Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionKorea Investment CORP
Latest Disclosed Ownership149,574 shares
Latest Disclosed Value $ 39,789,675
Korea Investment CORP reports 19.74% decrease in ownership of ECL / Ecolab Inc.

On May 13, 2026 - Korea Investment CORP filed a 13F-HR form disclosing ownership of 149,574 shares of Ecolab Inc. (MX:ECL) valued at $39,789,675 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 186,372 shares of Ecolab Inc.. This represents a change in shares of -19.74% 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)
2026-05-13 2026-03-31 13F ECOLAB COM 278865100 149,574 -36,798 -19.74 39,790 -18.68 0.0824
2026-02-13 2025-12-31 13F ECOLAB COM 278865100 186,372 2,584 1.41 48,926 -2.79 0.0963
2025-11-13 2025-09-30 13F ECOLAB COM 278865100 183,788 504 0.27 50,332 1.92 0.1035
2025-08-13 2025-06-30 13F ECOLAB COM 278865100 183,284 -13,111 -6.68 49,384 -0.82 0.1099
2025-05-14 2025-03-31 13F ECOLAB COM 278865100 196,395 -18,111 -8.44 49,790 -0.94 0.1207
2025-02-12 2024-12-31 13F ECOLAB COM 278865100 214,506 -21,191 -8.99 50,263 -16.48 0.1192
2024-11-13 2024-09-30 13F ECOLAB COM 278865100 235,697 38,031 19.24 60,181 27.92 0.1428
2024-08-13 2024-06-30 13F ECOLAB COM 278865100 197,666 15,008 8.22 47,045 11.54 0.1185
2024-05-14 2024-03-31 13F ECOLAB COM 278865100 182,658 -9,159 -4.77 42,176 10.85 0.1070
2024-02-13 2023-12-31 13F ECOLAB COM 278865100 191,817 -15,245 -7.36 38,047 8.47 0.0999
2023-11-13 2023-09-30 13F ECOLAB COM 278865100 207,062 22,935 12.46 35,076 2.04 0.1033
2023-08-11 2023-06-30 13F ECOLAB COM 278865100 184,127 -47,900 -20.64 34,375 -10.50 0.0966
2023-05-12 2023-03-31 13F ECOLAB COM 278865100 232,027 75,707 48.43 38,407 68.80 0.1118
2023-02-13 2022-12-31 13F ECOLAB COM 278865100 156,320 -67,012 -30.01 22,754 -29.46 0.0715
2022-11-10 2022-09-30 13F ECOLAB COM 278865100 223,332 -15,807 -6.61 32,254 -12.28 0.0993
2022-08-12 2022-06-30 13F ECOLAB COM 278865100 239,139 36,879 18.23 36,770 2.97 0.1124
2022-05-13 2022-03-31 13F ECOLAB COM 278865100 202,260 99,000 95.87 35,711 47.42 0.0883
2022-02-09 2021-12-31 13F ECOLAB COM 278865100 103,260 46,300 81.29 24,224 103.85 0.0630
2021-11-12 2021-09-30 13F ECOLAB COM 278865100 56,960 -23,300 -29.03 11,883 -28.12 0.0354
2021-08-12 2021-06-30 13F ECOLAB COM 278865100 80,260 -9,700 -10.78 16,531 -14.16 0.0473
2021-05-13 2021-03-31 13F ECOLAB COM 278865100 89,960 10,900 13.79 19,258 12.59 0.0608
2021-02-10 2020-12-31 13F ECOLAB COM 278865100 79,060 -3,100 -3.77 17,105 4.18 0.0514
2020-11-12 2020-09-30 13F ECOLAB COM 278865100 82,160 -19,500 -19.18 16,419 -18.82 0.0580
