1991-10-18$4.02$4.55708,000
1991-10-17$4.08$4.62287,200
1991-10-16$4.02$4.55674,400
1991-10-15$3.97$4.50203,200
1991-10-14$3.89$4.41199,200
1991-10-11$3.92$4.44472,800
1991-10-10$3.91$4.42344,800
1991-10-09$3.88$4.39424,000
1991-10-08$3.91$4.42417,600
1991-10-07$3.89$4.41354,400
1991-10-04$3.95$4.48387,200
1991-10-03$3.94$4.46452,800
1991-10-02$3.97$4.50942,400
1991-10-01$4.14$4.69738,400
1991-09-30$4.16$4.71369,600
1991-09-27$4.16$4.71318,400
1991-09-26$4.19$4.74513,600
1991-09-25$4.03$4.57453,600
1991-09-24$4.03$4.57425,600
1991-09-23$4.00$4.53493,600
1991-09-20$4.00$4.53644,000
1991-09-19$3.91$4.42800,800
1991-09-18$3.83$4.34176,800
1991-09-17$3.80$4.3094,400
1991-09-16$3.84$4.35292,800
1991-09-13$3.88$4.39682,400
1991-09-12$3.83$4.34118,400
1991-09-11$3.81$4.3261,600
1991-09-10$3.86$4.35370,400
1991-09-09$3.92$4.42140,800
1991-09-06$3.91$4.40372,000
1991-09-05$3.92$4.42388,800
1991-09-04$3.86$4.35187,200
1991-09-03$3.86$4.35244,000
1991-08-30$3.81$4.29176,800
1991-08-29$3.78$4.26116,800
1991-08-28$3.80$4.28123,200
1991-08-27$3.78$4.26231,200
1991-08-26$3.80$4.28316,800
1991-08-23$3.81$4.29326,400
1991-08-22$3.69$4.15276,800
1991-08-21$3.56$4.01152,000
1991-08-20$3.55$3.99229,600
1991-08-19$3.50$3.94248,800
1991-08-16$3.58$4.03174,400
1991-08-15$3.59$4.0564,800
1991-08-14$3.58$4.03247,200
1991-08-13$3.56$4.01117,600
1991-08-12$3.58$4.03140,000
1991-08-09$3.53$3.98772,000
1991-08-08$3.59$4.05116,000
1991-08-07$3.67$4.14154,400
1991-08-06$3.69$4.15318,400
1991-08-05$3.63$4.08412,000
1991-08-02$3.59$4.05173,600
1991-08-01$3.56$4.01309,600
1991-07-31$3.61$4.07798,400
1991-07-30$3.48$3.92237,600
1991-07-29$3.45$3.89101,600
1991-07-26$3.45$3.8995,200
1991-07-25$3.45$3.8929,600
1991-07-24$3.45$3.89229,600
1991-07-23$3.48$3.92358,400
1991-07-22$3.52$3.96133,600
1991-07-19$3.50$3.94500,800
1991-07-18$3.53$3.98700,000
1991-07-17$3.47$3.91356,800
1991-07-16$3.38$3.805,613,600
1991-07-15$3.41$3.84219,200
1991-07-12$3.41$3.84779,200
1991-07-11$3.36$3.78185,600
1991-07-10$3.39$3.82324,000
1991-07-09$3.41$3.84359,200
1991-07-08$3.45$3.89254,400
1991-07-05$3.45$3.8959,200
1991-07-03$3.41$3.84465,600
1991-07-02$3.48$3.92430,400
1991-07-01$3.50$3.94384,800
1991-06-28$3.45$3.89381,600
1991-06-27$3.41$3.84182,400
1991-06-26$3.31$3.73142,400
1991-06-25$3.34$3.7792,000
1991-06-24$3.33$3.75291,200
1991-06-21$3.34$3.77340,800
1991-06-20$3.27$3.68372,000
1991-06-19$3.28$3.70152,800
1991-06-18$3.33$3.75299,200
1991-06-17$3.33$3.75188,800
1991-06-14$3.34$3.77178,400
1991-06-13$3.31$3.73322,400
1991-06-12$3.28$3.7092,800
1991-06-11$3.34$3.74185,600
1991-06-10$3.30$3.69160,800
1991-06-07$3.28$3.67176,800
1991-06-06$3.27$3.65169,600
1991-06-05$3.27$3.65278,400
1991-06-04$3.25$3.64663,200
1991-06-03$3.27$3.65648,800
1991-05-31$3.27$3.65165,600
1991-05-30$3.22$3.60229,600
1991-05-29$3.27$3.65119,200
1991-05-28$3.28$3.67370,400
