1,027 hedge funds and large institutions have $37.4B invested in Ametek in 2025 Q3 according to their latest regulatory filings, with 119 funds opening new positions, 387 increasing their positions, 341 reducing their positions, and 74 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:

2% more capital invested

Capital invested by funds: $36.7B → $37.4B (+$642M)

1.82% less ownership

Funds ownership: 88.09%86.27% (-1.8%)

7% less funds holding in top 10

Funds holding in top 10: 1514 (-1)

Holders
1,027
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
GAM
201
Gotham Asset Management
New York
$16.2M
HWA
202
HCR Wealth Advisors
California
$16.1M
T. Rowe Price Investment Management
203
T. Rowe Price Investment Management
Maryland
$15.9M
Jane Street
204
Jane Street
New York
$15.8M
DCP
205
Distillate Capital Partners
Illinois
$15.8M
TG
206
TCW Group
California
$15.6M
Swedbank
207
Swedbank
Sweden
$15.4M
PMAM
208
Picton Mahoney Asset Management
Ontario, Canada
$15.3M
State of New Jersey Common Pension Fund D
209
State of New Jersey Common Pension Fund D
New Jersey
$15.2M
KK
210
KLP Kapitalforvaltning
Norway
$15.2M
Nisa Investment Advisors
211
Nisa Investment Advisors
Missouri
$15.1M
GIA
212
GHP Investment Advisors
Colorado
$14.9M
Ohio Public Employees Retirement System (OPERS)
213
Ohio Public Employees Retirement System (OPERS)
Ohio
$14.8M
QCM
214
Quantinno Capital Management
New York
$14.7M
CAM
215
Congress Asset Management
Massachusetts
$14.5M
Nomura Asset Management
216
Nomura Asset Management
Japan
$14.4M
Connor, Clark & Lunn Investment Management (CC&L)
217
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$14.3M
VCM
218
Voleon Capital Management
California
$14.3M
BDLIB
219
Banque de Luxembourg Investments (BLI)
Luxembourg
$14.2M
KCM
220
Kornitzer Capital Management
Kansas
$14.2M
IC
221
IEQ Capital
California
$14.1M
QT
222
Quantbot Technologies
New York
$13.9M
LF
223
Lansforsakringar Fondforvaltning
Sweden
$13.8M
RAM
224
Resona Asset Management
Japan
$13.7M
DnB Asset Management
225
DnB Asset Management
Norway
$13.6M