3,728 hedge funds and large institutions have $233B invested in Merck in 2026 Q1 according to their latest regulatory filings, with 310 funds opening new positions, 1,432 increasing their positions, 1,561 reducing their positions, and 123 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: $ → $

3% more funds holding

Funds holding: 3,6343,728 (+94)

8% less repeat investments, than reductions

Existing positions increased: 1,432 | Existing positions reduced: 1,561

1.52% less ownership

Funds ownership: 79.45%77.93% (-1.5%)

Holders
3,728
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
87
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$3.43B
Puts
$2.78B
Net Calls
Net Calls Change

Top Sellers

1 -$997M
2 -$809M
3 -$605M
4
Corient Private Wealth
Corient Private Wealth
Florida
-$602M
5
Millennium Management
Millennium Management
New York
-$558M
Name Holding Trade Value Shares
Change
Change in
Stake
AIP
3751
Arrowpoint Investment Partners
Singapore
SM
3752
Sciencast Management
New Jersey
PFM
3753
Privium Fund Management
Netherlands
KJHP
3754
K.J. Harrison & Partners
Ontario, Canada
PS
3755
Pensionfund Sabic
Netherlands
WAM
3756
Weiss Asset Management
Massachusetts
SCM
3757
Sandler Capital Management
New York
ECM
3758
Element Capital Management
New York
HP
3759
Hikari Power
Japan
CCP
3760
Clarkston Capital Partners
Michigan
DAS
3761
Diversify Advisory Services
Utah
LCM
3762
Laurion Capital Management
New York
LWP
3763
LeClair Wealth Partners
Ohio
AIMCA
3764
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
EFS
3765
Econ Financial Services
Pennsylvania
MCM
3766
Massar Capital Management
Connecticut
PCMU
3767
Paragon Capital Management (Utah)
Utah
JF
3768
Jump Financial
Illinois
CTFG
3769
Capstone Triton Financial Group
Oklahoma
DCP
3770
Diameter Capital Partners
New York
Twin Tree Management
3771
Twin Tree Management
Texas
LF
3772
Lee Financial
Texas
GCM
3773
Graham Capital Management
Connecticut
CCM
3774
Capstone Capital Management
SIM
3775
Sentry Investment Management
Wisconsin