3,294 hedge funds and large institutions have $160B invested in Merck in 2025 Q3 according to their latest regulatory filings, with 189 funds opening new positions, 1,347 increasing their positions, 1,421 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: 3,3143,294 (-20)

5% less repeat investments, than reductions

Existing positions increased: 1,347 | Existing positions reduced: 1,421

2.2% less ownership

Funds ownership: 78.35%76.15% (-2.2%)

Holders
3,294
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
TLP
301
Tri Locum Partners
New York
$37.5M
PA
302
Pinnacle Associates
New York
$37.2M
CIM
303
Corda Investment Management
Texas
$37M
KBG
304
Kahn Brothers Group
New York
$36.4M
IMPI
305
Ilmarinen Mutual Pension Insurance
Finland
$36.3M
PI
306
PineBridge Investments
New York
$36.3M
FT
307
Fiduciary Trust
Massachusetts
$36.3M
AAP
308
Arax Advisory Partners
Colorado
$36M
SSA
309
Schonfeld Strategic Advisors
New York
$35.9M
UIM
310
USS Investment Management
United Kingdom
$35.5M
SCI
311
S&CO Inc
Massachusetts
$35.5M
URS
312
Utah Retirement Systems
Utah
$34.9M
UBP
313
Union Bancaire Privee
Switzerland
$34.9M
VDI
314
Vaughan David Investments
Illinois
$34.6M
X
315
Xponance
Pennsylvania
$34.5M
SAI
316
Systematic Alpha Investments
New Jersey
$34.5M
PP
317
Prudential plc
United Kingdom
$34.4M
RG
318
Rathbones Group
United Kingdom
$34.3M
Cambridge Investment Research Advisors
319
Cambridge Investment Research Advisors
Iowa
$34.1M
PFSRSONJ
320
Police & Firemen's Retirement System of New Jersey
New Jersey
$34.1M
VMPIC
321
Varma Mutual Pension Insurance Co
Finland
$33.8M
CI
322
Conning Inc
Connecticut
$33.7M
Vontobel Holding
323
Vontobel Holding
Switzerland
$33.4M
CRC
324
Curi RMB Capital
Illinois
$33M
CIBC Private Wealth Group
325
CIBC Private Wealth Group
Georgia
$33M