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 — 1986

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1986-12-31$2.88$2.89984,000——
1986-12-30$2.86$2.88260,800——
1986-12-29$2.81$2.83306,400——
1986-12-26$2.80$2.82123,200——
1986-12-24$2.78$2.80540,000——
1986-12-23$2.63$2.641,774,400——
1986-12-22$2.75$2.77633,600——
1986-12-19$2.77$2.781,202,400——
1986-12-18$2.81$2.83384,800——
1986-12-17$2.75$2.77521,600——
1986-12-16$2.80$2.80165,600——
1986-12-15$2.78$2.78652,000——
1986-12-12$2.80$2.80296,800——
1986-12-11$2.84$2.84660,000——
1986-12-10$2.81$2.81452,000——
1986-12-09$2.88$2.881,495,200——
1986-12-08$2.88$2.881,963,200——
1986-12-05$2.95$2.95301,600——
1986-12-04$2.95$2.95751,200——
1986-12-03$2.95$2.95780,000——
1986-12-02$2.97$2.97491,200——
1986-12-01$2.92$2.921,481,600——
1986-11-28$2.94$2.94500,000——
1986-11-26$2.88$2.88467,200——
1986-11-25$2.86$2.86628,000——
1986-11-24$2.88$2.88671,200——
1986-11-21$2.92$2.921,187,200——
1986-11-20$2.86$2.86641,600——
1986-11-19$2.86$2.862,364,000——
1986-11-18$2.84$2.841,059,200——
1986-11-17$2.88$2.882,216,000——
1986-11-14$2.84$2.843,147,200——
1986-11-13$2.83$2.832,756,000——
1986-11-12$2.86$2.862,248,000——
1986-11-11$2.88$2.88945,600——
1986-11-10$2.84$2.841,056,800——
1986-11-07$2.92$2.92732,000——
1986-11-06$2.98$2.981,467,200——
1986-11-05$3.03$3.035,150,400——
1986-11-04$2.97$2.97919,200——
1986-11-03$3.00$3.002,928,800——
1986-10-31$2.97$2.97817,600——
1986-10-30$3.00$3.00944,000——
1986-10-29$2.92$2.92224,000——
1986-10-28$2.92$2.92688,800——
1986-10-27$2.89$2.8930,400——
1986-10-24$2.89$2.89276,800——
1986-10-23$2.89$2.891,442,400——
1986-10-22$2.88$2.88160,000——
1986-10-21$2.91$2.91372,000——
1986-10-20$2.97$2.971,052,000——
1986-10-17$3.08$3.08751,200——
1986-10-16$3.17$3.17398,400——
1986-10-15$3.22$3.221,448,000——
1986-10-14$3.16$3.161,368,000——
1986-10-13$3.05$3.05365,600——
1986-10-10$2.97$2.971,976,000——
1986-10-09$2.97$2.97929,600——
1986-10-08$2.83$2.83556,800——
1986-10-07$2.78$2.781,760,000——
1986-10-06$2.69$2.692,412,000——
1986-10-03$2.77$2.771,001,600——
1986-10-02$2.84$2.84820,800——
1986-10-01$2.84$2.841,133,600——
1986-09-30$2.83$2.83483,200——
1986-09-29$2.78$2.78265,600——
1986-09-26$2.84$2.84252,000——
1986-09-25$2.88$2.88832,800——
1986-09-24$3.00$3.00160,000——
1986-09-23$2.97$2.97498,400——
1986-09-22$2.94$2.94682,400——
1986-09-19$2.83$2.83481,600——
1986-09-18$2.83$2.83398,400——
1986-09-17$2.84$2.84803,200——
1986-09-16$2.86$2.861,355,200——
1986-09-15$2.77$2.77841,600——
1986-09-12$2.69$2.691,612,800——
1986-09-11$2.88$2.88499,200——
1986-09-10$3.14$3.14270,400——
1986-09-09$3.14$3.14879,200——
1986-09-08$3.09$3.09271,200——
1986-09-05$3.09$3.092,644,800——
