1,146 hedge funds and large institutions have $43B invested in Ametek in 2026 Q1 according to their latest regulatory filings, with 137 funds opening new positions, 461 increasing their positions, 367 reducing their positions, and 92 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,146
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
22
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$99M
Puts
$46.3M
Net Calls
Net Calls Change

Top Buyers

1 +$247M
2 +$168M
3 +$143M
4
Two Sigma Investments
Two Sigma Investments
New York
+$138M
5
JP Morgan Chase
JP Morgan Chase
New York
+$122M

Top Sellers

1 -$256M
2 -$232M
3 -$215M
4
BlackRock
BlackRock
New York
-$183M
5
ATO
Alecta Tjanstepension Omsesidigt
Sweden
-$165M
Name Holding Trade Value Shares
Change
Change in
Stake
Russell Investments Group
101
Russell Investments Group
United Kingdom
$79.8M
Millennium Management
102
Millennium Management
New York
$79.3M
GT
103
Glenmede Trust
Pennsylvania
$79M
MDSL
104
M.D. Sass LLC
New York
$77.6M
FAM
105
Fenimore Asset Management
New York
$77M
SG Americas Securities
106
SG Americas Securities
New York
$76.5M
LCIP
107
Life Cycle Investment Partners
$74.6M
ERSOT
108
Employees Retirement System of Texas
Texas
$73M
National Pension Service
109
National Pension Service
South Korea
$71.5M
CAPTRUST Financial Advisors
110
CAPTRUST Financial Advisors
North Carolina
$69.5M
Janus Henderson Group
111
Janus Henderson Group
United Kingdom
$68.8M
DB
112
Danske Bank
Denmark
$67.9M
RMDI
113
R.M. Davis Inc
Maine
$65.8M
Renaissance Technologies
114
Renaissance Technologies
New York
$65.6M
CRC
115
Curi RMB Capital
Illinois
$64.4M
Victory Capital Management
116
Victory Capital Management
Texas
$62.8M
Universal-Beteiligungs- und Servicegesellschaft
117
Universal-Beteiligungs- und Servicegesellschaft
Germany
$61.6M
FGP
118
Freestone Grove Partners
California
$61.2M
Artisan Partners
119
Artisan Partners
Wisconsin
$58.6M
Treasurer of the State of North Carolina
120
Treasurer of the State of North Carolina
North Carolina
$58.4M
PPF
121
PFA Pension Forsikringsaktieselskab
$58.4M
CBU
122
CIBC Bancorp USA
Illinois
$57.8M
Mariner
123
Mariner
Kansas
$55.4M
Jennison Associates
124
Jennison Associates
New York
$55M
Canada Life
125
Canada Life
Manitoba, Canada
$54.5M