Institutional Ownership
Organon & Co
CUSIP 68622V106COMMON STOCKOGNQ1 2026
13D / 13G Filings
14
Schedule 13D/13G on record
Beneficial Filers
6
Distinct reporting persons
Largest Stake
13.8%
Max % of class reported
Institutional Holders
594
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
14 filings · latest Oct 30, 2025
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Oct 30, 2025 | The Vanguard Group | 13G/A | 13.8% | 35.93M | SEC |
| 2 | Apr 30, 2025 | Blackrock, Inc. | 13G/A | 11.9% | 30.66M | SEC |
| 3 | Feb 13, 2024 | Vanguard Group Inc | 13G/A | 12.0% | 30.60M | SEC |
| 4 | Feb 5, 2024 | Mawer Investment Management Ltd. | 13G/A | — | — | SEC |
| 5 | Jan 25, 2024 | State Street Corp | 13G/A | 3.7% | — | SEC |
| 6 | Jan 23, 2024 | Blackrock Inc. | 13G/A | 13.1% | 33.52M | SEC |
| 7 | Nov 7, 2023 | Blackrock Inc. | 13G/A | 12.7% | 32.43M | SEC |
| 8 | Feb 13, 2023 | Mawer Investment Management Ltd. | 13G | 5.4% | 13.72M | SEC |
| 9 | Feb 10, 2023 | State Street Corp | 13G | 5.1% | — | SEC |
| 10 | Feb 9, 2023 | Vanguard Group Inc | 13G/A | 12.4% | 31.47M | SEC |
4 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Organon & Co.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 31.72M | $189.98M |
| 2 | State Street Corp | 9.96M | $59.64M |
| 3 | Millennium Management LLC | 6.78M | $40.62M |
| 4 | Kahn Brothers Group Inc | 5.54M | $33.17M |
| 5 | Canada Pension Plan Investment Board | 5.01M | $30.02M |
| 6 | Geode Capital Management, LLC | 4.76M | $28.52M |
| 7 | Private Management Group Inc | 4.37M | $26.20M |
| 8 | Think Investments LP | 4.00M | $23.96M |
| 9 | Ubs Group AG | 3.47M | $20.79M |
| 10 | Aqr Capital Management LLC | 3.45M | $20.19M |