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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
Holocene Advisors
201
Holocene Advisors
New York
$93.2M
Jones Financial Companies
202
Jones Financial Companies
Missouri
$92.6M
RAM
203
Resona Asset Management
Japan
$91.9M
LF
204
Lansforsakringar Fondforvaltning
Sweden
$91.4M
Capital International Investors
205
Capital International Investors
California
$90.6M
State of New Jersey Common Pension Fund D
206
State of New Jersey Common Pension Fund D
New Jersey
$90.5M
William Blair & Company
207
William Blair & Company
Illinois
$87.8M
KeyBank National Association
208
KeyBank National Association
Ohio
$87.4M
CLOS
209
Compagnie Lombard Odier SCmA
Switzerland
$87.1M
Osaic Holdings
210
Osaic Holdings
Arizona
$85.2M
FAF
211
Fjarde Ap-fonden
Sweden
$83.9M
FAF
212
Första AP-fonden
Sweden
$83.4M
SPS
213
Susquehanna Portfolio Strategies
Pennsylvania
$83.3M
IG
214
ING Group
Netherlands
$82.8M
TG
215
TCW Group
California
$82.5M
Teacher Retirement System of Texas
216
Teacher Retirement System of Texas
Texas
$81.9M
DCM
217
Donaldson Capital Management
Indiana
$81.9M
PTPFOECYE
218
PBU - The Pension Fund of Early Childhood & Youth Educators
$81.7M
Mercer Global Advisors
219
Mercer Global Advisors
Colorado
$81.6M
VPC
220
Vestal Point Capital
New York
$81.6M
GC
221
Guggenheim Capital
Illinois
$81.4M
MT
222
Midwest Trust
Kansas
$80.7M
BG
223
Bahl & Gaynor
Ohio
$80.5M
FWCM
224
Ferguson Wellman Capital Management
Oregon
$80.1M
FFB
225
First Financial Bankshares
Texas
$76.7M