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
BTW
301
Boston Trust Walden
Massachusetts
$9M
UHC
302
Union Heritage Capital
Michigan
$8.86M
LFM
303
LGT Fund Management
Liechtenstein
$8.65M
HIC
304
Harvey Investment Company
Kentucky
$8.57M
UIM
305
USS Investment Management
United Kingdom
$8.55M
SAM
306
Sawgrass Asset Management
Florida
$8.45M
IMPI
307
Ilmarinen Mutual Pension Insurance
Finland
$8.36M
DCM
308
Decatur Capital Management
Georgia
$8.32M
OSAM
309
O'Shaughnessy Asset Management
Connecticut
$8.3M
SI
310
Stephens Inc
Arkansas
$8.28M
URS
311
Utah Retirement Systems
Utah
$8.03M
Public Sector Pension Investment Board (PSP Investments)
312
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$7.96M
ProShare Advisors
313
ProShare Advisors
Maryland
$7.89M
NAMP
314
NorthStar Asset Management (Pennsylvania)
Pennsylvania
$7.88M
TI
315
Tidal Investments
Wisconsin
$7.88M
OIMU
316
Osmosis Investment Management UK
United Kingdom
$7.87M
Wealthfront Advisers
317
Wealthfront Advisers
California
$7.85M
AG
318
AIA Group
Hong Kong
$7.71M
RPI
319
Railway Pension Investments
United Kingdom
$7.69M
PFSRSONJ
320
Police & Firemen's Retirement System of New Jersey
New Jersey
$7.62M
MIP
321
Marietta Investment Partners
Wisconsin
$7.61M
Mercer Global Advisors
322
Mercer Global Advisors
Colorado
$7.58M
PGFC
323
Peapack-Gladstone Financial Corp
New Jersey
$7.54M
JIC
324
Johnson Investment Counsel
Ohio
$7.44M
RCM
325
Regency Capital Management
Hawaii
$7.37M