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 — 1999

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1999-12-31$19.56$25.58175,800
1999-12-30$19.44$25.42658,400
1999-12-29$19.34$25.29723,400
1999-12-28$18.75$24.44530,000
1999-12-27$18.31$23.871,312,600
1999-12-23$18.09$23.58899,400
1999-12-22$17.94$23.381,054,200
1999-12-21$17.94$23.381,351,800
1999-12-20$17.97$23.421,734,400
1999-12-17$18.19$23.711,159,600
1999-12-16$17.81$23.221,197,200
1999-12-15$17.41$22.69755,000
1999-12-14$16.97$22.12831,200
1999-12-13$16.91$22.04562,600
1999-12-10$16.84$21.95456,400
1999-12-09$16.88$21.99469,000
1999-12-08$16.97$22.12520,600
1999-12-07$17.06$22.24668,400
1999-12-06$17.31$22.56623,200
1999-12-03$17.63$22.97970,600
1999-12-02$17.38$22.65405,000
1999-12-01$17.28$22.52798,000
1999-11-30$17.31$22.56697,400
1999-11-29$16.78$21.87699,000
1999-11-26$17.38$22.6597,200
1999-11-24$17.47$22.77401,400
1999-11-23$17.38$22.65791,000
1999-11-22$18.00$23.46626,400
1999-11-19$18.25$23.79451,600
1999-11-18$18.44$24.03517,000
1999-11-17$18.81$24.52853,200
1999-11-16$18.47$24.07813,200
1999-11-15$18.09$23.58608,800
1999-11-12$17.44$22.731,075,000
1999-11-11$17.63$22.97556,000
1999-11-10$17.50$22.81446,200
1999-11-09$16.94$22.08816,000
1999-11-08$17.28$22.52352,400
1999-11-05$16.97$22.12610,600
1999-11-04$17.00$22.16582,200
1999-11-03$17.00$22.16672,200
1999-11-02$17.09$22.28411,000
1999-11-01$17.13$22.32561,400
1999-10-29$16.91$22.041,346,800
1999-10-28$16.84$21.951,087,000
1999-10-27$16.75$21.83712,000
1999-10-26$16.72$21.791,692,400
1999-10-25$17.38$22.65666,600
1999-10-22$17.00$22.16401,200
1999-10-21$16.75$21.831,323,400
1999-10-20$16.94$22.08864,800
1999-10-19$17.31$22.56830,000
1999-10-18$17.09$22.28256,400
1999-10-15$17.00$22.16456,600
1999-10-14$17.13$22.32521,000
1999-10-13$17.25$22.48285,800
1999-10-12$17.56$22.89350,600
1999-10-11$17.50$22.81308,400
1999-10-08$17.84$23.26301,000
1999-10-07$17.59$22.93271,200
1999-10-06$17.63$22.971,027,000
1999-10-05$16.94$22.08564,400
1999-10-04$16.81$21.91696,400
1999-10-01$16.66$21.71648,400
1999-09-30$17.06$22.24825,000
1999-09-29$16.31$21.26508,000
1999-09-28$16.06$20.94502,000
1999-09-27$16.47$21.47574,000
1999-09-24$16.28$21.22733,400
1999-09-23$16.41$21.38539,000
1999-09-22$16.78$21.87510,000
1999-09-21$17.00$22.16628,000
1999-09-20$17.28$22.52553,400
1999-09-17$17.47$22.77597,000
1999-09-16$17.34$22.54714,600
1999-09-15$17.81$23.15838,800
1999-09-14$17.78$23.11629,400
1999-09-13$18.00$23.39860,200
1999-09-10$18.13$23.55643,000
1999-09-09$18.25$23.71667,400
1999-09-08$18.56$24.12482,000
1999-09-07$18.63$24.20296,200
1999-09-03$19.06$24.77292,600
1999-09-02$18.69$24.28427,600
1999-09-01$18.81$24.45397,800
1999-08-31$18.78$24.40467,800
1999-08-30$18.63$24.20342,000
1999-08-27$19.00$24.69458,600
1999-08-26$19.22$24.97413,000
1999-08-25$19.41$25.22667,800
1999-08-24$19.38$25.18750,400
1999-08-23$19.50$25.34598,200
1999-08-20$19.59$25.46626,200
1999-08-19$19.75$25.66359,000
1999-08-18$19.75$25.66388,200
1999-08-17$19.88$25.83490,600
1999-08-16$20.00$25.99302,000
1999-08-13$20.00$25.99883,600
1999-08-12$19.88$25.83624,400
1999-08-11$20.59$26.76292,000
1999-08-10$20.50$26.64567,600
1999-08-09$21.03$27.33326,000
1999-08-06$20.88$27.13339,800
1999-08-05$20.91$27.17544,200
1999-08-04$21.16$27.49590,000
1999-08-03$21.28$27.65731,000
1999-08-02$21.22$27.57397,400
1999-07-30$21.31$27.69333,800
1999-07-29$21.22$27.57420,000
1999-07-28$21.38$27.78528,200
1999-07-27$21.66$28.14934,000
1999-07-26$21.19$27.53732,800
1999-07-23$21.09$27.41327,800
1999-07-22$21.00$27.29712,200
1999-07-21$21.13$27.45860,400
1999-07-20$20.97$27.25724,200
1999-07-19$20.81$27.041,805,600
1999-07-16$21.00$27.297,066,400
1999-07-15$20.81$27.041,452,800
1999-07-14$20.94$27.21221,200
1999-07-13$21.16$27.49341,600
1999-07-12$20.97$27.25674,000
1999-07-09$21.34$27.73598,000
1999-07-08$21.75$28.26305,600
