Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionWendell David Associates Inc
Latest Disclosed Ownership72,244 shares
Latest Disclosed Value $ 19,218
Wendell David Associates Inc reports 2.57% increase in ownership of ECL / Ecolab Inc.

On April 23, 2026 - Wendell David Associates Inc filed a 13F-HR form disclosing ownership of 72,244 shares of Ecolab Inc. (MX:ECL) valued at $19,218 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 70,434 shares of Ecolab Inc.. This represents a change in shares of 2.57% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-23 2026-03-31 13F Ecolab COMM 278865100 72,244 1,810 2.57 19 5.56 2.0914
2026-01-30 2025-12-31 13F Ecolab COMM 278865100 70,434 -844 -1.18 18 -5.26 1.8785
2025-10-30 2025-09-30 13F Ecolab COMM 278865100 71,278 390 0.55 20 0.00 1.9269
2025-07-29 2025-06-30 13F Ecolab COMM 278865100 70,888 -2,000 -2.74 19 5.56 1.9209
2025-04-18 2025-03-31 13F Ecolab COMM 278865100 72,888 -850 -1.15 18 5.88 1.8438
2025-01-17 2024-12-31 13F Ecolab COMM 278865100 73,738 -1,870 -2.47 17 -10.53 1.7083
2024-10-21 2024-09-30 13F Ecolab COMM 278865100 75,608 1,167 1.57 19 11.76 1.8463
2024-07-22 2024-06-30 13F Ecolab COMM 278865100 74,441 1,787 2.46 18 6.25 1.8053
2024-04-22 2024-03-31 13F Ecolab COMM 278865100 72,654 2,165 3.07 17 23.08 1.6952
2024-01-22 2023-12-31 13F Ecolab COMM 278865100 70,489 540 0.77 14 18.18 1.5060
2023-10-20 2023-09-30 13F Ecolab COMM 278865100 69,949 -925 -1.31 12 -15.38 1.3941
2023-07-20 2023-06-30 13F Ecolab COMM 278865100 70,874 -740 -1.03 13 18.18 1.4945
2023-04-19 2023-03-31 13F Ecolab COMM 278865100 71,614 -2,585 -3.48 12 10.00 1.4055
2023-01-17 2022-12-31 13F Ecolab COMM 278865100 74,199 -4,945 -6.25 11 -99.91 1.3273
2022-10-18 2022-09-30 13F Ecolab COMM 278865100 79,144 -9,860 -11.08 11,430 -16.48 1.5378
2022-07-14 2022-06-30 13F Ecolab COMM 278865100 89,004 -10,653 -10.69 13,685 -22.22 1.7401
2022-04-22 2022-03-31 13F Ecolab COMM 278865100 99,657 -14,903 -13.01 17,595 -34.53 1.9591
2022-01-24 2021-12-31 13F Ecolab COMM 278865100 114,560 -4,266 -3.59 26,875 8.42 2.7188
2021-10-19 2021-09-30 13F Ecolab COMM 278865100 118,826 70 0.06 24,789 1.35 2.7636
2021-07-19 2021-06-30 13F Ecolab COMM 278865100 118,756 -1,125 -0.94 24,460 -4.69 2.7379
2021-04-20 2021-03-31 13F Ecolab COMM 278865100 119,881 -868 -0.72 25,663 -1.77 3.0884
2021-01-22 2020-12-31 13F Ecolab COMM 278865100 120,749 511 0.42 26,125 8.73 3.1943
2020-10-20 2020-09-30 13F Ecolab COMM 278865100 120,238 -1,300 -1.07 24,028 -0.63 3.2026
2020-07-17 2020-06-30 13F Ecolab COMM 278865100 121,538 -1,850 -1.50 24,180 25.75 3.5046
2020-04-16 2020-03-31 13F Ecolab COMM 278865100 123,388 -1,618 -1.29 19,228 -20.30 3.2526
