3,253 hedge funds and large institutions have $159B invested in Merck in 2025 Q3 according to their latest regulatory filings, with 191 funds opening new positions, 1,331 increasing their positions, 1,399 reducing their positions, and 147 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: $ → $

5% less repeat investments, than reductions

Existing positions increased: 1,331 | Existing positions reduced: 1,399

1% less funds holding

Funds holding: 3,2963,253 (-43)

2.2% less ownership

Funds ownership: 78.07%75.87% (-2.2%)

Holders
3,253
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 -$863M
2 -$579M
3 -$452M
4
BlackRock
BlackRock
New York
-$291M
5
Goldman Sachs
Goldman Sachs
New York
-$283M
Name Holding Trade Value Shares
Change
Change in
Stake
HA
426
Homestead Advisers
Virginia
$20.1M
PHS
427
PFM Health Sciences
California
$19.8M
KFC
428
Klingenstein Fields & Co
New York
$19.5M
EAM
429
Erste Asset Management
Austria
$19.4M
DP
430
Dearborn Partners
Illinois
$19.2M
CPSAC
431
Chas P. Smith & Associates (CPS)
Florida
$19.2M
BCP
432
Blue Chip Partners
Michigan
$19.2M
GGI
433
Godsey & Gibb Inc
Virginia
$19.1M
HWM
434
HB Wealth Management
Georgia
$19M
SC
435
Savant Capital
Illinois
$19M
CFB
436
Cullen/Frost Bankers
Texas
$18.9M
ISL
437
Ingalls & Snyder LLC
New York
$18.9M
EB
438
Eastern Bank
Massachusetts
$18.8M
NPF
439
Norris Perne & French
Michigan
$18.8M
JFG
440
Jefferies Financial Group
New York
$18.7M
VIM
441
Vinva Investment Management
Australia
$18.6M
EHC
442
Everett Harris & Co
California
$18.6M
AP
443
Americana Partners
Texas
$18.5M
RAM
444
RWC Asset Management
United Kingdom
$18.4M
SCM
445
Suvretta Capital Management
New York
$18.4M
SC
446
Scotia Capital
Ontario, Canada
$18.3M
KWM
447
Kingsview Wealth Management
Oregon
$18.2M
SFM
448
Stack Financial Management
Montana
$18.2M
BBHC
449
Brown Brothers Harriman & Co
New York
$18.1M
MWM
450
Moran Wealth Management
Florida
$18M