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1,150 hedge funds and large institutions have $43B invested in Ametek in 2026 Q1 according to their latest regulatory filings, with 136 funds opening new positions, 463 increasing their positions, 369 reducing their positions, and 90 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: $42.1B → $43B (+$859M)

1.54% less ownership

Funds ownership: 89.22%87.68% (-1.5%)

8% less funds holding in top 10

Funds holding in top 10: 2422 (-2)

Holders
1,150
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
NRS
426
Neville Rodie & Shaw
New York
$3.6M
CAU
427
Caxton Associates (UK)
$3.56M
MML Investors Services
428
MML Investors Services
Massachusetts
$3.51M
CIS
429
Capital International Sarl
California
$3.5M
BCI
430
Brinker Capital Investments
Pennsylvania
$3.44M
OC
431
Oppenheimer & Co
New York
$3.35M
IB
432
Intrust Bank
Kansas
$3.34M
Rockefeller Capital Management
433
Rockefeller Capital Management
New York
$3.31M
RAM
434
Robocap Asset Management
United Kingdom
$3.3M
TWIM
435
TIAA Wealth Investment Management
New York
$3.26M
PCM
436
Polymer Capital Management
New York
$3.24M
Rafferty Asset Management
437
Rafferty Asset Management
New York
$3.21M
AI
438
Atria Investments
North Carolina
$3.21M
HPG
439
Harvest Portfolios Group
Ontario, Canada
$3.18M
PWM
440
Perigon Wealth Management
California
$3.18M
KC
441
Kepler Cheuvreux
$3.17M
SIA
442
Sit Investment Associates
Minnesota
$3.15M
STA
443
Summit Trail Advisors
New York
$3.14M
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
444
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$3.1M
AAM
445
Advisors Asset Management
Colorado
$3.08M
FDS
446
Freedom Day Solutions
Texas
$3.04M
AI
447
Atom Investors
Texas
$3.02M
MSU
448
Mizuho Securities USA
New York
$2.98M
MWA
449
Medallion Wealth Advisors
Connecticut
$2.98M
NB
450
Norinchukin Bank
Japan
$2.96M