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
OAC
501
OMERS Administration Corp
Ontario, Canada
$1.7M
DC
502
Davenport & Co
Virginia
$1.7M
QT
503
Quantbot Technologies
New York
$1.69M
Alyeska Investment Group
504
Alyeska Investment Group
Illinois
$1.66M
ACA
505
Affinity Capital Advisors
California
$1.63M
WA
506
Wasatch Advisors
Utah
$1.63M
NDSIB
507
North Dakota State Investment Board
North Dakota
$1.62M
HWM
508
HB Wealth Management
Georgia
$1.61M
AWM
509
Absher Wealth Management
North Carolina
$1.61M
PCA
510
Pallas Capital Advisors
Massachusetts
$1.61M
EF
511
Empirical Finance
Pennsylvania
$1.61M
IIA
512
ICW Investment Advisors
Arizona
$1.61M
CL
513
CIM LLC
New York
$1.61M
IA
514
Inspire Advisors
Idaho
$1.59M
RWP
515
RWA Wealth Partners
Massachusetts
$1.59M
WP
516
Woodline Partners
California
$1.55M
ECM
517
Everence Capital Management
Indiana
$1.54M
DWA
518
Douglass Winthrop Advisors
New York
$1.54M
DT
519
Diversified Trust
Tennessee
$1.53M
TRCT
520
Tower Research Capital (TRC)
New York
$1.53M
SDIC
521
South Dakota Investment Council
South Dakota
$1.52M
NMIMC
522
Northwestern Mutual Investment Management Company
Wisconsin
$1.51M
MGP
523
Metis Global Partners
California
$1.5M
KTM
524
Keeler Thomas Management
Utah
$1.5M
GI
525
GAMMA Investing
California
$1.5M