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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
NCM
576
Noesis Capital Mangement
Florida
$13.9M
GH
577
GAM Holding
Switzerland
$13.7M
LNWTC
578
Laird Norton Wetherby Trust Company
Washington
$13.7M
RB
579
Rodgers Brothers
Pennsylvania
$13.7M
VA
580
Vident Advisory
Georgia
$13.6M
CL
581
Choreo LLC
Illinois
$13.6M
TA
582
Tectonic Advisors
Texas
$13.5M
GIM
583
Goelzer Investment Management
Indiana
$13.5M
Jane Street
584
Jane Street
New York
$13.4M
NAAA
585
New Age Alpha Advisors
New York
$13.4M
LOAMS
586
Lombard Odier Asset Management (Switzerland)
Switzerland
$13.4M
BF
587
BOK Financial
Oklahoma
$13.4M
ASC
588
Atalanta Sosnoff Capital
New York
$13.4M
LSERS
589
Louisiana State Employees Retirement System
Louisiana
$13.3M
CM
590
Caption Management
Oklahoma
$13.3M
GIBU
591
Gulf International Bank (UK)
United Kingdom
$13.3M
BFG
592
Bleakley Financial Group
New Jersey
$13.3M
BCWM
593
Bartlett & Co Wealth Management
Ohio
$13.2M
MSRPS
594
Maryland State Retirement & Pension System
Maryland
$13.2M
AAIM
595
American Assets Investment Management
California
$13.2M
CK
596
Cohen Klingenstein
New York
$13.1M
BHCM
597
Brevan Howard Capital Management
Jersey
$13.1M
WC
598
Woodstock Corp
Massachusetts
$13M
MCM
599
Monarch Capital Management
Indiana
$13M
CIG
600
Cullen Investment Group
Louisiana
$13M