Organon & Co
695 hedge funds and large institutions have $2.07B invested in Organon & Co in 2025 Q2 according to their latest regulatory filings, with 108 funds opening new positions, 176 increasing their positions, 233 reducing their positions, and 124 closing their positions.
59% more call options, than puts
Call options by funds: $32.1M | Put options by funds: $20.2M
3.63% more ownership
Funds ownership: 78.56% → 82.19% (+3.6%)
3% less funds holding
Funds holding: 720 → 695 (-25)
13% less first-time investments, than exits
New positions opened: 108 | Existing positions closed: 124
24% less repeat investments, than reductions
Existing positions increased: 176 | Existing positions reduced: 233
31% less capital invested
Capital invested by funds: $3.01B → $2.07B (-$943M)
75% less funds holding in top 10
Funds holding in top 10: 4 → 1 (-3)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$83.7M |
| 2 |
UBS Group
Zurich,
Switzerland
|
+$43.2M |
| 3 |
Vanguard Group
Malvern,
Pennsylvania
|
+$26.6M |
| 4 |
AQR Capital Management
Greenwich,
Connecticut
|
+$19.4M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$15M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SSM
Sound Shore Management
Greenwich,
Connecticut
|
-$74.1M |
| 2 |
DRZID
DePrince Race & Zollo Inc (DRZ)
Winter Park,
Florida
|
-$69.3M |
| 3 |
HF
HRT Financial
New York
|
-$19.6M |
| 4 |
Verition Fund Management
Greenwich,
Connecticut
|
-$8.06M |
| 5 |
BlackRock
New York
|
-$7.58M |
OGN Hedge Fund Activity: Q2 2025 in Review
695 of the 7,613 institutional investors tracked by Wall St. Rank reported a position in Organon & Co (OGN) for Q2 2025, worth a combined $2.07B — down 31% from $3.01B a quarter earlier.
Sellers outnumbered buyers: 124 funds closed out of OGN and 108 opened new positions — a net loss of 16 holders — while 233 trimmed existing stakes and 176 added.
The largest buyer was Millennium Management, adding an estimated $83.7M. The largest seller was Sound Shore Management, exiting entirely with an estimated $74.1M sold.
- 695 institutional investors held Organon & Co (OGN) as of Q2 2025, down from 720 in Q1 2025.
- Funds reported $2.07B of Organon & Co stock for Q2 2025, down 31% quarter-over-quarter.
- 108 funds opened new Organon & Co positions in Q2 2025 and 124 closed out, a net change of -16 holders.
- The largest Organon & Co buyer in Q2 2025 was Millennium Management, an estimated $83.7M added.
- The largest Organon & Co seller in Q2 2025 was Sound Shore Management, an estimated $74.1M sold.
Based on aggregated 13F filings for Q2 2025.