Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership1,701,151 shares
Latest Disclosed Value $ 452,536,827
Janus Henderson Group Plc reports 6.90% increase in ownership of ECL / Ecolab Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 1,701,151 shares of Ecolab Inc. (MX:ECL) valued at $452,536,827 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,591,274 shares of Ecolab Inc.. This represents a change in shares of 6.90% 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)
2026-05-18 2026-03-31 13F/A-1 ECOLAB COM 278865100 1,701,151 109,877 6.90 452,537 8.33 0.0763
2026-05-15 2026-03-31 13F ECOLAB COM 278865100 1,701,151 109,877 6.90 452,537 8.33 0.0840
2026-02-17 2025-12-31 13F ECOLAB COM 278865100 1,591,274 813,996 104.72 417,747 96.25 0.1871
2025-11-14 2025-09-30 13F ECOLAB COM 278865100 777,278 134,995 21.02 212,868 23.01 0.0972
2025-08-14 2025-06-30 13F ECOLAB COM 278865100 642,283 604,055 1,580.14 173,055 1,714.94 0.0848
2025-05-15 2025-03-31 13F ECOLAB COM 278865100 38,228 -49 -0.13 9,535 6.28 0.0052
2025-02-14 2024-12-31 13F ECOLAB COM 278865100 38,277 -16,371 -29.96 8,972 -35.69 0.0046
2024-11-14 2024-09-30 13F ECOLAB COM 278865100 54,648 -1,208 -2.16 13,952 4.95 0.0071
2024-08-14 2024-06-30 13F ECOLAB COM 278865100 55,856 1,100 2.01 13,293 5.19 0.0071
2024-05-15 2024-03-31 13F ECOLAB COM 278865100 54,756 -15,221 -21.75 12,638 -8.95 0.0069
2024-02-14 2023-12-31 13F ECOLAB COM 278865100 69,977 32,440 86.42 13,880 118.26 0.0083
2023-11-14 2023-09-30 13F ECOLAB COM 278865100 37,537 1,996 5.62 6,360 -4.13 0.0042
2023-08-14 2023-06-30 13F ECOLAB COM 278865100 35,541 -1,366 -3.70 6,634 8.58 0.0041
2023-05-15 2023-03-31 13F ECOLAB COM 278865100 36,907 -20,931 -36.19 6,109 -27.44 0.0040
2023-02-14 2022-12-31 13F ECOLAB COM 278865100 57,838 28,803 99.20 8,419 100.64 0.0060
2023-01-13 2022-09-30 13F/A-1 ECOLAB COM 278865100 29,035 -6,377 -18.01 4,196 -22.97 0.0031
2022-11-14 2022-09-30 13F ECOLAB COM 278865100 29,035 -6,377 4,196 0.0011
2022-08-15 2022-06-30 13F ECOLAB COM 278865100 35,412 -12,069 -25.42 5,447 -35.03 0.0038
2022-05-16 2022-03-31 13F ECOLAB COM 278865100 47,481 12 0.03 8,384 -24.70 0.0040
2022-02-14 2021-12-31 13F ECOLAB COM 278865100 47,469 -3,147 -6.22 11,134 5.45 0.0046
2021-11-16 2021-09-30 13F ECOLAB COM 278865100 50,616 -7,191 -12.44 10,559 -11.30 0.0046
2021-08-16 2021-06-30 13F ECOLAB COM 278865100 57,807 -33,963 -37.01 11,904 -39.42 0.0051
2021-05-17 2021-03-31 13F ECOLAB COM 278865100 91,770 -35,809 -28.07 19,650 -28.81 0.0090
2021-02-16 2020-12-31 13F ECOLAB COM 278865100 127,579 -23,590 -15.61 27,601 -8.61 0.0128
2020-11-16 2020-09-30 13F ECOLAB COM 278865100 151,169 8,552 6.00 30,200 6.45 0.0157
2020-08-14 2020-06-30 13F ECOLAB COM 278865100 142,617 18,131 14.56 28,369 46.23 0.0159
