Organon & Co (OGN)
Who owns Organon & Co (OGN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.4% of the shares are freely tradable; institutional investors hold 77.9%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 12.08 | 31,717,028 | +2.4 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 8.32 | 21,846,036 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.47 | 11,737,018 | +0.0 | 03/31/2026 |
| State Street Corp | 3.79 | 9,956,774 | +3.7 | 03/31/2026 |
| LSV Asset Management | 2.76 | 7,259,730 | -2.8 | 03/31/2026 |
| Millennium Management LLC | 2.58 | 6,781,535 | +1,371.2 | 03/31/2026 |
| Kahn Brothers & CO Inc /DE/ | 2.11 | 5,536,993 | +52.6 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.09 | 16,003,096 | +0.0 | 07/30/2026 |
| Vanguard Morn Total Stk Mkt Idx Investor | 3.17 | 8,334,485 | +0.8 | 06/30/2026 |
| Vanguard Small Cap Index | 2.29 | 6,025,121 | +0.5 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: August 3, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.