Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionAdage Capital Partners Gp, L.l.c.
ManagerPhil Gross, Robert Atchinson
Latest Disclosed Ownership113,325 shares
Latest Disclosed Value $ 30,146,717
Adage Capital Partners Gp, L.l.c. reports 50.76% decrease in ownership of ECL / Ecolab Inc.

On May 15, 2026 - Adage Capital Partners Gp, L.l.c. filed a 13F-HR form disclosing ownership of 113,325 shares of Ecolab Inc. (MX:ECL) valued at $30,146,717 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 230,125 shares of Ecolab Inc.. This represents a change in shares of -50.76% 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)
2026-05-15 2026-03-31 13F ECOLAB COM 278865100 113,325 -116,800 -50.76 30,147 -50.10 0.0465
2026-02-17 2025-12-31 13F ECOLAB COM 278865100 230,125 28,000 13.85 60,412 9.14 0.0914
2025-11-14 2025-09-30 13F ECOLAB COM 278865100 202,125 26,000 14.76 55,354 16.64 0.0877
2025-08-14 2025-06-30 13F ECOLAB COM 278865100 176,125 -8,900 -4.81 47,455 1.17 0.0800
2025-05-15 2025-03-31 13F ECOLAB COM 278865100 185,025 16,600 9.86 46,908 18.86 0.0869
2025-02-14 2024-12-31 13F ECOLAB COM 278865100 168,425 -79,300 -32.01 39,465 -37.61 0.0690
2024-11-14 2024-09-30 13F ECOLAB COM 278865100 247,725 3,900 1.60 63,252 9.00 0.1117
2024-08-14 2024-06-30 13F ECOLAB COM 278865100 243,825 -5,100 -2.05 58,030 0.96 0.1074
2024-05-15 2024-03-31 13F ECOLAB COM 278865100 248,925 32,400 14.96 57,477 33.83 0.1085
2024-02-14 2023-12-31 13F ECOLAB COM 278865100 216,525 -35,700 -14.15 42,948 0.52 0.0889
2023-11-14 2023-09-30 13F ECOLAB COM 278865100 252,225 5,400 2.19 42,727 -7.28 0.0969
2023-08-14 2023-06-30 13F ECOLAB COM 278865100 246,825 -1,300 -0.52 46,080 12.19 0.1001
2023-05-15 2023-03-31 13F ECOLAB COM 278865100 248,125 -3,900 -1.55 41,072 11.96 0.0921
2023-02-14 2022-12-31 13F ECOLAB COM 278865100 252,025 -600 -0.24 36,685 0.55 0.0878
2022-11-14 2022-09-30 13F ECOLAB COM 278865100 252,625 53,800 27.06 36,484 19.34 0.0905
2022-08-15 2022-06-30 13F ECOLAB COM 278865100 198,825 -61,500 -23.62 30,571 -33.49 0.0701
2022-05-16 2022-03-31 13F ECOLAB COM 278865100 260,325 -5,300 -2.00 45,963 -26.24 0.0873
2022-02-14 2021-12-31 13F ECOLAB COM 278865100 265,625 -71,000 -21.09 62,313 -11.27 0.1122
2021-11-15 2021-09-30 13F ECOLAB COM 278865100 336,625 106,200 46.09 70,227 47.97 0.1383
2021-08-16 2021-06-30 13F ECOLAB COM 278865100 230,425 11,500 5.25 47,461 1.27 0.0929
2021-05-17 2021-03-31 13F ECOLAB COM 278865100 218,925 -46,499 -17.52 46,865 -18.39 0.0957
2021-02-16 2020-12-31 13F ECOLAB COM 278865100 265,424 130,400 96.58 57,427 112.83 0.1252
2020-11-16 2020-09-30 13F ECOLAB COM 278865100 135,024 -47,147 -25.88 26,983 -25.55 0.0675
