Organon & Co
633 hedge funds and large institutions have $2.94B invested in Organon & Co in 2026 Q2 according to their latest regulatory filings, with 123 funds opening new positions, 118 increasing their positions, 193 reducing their positions, and 90 closing their positions.
500% more funds holding in top 10
Funds holding in top 10: 1 → 6 (+5)
145% more capital invested
Capital invested by funds: $1.2B → $2.94B (+$1.74B)
37% more first-time investments, than exits
New positions opened: 123 | Existing positions closed: 90
6.51% more ownership
Funds ownership: 76.75% → 83.26% (+6.5%)
4% more funds holding
Funds holding: 608 → 633 (+25)
19% less call options, than puts
Call options by funds: $61.8M | Put options by funds: $75.9M
39% less repeat investments, than reductions
Existing positions increased: 118 | Existing positions reduced: 193
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
PCM
Pentwater Capital Management
Naples,
Florida
|
+$216M |
| 2 |
Man Group
London,
United Kingdom
|
+$50M |
| 3 |
AllianceBernstein
Nashville,
Tennessee
|
+$48.2M |
| 4 |
AA
AQR Arbitrage
Greenwich,
Connecticut
|
+$46.4M |
| 5 |
Goldman Sachs
New York
|
+$43M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Portfolio Management
Malvern,
Pennsylvania
|
-$80.3M |
| 2 |
LSV Asset Management
Chicago,
Illinois
|
-$42.1M |
| 3 |
Millennium Management
New York
|
-$39.9M |
| 4 |
Two Sigma Investments
New York
|
-$34.6M |
| 5 |
KBG
Kahn Brothers Group
New York
|
-$34.3M |
OGN Hedge Fund Activity: Q2 2026 in Review
633 of the 8,318 institutional investors tracked by Wall St. Rank reported a position in Organon & Co (OGN) for Q2 2026, worth a combined $2.94B — up 145% from $1.2B a quarter earlier.
Buyers outnumbered sellers: 123 funds opened new OGN positions and 90 closed out — a net gain of 33 holders — while 118 added to existing stakes and 193 trimmed.
The largest buyer was Pentwater Capital Management, opening a new position worth an estimated $216M. The largest seller was Vanguard Portfolio Management, cutting an estimated $80.3M.
- 633 institutional investors held Organon & Co (OGN) as of Q2 2026, up from 608 in Q1 2026.
- Funds reported $2.94B of Organon & Co stock for Q2 2026, up 145% quarter-over-quarter.
- 123 funds opened new Organon & Co positions in Q2 2026 and 90 closed out, a net change of +33 holders.
- The largest Organon & Co buyer in Q2 2026 was Pentwater Capital Management, an estimated $216M added.
- The largest Organon & Co seller in Q2 2026 was Vanguard Portfolio Management, an estimated $80.3M sold.
Based on aggregated 13F filings for Q2 2026.