1991-05-24$3.31$3.7176,800
1991-05-23$3.27$3.65153,600
1991-05-22$3.34$3.74363,200
1991-05-21$3.38$3.78210,400
1991-05-20$3.34$3.74152,800
1991-05-17$3.38$3.78449,600
1991-05-16$3.34$3.74183,200
1991-05-15$3.38$3.78411,200
1991-05-14$3.39$3.79213,600
1991-05-13$3.41$3.81161,600
1991-05-10$3.36$3.76368,000
1991-05-09$3.39$3.79311,200
1991-05-08$3.36$3.76912,800
1991-05-07$3.31$3.71624,800
1991-05-06$3.31$3.71665,600
1991-05-03$3.31$3.711,367,200
1991-05-02$3.30$3.69220,800
1991-05-01$3.36$3.76466,400
1991-04-30$3.41$3.81275,200
1991-04-29$3.36$3.76522,400
1991-04-26$3.34$3.74247,200
1991-04-25$3.34$3.74316,000
1991-04-24$3.41$3.81115,200
1991-04-23$3.34$3.74456,800
1991-04-22$3.30$3.69164,800
1991-04-19$3.28$3.67536,000
1991-04-18$3.36$3.76306,400
1991-04-17$3.39$3.79197,600
1991-04-16$3.44$3.85677,600
1991-04-15$3.56$3.99311,200
1991-04-12$3.45$3.86192,800
1991-04-11$3.38$3.78356,800
1991-04-10$3.33$3.72120,800
1991-04-09$3.34$3.74120,800
1991-04-08$3.38$3.78756,000
1991-04-05$3.38$3.78696,000
1991-04-04$3.36$3.76505,600
1991-04-03$3.41$3.81237,600
1991-04-02$3.41$3.81116,000
1991-04-01$3.36$3.76221,600
1991-03-28$3.41$3.81192,000
1991-03-27$3.38$3.7882,400
1991-03-26$3.36$3.76297,600
1991-03-25$3.34$3.74428,800
1991-03-22$3.33$3.721,032,000
1991-03-21$3.59$4.021,072,800
1991-03-20$3.66$4.09884,800
1991-03-19$3.50$3.92689,600
1991-03-18$3.36$3.76469,600
1991-03-15$3.34$3.741,338,400
1991-03-14$3.25$3.641,464,800
1991-03-13$3.22$3.60540,800
1991-03-12$3.25$3.61355,200
1991-03-11$3.31$3.68887,200
1991-03-08$3.33$3.70204,000
1991-03-07$3.31$3.68880,800
1991-03-06$3.38$3.753,235,200
1991-03-05$3.19$3.54443,200
1991-03-04$3.09$3.44294,400
1991-03-01$3.13$3.47231,200
1991-02-28$3.09$3.44576,800
1991-02-27$3.20$3.56640,000
1991-02-26$3.20$3.56569,600
1991-02-25$3.23$3.59778,400
1991-02-22$3.28$3.65187,200
1991-02-21$3.34$3.721,402,400
1991-02-20$3.41$3.792,364,000
1991-02-19$3.47$3.861,258,400
1991-02-15$3.39$3.77548,000
1991-02-14$3.30$3.661,023,200
1991-02-13$3.27$3.63194,400
1991-02-12$3.25$3.611,112,000
1991-02-11$3.14$3.49960,000
1991-02-08$3.03$3.37252,800
1991-02-07$3.05$3.39312,000
1991-02-06$3.13$3.47188,800
1991-02-05$2.98$3.32504,800
1991-02-04$3.13$3.47336,000
1991-02-01$3.00$3.33169,600
1991-01-31$2.89$3.21258,400
1991-01-30$2.86$3.18243,200
1991-01-29$2.88$3.20165,600
1991-01-28$2.88$3.20209,600
1991-01-25$2.88$3.20308,000
1991-01-24$2.91$3.23452,800
1991-01-23$2.84$3.16109,600
1991-01-22$2.86$3.18324,800
1991-01-21$2.83$3.14258,400
1991-01-18$2.80$3.11698,400
1991-01-17$2.67$2.97286,400
1991-01-16$2.59$2.88348,800
1991-01-15$2.56$2.85356,000
1991-01-14$2.59$2.88195,200
1991-01-11$2.56$2.85156,000
1991-01-10$2.58$2.87445,600
1991-01-09$2.56$2.85200,800
1991-01-08$2.56$2.85304,000
1991-01-07$2.52$2.80584,000
1991-01-04$2.63$2.92122,400
1991-01-03$2.66$2.95263,200
1991-01-02$2.67$2.97369,600