2020-01-17 2019-12-31 13F Ecolab COMM 278865100 125,006 30 0.02 24,125 -2.53 3.3227
2019-10-22 2019-09-30 13F Ecolab COMM 278865100 124,976 -1,395 -1.10 24,750 -0.81 3.6243
2019-07-16 2019-06-30 13F Ecolab COMM 278865100 126,371 -1,500 -1.17 24,951 10.53 3.7436
2019-04-11 2019-03-31 13F Ecolab COMM 278865100 127,871 -432 -0.34 22,574 19.41 3.5141
2019-01-17 2018-12-31 13F Ecolab COMM 278865100 128,303 -1,382 -1.07 18,905 -7.02 3.4030
2018-10-12 2018-09-30 13F Ecolab COMM 278865100 129,685 -313 -0.24 20,332 11.45 3.1664
2018-07-16 2018-06-30 13F Ecolab COMM 278865100 129,998 785 0.61 18,243 3.00 3.1136
2018-04-11 2018-03-31 13F Ecolab COMM 278865100 129,213 -8,395 -6.10 17,711 -4.08 3.1900
2018-01-16 2017-12-31 13F Ecolab COMM 278865100 137,608 -2,860 -2.04 18,464 2.20 3.1632
2017-10-17 2017-09-30 13F Ecolab COMM 278865100 140,468 740 0.53 18,066 -2.60 3.1923
2017-07-18 2017-06-30 13F Ecolab COMM 278865100 139,728 -1,490 -1.06 18,549 4.80 3.4949
2017-04-20 2017-03-31 13F Ecolab COMM 278865100 141,218 -3,775 -2.60 17,700 4.14 3.3840
2017-01-23 2016-12-31 13F Ecolab COMM 278865100 144,993 -475 -0.33 16,996 -4.01 3.3553
2016-10-18 2016-09-30 13F/A-1 Ecolab COMM 278865100 145,468 -880 -0.60 17,706 1.67 3.4926
2016-10-18 2016-09-30 13F Ecolab COMM 278865100 146,348 17,415
2016-07-18 2016-06-30 13F Ecolab COMM 278865100 146,348 -5,192 -3.43 17,415 2.60 3.4182
2016-04-19 2016-03-31 13F Ecolab COMM 278865100 151,540 -4,120 -2.65 16,973 -4.35 3.2957
2016-01-19 2015-12-31 13F/A-1 Ecolab COMM 278865100 155,660 1,030 0.67 17,745 4.33 3.5007
2016-01-19 2015-12-31 13F Ecolab COMM 278865100 155,660 17,745
2015-10-16 2015-09-30 13F Ecolab COMM 278865100 154,630 880 0.57 17,009 -2.10 3.4912
2015-07-20 2015-06-30 13F Ecolab COMM 278865100 153,750 1,165 0.76 17,374 -0.12 3.3705
2015-04-20 2015-03-31 13F Ecolab COMM 278865100 152,585 2,660 1.77 17,395 10.50 3.3448
2015-01-22 2014-12-31 13F Ecolab COMM 278865100 149,925 2,150 1.45 15,742 -7.37 3.0719
2014-10-21 2014-09-30 13F Ecolab COMM 278865100 147,775 1,170 0.80 16,994 4.43 3.5422
2014-07-30 2014-06-30 13F/A-1 Ecolab COMM 278865100 146,605 1,249 0.86 16,273 3.66 3.4247
2014-07-24 2014-06-30 13F Ecolab COMM 278865100 145,356 15,698
2014-04-17 2014-03-31 13F Ecolab COMM 278865100 145,356 -650 -0.45 15,698 3.38 3.4128
2014-01-21 2013-12-31 13F Ecolab COMM 278865100 146,006 -974 -0.66 15,185 4.36 3.3313
2013-10-22 2013-09-30 13F/A-1 Ecolab COMM 278865100 146,980 2,330 1.61 14,551 18.35 3.4890
2013-10-21 2013-09-30 13F Ecolab COMM 278865100 14,551 14,551
2013-07-19 2013-06-30 13F Ecolab COMM 278865100 144,650 144,650 12,295 3.0708
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.