1986-09-04$3.08$3.08587,200——
1986-09-03$3.08$3.08660,000——
1986-09-02$3.09$3.091,602,400——
1986-08-29$3.06$3.06591,200——
1986-08-28$3.06$3.061,014,400——
1986-08-27$3.08$3.08684,000——
1986-08-26$3.08$3.08728,000——
1986-08-25$3.08$3.08789,600——
1986-08-22$3.11$3.11212,000——
1986-08-21$3.16$3.16685,600——
1986-08-20$3.19$3.19255,200——
1986-08-19$3.09$3.09276,800——
1986-08-18$3.23$3.23127,200——
1986-08-15$3.25$3.25153,600——
1986-08-14$3.28$3.28565,600——
1986-08-13$3.30$3.30476,000——
1986-08-12$3.25$3.25588,800——
1986-08-11$3.17$3.17385,600——
1986-08-08$3.09$3.09131,200——
1986-08-07$3.05$3.051,383,200——
1986-08-06$3.06$3.06368,800——
1986-08-05$3.11$3.11614,400——
1986-08-04$3.09$3.091,109,600——
1986-08-01$3.19$3.19413,600——
1986-07-31$3.16$3.1669,600——
1986-07-30$3.17$3.171,041,600——
1986-07-29$3.19$3.191,583,200——
1986-07-28$3.19$3.191,075,200——
1986-07-25$3.22$3.2290,400——
1986-07-24$3.23$3.231,019,200——
1986-07-23$3.28$3.28360,800——
1986-07-22$3.27$3.27412,800——
1986-07-21$3.19$3.19276,000——
1986-07-18$3.13$3.131,306,400——
1986-07-17$3.06$3.061,018,400——
1986-07-16$3.13$3.13958,400——
1986-07-15$3.18$3.181,240,000——
1986-07-14$3.15$3.151,772,800——
1986-07-11$3.33$3.331,262,400——
1986-07-10$3.39$3.39968,000——
1986-07-09$3.38$3.371,352,000——
1986-07-08$3.34$3.341,777,600——
1986-07-07$3.49$3.49420,800——
1986-07-03$3.56$3.56280,000——
1986-07-02$3.55$3.551,478,400——
1986-07-01$3.63$3.62451,200——
1986-06-30$3.65$3.65945,600——
1986-06-27$3.52$3.52956,800——
1986-06-26$3.45$3.45864,000——
1986-06-25$3.45$3.451,198,400——
1986-06-24$3.44$3.44931,200——
1986-06-23$3.43$3.43227,200——
1986-06-20$3.44$3.44600,000——
1986-06-19$3.38$3.373,235,200——
1986-06-18$3.31$3.31217,600——
1986-06-17$3.30$3.301,528,000——
1986-06-16$3.31$3.312,483,200——
1986-06-13$3.31$3.314,542,400——
1986-06-12$3.29$3.29459,200——
1986-06-11$3.29$3.291,502,400——
1986-06-10$3.23$3.23742,400——
1986-06-09$3.27$3.27531,200——
1986-06-06$3.32$3.32371,200——
1986-06-05$3.36$3.36147,200——
1986-06-04$3.36$3.361,052,800——
1986-06-03$3.35$3.351,891,200——
1986-06-02$3.36$3.36704,000——
1986-05-30$3.35$3.352,857,600——
1986-05-29$3.33$3.33345,600——
1986-05-28$3.38$3.372,555,200——
1986-05-27$3.30$3.30633,600——
1986-05-23$3.23$3.23536,000——
1986-05-22$3.18$3.18422,400——
1986-05-21$3.15$3.152,163,200——
1986-05-20$3.13$3.131,892,800——
1986-05-19$3.20$3.20635,200——
1986-05-16$3.16$3.16547,200——
1986-05-15$3.12$3.121,531,200——
1986-05-14$3.08$3.08350,400——
1986-05-13$3.09$3.09129,600——
1986-05-12$3.08$3.08115,200——
1986-05-09$3.09$3.091,129,600——
1986-05-08$3.03$3.03251,200——
1986-05-07$3.04$3.04596,800——
1986-05-06$3.05$3.05124,800——
