Ecolab Inc.
US ˙ NYSE ˙ US2788651006

SecurityECL / Ecolab Inc.
InstitutionWealthfront Advisers Llc
Latest Disclosed Ownership39,935 shares
Latest Disclosed Value $ 10,623,509
Wealthfront Advisers Llc reports 25.12% increase in ownership of ECL / Ecolab Inc.

On May 5, 2026 - Wealthfront Advisers Llc filed a 13F-HR form disclosing ownership of 39,935 shares of Ecolab Inc. (US:ECL) valued at $10,623,509 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 31,918 shares of Ecolab Inc.. This represents a change in shares of 25.12% during the quarter. The current value of the position is $10,210,181 USD.

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)
2026-05-05 2026-03-31 13F ECOLAB COM 278865100 39,935 8,017 25.12 10,624 26.78 0.0233
2026-01-30 2025-12-31 13F ECOLAB COM 278865100 31,918 3,004 10.39 8,379 5.82 0.0187
2025-11-06 2025-09-30 13F ECOLAB COM 278865100 28,914 3,907 15.62 7,918 17.53 0.0186
2025-07-31 2025-06-30 13F ECOLAB COM 278865100 25,007 1,248 5.25 6,738 11.85 0.0174
2025-05-02 2025-03-31 13F ECOLAB COM 278865100 23,759 2,337 10.91 6,023 20.00 0.0162
2025-04-01 2024-12-31 13F/A-1 ECOLAB COM 278865100 21,422 560 2.68 5,020 -5.76 0.0147
2024-11-12 2024-09-30 13F ECOLAB COM 278865100 20,862 -480 -2.25 5,327 4.86 0.0164
2024-08-14 2024-06-30 13F ECOLAB COM 278865100 21,342 84 0.40 5,079 3.48 0.0171
2024-04-19 2024-03-31 13F ECOLAB COM 278865100 21,258 194 0.92 4,908 17.47 0.0172
2024-02-09 2023-12-31 13F ECOLAB COM 278865100 21,064 -8,653 -29.12 4,178 -17.00 0.0160
2023-11-01 2023-09-30 13F ECOLAB COM 278865100 29,717 -736 -2.42 5,034 -11.45 0.0217
2023-08-07 2023-06-30 13F ECOLAB COM 278865100 30,453 -1,536 -4.80 5,685 7.37 0.0241
2023-04-28 2023-03-31 13F ECOLAB COM 278865100 31,989 20,753 184.70 5,295 223.85 0.0241
2023-02-10 2022-12-31 13F ECOLAB COM 278865100 11,236 1,953 21.04 1,636 21.92 0.0079
2022-11-14 2022-09-30 13F ECOLAB COM 278865100 9,283 1,116 13.66 1,341 6.77 0.0071
2022-07-20 2022-06-30 13F ECOLAB COM 278865100 8,167 148 1.85 1,256 -11.30 0.0063
2022-05-16 2022-03-31 13F ECOLAB COM 278865100 8,019 215 2.75 1,416 -22.62 0.0062
2022-01-21 2021-12-31 13F ECOLAB COM 278865100 7,804 279 3.71 1,830 16.56 0.0077
2021-11-15 2021-09-30 13F ECOLAB COM 278865100 7,525 1,789 31.19 1,570 32.94 0.0073
2021-08-16 2021-06-30 13F ECOLAB COM 278865100 5,736 101 1.79 1,181 -2.07 0.0056
2021-05-14 2021-03-31 13F ECOLAB COM 278865100 5,635 -76 -1.33 1,206 -2.43 0.0065
2021-02-16 2020-12-31 13F ECOLAB COM 278865100 5,711 194 3.52 1,236 12.06 0.0074
2020-11-16 2020-09-30 13F ECOLAB COM 278865100 5,517 -615 -10.03 1,103 -9.59 0.0079
2020-08-14 2020-06-30 13F ECOLAB COM 278865100 6,132 623 11.31 1,220 42.19 0.0095
2020-05-15 2020-03-31 13F ECOLAB COM 278865100 5,509 -3,351 -37.82 858 -49.82 0.0078
2020-01-21 2019-12-31 13F ECOLAB COM 278865100 8,860 -596 -6.30 1,710 -8.70 0.0127
2019-10-15 2019-09-30 13F ECOLAB COM 278865100 9,456 1,047 12.45 1,873 12.83 0.0157
2019-08-13 2019-06-30 13F ECOLAB COM 278865100 8,409 326 4.03 1,660 16.33 0.0144
2019-05-13 2019-03-31 13F ECOLAB COM 278865100 8,083 493 6.50 1,427 27.64 0.0132
2019-02-14 2018-12-31 13F ECOLAB COM 278865100 7,590 7,590 1,118 0.0119
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.