3,288 hedge funds and large institutions have $159B invested in Merck in 2025 Q3 according to their latest regulatory filings, with 189 funds opening new positions, 1,344 increasing their positions, 1,419 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

1% less funds holding

Funds holding: 3,3093,288 (-21)

5% less repeat investments, than reductions

Existing positions increased: 1,344 | Existing positions reduced: 1,419

2.22% less ownership

Funds ownership: 78.27%76.04% (-2.2%)

Holders
3,288
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
46
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$2.83B
Puts
$2.51B
Net Calls
Net Calls Change

Top Sellers

1 -$847M
2 -$568M
3 -$443M
4
BlackRock
BlackRock
New York
-$285M
5
Goldman Sachs
Goldman Sachs
New York
-$278M
Name Holding Trade Value Shares
Change
Change in
Stake
Retirement Systems of Alabama
276
Retirement Systems of Alabama
Alabama
$44.7M
RCM
277
Radnor Capital Management
Pennsylvania
$43.7M
SCTC
278
Sanibel Captiva Trust Company
Florida
$43.7M
BBVA
279
Banco Bilbao Vizcaya Argentaria
Spain
$43.5M
BA
280
Bridgewater Associates
Connecticut
$43.1M
Calamos Advisors
281
Calamos Advisors
Illinois
$42.8M
RCM
282
RNC Capital Management
California
$42.4M
AAP
283
Aristotle Atlantic Partners
Florida
$41.7M
AG
284
AIA Group
Hong Kong
$41.6M
TG
285
TCW Group
California
$41.5M
BEI
286
Benjamin Edwards Inc
Missouri
$41.5M
FDCDDQ
287
Federation des caisses Desjardins du Quebec
Quebec, Canada
$41.2M
LA
288
LBP AM
France
$40.8M
BTW
289
Boston Trust Walden
Massachusetts
$40.3M
II
290
IFM Investors
Australia
$40M
CIBC Asset Management
291
CIBC Asset Management
Ontario, Canada
$39.9M
AB
292
Amalgamated Bank
New York
$39.9M
SC
293
SRB Corp
Massachusetts
$39.7M
P
294
&Partners
Tennessee
$39.5M
Pathstone Holdings
295
Pathstone Holdings
New Jersey
$39.1M
CSS
296
Cubist Systematic Strategies
Connecticut
$38.5M
NPA
297
Nichols & Pratt Advisers
Massachusetts
$38.2M
FMLI
298
Fukoku Mutual Life Insurance
Japan
$37.6M
BMSSC
299
B. Metzler seel. Sohn & Co
Germany
$37.5M
TLP
300
Tri Locum Partners
New York
$37.5M