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3,648 hedge funds and large institutions have $207B invested in Merck in 2025 Q4 according to their latest regulatory filings, with 544 funds opening new positions, 1,372 increasing their positions, 1,398 reducing their positions, and 131 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more call options, than puts

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

more capital invested

Capital invested by funds: $ → $

10% more funds holding

Funds holding: 3,3073,648 (+341)

2.9% more ownership

Funds ownership: 76.23%79.13% (+2.9%)

2% less repeat investments, than reductions

Existing positions increased: 1,372 | Existing positions reduced: 1,398

Holders
3,648
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
77
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$3.76B
Puts
$2.62B
Net Calls
Net Calls Change

Top Buyers

1 +$1.05B
2 +$696M
3 +$567M
4
Citadel Advisors
Citadel Advisors
Florida
+$549M
5
Jennison Associates
Jennison Associates
New York
+$522M
Name Holding Trade Value Shares
Change
Change in
Stake
Westfield Capital Management
926
Westfield Capital Management
Massachusetts
$5.64M
KFP
927
KMG Fiduciary Partners
Ohio
$5.64M
PVI
928
Pine Valley Investments
New Jersey
$5.63M
GQG Partners
929
GQG Partners
Florida
$5.63M
WS
930
Wedbush Securities
California
$5.63M
LIM
931
Letson Investment Management
Georgia
$5.62M
SC
932
Searle & Co
Connecticut
$5.6M
EM
933
Excalibur Management
Massachusetts
$5.59M
OAM
934
Occidental Asset Management
California
$5.55M
OIA
935
OneDigital Investment Advisors
Kansas
$5.55M
PTC
936
Philadelphia Trust Company
Pennsylvania
$5.54M
LS
937
Leelyn Smith
Illinois
$5.53M
RMAM
938
Raab & Moskowitz Asset Management
New Jersey
$5.5M
PA
939
Parallel Advisors
California
$5.49M
MPI
940
Mairs & Power Inc
Minnesota
$5.47M
KP
941
Keel Point
Alabama
$5.43M
S
942
SignatureFD
Georgia
$5.41M
MCM
943
Mengis Capital Management
Oregon
$5.38M
SAM
944
Sompo Asset Management
Japan
$5.36M
RWM
945
Rockline Wealth Management
New York
$5.36M
UOTTAIMCU
946
University of Texas/Texas AM Investment Management Co (UTIMCO)
Texas
$5.36M
SCA
947
Sage Capital Advisors
South Dakota
$5.36M
MFG
948
Monte Financial Group
Connecticut
$5.35M
TI
949
tru Independence
Oregon
$5.32M
CA
950
Cullinan Associates
Kentucky
$5.32M