1,147 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, 368 reducing their positions, and 92 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,147
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
MML Investors Services
426
MML Investors Services
Massachusetts
$3.51M
CIS
427
Capital International Sarl
California
$3.5M
BCI
428
Brinker Capital Investments
Pennsylvania
$3.44M
OC
429
Oppenheimer & Co
New York
$3.35M
IB
430
Intrust Bank
Kansas
$3.34M
Rockefeller Capital Management
431
Rockefeller Capital Management
New York
$3.31M
RAM
432
Robocap Asset Management
United Kingdom
$3.3M
TWIM
433
TIAA Wealth Investment Management
New York
$3.26M
PCM
434
Polymer Capital Management
New York
$3.24M
Rafferty Asset Management
435
Rafferty Asset Management
New York
$3.21M
AI
436
Atria Investments
North Carolina
$3.21M
HPG
437
Harvest Portfolios Group
Ontario, Canada
$3.18M
PWM
438
Perigon Wealth Management
California
$3.18M
KC
439
Kepler Cheuvreux
$3.17M
SIA
440
Sit Investment Associates
Minnesota
$3.15M
STA
441
Summit Trail Advisors
New York
$3.14M
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
442
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$3.1M
AAM
443
Advisors Asset Management
Colorado
$3.08M
FDS
444
Freedom Day Solutions
Texas
$3.04M
AI
445
Atom Investors
Texas
$3.02M
MSU
446
Mizuho Securities USA
New York
$2.98M
MWA
447
Medallion Wealth Advisors
Connecticut
$2.98M
NB
448
Norinchukin Bank
Japan
$2.96M
FPAS
449
Focus Partners Advisor Solutions
Missouri
$2.95M
BFG
450
Bleakley Financial Group
New Jersey
$2.94M