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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
OIAM
251
OFI Invest Asset Management
France
$63.3M
ClearBridge Investments
252
ClearBridge Investments
New York
$63.2M
WHG
253
Westwood Holdings Group
Texas
$63.2M
MIM
254
MetLife Investment Management
New Jersey
$62.7M
Fifth Third Bancorp
255
Fifth Third Bancorp
Ohio
$62M
RT
256
Rockland Trust
Massachusetts
$60.8M
COPPSERS
257
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$60.8M
WT
258
Whittier Trust
California
$60.7M
DADC
259
D.A. Davidson & Co
Montana
$60.7M
PGFC
260
Peapack-Gladstone Financial Corp
New Jersey
$59.8M
DLA
261
Douglas Lane & Associates
New York
$59.6M
PL
262
Perpetual Ltd
Australia
$59.3M
BPC
263
Banque Pictet & Cie
Switzerland
$58.6M
KCM
264
Kornitzer Capital Management
Kansas
$58.2M
IMRF
265
Illinois Municipal Retirement Fund
Illinois
$57.5M
Assenagon Asset Management
266
Assenagon Asset Management
Luxembourg
$57M
GIA
267
Gateway Investment Advisers
Ohio
$56.5M
ZIG
268
Zurich Insurance Group
Switzerland
$55.7M
Retirement Systems of Alabama
269
Retirement Systems of Alabama
Alabama
$55.6M
VLKIM
270
Van Lanschot Kempen Investment Management
Netherlands
$55.2M
GT
271
Glenmede Trust
Pennsylvania
$55.2M
RCM
272
Radnor Capital Management
Pennsylvania
$54.7M
SCTC
273
Sanibel Captiva Trust Company
Florida
$53.8M
II
274
IFM Investors
Australia
$53.7M
RCM
275
RNC Capital Management
California
$53.2M