2020-05-14 2020-03-31 13F ECOLAB COM 278865100 124,486 -168,001 -57.44 19,400 -65.63 0.0134
2020-02-18 2019-12-31 13F ECOLAB COM 278865100 292,487 -156,045 -34.79 56,445 -36.45 0.0289
2019-11-14 2019-09-30 13F ECOLAB COM 278865100 448,532 132,095 41.74 88,821 42.25 0.0481
2019-07-31 2019-06-30 13F ECOLAB COM 278865100 316,437 81,864 34.90 62,439 50.79 0.0340
2019-04-30 2019-03-31 13F ECOLAB COM 278865100 234,573 83,815 55.60 41,408 86.40 0.0229
2019-02-06 2018-12-31 13F ECOLAB COM 278865100 150,758 3,860 2.63 22,215 -3.54 0.0142
2018-11-09 2018-09-30 13F ECOLAB COM 278865100 146,898 13,176 9.85 23,030 22.72 0.0123
2018-08-10 2018-06-30 13F ECOLAB COM 278865100 133,722 28,898 27.57 18,766 30.61 0.0107
2018-05-14 2018-03-31 13F ECOLAB COM 278865100 104,824 -10,152 -8.83 14,368 -6.88 0.0085
2018-03-12 2017-12-31 13F/A-1 ECOLAB COM 278865100 114,976 -76,084 -39.82 15,429 -37.21 0.0095
2018-02-09 2017-12-31 13F ECOLAB COM 278865100 114,976 -76,084 15,429
2017-11-14 2017-09-30 13F ECOLAB COM 278865100 191,060 8,748 4.80 24,573 1.54 0.0157
2017-08-17 2017-06-30 13F/A-1 ECOLAB COM 278865100 182,312 35,028 23.78 24,201 31.09 0.0165
2017-08-14 2017-06-30 13F ECOLAB COM 278865100 182,312 35,028 24,201
2017-05-03 2017-03-31 13F ECOLAB COM 278865100 147,284 -4,782 -3.14 18,461 3.56 0.1296
2017-01-30 2016-12-31 13F ECOLAB COM 278865100 152,066 -7,980 -4.99 17,826 -8.46 0.1315
2016-10-24 2016-09-30 13F ECOLAB COM 278865100 160,046 -9,322 -5.50 19,474 -3.05 0.1435
2016-07-29 2016-06-30 13F ECOLAB COM 278865100 169,368 -10,796 -5.99 20,086 -0.02 0.1670
2016-05-12 2016-03-31 13F ECOLAB COM 278865100 180,164 111,126 160.96 20,090 154.40 0.1630
2016-02-03 2015-12-31 13F ECOLAB COM 278865100 69,038 -3,394 -4.69 7,897 -0.63 0.0634
2015-11-16 2015-09-30 13F ECOLAB COM 278865100 72,432 5,521 8.25 7,947 5.02 0.0700
2015-08-17 2015-06-30 13F ECOLAB COM 278865100 66,911 6,107 10.04 7,567 8.80 0.0595
2015-06-02 2015-03-31 13F/A-1 ECOLAB COM 278865100 60,804 -5,765 -8.66 6,955 -0.06 0.0537
2015-05-15 2015-03-31 13F ECOLAB COM 278865100 60,804 6,955
2015-02-12 2014-12-31 13F ECOLAB COM 278865100 66,569 16,758 33.64 6,959 21.64 0.0502
2014-11-12 2014-09-30 13F ECOLAB COM 278865100 49,811 0 0.00 5,721 3.19 0.0538
2014-08-13 2014-06-30 13F ECOLAB COM 278865100 49,811 -65,071 -56.64 5,544 -55.30 0.0518
2014-05-08 2014-03-31 13F ECOLAB COM 278865100 114,882 63,627 124.14 12,404 132.11 0.1208
2014-01-14 2013-12-31 13F ECOLAB COM 278865100 51,255 0 0.00 5,344 5.53 0.0540
2013-11-12 2013-09-30 13F ECOLAB COM 278865100 51,255 4,554 9.75 5,064 25.56 0.0559
2013-08-15 2013-06-30 13F ECOLAB COM 278865100 46,701 46,701 4,033 0.0471
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.