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
IMPI
301
Ilmarinen Mutual Pension Insurance
Finland
$36.3M
PI
302
PineBridge Investments
New York
$36.3M
FT
303
Fiduciary Trust
Massachusetts
$36.3M
AAP
304
Arax Advisory Partners
Colorado
$36M
SSA
305
Schonfeld Strategic Advisors
New York
$35.9M
UIM
306
USS Investment Management
United Kingdom
$35.5M
SCI
307
S&CO Inc
Massachusetts
$35.5M
URS
308
Utah Retirement Systems
Utah
$34.9M
UBP
309
Union Bancaire Privee
Switzerland
$34.9M
VDI
310
Vaughan David Investments
Illinois
$34.6M
X
311
Xponance
Pennsylvania
$34.5M
SAI
312
Systematic Alpha Investments
New Jersey
$34.5M
PP
313
Prudential plc
United Kingdom
$34.4M
RG
314
Rathbones Group
United Kingdom
$34.3M
Cambridge Investment Research Advisors
315
Cambridge Investment Research Advisors
Iowa
$34.1M
PFSRSONJ
316
Police & Firemen's Retirement System of New Jersey
New Jersey
$34.1M
VMPIC
317
Varma Mutual Pension Insurance Co
Finland
$33.8M
CI
318
Conning Inc
Connecticut
$33.7M
Vontobel Holding
319
Vontobel Holding
Switzerland
$33.4M
CRC
320
Curi RMB Capital
Illinois
$33M
CIBC Private Wealth Group
321
CIBC Private Wealth Group
Georgia
$33M
QCM
322
QRG Capital Management
Illinois
$32.2M
LWCFA
323
Loring Wolcott & Coolidge Fiduciary Advisors
Massachusetts
$31.7M
HI
324
Horizon Investments
North Carolina
$31.7M
MHC
325
Meyer Handelman Company
New York
$31.7M