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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
IAG
3251
Investment Advisory Group
Massachusetts
$226K
AI
3252
Atom Investors
Texas
$226K
SIG
3253
Spinnaker Investment Group
California
$226K
CIM
3254
Capital Investment Management
Missouri
$226K
OWA
3255
ORBA Wealth Advisors
Illinois
$225K
CA
3256
Clune & Associates
Illinois
$225K
AWA
3257
Argos Wealth Advisors
California
$225K
PCI
3258
Planning Center Inc
Illinois
$224K
LFP
3259
Leeward Financial Partners
Washington
$224K
PA
3260
Planning Alternatives
Michigan
$224K
GWM
3261
GK Wealth Management
Nevada
$224K
SHA
3262
Seneca House Advisors
Virginia
$223K
MWA
3263
Muirfield Wealth Advisors
North Carolina
$223K
WFMPM
3264
Woodley Farra Manion Portfolio Management
Indiana
$223K
FA
3265
Fagan Associates
New York
$223K
AWP
3266
Avid Wealth Partners
Texas
$223K
AIA
3267
Accelerate Investment Advisors
California
$222K
PC
3268
Promethos Capital
Massachusetts
$221K
ACM
3269
American Capital Management
New York
$221K
WTFG
3270
Wood Tarver Financial Group
Idaho
$220K
RPA
3271
Redwood Park Advisors
California
$219K
FA
3272
Fortis Advisors
Pennsylvania
$219K
TCG
3273
Transcendent Capital Group
Oklahoma
$219K
GL
3274
Gerber LLC
Ohio
$219K
DCM
3275
Delta Capital Management
New Jersey
$219K