1,009 hedge funds and large institutions have $37B invested in Ametek in 2025 Q3 according to their latest regulatory filings, with 118 funds opening new positions, 380 increasing their positions, 334 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

1% more capital invested

Capital invested by funds: $36.7B → $37B (+$292M)

2.62% less ownership

Funds ownership: 87.97%85.35% (-2.6%)

7% less funds holding in top 10

Funds holding in top 10: 1514 (-1)

Holders
1,009
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
14
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$48.8M
Puts
$15.2M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
RAM
351
Robocap Asset Management
United Kingdom
$4.57M
Mercer Global Advisors
352
Mercer Global Advisors
Colorado
$4.47M
CISOA
353
Capital Investment Services of America
Wisconsin
$4.44M
TIAA Trust, National Association
354
TIAA Trust, National Association
North Carolina
$4.4M
OAM
355
Ostrum Asset Management
France
$4.4M
HI
356
Horizon Investments
North Carolina
$4.33M
AIM
357
ARK Investment Management
Florida
$4.32M
ACM
358
Argent Capital Management
Missouri
$4.28M
UM
359
UniSuper Management
Australia
$4.27M
Pathstone Holdings
360
Pathstone Holdings
New Jersey
$4.22M
RC
361
Roundview Capital
New Jersey
$4.13M
TWP
362
Tyche Wealth Partners
Texas
$4.12M
FNA
363
First National Advisers
Nebraska
$4.12M
FAM
364
Fulcrum Asset Management
United Kingdom
$4.04M
Public Employees Retirement Association of Colorado
365
Public Employees Retirement Association of Colorado
Colorado
$4.01M
Fuller & Thaler Asset Management
366
Fuller & Thaler Asset Management
California
$4.01M
A
367
AlphaQuest
New York
$4.01M
EI
368
Ethic Inc
New York
$3.98M
1WM
369
1858 Wealth Management
Ohio
$3.98M
Rafferty Asset Management
370
Rafferty Asset Management
New York
$3.91M
FNBOO
371
First National Bank of Omaha
Nebraska
$3.87M
Commonwealth Equity Services
372
Commonwealth Equity Services
Massachusetts
$3.85M
GC
373
Guggenheim Capital
Illinois
$3.82M
N
374
Numerai
California
$3.8M
Public Sector Pension Investment Board (PSP Investments)
375
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$3.78M