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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
PCA
801
Pallas Capital Advisors
Massachusetts
$7.5M
GFM
802
GF Fund Management
China
$7.48M
CIM
803
Contravisory Investment Management
Massachusetts
$7.46M
HFS
804
Hantz Financial Services
Michigan
$7.42M
LA
805
Lifeworks Advisors
Michigan
$7.42M
ECM
806
Everence Capital Management
Indiana
$7.39M
TCOK
807
Trust Company of Kansas
Kansas
$7.38M
OIMU
808
Osmosis Investment Management UK
United Kingdom
$7.33M
BE
809
Bonness Enterprises
District of Columbia
$7.32M
IPW
810
Inlet Private Wealth
Florida
$7.31M
RFM
811
Royal Fund Management
Florida
$7.29M
FNFDCM
812
Folger Nolan Fleming Douglas Capital Management
District of Columbia
$7.27M
CPC
813
Consolidated Planning Corp
Georgia
$7.2M
GXJ
814
Global X Japan
Japan
$7.15M
PIM
815
Plato Investment Management
Australia
$7.14M
RPC
816
Rossmore Private Capital
Connecticut
$7.12M
MHIC
817
Marble Harbor Investment Counsel
Massachusetts
$7.11M
SAM
818
Securian Asset Management
Minnesota
$7.1M
VFA
819
Valeo Financial Advisors
Indiana
$7.09M
VCM
820
Voleon Capital Management
California
$7.09M
NEAM
821
New England Asset Management
Connecticut
$7.09M
FSA
822
Financial Security Advisor
Virginia
$7.06M
MSA
823
MUFG Securities Americas
New York
$7.04M
GIA
824
Guyasuta Investment Advisors
Pennsylvania
$7.04M
AIM
825
Anchor Investment Management
South Carolina
$7.02M