Organon & Co
627 hedge funds and large institutions have $2.91B invested in Organon & Co in 2026 Q2 according to their latest regulatory filings, with 121 funds opening new positions, 117 increasing their positions, 190 reducing their positions, and 90 closing their positions.
500% more funds holding in top 10
Funds holding in top 10: 1 → 6 (+5)
143% more capital invested
Capital invested by funds: $1.2B → $2.91B (+$1.71B)
34% more first-time investments, than exits
New positions opened: 121 | Existing positions closed: 90
5.88% more ownership
Funds ownership: 76.7% → 82.58% (+5.9%)
3% more funds holding
Funds holding: 607 → 627 (+20)
19% less call options, than puts
Call options by funds: $61.8M | Put options by funds: $75.9M
38% less repeat investments, than reductions
Existing positions increased: 117 | Existing positions reduced: 190
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
627 of the 8,279 institutional investors tracked by Wall St. Rank reported a position in Organon & Co (OGN) for Q2 2026, worth a combined $2.91B — up 143% from $1.2B a quarter earlier.
Buyers outnumbered sellers: 121 funds opened new OGN positions and 90 closed out — a net gain of 31 holders — while 117 added to existing stakes and 190 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.
- 627 institutional investors held Organon & Co (OGN) as of Q2 2026, up from 607 in Q1 2026.
- Funds reported $2.91B of Organon & Co stock for Q2 2026, up 143% quarter-over-quarter.
- 121 funds opened new Organon & Co positions in Q2 2026 and 90 closed out, a net change of +31 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.