1999-07-07$21.88$28.43560,600
1999-07-06$21.69$28.18301,200
1999-07-02$21.63$28.10301,000
1999-07-01$21.56$28.02342,200
1999-06-30$21.81$28.34357,400
1999-06-29$21.44$27.86524,400
1999-06-28$21.31$27.69387,600
1999-06-25$21.72$28.22294,400
1999-06-24$21.63$28.10289,400
1999-06-23$21.84$28.38247,000
1999-06-22$21.75$28.26282,200
1999-06-21$21.75$28.26357,200
1999-06-18$21.94$28.51443,400
1999-06-17$21.91$28.47464,400
1999-06-16$21.84$28.38227,400
1999-06-15$21.78$28.30403,400
1999-06-14$22.00$28.59458,600
1999-06-11$21.81$28.34335,600
1999-06-10$21.91$28.40580,600
1999-06-09$22.09$28.64438,200
1999-06-08$21.84$28.32308,600
1999-06-07$21.78$28.24666,000
1999-06-04$21.94$28.44540,600
1999-06-03$21.97$28.481,050,400
1999-06-02$21.88$28.36627,800
1999-06-01$21.44$27.79380,000
1999-05-28$21.25$27.55329,200
1999-05-27$21.03$27.26608,800
1999-05-26$21.06$27.30490,600
1999-05-25$21.06$27.30481,000
1999-05-24$21.09$27.34386,600
1999-05-21$21.38$27.71589,600
1999-05-20$20.91$27.10406,200
1999-05-19$20.94$27.14225,000
1999-05-18$20.63$26.74303,000
1999-05-17$20.78$26.94415,400
1999-05-14$20.75$26.90397,200
1999-05-13$21.19$27.47274,200
1999-05-12$20.72$26.86422,800
1999-05-11$20.94$27.14287,400
1999-05-10$20.97$27.18533,800
1999-05-07$21.00$27.22827,000
1999-05-06$20.94$27.14454,200
1999-05-05$21.06$27.30571,800
1999-05-04$20.81$26.98354,200
1999-05-03$21.22$27.51782,600
1999-04-30$20.97$27.18672,400
1999-04-29$21.22$27.51332,400
1999-04-28$20.75$26.90371,200
1999-04-27$20.69$26.82740,400
1999-04-26$19.97$25.89422,000
1999-04-23$19.94$25.85537,000
1999-04-22$20.13$26.09464,800
1999-04-21$20.34$26.37305,200
1999-04-20$20.53$26.62863,600
1999-04-19$21.25$27.551,926,600
1999-04-16$20.03$25.97640,800
1999-04-15$20.00$25.931,153,400
1999-04-14$19.31$25.04537,200
1999-04-13$18.63$24.14478,000
1999-04-12$18.59$24.10612,200
1999-04-09$18.50$23.98328,800
1999-04-08$18.81$24.39335,600
1999-04-07$18.38$23.82638,400
1999-04-06$18.03$23.37971,800
1999-04-05$18.09$23.46581,800
1999-04-01$17.84$23.131,082,800
1999-03-31$17.75$23.01697,400
1999-03-30$17.84$23.13576,200
1999-03-29$18.53$24.02545,000
1999-03-26$18.50$23.98493,800
1999-03-25$18.66$24.18378,200
1999-03-24$18.72$24.27643,200
1999-03-23$18.44$23.90681,200
1999-03-22$19.34$25.08301,000
1999-03-19$19.56$25.36541,600
1999-03-18$19.53$25.32287,800
1999-03-17$19.44$25.20474,800
1999-03-16$19.91$25.80157,400
1999-03-15$20.09$26.05560,200
1999-03-12$19.97$25.89471,200
1999-03-11$20.31$26.26539,600
1999-03-10$20.56$26.59573,400
1999-03-09$19.97$25.82390,000
1999-03-08$19.91$25.74373,400
1999-03-05$20.16$26.06347,200
1999-03-04$19.78$25.58687,200
1999-03-03$19.38$25.051,104,400
1999-03-02$19.59$25.33355,400
1999-03-01$19.84$25.66433,800
1999-02-26$19.94$25.78230,800
1999-02-25$19.94$25.78957,000
1999-02-24$19.94$25.78656,000
1999-02-23$19.97$25.821,142,400
1999-02-22$20.28$26.221,041,600
1999-02-19$19.91$25.74564,200
1999-02-18$19.50$25.21519,800
1999-02-17$19.34$25.01429,200
1999-02-16$19.41$25.09620,200
1999-02-12$19.03$24.61352,800
1999-02-11$19.25$24.89428,800
1999-02-10$19.09$24.69481,600
1999-02-09$19.25$24.89378,000
1999-02-08$19.19$24.81345,600
1999-02-05$19.34$25.01540,000
1999-02-04$19.09$24.69295,400
1999-02-03$19.13$24.73351,200
1999-02-02$19.34$25.01426,000
1999-02-01$19.69$25.46572,800
1999-01-29$19.38$25.05761,400
1999-01-28$18.50$23.92411,000
1999-01-27$18.34$23.72342,000
1999-01-26$18.47$23.88588,600
1999-01-25$18.19$23.52447,400
1999-01-22$17.97$23.23455,800
1999-01-21$17.78$22.99285,400
1999-01-20$17.66$22.83465,200
1999-01-19$17.97$23.23308,000
1999-01-15$18.09$23.39616,800
1999-01-14$17.88$23.11369,400
1999-01-13$18.00$23.27346,600
1999-01-12$18.22$23.56331,400
1999-01-11$18.03$23.31388,200
1999-01-08$18.50$23.92327,600
1999-01-07$18.66$24.12363,000
1999-01-06$18.59$24.04377,200
1999-01-05$18.13$23.44355,600
1999-01-04$17.94$23.19770,000