Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionGuggenheim Capital Llc
Latest Disclosed Ownership64,648 shares
Latest Disclosed Value $ 17,197,661
Guggenheim Capital Llc reports 42.81% increase in ownership of ECL / Ecolab Inc.

On May 15, 2026 - Guggenheim Capital Llc filed a 13F-HR form disclosing ownership of 64,648 shares of Ecolab Inc. (MX:ECL) valued at $17,197,661 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 45,269 shares of Ecolab Inc.. This represents a change in shares of 42.81% 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 64,648 19,379 42.81 17,198 44.71 0.0664
2026-02-17 2025-12-31 13F ECOLAB COM 278865100 45,269 17,107 60.74 11,884 54.10 0.0851
2025-11-13 2025-09-30 13F ECOLAB COM 278865100 28,162 17,526 164.78 7,712 169.18 0.0560
2025-08-13 2025-06-30 13F ECOLAB COM 278865100 10,636 4,939 86.69 2,866 98.41 0.0227
2025-05-14 2025-03-31 13F ECOLAB COM 278865100 5,697 -1,122 -16.45 1,444 -9.58 0.0133
2025-02-13 2024-12-31 13F ECOLAB COM 278865100 6,819 -3,945 -36.65 1,598 -41.89 0.0130
2024-11-13 2024-09-30 13F ECOLAB COM 278865100 10,764 -6,319 -36.99 2,748 -32.40 0.0192
2024-08-14 2024-06-30 13F ECOLAB COM 278865100 17,083 7,272 74.12 4,066 79.47 0.0288
2024-05-14 2024-03-31 13F ECOLAB COM 278865100 9,811 -625 -5.99 2,265 9.47 0.0160
2024-02-14 2023-12-31 13F ECOLAB COM 278865100 10,436 -4,278 -29.07 2,070 -16.97 0.0156
2023-11-14 2023-09-30 13F ECOLAB COM 278865100 14,714 -19,430 -56.91 2,493 -60.90 0.0214
2023-08-11 2023-06-30 13F ECOLAB COM 278865100 34,144 -2,740 -7.43 6,374 4.41 0.0500
2023-05-11 2023-03-31 13F ECOLAB COM 278865100 36,884 19,537 112.62 6,105 141.78 0.0514
2023-02-14 2022-12-31 13F ECOLAB COM 278865100 17,347 454 2.69 2,525 3.48 0.0222
2022-11-14 2022-09-30 13F ECOLAB COM 278865100 16,893 -1,714 -9.21 2,440 -14.69 0.0223
2022-08-15 2022-06-30 13F ECOLAB COM 278865100 18,607 -10,025 -35.01 2,860 -43.42 0.0226
2022-05-16 2022-03-31 13F ECOLAB COM 278865100 28,632 7,710 36.85 5,055 3.00 0.0304
2022-02-14 2021-12-31 13F ECOLAB COM 278865100 20,922 3,530 20.30 4,908 35.28 0.0256
2021-11-15 2021-09-30 13F ECOLAB COM 278865100 17,392 -2,928 -14.41 3,628 -13.31 0.0218
2021-08-13 2021-06-30 13F ECOLAB COM 278865100 20,320 2,325 12.92 4,185 8.64 0.0246
2021-05-13 2021-03-31 13F ECOLAB COM 278865100 17,995 -8,962 -33.25 3,852 -33.95 0.0253
2021-02-16 2020-12-31 13F ECOLAB COM 278865100 26,957 -7,061 -20.76 5,832 -14.20 0.0366
2020-11-13 2020-09-30 13F ECOLAB COM 278865100 34,018 4,014 13.38 6,797 13.85 0.0492
2020-08-14 2020-06-30 13F ECOLAB COM 278865100 30,004 -45 -0.15 5,970 27.48 0.0462
2020-06-02 2020-03-31 13F ECOLAB COM 278865100 30,049 -4,105 -12.02 4,683 -28.95 0.0472
