1,116 hedge funds and large institutions have $42.1B invested in Ametek in 2025 Q4 according to their latest regulatory filings, with 180 funds opening new positions, 398 increasing their positions, 370 reducing their positions, and 70 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: $ → $

9% more funds holding

Funds holding: 1,0271,116 (+89)

2.87% more ownership

Funds ownership: 86.26%89.14% (+2.9%)

8% more repeat investments, than reductions

Existing positions increased: 398 | Existing positions reduced: 370

Holders
1,116
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
24
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$87.1M
Puts
$49M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
FMI
126
Factory Mutual Insurance
Massachusetts
$44.2M
Corient Private Wealth
127
Corient Private Wealth
Florida
$44M
WorldQuant Millennium Advisors
128
WorldQuant Millennium Advisors
New York
$43.8M
Teacher Retirement System of Texas
129
Teacher Retirement System of Texas
Texas
$43.1M
NAM
130
Nissay Asset Management
Japan
$42.8M
Manulife (Manufacturers Life Insurance)
131
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$41.8M
Mawer Investment Management
132
Mawer Investment Management
Alberta, Canada
$41.3M
State Board of Administration of Florida Retirement System
133
State Board of Administration of Florida Retirement System
Florida
$40.5M
PNC Financial Services Group
134
PNC Financial Services Group
Pennsylvania
$39.6M
DZ Bank
135
DZ Bank
Germany
$38.9M
SG Americas Securities
136
SG Americas Securities
New York
$38.5M
MPIA
137
Mountain Pacific Investment Advisers
Idaho
$38.5M
Envestnet Asset Management
138
Envestnet Asset Management
Illinois
$37.9M
Aviva
139
Aviva
United Kingdom
$37.9M
Robeco Institutional Asset Management
140
Robeco Institutional Asset Management
Netherlands
$37.7M
Adage Capital Partners
141
Adage Capital Partners
Massachusetts
$37.5M
Artisan Partners
142
Artisan Partners
Wisconsin
$36.8M
NSAM
143
North Star Asset Management
Wisconsin
$36.5M
TD Asset Management
144
TD Asset Management
Ontario, Canada
$36.4M
MVIP
145
Mar Vista Investment Partners
California
$36M
SSA
146
Schonfeld Strategic Advisors
New York
$35.6M
Korea Investment Corp
147
Korea Investment Corp
South Korea
$35.6M
DP
148
Dundas Partners
United Kingdom
$34.9M
HCMG
149
Howard Capital Management Group
California
$33.1M
New York State Teachers Retirement System (NYSTRS)
150
New York State Teachers Retirement System (NYSTRS)
New York
$32.9M