Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionArizona State Retirement System
Latest Disclosed Ownership69,857 shares
Latest Disclosed Value $ 18,583,359
Arizona State Retirement System reports 3.46% decrease in ownership of ECL / Ecolab Inc.

On May 1, 2026 - Arizona State Retirement System filed a 13F-HR form disclosing ownership of 69,857 shares of Ecolab Inc. (MX:ECL) valued at $18,583,359 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 72,358 shares of Ecolab Inc.. This represents a change in shares of -3.46% 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)
2026-05-01 2026-03-31 13F ECOLAB COM 278865100 69,857 -2,501 -3.46 18,583 -2.17 0.1087
2026-01-28 2025-12-31 13F ECOLAB COM 278865100 72,358 -2,202 -2.95 18,995 -6.97 0.1033
2025-11-03 2025-09-30 13F ECOLAB COM 278865100 74,560 -65 -0.09 20,419 1.56 0.1088
2025-08-13 2025-06-30 13F ECOLAB COM 278865100 74,625 -164 -0.22 20,107 6.04 0.1159
2025-05-01 2025-03-31 13F ECOLAB COM 278865100 74,789 1,271 1.73 18,961 10.07 0.1207
2025-02-06 2024-12-31 13F ECOLAB COM 278865100 73,518 -173 -0.23 17,227 -8.45 0.1053
2024-11-12 2024-09-30 13F ECOLAB COM 278865100 73,691 -910 -1.22 18,816 5.97 0.1187
2024-08-05 2024-06-30 13F ECOLAB COM 278865100 74,601 958 1.30 17,755 4.42 0.1185
2024-05-07 2024-03-31 13F ECOLAB COM 278865100 73,643 1,469 2.04 17,004 18.78 0.1176
2024-01-24 2023-12-31 13F ECOLAB COM 278865100 72,174 -358 -0.49 14,316 16.51 0.1086
2023-11-07 2023-09-30 13F ECOLAB COM 278865100 72,532 -702 -0.96 12,287 -10.14 0.1044
2023-08-01 2023-06-30 13F ECOLAB COM 278865100 73,234 3,241 4.63 13,672 18.01 0.1110
2023-04-27 2023-03-31 13F ECOLAB COM 278865100 69,993 106 0.15 11,586 13.89 0.1040
2023-02-08 2022-12-31 13F ECOLAB COM 278865100 69,887 3 0.00 10,173 0.78 0.0982
2022-11-07 2022-09-30 13F ECOLAB COM 278865100 69,884 -918 -1.30 10,093 -7.29 0.1044
2022-07-28 2022-06-30 13F ECOLAB COM 278865100 70,802 32 0.05 10,887 -12.87 0.1057
2022-05-04 2022-03-31 13F ECOLAB COM 278865100 70,770 252 0.36 12,495 -24.47 0.1007
2022-02-04 2021-12-31 13F ECOLAB COM 278865100 70,518 -1,245 -1.73 16,543 10.50 0.1260
2021-11-12 2021-09-30 13F ECOLAB COM 278865100 71,763 -214 -0.30 14,971 0.98 0.1222
2021-08-02 2021-06-30 13F ECOLAB COM 278865100 71,977 -419 -0.58 14,825 -4.34 0.1206
2021-05-06 2021-03-31 13F ECOLAB COM 278865100 72,396 -11,523 -13.73 15,498 -14.64 0.1354
2021-01-28 2020-12-31 13F ECOLAB COM 278865100 83,919 6,368 8.21 18,157 17.16 0.1647
2020-11-05 2020-09-30 13F ECOLAB COM 278865100 77,551 17,651 29.47 15,498 30.05 0.1541
2020-08-04 2020-06-30 13F ECOLAB COM 278865100 59,900 -15,187 -20.23 11,917 1.85 0.1681
2020-05-05 2020-03-31 13F ECOLAB COM 278865100 75,087 8,843 13.35 11,701 -8.47 0.2011
2020-01-27 2019-12-31 13F ECOLAB COM 278865100 66,244 2,323 3.63 12,784 0.99 0.1539
2019-10-31 2019-09-30 13F ECOLAB COM 278865100 63,921 -1,056 -1.63 12,659 -1.33 0.1545
2019-07-25 2019-06-30 13F ECOLAB COM 278865100 64,977 -2,992 -4.40 12,829 6.92 0.1485
2019-04-29 2019-03-31 13F ECOLAB COM 278865100 67,969 -4,799 -6.59 11,999 11.91 0.1427
2019-01-28 2018-12-31 13F ECOLAB COM 278865100 72,768 -4,463 -5.78 10,722 -11.45 0.1379
2018-10-29 2018-09-30 13F ECOLAB COM 278865100 77,231 -598 -0.77 12,108 10.86 0.1143
2018-08-07 2018-06-30 13F ECOLAB COM 278865100 77,829 4,216 5.73 10,922 8.25 0.1098
2018-05-14 2018-03-31 13F ECOLAB COM 278865100 73,613 -1,500 -2.00 10,090 0.11 0.1018
2018-02-09 2017-12-31 13F ECOLAB COM 278865100 75,113 2,228 3.06 10,079 7.52 0.0982
2017-11-14 2017-09-30 13F ECOLAB COM 278865100 72,885 -5,051 -6.48 9,374 -9.39 0.1120
2017-08-02 2017-06-30 13F ECOLAB COM 278865100 77,936 -2,200 -2.75 10,346 3.01 0.1433
2017-05-10 2017-03-31 13F ECOLAB COM 278865100 80,136 200 0.25 10,044 7.19 0.1411
2017-02-10 2016-12-31 13F ECOLAB COM 278865100 79,936 300 0.38 9,370 -3.33 0.1379
2016-11-01 2016-09-30 13F ECOLAB COM 278865100 79,636 -100 -0.13 9,693 2.50 0.1472
2016-08-15 2016-06-30 13F ECOLAB COM 278865100 79,736 -8,700 -9.84 9,457 -4.11 0.1328
2016-05-16 2016-03-31 13F ECOLAB COM 278865100 88,436 600 0.68 9,862 -1.84 0.1284
2016-02-12 2015-12-31 13F ECOLAB COM 278865100 87,836 -19,500 -18.17 10,047 -14.69 0.1337
2015-11-20 2015-09-30 13F ECOLAB COM 278865100 107,336 -32,500 -23.24 11,777 -19.42 0.1652
2015-02-11 2014-12-31 13F ECOLAB COM 278865100 139,836 800 0.58 14,615 -8.46 0.1722
2014-11-21 2014-09-30 13F ECOLAB COM 278865100 139,036 -3,400 -2.39 15,965 0.67 0.1980
2014-08-07 2014-06-30 13F ECOLAB COM 278865100 142,436 900 0.64 15,858 3.76 0.1917
2014-05-19 2014-03-31 13F ECOLAB COM 278865100 141,536 -2,300 -1.60 15,284 1.91 0.1936
2014-02-05 2013-12-31 13F ECOLAB COM 278865100 143,836 -7,800 -5.14 14,997 0.15 0.1845
2013-11-01 2013-09-30 13F ECOLAB COM 278865100 151,636 2,000 1.34 14,975 17.48 0.1918
2013-09-17 2013-06-30 13F ECOLAB COM 278865100 149,636 200 0.13 12,747 6.39 0.1738
2013-09-17 2013-03-31 13F ECOLAB COM 278865100 149,436 149,436 11,981 0.1716
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.