Ecolab ECL
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: −$98.31M (8 inflow days, 12 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 33.1% of shares outstanding.
Largest holders
By investor type
Reported short interest has risen from 1.10% to 1.73% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Deka Investment GmbH | Mutual Fund | 2026/Q3 | +575,694 | 0.3% |
| Sustainable Growth Advisers, LP | Mutual Fund | 2026/Q3 | +245,263 | 0.4% |
| J.P. Morgan Asset Management, Inc. | Mutual Fund | 2026/Q3 | +2,709,870 | 3.9% |
| Citadel Advisors LLC | Hedge Fund | 2026/Q3 | +890,039 | 0.4% |
| Winslow Capital Management, LLC | Mutual Fund | 2026/Q3 | +729,628 | 0.4% |
| Balyasny Asset Management L.P. | Hedge Fund | 2026/Q3 | +701,627 | 0.3% |
| Charles Schwab Investment Management | Mutual Fund | 2026/Q3 | +668,417 | 0.8% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +548,061 | 4.2% |
| JPMorgan Chase & Co. | Public Company | 2026/Q3 | +455,818 | 1.3% |
| Woodline Partners LP | Hedge Fund | 2026/Q3 | +368,552 | 0.1% |
| SEI Investments Company | Mutual Fund | 2026/Q3 | +357,921 | 0.3% |
| SG Americas Securities, LLC | Private Company | 2026/Q3 | +321,409 | 0.2% |
| Select Equity Group, L.P. | Hedge Fund | 2026/Q3 | +276,003 | 0.1% |
| BlackRock | Mutual Fund | 2026/Q3 | +244,267 | 8.2% |
| Dimensional Fund Advisors | Mutual Fund | 2026/Q3 | +215,859 | 0.4% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 29 Sep 2026 | Lionel Nowell | Independent Director | Other Acquisition | +131 | – | 6,922 |
| 29 Sep 2026 | David MacLennan | Lead Independent Director | Other Acquisition | +177 | $276.36 | 8,168 |
| 29 Sep 2026 | Michael Larson | Independent Director | Other Acquisition | +131 | – | 10,982 |
| 29 Sep 2026 | John Zillmer | Independent Director | Other Acquisition | +131 | – | 16,566 |
| 29 Sep 2026 | Shari Ballard | Independent Director | Other Acquisition | +262 | $276.36 | 9,973 |
| 29 Sep 2026 | Eric Green | Independent Director | Other Acquisition | +275 | $276.36 | 4,544 |
| 29 Sep 2026 | Michel Dimitrios Doukeris | Independent Director | Other Acquisition | +131 | – | 840 |
| 29 Sep 2026 | Julie Patenaude | Other Acquisition | +131 | – | 604 | |
| 29 Sep 2026 | Judson Althoff | Independent Director | Other Acquisition | +131 | – | 1,407 |
| 29 Sep 2026 | Tracy McKibben | Independent Director | Other Acquisition | +131 | – | 8,415 |
| 29 Sep 2026 | Suzanne Vautrinot | Independent Director | Other Acquisition | +131 | – | 9,200 |
| 29 Sep 2026 | Marion Gross | Independent Director | Other Acquisition | +131 | – | 730 |
| 10 Sep 2026 | Eric Green | Independent Director | Open Market Acquisition | +3,690 | $277.29 | 3,690 |
| 17 Aug 2026 | Christophe Beck | Chairperson & CEO | Open Market Disposition | -17,862 | $280.14 | 74,688 |
| 10 Aug 2026 | Gregory Russell Cook | Co-Chief Operating Officer of Global Businesses | Open Market Disposition | -4,567 | $285.13 | 15,298 |
| 6 Aug 2026 | Bryce Mewhorter | Senior VP, Corporate Controller & Principal Accounting Officer | Initial Statement of Beneficial | +0 | – | 2,948 |
| 2 Aug 2026 | Jennifer Bradway | Former Senior Vice President of Finance - Global Institutional | Derivative Exercise and Sale | -2,944 | $278.79 | 9,603 |
| 2 Aug 2026 | Jennifer Bradway | Former Senior Vice President of Finance - Global Institutional | Derivative Exercise and Retained | +3,512 | – | 9,603 |
| 29 Jul 2026 | Scott Kirkland | Chief Financial Officer | Derivative Exercise and Sale | -3,357 | $276.96 | 19,002 |
| 29 Jul 2026 | Scott Kirkland | Chief Financial Officer | Derivative Exercise and Retained | +615 | $117.73 | 19,002 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 4,850,156 | 1.7% | 4.1 |
| 30 Sep 2026 | 5,367,992 | 1.9% | 4.4 |
| 15 Sep 2026 | 5,259,375 | 1.9% | 4.5 |
| 31 Aug 2026 | 4,734,079 | 1.7% | 2.8 |
| 14 Aug 2026 | 3,477,715 | 1.2% | 3.2 |
| 31 Jul 2026 | 3,096,775 | 1.1% | 2.3 |
No comments yet — be the first to weigh in on ECL.
Sign in to join the discussion.