ECOLAB INC (ECL) Institutional Ownership Changes & 13F Activity

ECOLAB INC (ECL) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Mairs & Power Growth Fund, Sequoia Financial Advisors, Jensen Investment Management, and Cullen Value Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2017Wedgewood PartnersSell-725,650$750
Q1 2017Renaissance Technologies LLCBuy334,200473,822$59,389
Q1 2017Mairs & Power Growth FundBuy165,7252,728,455$341,985
Q1 2017Parnassus Endeavor FundBuy75,000300,000$37,602
Q1 2017Eagle Capital ManagementBuy33,2478,782,215$1,100,763
Q1 2017Cantillon Capital ManagementSell-22,0572,980,394$373,563
Q1 2017Eagle Capital ManagementSell-4,64622,665$2,841
Q1 2017Jensen Investment ManagementSell-4,3702,609,395$327,062
Q4 2016Eagle Capital ManagementSell-245,1758,748,968$1,025,554
Q4 2016Parnassus Endeavor FundBuy107,500225,000$26,375
Q4 2016Cantillon Capital ManagementSell-99,4003,002,451$351,948
Q4 2016Mairs & Power Growth FundBuy60,7522,562,730$300,403
Q4 2016Meritage GroupBuy33,43433,434$3,919
Q4 2016Jensen Investment ManagementSell-5,8852,613,765$306,386
Q4 2016Eagle Capital ManagementBuy18327,311$3,201
Q4 2016Wedgewood PartnersBuy725,722$670
Q3 2016Eagle Capital ManagementSell-221,1598,994,143$1,094,767
Q3 2016Parnassus Endeavor FundBuy81,800117,500$14,302
Q3 2016Renaissance Technologies LLCBuy20,400139,622$16,995
Q3 2016Jensen Investment ManagementSell-7,5262,619,650$318,864
Q3 2016Cantillon Capital ManagementSell-3,3003,101,851$377,558
Q3 2016Mairs & Power Growth FundSell-2,1652,501,978$304,541
Q3 2016Eagle Capital ManagementBuy73927,128$3,302
Q3 2016Wedgewood PartnersSell-215,650$687
Q2 2016Eagle Capital ManagementSell-138,8509,215,302$1,092,935
Q2 2016Cantillon Capital ManagementSell-81,6003,105,151$368,271
Q2 2016Mairs & Power Growth FundBuy27,0292,504,143$296,991
Q2 2016Jensen Investment ManagementSell-18,8152,627,176$311,583
Q2 2016Eagle Capital ManagementSell-40826,389$3,130
Q2 2016Wedgewood PartnersBuy215,671$672

Frequently asked questions about ECL activity

  • Which institutional owners are buying ECL?

    Institutional owners buying ECL include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ECL activity?

    "Buy" means an investor increased their reported position in ECL compared to the prior reporting period. This reflects growing exposure to ECOLAB INC (ECL) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ECL increasing?

    Institutional interest in ECL can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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