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
ES
1026
Element Squared
Minnesota
CC
1027
Centiva Capital
New York
OQS
1028
Occudo Quantitative Strategies
Florida
KM
1029
KP Management
Minnesota
SRL
1030
Scientech Research LLC
New Jersey
UOC
1031
UBS O'Connor
Illinois
BCM
1032
Bayesian Capital Management
New York
TSS
1033
Two Sigma Securities
New York
TCM
1034
Teza Capital Management
Illinois
SWM
1035
SeaCrest Wealth Management
New York
FIM
1036
Freedom Investment Management
Connecticut
SIG
1037
Sargent Investment Group
Maryland
PC
1038
Promus Capital
Illinois
Grantham, Mayo, Van Otterloo & Co (GMO)
1039
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
VT
1040
Volterra Technologies
New York
ACS
1041
Archford Capital Strategies
Illinois
CB
1042
Cooke & Bieler
Pennsylvania
IMRF
1043
Illinois Municipal Retirement Fund
Illinois
TCM
1044
Tributary Capital Management
Nebraska
EC
1045
EntryPoint Capital
New York
CIM
1046
Contravisory Investment Management
Massachusetts
GCP
1047
GSA Capital Partners
United Kingdom
HM
1048
Harvest Management
New York
WAG
1049
Wallace Advisory Group
California
TB
1050
Terril Brothers
Missouri