2020-02-20 2019-12-31 13F/A-1 ECOLAB COM 278865100 34,154 -12,237 -26.38 6,591 -28.26 0.0495
2020-02-14 2019-12-31 13F ECOLAB COM 278865100 34,154 -157,625 6,591 39,063.5395
2020-02-20 2019-09-30 13F/A-1 ECOLAB COM 278865100 46,391 3,666 8.58 9,187 8.90 0.0734
2019-11-14 2019-09-30 13F ECOLAB COM 278865100 46,391 -156,245 9,187 67,325.0308
2019-08-14 2019-06-30 13F ECOLAB COM 278865100 42,725 1,991 4.89 8,436 17.30 0.0686
2019-05-15 2019-03-31 13F ECOLAB COM 278865100 40,734 1,989 5.13 7,192 25.98 0.0586
2019-02-14 2018-12-31 13F ECOLAB COM 278865100 38,745 4,047 11.66 5,709 4.94 0.0484
2018-11-14 2018-09-30 13F ECOLAB COM 278865100 34,698 -807 -2.27 5,440 9.24 0.0354
2018-08-14 2018-06-30 13F ECOLAB COM 278865100 35,505 -318,062 -89.96 4,980 -89.72 0.0332
2018-05-15 2018-03-31 13F ECOLAB COM 278865100 353,567 1,580 0.45 48,463 2.61 0.1182
2018-02-14 2017-12-31 13F ECOLAB COM 278865100 351,987 67,075 23.54 47,229 28.89 0.1119
2017-11-14 2017-09-30 13F ECOLAB COM 278865100 284,912 8,905 3.23 36,643 0.01 0.0861
2017-08-14 2017-06-30 13F ECOLAB COM 278865100 276,007 -11,552 -4.02 36,640 1.66 0.0971
2017-05-15 2017-03-31 13F ECOLAB COM 278865100 287,559 -17,011 -5.59 36,042 0.96 0.0977
2017-02-14 2016-12-31 13F ECOLAB COM 278865100 304,570 51,465 20.33 35,701 15.88 0.1021
2016-11-14 2016-09-30 13F ECOLAB COM 278865100 253,105 -513 -0.20 30,808 2.42 0.0958
2016-08-15 2016-06-30 13F ECOLAB COM 278865100 253,618 7,040 2.86 30,079 9.39 0.0945
2016-05-16 2016-03-31 13F ECOLAB COM 278865100 246,578 -3,906 -1.56 27,498 -4.02 0.0868
2016-02-16 2015-12-31 13F ECOLAB COM 278865100 250,484 -102,864 -29.11 28,651 -26.10 0.0834
2015-11-16 2015-09-30 13F ECOLAB COM 278865100 353,348 -33,664 -8.70 38,769 -11.40 0.1193
2015-08-14 2015-06-30 13F ECOLAB COM 278865100 387,012 -5,394 -1.37 43,759 -2.51 0.1080
2015-05-18 2015-03-31 13F/A-1 ECOLAB COM 278865100 392,406 21,542 5.81 44,885 15.79 0.1062
2015-05-15 2015-03-31 13F ECOLAB COM 278865100 392,406 44,885
2015-02-17 2014-12-31 13F ECOLAB COM 278865100 370,864 24,742 7.15 38,763 -2.47 0.0972
2014-11-14 2014-09-30 13F ECOLAB COM 278865100 346,122 12,701 3.81 39,745 7.06 0.0959
2014-08-14 2014-06-30 13F ECOLAB COM 278865100 333,421 30,683 10.14 37,124 13.56 0.0939
2014-05-16 2014-03-31 13F ECOLAB COM 278865100 302,738 36,986 13.92 32,692 17.98 0.0930
2014-02-14 2013-12-31 13F ECOLAB COM 278865100 265,752 43,058 19.34 27,710 25.99 0.0842
2013-11-14 2013-09-30 13F ECOLAB COM 278865100 222,694 34,837 18.54 21,994 37.43 0.0790
2013-08-22 2013-06-30 13F/A-1 ECOLAB COM 278865100 187,857 187,857 16,004 0.0673
2013-08-14 2013-06-30 13F ECOLAB COM 278865100 187,857 16,004 0.0675
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.