3,272 hedge funds and large institutions have $159B invested in Merck in 2025 Q3 according to their latest regulatory filings, with 190 funds opening new positions, 1,339 increasing their positions, 1,408 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

1% less funds holding

Funds holding: 3,3023,272 (-30)

5% less repeat investments, than reductions

Existing positions increased: 1,339 | Existing positions reduced: 1,408

2.19% less ownership

Funds ownership: 78.17%75.99% (-2.2%)

Holders
3,272
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
46
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$2.83B
Puts
$2.51B
Net Calls
Net Calls Change

Top Sellers

1 -$863M
2 -$579M
3 -$452M
4
BlackRock
BlackRock
New York
-$291M
5
Goldman Sachs
Goldman Sachs
New York
-$283M
Name Holding Trade Value Shares
Change
Change in
Stake
IMCOOI
376
Investment Management Corp of Ontario (IMCO)
Canada
$25.4M
TSW
377
Thompson Siegel & Walmsley
Virginia
$25.4M
PAG
378
Private Advisor Group
New Jersey
$25.2M
AS
379
Aware Super
Australia
$25.1M
BCM
380
Becker Capital Management
Oregon
$25.1M
AIM
381
ARGA Investment Management
Connecticut
$25M
CCMIC
382
Cardinal Capital Management Inc (Canada)
Manitoba, Canada
$24.7M
EI
383
Ethic Inc
New York
$24.4M
MCM
384
MAI Capital Management
Ohio
$24.4M
QPBE
385
Quintet Private Bank (Europe)
Luxembourg
$24.4M
BFS
386
Bradley Foster & Sargent
Connecticut
$24.4M
WTC
387
WhitTier Trust Company
Nevada
$24.3M
HTC
388
Haverford Trust Company
Pennsylvania
$24.3M
EMPI
389
Elo Mutual Pension Insurance
Finland
$24.2M
OPERF
390
Oregon Public Employees Retirement Fund
Oregon
$24M
CFG
391
Citizens Financial Group
Rhode Island
$23.9M
BPA
392
Beacon Pointe Advisors
California
$23.9M
GKIM
393
GW&K Investment Management
Massachusetts
$23.8M
VI
394
Vestcor Inc
New Brunswick, Canada
$23.6M
FMI
395
Factory Mutual Insurance
Massachusetts
$23.6M
Rafferty Asset Management
396
Rafferty Asset Management
New York
$23.5M
CAM
397
Cresset Asset Management
Illinois
$23.4M
VCM
398
Voleon Capital Management
California
$23.3M
OAC
399
OMERS Administration Corp
Ontario, Canada
$23.3M
KAS
400
Kestra Advisory Services
Texas
$23.3M