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
Acadian Asset Management
76
Acadian Asset Management
Massachusetts
$101M
Thrivent Financial for Lutherans
77
Thrivent Financial for Lutherans
Minnesota
$101M
William Blair & Company
78
William Blair & Company
Illinois
$99.8M
N
79
Nuveen
North Carolina
$99.1M
TG
80
TCW Group
California
$98M
RhumbLine Advisers
81
RhumbLine Advisers
Massachusetts
$93.1M
PC
82
Port Capital
Illinois
$92.7M
Ensign Peak Advisors
83
Ensign Peak Advisors
Utah
$91.9M
Arrowstreet Capital
84
Arrowstreet Capital
Massachusetts
$91.2M
California Public Employees Retirement System
85
California Public Employees Retirement System
California
$88.6M
HL
86
Harding Loevner
New Jersey
$86.6M
DMIC
87
Dixon Mitchell Investment Counsel
British Columbia, Canada
$82.5M
Janus Henderson Group
88
Janus Henderson Group
United Kingdom
$82M
California State Teachers Retirement System (CalSTRS)
89
California State Teachers Retirement System (CalSTRS)
California
$81.7M
BNP Paribas Asset Management
90
BNP Paribas Asset Management
France
$81.3M
Capital International Investors
91
Capital International Investors
California
$81.3M
Wells Fargo
92
Wells Fargo
California
$79.1M
Raymond James Financial
93
Raymond James Financial
Florida
$79M
MDSL
94
M.D. Sass LLC
New York
$77.8M
GT
95
Glenmede Trust
Pennsylvania
$76.7M
FAM
96
Fenimore Asset Management
New York
$75.5M
CC
97
Cartenna Capital
Connecticut
$71.9M
SEI Investments
98
SEI Investments
Pennsylvania
$70.8M
Russell Investments Group
99
Russell Investments Group
United Kingdom
$69.4M
Canada Pension Plan Investment Board
100
Canada Pension Plan Investment Board
Ontario, Canada
$68.5M