2020-08-12 2020-06-30 13F ECOLAB COM 278865100 101,660 -62,240 -37.97 20,225 -20.81 0.0743
2020-05-14 2020-03-31 13F ECOLAB COM 278865100 163,900 5,900 3.73 25,541 -16.24 0.1121
2020-02-11 2019-12-31 13F ECOLAB COM 278865100 158,000 -3,700 -2.29 30,492 -4.78 0.1112
2019-11-12 2019-09-30 13F ECOLAB COM 278865100 161,700 -7,400 -4.38 32,023 -4.09 0.1354
2019-08-12 2019-06-30 13F ECOLAB COM 278865100 169,100 29,600 21.22 33,387 35.57 0.1435
2019-05-15 2019-03-31 13F ECOLAB COM 278865100 139,500 31,145 28.74 24,627 54.25 0.1108
2019-02-13 2018-12-31 13F ECOLAB COM 278865100 108,355 -8,800 -7.51 15,966 -13.08 0.0868
2018-11-13 2018-09-30 13F ECOLAB COM 278865100 117,155 45,720 64.00 18,368 83.24 0.0847
2018-08-13 2018-06-30 13F ECOLAB COM 278865100 71,435 16,927 31.05 10,024 34.17 0.0457
2018-05-09 2018-03-31 13F ECOLAB COM 278865100 54,508 -11,627 -17.58 7,471 -15.81 0.0348
2018-02-12 2017-12-31 13F ECOLAB COM 278865100 66,135 -6,300 -8.70 8,874 -4.74 0.0404
2017-10-25 2017-09-30 13F ECOLAB COM 278865100 72,435 -900 -1.23 9,316 -4.30 0.0430
2017-07-31 2017-06-30 13F ECOLAB COM 278865100 73,335 5,828 8.63 9,735 15.06 0.0454
2017-04-25 2017-03-31 13F ECOLAB COM 278865100 67,507 43,397 180.00 8,461 199.40 0.0420
2017-02-13 2016-12-31 13F ECOLAB COM 278865100 24,110 -11,990 -33.21 2,826 -35.69 0.0136
2016-11-09 2016-09-30 13F ECOLAB COM 278865100 36,100 8,900 32.72 4,394 36.21 0.0234
2016-08-12 2016-06-30 13F ECOLAB COM 278865100 27,200 17,200 172.00 3,226 189.33 0.0192
2016-05-12 2016-03-31 13F ECOLAB COM 278865100 10,000 -25,300 -71.67 1,115 -72.38 0.0082
2016-02-01 2015-12-31 13F ECOLAB COM 278865100 35,300 3,100 9.63 4,037 14.30 0.0281
2015-11-12 2015-09-30 13F ECOLAB COM 278865100 32,200 13,800 75.00 3,532 69.81 0.0281
2015-08-13 2015-06-30 13F ECOLAB COM 278865100 18,400 0 0.00 2,080 -1.19 0.0177
2015-05-11 2015-03-31 13F ECOLAB COM 278865100 18,400 1,000 5.75 2,105 15.72 0.0164
2015-02-12 2014-12-31 13F ECOLAB COM 278865100 17,400 -4,200 -19.44 1,819 -26.65 0.0149
2014-11-14 2014-09-30 13F ECOLAB COM 278865100 21,600 300 1.41 2,480 4.55 0.0202
2014-08-14 2014-06-30 13F ECOLAB COM 278865100 21,300 -38,300 -64.26 2,372 -63.14 0.0197
2014-05-14 2014-03-31 13F ECOLAB COM 278865100 59,600 -18,000 -23.20 6,436 -20.45 0.0570
2014-02-06 2013-12-31 13F ECOLAB COM 278865100 77,600 -2,000 -2.51 8,091 2.93 0.0765
2013-11-07 2013-09-30 13F/A-1 ECOLAB COM 278865100 79,600 3,800 5.01 7,861 21.74 0.0835
2013-11-05 2013-09-30 13F ECOLAB COM 278865100 51,200 5,057
2013-08-08 2013-06-30 13F ECOLAB COM 278865100 75,800 75,800 6,457 0.0774
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.