1986-05-05$3.05$3.05417,600——
1986-05-02$3.05$3.05225,600——
1986-05-01$3.05$3.05132,800——
1986-04-30$3.04$3.04368,000——
1986-04-29$3.06$3.06436,800——
1986-04-28$3.08$3.08235,200——
1986-04-25$3.10$3.10684,800——
1986-04-24$3.03$3.03233,600——
1986-04-23$3.04$3.041,001,600——
1986-04-22$3.04$3.04464,000——
1986-04-21$3.00$3.00308,800——
1986-04-18$2.97$2.97644,800——
1986-04-17$3.02$3.022,302,400——
1986-04-16$3.13$3.131,841,600——
1986-04-15$3.05$3.05603,200——
1986-04-14$3.04$3.042,131,200——
1986-04-11$2.86$2.863,355,200——
1986-04-10$2.79$2.79790,400——
1986-04-09$2.80$2.802,123,200——
1986-04-08$2.79$2.793,681,600——
1986-04-07$2.81$2.811,384,000——
1986-04-04$2.88$2.88584,000——
1986-04-03$2.94$2.94688,000——
1986-04-02$3.00$3.00614,400——
1986-04-01$3.03$3.03886,400——
1986-03-31$3.05$3.05220,800——
1986-03-27$3.05$3.05612,800——
1986-03-26$3.05$3.051,324,800——
1986-03-25$2.99$2.99190,400——
1986-03-24$2.99$2.99265,600——
1986-03-21$2.98$2.98700,800——
1986-03-20$3.00$3.001,259,200——
1986-03-19$3.00$3.00947,200——
1986-03-18$3.06$3.06400,000——
1986-03-17$3.08$3.08617,600——
1986-03-14$3.13$3.131,187,200——
1986-03-13$3.13$3.132,292,800——
1986-03-12$3.01$3.012,281,600——
1986-03-11$2.91$2.912,065,600——
1986-03-10$2.88$2.88256,000——
1986-03-07$2.88$2.88612,800——
1986-03-06$2.89$2.89868,800——
1986-03-05$2.90$2.901,779,200——
1986-03-04$2.88$2.88916,800——
1986-03-03$2.88$2.88137,600——
1986-02-28$2.88$2.88897,600——
1986-02-27$2.86$2.862,532,800——
1986-02-26$2.87$2.87724,800——
1986-02-25$2.87$2.87422,400——
1986-02-24$2.89$2.89734,400——
1986-02-21$2.91$2.914,603,200——
1986-02-20$2.87$2.87920,000——
1986-02-19$2.86$2.862,052,800——
1986-02-18$2.86$2.861,404,800——
1986-02-14$2.82$2.82864,000——
1986-02-13$2.82$2.821,542,400——
1986-02-12$2.78$2.78768,000——
1986-02-11$2.83$2.83587,200——
1986-02-10$2.86$2.86852,800——
1986-02-07$2.88$2.881,372,800——
1986-02-06$2.91$2.91360,000——
1986-02-05$2.87$2.87502,400——
1986-02-04$2.81$2.812,939,200——
1986-02-03$2.78$2.781,403,200——
1986-01-31$2.68$2.681,395,200——
1986-01-30$2.60$2.60508,800——
1986-01-29$2.60$2.60747,200——
1986-01-28$2.62$2.62268,800——
1986-01-27$2.63$2.63670,400——
1986-01-24$2.61$2.61259,200——
1986-01-23$2.60$2.60246,400——
1986-01-22$2.63$2.63278,400——
1986-01-21$2.63$2.63468,800——
1986-01-20$2.64$2.64256,000——
1986-01-17$2.65$2.65308,800——
1986-01-16$2.64$2.64476,800——
1986-01-15$2.61$2.61192,000——
1986-01-14$2.59$2.59424,000——
1986-01-13$2.59$2.59283,200——
1986-01-10$2.60$2.60572,800——
1986-01-09$2.57$2.571,078,400——
1986-01-08$2.66$2.66499,200——
1986-01-07$2.64$2.64278,400——
1986-01-06$2.64$2.64259,200——
1986-01-03$2.64$2.64344,000——
1986-01-02$2.61$2.611,116,800——