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
TCM
1051
Teza Capital Management
Illinois
SWM
1052
SeaCrest Wealth Management
New York
FIM
1053
Freedom Investment Management
Connecticut
SIG
1054
Sargent Investment Group
Maryland
PC
1055
Promus Capital
Illinois
Grantham, Mayo, Van Otterloo & Co (GMO)
1056
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
VT
1057
Volterra Technologies
New York
ACS
1058
Archford Capital Strategies
Illinois
CB
1059
Cooke & Bieler
Pennsylvania
IMRF
1060
Illinois Municipal Retirement Fund
Illinois
EC
1061
EntryPoint Capital
New York
CIM
1062
Contravisory Investment Management
Massachusetts
GCP
1063
GSA Capital Partners
United Kingdom
HM
1064
Harvest Management
New York
WAG
1065
Wallace Advisory Group
California
TB
1066
Terril Brothers
Missouri
PTC
1067
Petrus Trust Company
Texas
Walleye Trading
1068
Walleye Trading
New York
MPM
1069
MBB Public Markets
Illinois
GSC
1070
Ground Swell Capital
South Carolina
AIM
1071
Acropolis Investment Management
Missouri
QL
1072
Quarry LP
New York
QIM
1073
Quantitative Investment Management
Virginia
AWA
1074
Aaron Wealth Advisors
Illinois
PCP
1075
Proficio Capital Partners
Massachusetts