Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionGreat Lakes Advisors, Llc
Latest Disclosed Ownership7,109 shares
Latest Disclosed Value $ 1,891,004
Great Lakes Advisors, Llc reports 41.16% decrease in ownership of ECL / Ecolab Inc.

On May 11, 2026 - Great Lakes Advisors, Llc filed a 13F-HR form disclosing ownership of 7,109 shares of Ecolab Inc. (MX:ECL) valued at $1,891,004 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 12,082 shares of Ecolab Inc.. This represents a change in shares of -41.16% 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)
2026-05-11 2026-03-31 13F Ecolab COM 278865100 7,109 -4,973 -41.16 1,891 -40.37 0.0046
2026-02-12 2025-12-31 13F Ecolab COM 278865100 12,082 -15,800 -56.67 3,172 -58.47 0.0259
2025-11-03 2025-09-30 13F Ecolab COM 278865100 27,882 -3,264 -10.48 7,636 -9.01 0.0637
2025-08-11 2025-06-30 13F Ecolab COM 278865100 31,146 -26,053 -45.55 8,392 -42.14 0.0703
2025-05-16 2025-03-31 13F Ecolab COM 278865100 57,199 -18,074 -24.01 14,501 -17.78 0.1297
2025-02-10 2024-12-31 13F Ecolab COM 278865100 75,273 -3,932 -4.96 17,638 -12.79 0.1509
2024-11-04 2024-09-30 13F Ecolab COM 278865100 79,205 7,497 10.45 20,224 18.50 0.1693
2024-08-06 2024-06-30 13F Ecolab COM 278865100 71,708 34,011 90.22 17,066 96.07 0.1514
2024-05-08 2024-03-31 13F Ecolab COM 278865100 37,697 9,842 35.33 8,704 57.54 0.0738
2024-02-08 2023-12-31 13F Ecolab COM 278865100 27,855 8,220 41.86 5,525 66.12 0.0526
2023-11-07 2023-09-30 13F Ecolab COM 278865100 19,635 10,589 117.06 3,326 97.04 0.0303
2023-08-10 2023-06-30 13F Ecolab COM 278865100 9,046 2,776 44.27 1,689 62.78 0.0169
2023-05-10 2023-03-31 13F Ecolab COM 278865100 6,270 490 8.48 1,038 23.31 0.0094
2023-02-09 2022-12-31 13F Ecolab COM 278865100 5,780 -11,030 -65.62 841 -65.36 0.0482
2022-11-09 2022-09-30 13F Ecolab COM 278865100 16,810 2,382 16.51 2,428 9.47 0.0530
2022-08-09 2022-06-30 13F Ecolab COM 278865100 14,428 -3,868 -21.14 2,218 -31.33 0.0439
2022-05-06 2022-03-31 13F Ecolab COM 278865100 18,296 13,458 278.17 3,230 184.58 0.0413
2022-05-06 2022-03-31 13F Ecolab COM 278865100 64 11
2022-02-09 2021-12-31 13F Ecolab COM 278865100 4,838 -46 -0.94 1,135 11.38 0.0173
2021-11-09 2021-09-30 13F Ecolab COM 278865100 4,884 -751 -13.33 1,019 -12.23 0.0159
2021-08-11 2021-06-30 13F Ecolab COM 278865100 5,635 158 2.88 1,161 -0.94 0.0175
2021-05-03 2021-03-31 13F Ecolab COM 278865100 5,477 -591 -9.74 1,172 -10.74 0.0189
2021-02-09 2020-12-31 13F Ecolab COM 278865100 6,068 -4,181 -40.79 1,313 -35.89 0.0238
2020-11-04 2020-09-30 13F Ecolab COM 278865100 10,249 1,209 13.37 2,048 13.90 0.0433
