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Organon & Co
OGN

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.

New
Increased
Maintained
Reduced
Closed

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

Holders
627
Holders Change
+20
Holders Change %
+3.29%
% of All Funds
7.57%
Holding in Top 10
6
Holding in Top 10 Change
+5
Holding in Top 10 Change %
+500%
% of All Funds
0.07%
New
121
Increased
117
Reduced
190
Closed
90
Calls
$61.8M
Puts
$75.9M
Net Calls
-$14.1M
Net Calls Change
-$10.9M

Top Buyers

Rank Fund Capital Flow
1
PCM
Pentwater Capital Management
Florida
+$216M
2
Man Group
Man Group
United Kingdom
+$50M
3
AllianceBernstein
AllianceBernstein
Tennessee
+$48.2M
4
AA
AQR Arbitrage
Connecticut
+$46.4M
5
Goldman Sachs
Goldman Sachs
New York
+$43M

Top Sellers

Rank Fund Capital Flow
1
Vanguard Portfolio Management
Vanguard Portfolio Management
Pennsylvania
-$80.3M
2
LSV Asset Management
LSV Asset Management
Illinois
-$42.1M
3
Millennium Management
Millennium Management
New York
-$39.9M
4
Two Sigma Investments
Two Sigma Investments
New York
-$34.6M
5
KBG
Kahn Brothers Group
New York
-$34.3M
Name Holding Trade Value Shares
Change 		Change in
Stake
OSNBOA
401
Old Second National Bank of Aurora
Illinois
$2.71K – – –
OCM
402
Osbon Capital Management
Massachusetts
$2.71K – – –
TCOT
403
Trust Company of Toledo
Ohio
$2.69K -$72 -6 -3%
APW
404
Aventura Private Wealth
Florida
$2.67K – – –
JWA
405
JFS Wealth Advisors
Pennsylvania
$2.65K +$263 +22 +13%
SWAG
406
Spectrum Wealth Advisory Group
California
$2.59K +$2.28K +191 New
CIA
407
Cape Investment Advisory
Georgia
$2.58K +$2.27K +190 New
WIM
408
Westside Investment Management
California
$2.57K – – –
CA
409
CoreCap Advisors
Michigan
$2.55K -$419 -35 -16%
TCM
410
TD Capital Management
Tennessee
$2.54K -$120 -10 -5%
VR
411
Vision Retirement
New Jersey
$2.52K – – –
KG
412
Kilter Group
New York
$2.5K – – –
CWM
413
Cranbrook Wealth Management
Michigan
$2.29K – – –
FCAS
414
First Command Advisory Services
Texas
$2.25K -$813 -68 -29%
GFA
415
Godfrey Financial Associates
New York
$2.21K – – –
NECFA
416
New England Capital Financial Advisors
Connecticut
$2.19K – – –
CFO
417
CVA Family Office
Colorado
$2.18K -$96 -8 -5%
Mitsubishi UFJ Asset Management
418
Mitsubishi UFJ Asset Management
Japan
$2.18K – – –
SWA
419
SOA Wealth Advisors
New York
$2.16K -$239 -20 -11%
JFA
420
JNBA Financial Advisors
Minnesota
$2.15K – – –
HHCP
421
Hilton Head Capital Partners
South Carolina
$2.04K – – –
EDRH
422
Edmond de Rothschild Holding
Switzerland
$2.04K -$323 -27 -15%
NRG
423
Nemes Rush Group
Michigan
$2K – – –
BG
424
Bollard Group
Massachusetts
$2K -$550 -46 -25%
HBW
425
Hazlett, Burt & Watson
West Virginia
$2K -$60 -5 -3%
15 16
17
18 19

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.