Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionAdvisors Asset Management, Inc.
Latest Disclosed Ownership14,402 shares
Latest Disclosed Value $ 3,831,220
Advisors Asset Management, Inc. reports 20.94% increase in ownership of ECL / Ecolab Inc.

On May 15, 2026 - Advisors Asset Management, Inc. filed a 13F-HR form disclosing ownership of 14,402 shares of Ecolab Inc. (MX:ECL) valued at $3,831,220 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 11,908 shares of Ecolab Inc.. This represents a change in shares of 20.94% 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)
2026-05-15 2026-03-31 13F ECOLAB COM 278865100 14,402 2,494 20.94 3,831 22.55 0.0636
2026-02-12 2025-12-31 13F ECOLAB COM 278865100 11,908 -236 -1.94 3,126 -5.98 0.0525
2025-11-06 2025-09-30 13F ECOLAB COM 278865100 12,144 822 7.26 3,326 9.02 0.0564
2025-08-12 2025-06-30 13F ECOLAB COM 278865100 11,322 -73 -0.64 3,051 5.61 0.0546
2025-05-15 2025-03-31 13F ECOLAB COM 278865100 11,395 1,108 10.77 2,889 19.83 0.0543
2025-02-10 2024-12-31 13F ECOLAB COM 278865100 10,287 2,615 34.08 2,410 23.08 0.0444
2024-11-08 2024-09-30 13F ECOLAB COM 278865100 7,672 433 5.98 1,959 13.70 0.0360
2024-08-14 2024-06-30 13F ECOLAB COM 278865100 7,239 2,390 49.29 1,723 53.89 0.0336
2024-05-14 2024-03-31 13F ECOLAB COM 278865100 4,849 300 6.59 1,120 24.06 0.0215
2024-02-14 2023-12-31 13F ECOLAB COM 278865100 4,549 1,825 67.00 902 95.66 0.0184
2023-11-14 2023-09-30 13F ECOLAB COM 278865100 2,724 141 5.46 461 -4.36 0.0100
2023-08-14 2023-06-30 13F ECOLAB COM 278865100 2,583 763 41.92 482 60.13 0.0099
2023-05-12 2023-03-31 13F ECOLAB COM 278865100 1,820 150 8.98 301 23.87 0.0061
2023-02-13 2022-12-31 13F ECOLAB COM 278865100 1,670 -550 -24.77 243 -24.30 0.0050
2022-11-08 2022-09-30 13F ECOLAB COM 278865100 2,220 -442 -16.60 321 -21.52 0.0067
2022-08-08 2022-06-30 13F ECOLAB COM 278865100 2,662 -1,246 -31.88 409 -40.72 0.0078
2022-05-17 2022-03-31 13F ECOLAB COM 278865100 3,908 -266 -6.37 690 -29.52 0.0106
2022-02-15 2021-12-31 13F ECOLAB COM 278865100 4,174 -131 -3.04 979 9.02 0.0140
2021-11-12 2021-09-30 13F ECOLAB COM 278865100 4,305 -3,261 -43.10 898 -42.36 0.0137
2021-07-30 2021-06-30 13F ECOLAB COM 278865100 7,566 243 3.32 1,558 -0.64 0.0230
2021-05-07 2021-03-31 13F ECOLAB COM 278865100 7,323 -1,342 -15.49 1,568 -16.37 0.0244
2021-02-12 2020-12-31 13F ECOLAB COM 278865100 8,665 -3,513 -28.85 1,875 -22.97 0.0310
2020-11-16 2020-09-30 13F ECOLAB COM 278865100 12,178 1,403 13.02 2,434 13.53 0.0450
2020-08-12 2020-06-30 13F ECOLAB COM 278865100 10,775 -4,840 -31.00 2,144 -11.88 0.0417
