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
Teacher Retirement System of Texas
126
Teacher Retirement System of Texas
Texas
$36.4M
MPIA
127
Mountain Pacific Investment Advisers
Idaho
$36M
NAM
128
Nissay Asset Management
Japan
$35.5M
MVIP
129
Mar Vista Investment Partners
California
$33.8M
NSAM
130
North Star Asset Management
Wisconsin
$33.5M
Aviva
131
Aviva
United Kingdom
$32.8M
DP
132
Dundas Partners
United Kingdom
$32.4M
Russell Investments Group
133
Russell Investments Group
United Kingdom
$32M
Balyasny Asset Management
134
Balyasny Asset Management
Illinois
$31.5M
AV
135
ASR Vermogensbeheer
Netherlands
$30.4M
Citigroup
136
Citigroup
New York
$30.3M
New York State Teachers Retirement System (NYSTRS)
137
New York State Teachers Retirement System (NYSTRS)
New York
$30.1M
Korea Investment Corp
138
Korea Investment Corp
South Korea
$29.9M
HCMG
139
Howard Capital Management Group
California
$29.4M
Allspring Global Investments
140
Allspring Global Investments
North Carolina
$29.1M
CI Investments Inc
141
CI Investments Inc
Ontario, Canada
$28.9M
Toronto Dominion Bank
142
Toronto Dominion Bank
Ontario, Canada
$28.8M
Victory Capital Management
143
Victory Capital Management
Texas
$28.4M
Mariner
144
Mariner
Kansas
$28.4M
Jones Financial Companies
145
Jones Financial Companies
Missouri
$28.4M
Macquarie Group
146
Macquarie Group
Australia
$28.3M
OCM
147
Osterweis Capital Management
California
$27.9M
National Bank of Canada
148
National Bank of Canada
Quebec, Canada
$27.7M
ELI
149
Empire Life Investments
Ontario, Canada
$27.5M
Prudential Financial
150
Prudential Financial
New Jersey
$27.3M