Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionImpax Asset Management Group plc
Latest Disclosed Ownership859,293 shares
Latest Disclosed Value $ 228,589,124
Impax Asset Management Group plc reports 18.45% increase in ownership of ECL / Ecolab Inc.

On May 12, 2026 - Impax Asset Management Group plc filed a 13F-HR form disclosing ownership of 859,293 shares of Ecolab Inc. (MX:ECL) valued at $228,589,124 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 725,432 shares of Ecolab Inc.. This represents a change in shares of 18.45% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-12 2026-03-31 13F Ecolab Common Stock 278865100 859,293 133,861 18.45 228,589 20.03 1.5934
2026-01-29 2025-12-31 13F Ecolab Common Stock 278865100 725,432 105,092 16.94 190,440 12.10 1.1914
2025-11-06 2025-09-30 13F Ecolab Common Stock 278865100 620,340 -32,834 -5.03 169,886 -3.47 0.9914
2025-08-08 2025-06-30 13F Ecolab Common Stock 278865100 653,174 27,790 4.44 175,991 11.00 1.0118
2025-04-29 2025-03-31 13F Ecolab Common Stock 278865100 625,384 -27,993 -4.28 158,547 3.56 0.9548
2025-02-04 2024-12-31 13F Ecolab Common Stock 278865100 653,377 -9,646 -1.45 153,099 -9.56 0.6933
2024-11-06 2024-09-30 13F/A-1 Ecolab Common Stock 278865100 663,023 -97,864 -12.86 169,290 -6.52 0.6665
2024-10-30 2024-09-30 13F Ecolab Common Stock 278865100 663,023 -97,864 169,290 0.6673
2024-11-08 2024-06-30 13F/A-1 Ecolab Common Stock 278865100 760,887 -109,553 -12.59 181,091 -9.90 0.7372
2024-08-05 2024-06-30 13F Ecolab Common Stock 278865100 760,887 -109,553 181,091 0.7379
2024-04-30 2024-03-31 13F Ecolab Common Stock 278865100 870,440 -134,861 -13.41 200,985 0.79 0.7693
2024-01-26 2023-12-31 13F Ecolab Common Stock 278865100 1,005,301 -92,203 -8.40 199,401 7.25 0.8005
2023-11-07 2023-09-30 13F/A-1 Ecolab Common Stock 278865100 1,097,504 -32,535 -2.88 185,917 -11.87 0.8306
2023-11-07 2023-09-30 13F Ecolab Common Stock 278865100 1,097,504 185,917
2023-08-07 2023-06-30 13F Ecolab Common Stock 278865100 1,130,039 -6,514 -0.57 210,967 12.14 0.8479
2023-05-10 2023-03-31 13F Ecolab Common Stock 278865100 1,136,553 25,295 2.28 188,134 16.31 0.7860
2023-02-09 2022-12-31 13F Ecolab Common Stock 278865100 1,111,258 26,347 2.43 161,755 3.24 0.7237
2022-11-08 2022-09-30 13F Ecolab Common Stock 278865100 1,084,911 11,505 1.07 156,683 -5.07 0.8053
2022-08-11 2022-06-30 13F/A-2 Ecolab Common Stock 278865100 1,073,406 -672,894 -38.53 165,047 -46.47 0.8045
2022-08-02 2022-06-30 13F Ecolab Common Stock 278865100 1,746,300 0 308,327 1.2744
2022-05-16 2022-03-31 13F Ecolab Common Stock 278865100 1,746,300 -1,697,728 -49.29 308,327 -61.84 1.2744
2022-02-14 2021-12-31 13F Ecolab Common Stock 278865100 3,444,028 47,403 1.40 807,934 14.02 2.9543
2021-11-12 2021-09-30 13F Ecolab Common Stock 278865100 3,396,625 200,327 6.27 708,604 7.63 2.9104
2021-08-05 2021-06-30 13F Ecolab Common Stock 278865100 3,196,298 617,083 23.93 658,341 19.24 2.9032
2021-05-14 2021-03-31 13F Ecolab Common Stock 278865100 2,579,215 430,466 20.03 552,133 18.76 2.8250
2021-02-16 2020-12-31 13F Ecolab Common Stock 278865100 2,148,749 466,147 27.70 464,903 38.26 2.9583
2020-11-12 2020-09-30 13F Ecolab Common Stock 278865100 1,682,602 196,631 13.23 336,251 13.74 2.9419
2020-08-14 2020-06-30 13F Ecolab Common Stock 278865100 1,485,971 178,678 13.67 295,634 45.12 3.0337
2020-05-15 2020-03-31 13F Ecolab Common Stock 278865100 1,307,293 149,185 12.88 203,715 -8.85 2.7107
2020-02-13 2019-12-31 13F Ecolab Common Stock 278865100 1,158,108 158,527 15.86 223,503 12.90 2.4933
2019-11-14 2019-09-30 13F Ecolab Common Stock 278865100 999,581 -58,236 -5.51 197,957 -5.22 2.5784
2019-08-13 2019-06-30 13F Ecolab Common Stock 278865100 1,057,817 -424,449 -28.64 208,855 -20.19 2.7132
2019-05-13 2019-03-31 13F Ecolab Common Stock 278865100 1,482,266 -26,283 -1.74 261,679 17.72 3.6018
2019-02-14 2018-12-31 13F Ecolab Common Stock 278865100 1,508,549 59,119 4.08 222,285 -2.18 3.6228
2018-11-14 2018-09-30 13F Ecolab Common Stock 278865100 1,449,430 1,449,430 227,242 3.2632
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.