Organon & Co
669 hedge funds and large institutions have $2.13B invested in Organon & Co in 2025 Q3 according to their latest regulatory filings, with 65 funds opening new positions, 159 increasing their positions, 233 reducing their positions, and 81 closing their positions.
3% more capital invested
Capital invested by funds: $2.07B → $2.13B (+$60.6M)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
6% less call options, than puts
Call options by funds: $33.2M | Put options by funds: $35.2M
4% less funds holding
Funds holding: 694 → 669 (-25)
5.28% less ownership
Funds ownership: 82.19% → 76.91% (-5.3%)
20% less first-time investments, than exits
New positions opened: 65 | Existing positions closed: 81
32% less repeat investments, than reductions
Existing positions increased: 159 | Existing positions reduced: 233
Top Buyers
Top Sellers
| 1 |
Citadel Advisors
Miami,
Florida
|
-$49.5M |
| 2 |
Millennium Management
New York
|
-$44.8M |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$31.3M |
| 4 |
Nordea Investment Management
Stockholm,
Sweden
|
-$17.8M |
| 5 |
Morgan Stanley
New York
|
-$13.6M |
OGN Hedge Fund Activity: Q3 2025 in Review
669 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Organon & Co (OGN) for Q3 2025, worth a combined $2.13B — up 2.9% from $2.07B a quarter earlier.
Sellers outnumbered buyers: 81 funds closed out of OGN and 65 opened new positions — a net loss of 16 holders — while 233 trimmed existing stakes and 159 added.
The largest buyer was Vanguard Group, adding an estimated $35.8M. The largest seller was Citadel Advisors, cutting an estimated $49.5M.
- 669 institutional investors held Organon & Co (OGN) as of Q3 2025, down from 694 in Q2 2025.
- Funds reported $2.13B of Organon & Co stock for Q3 2025, up 2.9% quarter-over-quarter.
- 65 funds opened new Organon & Co positions in Q3 2025 and 81 closed out, a net change of -16 holders.
- The largest Organon & Co buyer in Q3 2025 was Vanguard Group, an estimated $35.8M added.
- The largest Organon & Co seller in Q3 2025 was Citadel Advisors, an estimated $49.5M sold.
Based on aggregated 13F filings for Q3 2025.