2020-05-15 2020-03-31 13F ECOLAB COM 278865100 15,615 -3,942 -20.16 2,433 -35.53 0.0579
2020-05-20 2019-12-31 13F/A-1 ECOLAB COM 278865100 19,557 -7,750 -28.38 3,774 -30.21 0.0662
2020-02-14 2019-12-31 13F ECOLAB COM 278865100 19,557 -7,750 3,773 33,394.6173
2019-11-14 2019-09-30 13F ECOLAB COM 278865100 27,307 -3,746 -12.06 5,408 -11.79 0.0996
2019-11-14 2019-06-30 13F/A-1 ECOLAB COM 278865100 31,053 -2,564 -7.63 6,131 3.30 0.1106
2019-08-14 2019-06-30 13F ECOLAB COM 278865100 31,053 -2,564 6,131
2019-05-15 2019-03-31 13F ECOLAB COM 278865100 33,617 3,312 10.93 5,935 32.92 0.1056
2019-02-06 2018-12-31 13F/A-1 ECOLAB COM 278865100 30,305 2,038 7.21 4,465 0.74 0.0899
2019-01-31 2018-12-31 13F ECOLAB COM 278865100 30,305 2,038 4,465
2018-11-15 2018-09-30 13F ECOLAB COM 278865100 28,267 2,289 8.81 4,432 21.59 0.0724
2018-08-22 2018-06-30 13F/A-1 ECOLAB COM 278865100 25,978 -1,223 -4.50 3,645 2.73 0.0619
2018-08-15 2018-06-30 13F ECOLAB COM 278865100 15,640 -11,561 3,645
2018-05-15 2018-03-31 13F ECOLAB COM 278865100 27,201 448 1.67 3,548 -1.17 0.0594
2018-02-13 2017-12-31 13F ECOLAB COM 278865100 26,753 -964 -3.48 3,590 0.70 0.0590
2017-11-07 2017-09-30 13F ECOLAB COM 278865100 27,717 -13,124 -32.13 3,565 -34.25 0.0597
2017-08-02 2017-06-30 13F ECOLAB COM 278865100 40,841 -2,103 -4.90 5,422 0.72 0.0906
2017-05-02 2017-03-31 13F ECOLAB COM 278865100 42,944 -3,065 -6.66 5,383 -3.87 0.0902
2016-10-31 2016-09-30 13F ECOLAB COM 278865100 46,009 -11,884 -20.53 5,600 -18.44 0.0918
2016-08-08 2016-06-30 13F ECOLAB COM 278865100 57,893 -5,378 -8.50 6,866 -2.69 0.1113
2016-05-16 2016-03-31 13F ECOLAB COM 278865100 63,271 -6,042 -8.72 7,056 -11.00 0.1174
2016-02-10 2015-12-31 13F ECOLAB COM 278865100 69,313 5,337 8.34 7,928 12.95 0.1258
2015-11-16 2015-09-30 13F ECOLAB COM 278865100 63,976 2,848 4.66 7,019 1.55 0.1119
2015-08-11 2015-06-30 13F ECOLAB COM 278865100 61,128 -559 -0.91 6,912 -2.04 0.0949
2015-05-13 2015-03-31 13F ECOLAB COM 278865100 61,687 -9,937 -13.87 7,056 -5.74 0.0940
2015-02-05 2014-12-31 13F ECOLAB COM 278865100 71,624 5,858 8.91 7,486 -0.87 0.1004
2014-11-13 2014-09-30 13F ECOLAB COM 278865100 65,766 15,694 31.34 7,552 35.46 0.1042
2014-08-14 2014-06-30 13F ECOLAB COM 278865100 50,072 5,564 12.50 5,575 16.00 0.0773
2014-05-15 2014-03-31 13F ECOLAB COM 278865100 44,508 4,505 11.26 4,806 15.22 0.0729
2014-02-03 2013-12-31 13F ECOLAB COM 278865100 40,003 6,458 19.25 4,171 25.90 0.0672
2013-11-15 2013-09-30 13F ECOLAB COM 278865100 33,545 12,556 59.82 3,313 85.29 0.0588
2013-08-14 2013-06-30 13F ECOLAB COM 278865100 20,989 20,989 1,788 0.0338
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.