OGN Organon & Co.
Organon & Co. (OGN) Institutional Ownership
What the institutions did with OGN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| FIL Ltd | 10.5M | 25.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 4.6M | 11.3% |
| UBS Group AG | 4.5M | 10.8% |
| DIMENSIONAL FUND ADVISORS LP | 3.3M | 7.9% |
| Bank of New York Mellon Corp | 2.2M | 5.3% |
| FMR LLC | 1.9M | 4.6% |
| Squarepoint Ops LLC | 1.4M | 3.3% |
| PRINCIPAL FINANCIAL GROUP INC | 1.2M | 3.0% |
| Public Sector Pension Investment Board | 893.3K | 2.2% |
| PRIVATE MANAGEMENT GROUP INC | 739.0K | 1.8% |
| TOKIO MARINE ASSET MANAGEMENT CO LTD | 704.1K | 1.7% |
| PICTON MAHONEY ASSET MANAGEMENT | 550.0K | 1.3% |
| Alberta Investment Management Corp | 550.0K | 1.3% |
| New York Life Investment Management LLC | 524.4K | 1.3% |
| RHUMBLINE ADVISERS | 481.0K | 1.2% |
| Amundi | 446.1K | 1.1% |
| First Trust Capital Management L.P. | 402.0K | 1.0% |
| Nuveen, LLC | 339.3K | 0.8% |
| ING GROEP NV | 335.0K | 0.8% |
| HARBOR CAPITAL ADVISORS, INC. | 247.5K | 0.6% |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | 231.7K | 0.6% |
| 180 WEALTH ADVISORS, LLC | 223.9K | 0.5% |
| CITIGROUP INC | 192.5K | 0.5% |
| Creative Planning | 176.7K | 0.4% |
| Thrivent Financial for Lutherans | 167.0K | 0.4% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FIL Ltd | New | 0 | 10.5M | +10.5M |
| LSV ASSET MANAGEMENT | Reduced | 3.7M | 147.1K | -3.6M |
| PRIVATE MANAGEMENT GROUP INC | Reduced | 3.7M | 739.0K | -3.0M |
| Squarepoint Ops LLC | Increased | 390.2K | 1.4M | +988.7K |
| FMR LLC | Increased | 1.2M | 1.9M | +717.5K |
| UBS Group AG | Reduced | 4.9M | 4.5M | -405.6K |
| Amundi | Increased | 73.0K | 446.1K | +373.1K |
| ING GROEP NV | New | 0 | 335.0K | +335.0K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | Reduced | 315.9K | 56.9K | -259.0K |
| CITIGROUP INC | Reduced | 392.3K | 192.5K | -199.8K |
| M&G PLC | Sold Out | 184.0K | 0 | -184.0K |
| Howard Capital Management Inc. | Sold Out | 178.9K | 0 | -178.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 4.8M | 4.6M | -173.3K |
| Nuveen, LLC | Reduced | 486.4K | 339.3K | -147.1K |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | Reduced | 187.3K | 61.9K | -125.4K |
| SIMPLEX TRADING, LLC | Reduced | 145.4K | 31.8K | -113.6K |
| BARCLAYS PLC | Reduced | 107.0K | 6.9K | -100.1K |
| Alberta Investment Management Corp | Increased | 450.0K | 550.0K | +100.0K |
| PROFUND ADVISORS LLC | Increased | 25.8K | 119.1K | +93.2K |
| Bank of New York Mellon Corp | Reduced | 2.3M | 2.2M | -85.0K |
| Friedenthal Financial | Sold Out | 84.7K | 0 | -84.7K |
| NATIXIS | New | 0 | 73.8K | +73.8K |
| Douglas Lane & Associates, LLC | Reduced | 180.7K | 108.1K | -72.6K |
| WOLVERINE ASSET MANAGEMENT LLC | Reduced | 207.9K | 137.4K | -70.6K |
| SummerHaven Investment Management, LLC | Sold Out | 67.2K | 0 | -67.2K |
| VIRGINIA RETIREMENT SYSTEMS ET Al | Sold Out | 56.9K | 0 | -56.9K |
| State of Alaska, Department of Revenue | Reduced | 86.5K | 44.1K | -42.4K |
| HARBOR CAPITAL ADVISORS, INC. | Increased | 214.6K | 247.5K | +32.9K |
| SUMMIT SECURITIES GROUP LLC | New | 0 | 30.2K | +30.2K |
| SEI INVESTMENTS CO | Reduced | 118.5K | 92.7K | -25.8K |
| BANK OF MONTREAL /CAN/ | Increased | 38.4K | 64.2K | +25.7K |
| Provenance Wealth Advisors, LLC | Reduced | 25.8K | 175 | -25.6K |
| PICTON MAHONEY ASSET MANAGEMENT | Reduced | 575.0K | 550.0K | -25.0K |
| Versor Investments LP | Increased | 87.6K | 110.8K | +23.1K |
| BFSG, LLC | Reduced | 29.1K | 6.9K | -22.1K |
| New York Life Investment Management LLC | Increased | 503.1K | 524.4K | +21.3K |
| IFP Advisors, Inc | Reduced | 22.1K | 1.1K | -21.0K |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 1.3M | 1.2M | -20.6K |
| Maryland State Retirement & Pension System | Increased | 50.2K | 70.3K | +20.1K |
| Crossmark Global Holdings, Inc. | Increased | 84.4K | 102.7K | +18.3K |
| Bayforest Capital Ltd | Increased | 869 | 18.8K | +18.0K |
| Transmarket Holdings LP | New | 0 | 18.0K | +18.0K |
| True Freedom Investing, LLC | New | 0 | 16.9K | +16.9K |
| HERITAGE INVESTORS MANAGEMENT CORP | Reduced | 42.2K | 26.0K | -16.3K |
| RHUMBLINE ADVISERS | Reduced | 496.6K | 481.0K | -15.6K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | Increased | 97.4K | 112.4K | +15.1K |
| Vise Technologies, Inc. | Increased | 15.0K | 29.6K | +14.6K |
| EVERETT HARRIS & CO /CA/ | Sold Out | 13.9K | 0 | -13.9K |
| Cambridge Investment Research Advisors, Inc. | Reduced | 26.0K | 12.2K | -13.9K |
| DAVENPORT & Co LLC | New | 0 | 12.6K | +12.6K |
| Connor, Clark & Lunn Investment Management Ltd. | New | 0 | 12.5K | +12.5K |
| DEUTSCHE BANK AG\ | Increased | 56.9K | 68.4K | +11.6K |
| Krilogy Financial LLC | Sold Out | 11.5K | 0 | -11.5K |
| First Trust Capital Management L.P. | Increased | 390.9K | 402.0K | +11.1K |
| Belvedere Trading LLC | New | 0 | 10.6K | +10.6K |
| Ethic Inc. | New | 0 | 10.3K | +10.3K |
| LPL Financial LLC | Reduced | 132.2K | 121.9K | -10.2K |
| Merit Financial Group, LLC | Sold Out | 10.0K | 0 | -10.0K |
| Public Sector Pension Investment Board | Reduced | 902.2K | 893.3K | -8.9K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 3.3M | 3.3M | -8.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.