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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
CII
3701
Capital International Inc
California
P
3702
Pitcairn
Pennsylvania
TCWM
3703
Total Clarity Wealth Management
Illinois
TAP
3704
Tounjian Advisory Partners
Florida
AAI
3705
American Assets Inc
California
AA
3706
ABC Arbitrage
France
FAM
3707
Fairtree Asset Management
South Africa
OAM
3708
Oxford Asset Management
United Kingdom
SM
3709
Stonegate Management
Illinois
WIM
3710
Waverton Investment Management
United Kingdom
AIM
3711
Aigen Investment Management
New York
IPW
3712
Impact Partnership Wealth
Georgia
MF
3713
Magnetar Financial
Illinois
SC
3714
Saiph Capital
New Jersey
CCM
3715
Crabel Capital Management
California
SRL
3716
Scientech Research LLC
New Jersey
RCA
3717
Roberts Capital Advisors
Colorado
SMH
3718
Sanders Morris Harris
Texas
CWM
3719
Compass Wealth Management
Connecticut
MPCL
3720
My Personal CFO LLC
Washington
BBA
3721
Baader Bank Aktiengesellschaft
Germany
CGPCS
3722
Capital Group Private Client Services
California
DA
3723
Denali Advisors
California
RW
3724
Rede Wealth
Virginia
CPRC
3725
Consolidated Portfolio Review Corp
New York