3,606 hedge funds and large institutions have $207B invested in Merck in 2025 Q4 according to their latest regulatory filings, with 519 funds opening new positions, 1,366 increasing their positions, 1,390 reducing their positions, and 130 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: 3,2923,606 (+314)

3.2% more ownership

Funds ownership: 76.14%79.33% (+3.2%)

2% less repeat investments, than reductions

Existing positions increased: 1,366 | Existing positions reduced: 1,390

Holders
3,606
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
Name Holding Trade Value Shares
Change
Change in
Stake
ZP
3651
Zimmer Partners
New York
IMC Chicago
3652
IMC Chicago
Illinois
OQS
3653
Occudo Quantitative Strategies
Florida
GA
3654
GraniteShares Advisors
New York
LAM
3655
LECAP Asset Management
United Kingdom
MTIM
3656
Marathon Trading Investment Management
Pennsylvania
Blackstone Inc
3657
Blackstone Inc
New York
QC
3658
Quadrature Capital
United Kingdom
CII
3659
Capital International Inc
California
P
3660
Pitcairn
Pennsylvania
TCWM
3661
Total Clarity Wealth Management
Illinois
TAP
3662
Tounjian Advisory Partners
Florida
AAI
3663
American Assets Inc
California
AA
3664
ABC Arbitrage
France
FAM
3665
Fairtree Asset Management
South Africa
OAM
3666
Oxford Asset Management
United Kingdom
SM
3667
Stonegate Management
Illinois
WIM
3668
Waverton Investment Management
United Kingdom
AIM
3669
Aigen Investment Management
New York
IPW
3670
Impact Partnership Wealth
Georgia
MF
3671
Magnetar Financial
Illinois
SC
3672
Saiph Capital
New Jersey
CCM
3673
Crabel Capital Management
California
SRL
3674
Scientech Research LLC
New Jersey
RCA
3675
Roberts Capital Advisors
Colorado