Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionChelsea Counsel Co
Latest Disclosed Ownership780 shares
Latest Disclosed Value $ 207,664
Chelsea Counsel Co ownership in ECL / Ecolab Inc.

On June 4, 2026 - Chelsea Counsel Co filed a 13F-HR/A form disclosing ownership of 780 shares of Ecolab Inc. (MX:ECL) valued at $207,664 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 24, 2026 disclosing 780 shares of Ecolab Inc.. This represents a change in shares of 0.00% 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)
2026-06-04 2026-03-31 13F/A-1 ECOLAB COM 278865100 780 0 0.00 208 1.47 0.0915
2026-04-23 2026-03-31 13F ECOLAB COM 278865100 780 0 205 0.0880
2026-02-24 2025-12-31 13F ECOLAB COM 278865100 780 0 0.00 205 -4.23 0.0880
2025-11-25 2025-09-30 13F ECOLAB COM 278865100 780 0 0.00 214 1.43 0.0949
2025-07-18 2025-06-30 13F ECOLAB COM 278865100 780 0 0.00 210 6.60 0.1043
2025-05-22 2025-03-31 13F ECOLAB COM 278865100 780 0 0.00 198 8.24 0.1076
2025-02-27 2024-12-31 13F ECOLAB COM 278865100 780 0 0.00 183 -8.54 0.0944
2024-11-21 2024-09-30 13F ECOLAB COM 278865100 780 0 0.00 199 7.57 0.0982
2024-11-21 2024-06-30 13F ECOLAB COM 278865100 780 0 0.00 186 2.78 0.0927
2024-06-17 2024-03-31 13F ECOLAB COM 278865100 780 0 0.00 180 16.88 0.1022
2024-02-21 2023-12-31 13F ECOLAB COM 278865100 780 -50 -6.02 155 10.00 0.0821
2023-11-22 2023-09-30 13F ECOLAB COM 278865100 830 0 0.00 141 -9.68 0.0724
2023-11-22 2023-06-30 13F ECOLAB COM 278865100 830 -200 -19.42 155 -8.82 0.0764
2023-05-19 2023-03-31 13F ECOLAB COM 278865100 1,030 0 0.00 171 11.84 0.0829
2023-02-23 2022-12-31 13F ECOLAB COM 278865100 1,030 -5,730 -84.76 153 -84.43 0.0763
2022-10-31 2022-09-30 13F ECOLAB COMMON 278865100 6,760 -3,240 -32.40 976 -36.54 0.6018
2022-08-01 2022-06-30 13F ECOLAB COMMON 278865100 10,000 -3,825 -27.67 1,538 -36.99 0.7901
2022-05-24 2022-03-31 13F ECOLAB COMMON 278865100 13,825 -185 -1.32 2,441 -25.72 1.0754
2022-05-23 2021-12-31 13F ECOLAB COMMON 278865100 14,010 -60 -0.43 3,286 11.96 1.4227
2022-02-10 2021-09-30 13F ECOLAB COMMON 278865100 14,070 170 1.22 2,935 2.51 1.3347
2022-02-10 2021-06-30 13F ECOLAB COMMON 278865100 13,900 -190 -1.35 2,863 -5.10 1.3197
2022-02-10 2021-03-31 13F ECOLAB COMMON 278865100 14,090 215 1.55 3,017 0.50 1.4955
2022-03-08 2020-12-31 13F ECOLAB COMMON 278865100 13,875 13,875 592.02 3,002 862.18 1.5450
2022-05-06 2020-09-30 13F ECOLAB COMMON 278865100 0 -2,005 -100.00 0 -100.00
2022-05-06 2020-06-30 13F ECOLAB COMMON 278865100 2,005 0 0.00 399 27.88 0.1528
2020-06-12 2020-03-31 13F ECOLAB COMMON 278865100 2,005 0 0.00 312 -19.38 0.2446
2020-03-23 2019-12-31 13F ECOLAB COMMON 278865100 2,005 0 0.00 387 -2.52 0.2355
2020-03-27 2019-09-30 13F/A-1 ECOLAB COMMON 278865100 2,005 490 32.34 397 32.78 0.2390
2020-03-23 2019-09-30 13F ECOLAB COMMON 278865100 180 -1,335 0
2019-12-09 2019-06-30 13F ECOLAB COMMON 278865100 1,515 15 1.00 299 12.83 0.1600
2019-12-09 2019-03-31 13F ECOLAB COMMON 278865100 1,500 0 0.00 265 19.91 0.1428
2019-12-09 2018-12-31 13F ECOLAB COMMON 278865100 1,500 0 0.00 221 -5.96 0.1341
2019-12-09 2018-09-30 13F ECOLAB COMMON 278865100 1,500 0 0.00 235 11.90 0.1225
2018-10-03 2018-06-30 13F ECOLAB COMMON 278865100 1,500 0 0.00 210 1.94 0.1250
2018-10-03 2018-03-31 13F ECOLAB COMMON 278865100 1,500 0 0.00 206 2.49 0.1325
2018-01-12 2017-12-31 13F ECOLAB COMMON 278865100 1,500 1,500 201 0.1073
2016-04-07 2015-12-31 13F ECOLAB COMMON 278865100 0 -2,000 -100.00 0 -100.00
2015-12-22 2015-09-30 13F ECOLAB COMMON 278865100 2,000 0 0.00 219 -3.10 0.0521
2015-08-31 2015-06-30 13F/A-1 ECOLAB COMMON 278865100 2,500 0 278 0.0532
2015-09-10 2015-06-30 13F/A-2 ECOLAB COMMON 278865100 2,000 -500 -20.00 226 -20.98 0.0506
2015-08-28 2015-06-30 13F ECOLAB COMMON 278865100 2,500 278
2015-05-29 2015-03-31 13F ECOLAB COMMON 278865100 2,500 0 0.00 286 9.58 0.0616
2015-05-29 2014-12-31 13F ECOLAB COMMON 278865100 2,500 0 0.00 261 -9.06 0.0537
2014-12-16 2014-09-30 13F ECOLAB COMMON 278865100 2,500 0 0.00 287 3.24 0.0573
2014-09-04 2014-06-30 13F ECOLAB COMMON 278865100 2,500 0 0.00 278 2.96 0.0543
2014-07-08 2014-03-31 13F ECOLAB COMMON 278865100 2,500 0 0.00 270 3.45 0.0548
2014-03-24 2013-12-31 13F ECOLAB COMMON 278865100 2,500 0 0.00 261 5.67 0.0618
2013-11-14 2013-09-30 13F ECOLAB COMMON 278865100 2,500 0 0.00 247 15.96 0.0512
2013-11-14 2013-06-30 13F ECOLAB COMMON 278865100 2,500 2,500 213 0.0559
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.