2020-08-07 2020-06-30 13F Ecolab COM 278865100 9,040 -1,470 -13.99 1,798 9.77 0.0436
2020-05-08 2020-03-31 13F Ecolab COM 278865100 10,510 -7,639 -42.09 1,638 -53.24 0.0478
2020-02-07 2019-12-31 13F Ecolab COM 278865100 18,149 -28 -0.15 3,503 -2.67 0.0752
2019-11-06 2019-09-30 13F Ecolab COM 278865100 18,177 -528 -2.82 3,599 -2.55 0.0790
2019-08-05 2019-06-30 13F Ecolab COM 278865100 18,705 -2,345 -11.14 3,693 -0.62 0.0805
2019-05-07 2019-03-31 13F Ecolab COM 278865100 21,050 -34 -0.16 3,716 19.60 0.0827
2019-02-13 2018-12-31 13F Ecolab COM 278865100 21,084 13,062 162.83 3,107 146.98 0.0736
2018-11-30 2018-09-30 13F/A-2 Ecolab COM 278865100 8,022 2,568 47.08 1,258 64.44 0.0278
2018-11-15 2018-09-30 13F/A-1 ECOLAB COM 278865100 3,573 -4,449 560 0.0913
2018-11-14 2018-09-30 13F ECOLAB COM 278865100 5,454 0 765
2018-08-13 2018-06-30 13F ECOLAB COM 278865100 5,454 -73 -1.32 765 0.92 0.0179
2018-05-07 2018-03-31 13F ECOLAB CS 278865100 5,527 -5,620 -50.42 758 -49.33 0.0181
2018-02-07 2017-12-31 13F ECOLAB CS 278865100 11,147 -4,891 -30.50 1,496 -27.48 0.0329
2017-11-13 2017-09-30 13F ECOLAB CS 278865100 16,038 359 2.29 2,063 -0.86 0.0485
2017-08-07 2017-06-30 13F ECOLAB CS 278865100 15,679 4,669 42.41 2,081 50.80 0.0510
2017-05-09 2017-03-31 13F ECOLAB CS 278865100 11,010 769 7.51 1,380 15.00 0.0355
2017-02-10 2016-12-31 13F ECOLAB CS 278865100 10,241 -352 -3.32 1,200 -6.90 0.0315
2016-11-07 2016-09-30 13F ECOLAB CS 278865100 10,593 -2,500 -19.09 1,289 -17.00 0.0350
2016-08-12 2016-06-30 13F ECOLAB CS 278865100 13,093 -4 -0.03 1,553 6.30 0.0423
2016-05-11 2016-03-31 13F ECOLAB CS 278865100 13,097 472 3.74 1,461 1.18 0.0400
2016-02-12 2015-12-31 13F ECOLAB CS 278865100 12,625 -5,635 -30.86 1,444 -27.94 0.0433
2015-10-30 2015-09-30 13F ECOLAB CS 278865100 18,260 13,791 308.59 2,004 296.83 0.0621
2015-08-12 2015-06-30 13F ECOLAB CS 278865100 4,469 -363 -7.51 505 -8.68 0.0154
2015-05-06 2015-03-31 13F ECOLAB CS 278865100 4,832 -556 -10.32 553 -1.78 0.0169
2015-02-11 2014-12-31 13F ECOLAB CS 278865100 5,388 769 16.65 563 6.23 0.0175
2014-11-20 2014-09-30 13F ECOLAB CS 278865100 4,619 79 1.74 530 4.74 0.0178
2014-08-19 2014-06-30 13F ECOLAB CS 278865100 4,540 -205 -4.32 506 -1.17 0.0208
2014-05-22 2014-03-31 13F ECOLAB COMMON 278865100 4,745 69 1.48 512 5.13 0.0223
2014-05-22 2013-12-31 13F/A-1 ECOLAB com 278865100 4,676 -874 -15.75 487 -11.13 0.0221
2014-02-24 2013-12-31 13F ECOLAB com 278865100 4,676 487
2013-11-27 2013-09-30 13F ECOLAB com 278865100 5,550 153 2.83 548 19.13 0.0246
2013-08-16 2013-06-30 13F ECOLAB com 278865100 5,397 5,397 460 0.0216
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.