Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership455,693 shares
Latest Disclosed Value $ 121,223,325
Rhumbline Advisers reports 1.31% decrease in ownership of ECL / Ecolab Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 455,693 shares of Ecolab Inc. (MX:ECL) valued at $121,223,325 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 461,741 shares of Ecolab Inc.. This represents a change in shares of -1.31% 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)
2026-05-12 2026-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 455,693 -6,048 -1.31 121,223 0.01 0.1037
2026-02-13 2025-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 461,741 -7,495 -1.60 121,216 -5.67 0.0980
2025-11-06 2025-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 469,236 1,553 0.33 128,505 1.98 0.1032
2025-08-12 2025-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 467,683 -31,215 -6.26 126,012 -0.37 0.1079
2025-05-29 2025-03-31 13F/A-1 ECOLAB INC COM STK USD1 COM 278865100 498,898 9,603 1.96 126,480 10.32 0.1183
2025-04-08 2025-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 498,898 9,603 126,480 0.1183
2025-05-29 2024-12-31 13F/A-1 ECOLAB INC COM STK USD1 COM 278865100 489,295 -20,281 -3.98 114,651 -11.88 0.1026
2025-01-30 2024-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 489,295 -20,281 114,651 0.1026
2024-11-12 2024-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 509,576 -14,074 -2.69 130,110 4.40 0.1174
2024-08-01 2024-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 523,650 7,539 1.46 124,629 4.58 0.1171
2024-05-09 2024-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 516,111 8,615 1.70 119,170 18.39 0.1144
2024-02-08 2023-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 507,496 -6,901 -1.34 100,662 15.52 0.1055
2023-11-09 2023-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 514,397 2,244 0.44 87,139 -8.86 0.1011
2023-08-08 2023-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 512,153 10,230 2.04 95,614 115,096.39 0.1071
2023-05-11 2023-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 501,923 23,807 4.98 83 -99.88 0.1025
2023-02-14 2022-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 478,116 20,055 4.38 69,595 5.20 0.0936
2022-11-10 2022-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 458,061 13,088 2.94 66,153 -3.31 0.0985
2022-08-11 2022-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 444,973 9,809 2.25 68,419 -10.95 0.0998
2022-05-12 2022-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 435,164 1,997 0.46 76,833 -24.39 0.0989
2022-02-10 2021-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 433,167 8,755 2.06 101,617 14.77 0.1245
2021-11-12 2021-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 424,412 -22,938 -5.13 88,541 -3.91 0.1198
2021-08-05 2021-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 447,350 -20,799 -4.44 92,141 -8.06 0.1209
2021-05-06 2021-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 468,149 -62,272 -11.74 100,217 -12.67 0.1362
2021-02-10 2020-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 530,421 -6,389 -1.19 114,762 6.98 0.1584
2020-11-12 2020-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 536,810 -8,570 -1.57 107,276 -1.13 0.1681
2020-08-13 2020-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 545,380 1,971 0.36 108,503 28.13 0.1812
2020-05-06 2020-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 543,409 12,210 2.30 84,679 -17.40 0.1775
2020-02-05 2019-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 531,199 6,750 1.29 102,516 -1.30 0.1714
2019-10-23 2019-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 524,449 11,715 2.28 103,862 2.60 0.1898
2019-08-14 2019-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 512,734 -4,937 -0.95 101,234 10.77 0.1900
2019-05-01 2019-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 517,671 1,589 0.31 91,390 20.18 0.1770
2019-01-31 2018-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 516,082 13,835 2.75 76,045 -3.43 0.1655
2018-11-07 2018-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 502,247 -18,160 -3.49 78,742 7.82 0.1521
2018-08-06 2018-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 520,407 17,673 3.52 73,029 5.98 0.1473
2018-05-02 2018-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 502,734 1,688 0.34 68,910 2.50 0.1439
2018-02-09 2017-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 501,046 2,991 0.60 67,230 4.96 0.1365
2017-11-06 2017-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 498,055 3,716 0.75 64,055 -2.39 0.1393
2017-08-02 2017-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 494,339 1,829 0.37 65,624 6.31 0.1498
2017-05-02 2017-03-31 13F ECOLAB INC COM STK USD1 COM 278865100 492,510 9,028 1.87 61,731 8.92 0.1442
2017-01-27 2016-12-31 13F ECOLAB INC COM STK USD1 COM 278865100 483,482 14,172 3.02 56,674 -0.79 0.1436
2016-11-08 2016-09-30 13F ECOLAB INC COM STK USD1 COM 278865100 469,310 17,876 3.96 57,124 6.69 0.1574
2016-08-11 2016-06-30 13F ECOLAB INC COM STK USD1 COM 278865100 451,434 16,427 3.78 53,540 10.36 0.1586
2016-05-02 2016-03-31 13F ECOLAB INC USD1. COM 278865100 435,007 7,255 1.70 48,512 -0.85 0.1505
2016-02-03 2015-12-31 13F ECOLAB INC USD1. COM 278865100 427,752 4,616 1.09 48,926 5.38 0.1574
2015-11-04 2015-09-30 13F ECOLAB INC USD1. COM 278865100 423,136 7,540 1.81 46,426 -1.20 0.1579
2015-08-04 2015-06-30 13F ECOLAB INC USD1. COM 278865100 415,596 -58,661 -12.37 46,991 -13.37 0.1498
2015-05-12 2015-03-31 13F ECOLAB INC USD1. COM 278865100 474,257 -4,984 -1.04 54,246 8.30 0.1565
2015-02-06 2014-12-31 13F ECOLAB INC USD1. COM 278865100 479,241 -8,279 -1.70 50,090 -10.52 0.1455
2014-11-12 2014-09-30 13F ECOLAB INC USD1. COM 278865100 487,520 -40,101 -7.60 55,982 -4.70 0.1682
2014-08-06 2014-06-30 13F ECOLAB INC USD1. COM 278865100 527,621 -14,436 -2.66 58,745 0.36 0.1724
2014-05-06 2014-03-31 13F ECOLAB INC USD1. COM 278865100 542,057 3,579 0.66 58,537 4.26 0.1736
2014-02-03 2013-12-31 13F ECOLAB INC USD1. COM 278865100 538,478 -14,879 -2.69 56,147 2.74 0.1656
2013-11-05 2013-09-30 13F ECOLAB INC USD1. COM 278865100 553,357 -13,542 -2.39 54,650 13.16 0.1693
2013-08-07 2013-06-30 13F ECOLAB INC USD1. COM 278865100 566,899 566,899 48,294 0.1552
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.