2020-08-14 2020-06-30 13F ECOLAB COM 278865100 182,171 182,171 36,243 0.0928
2020-05-15 2020-03-31 13F ECOLAB COM 278865100 0 -353,980 -100.00 0 -100.00
2020-02-14 2019-12-31 13F ECOLAB COM 278865100 353,980 91,100 34.65 68,315 31.22 0.1678
2019-11-14 2019-09-30 13F ECOLAB COM 278865100 262,880 174,400 197.11 52,061 198.02 0.1278
2019-08-14 2019-06-30 13F ECOLAB COM 278865100 88,480 88,480 17,469 0.0435
2019-05-15 2019-03-31 13F ECOLAB COM 278865100 0 -37,169 -100.00 0 -100.00
2019-02-14 2018-12-31 13F ECOLAB COM 278865100 37,169 27,604 288.59 5,477 265.13 0.0152
2018-11-14 2018-09-30 13F ECOLAB COM 278865100 9,565 -260,300 -96.46 1,500 -96.04 0.0033
2018-08-14 2018-06-30 13F ECOLAB COM 278865100 269,865 -79,800 -22.82 37,870 -20.99 0.0867
2018-05-15 2018-03-31 13F ECOLAB COM 278865100 349,665 -19,240 -5.22 47,929 -3.17 0.1115
2018-02-14 2017-12-31 13F ECOLAB COM 278865100 368,905 -97,167 -20.85 49,500 -17.42 0.1119
2017-11-14 2017-09-30 13F ECOLAB COM 278865100 466,072 234,258 101.05 59,942 94.79 0.1457
2017-08-14 2017-06-30 13F ECOLAB COM 278865100 231,814 31,977 16.00 30,773 22.86 0.0753
2017-05-15 2017-03-31 13F ECOLAB COM 278865100 199,837 -176,900 -46.96 25,048 -43.28 0.0631
2017-02-14 2016-12-31 13F ECOLAB COM 278865100 376,737 -30,200 -7.42 44,161 -10.84 0.1206
2016-11-14 2016-09-30 13F ECOLAB COM 278865100 406,937 17,300 4.44 49,532 7.19 0.1364
2016-08-15 2016-06-30 13F ECOLAB COM 278865100 389,637 -12,200 -3.04 46,211 3.12 0.1261
2016-05-16 2016-03-31 13F ECOLAB COM 278865100 401,837 -201 -0.05 44,813 -2.55 0.1215
2016-02-16 2015-12-31 13F ECOLAB COM 278865100 402,038 -2,900 -0.72 45,985 3.50 0.1205
2015-11-16 2015-09-30 13F ECOLAB COM 278865100 404,938 -265,000 -39.56 44,431 -41.35 0.1233
2015-08-14 2015-06-30 13F ECOLAB COM 278865100 669,938 75,000 12.61 75,751 11.32 0.1889
2015-05-15 2015-03-31 13F ECOLAB COM 278865100 594,938 -1,050,609 -63.85 68,050 -60.43 0.1659
2015-02-17 2014-12-31 13F ECOLAB COM 278865100 1,645,547 998,409 154.28 171,993 131.45 0.4208
2014-11-14 2014-09-30 13F ECOLAB COM 278865100 647,138 -206,000 -24.15 74,312 -21.77 0.1836
2014-08-14 2014-06-30 13F ECOLAB COM 278865100 853,138 143,500 20.22 94,989 22.35 0.2455
2014-05-15 2014-03-31 13F ECOLAB COM 278865100 709,638 293,000 70.32 77,634 78.70 0.2120
2014-02-14 2013-12-31 13F ECOLAB COM 278865100 416,638 8,000 1.96 43,444 7.65 0.1150
2013-11-14 2013-09-30 13F ECOLAB COM 278865100 408,638 -530,000 -56.46 40,358 -49.53 0.1160
2013-08-14 2013-06-30 13F ECOLAB COM 278865100 938,638 555,011 144.67 79,963 159.96 0.2465
2013-07-12 2013-03-31 13F/A-1 ECOLAB COM 278865100 383,627 383,627 30,760 0.1016
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.