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1,033 hedge funds and large institutions have $37.4B invested in Ametek in 2025 Q3 according to their latest regulatory filings, with 120 funds opening new positions, 390 increasing their positions, 341 reducing their positions, and 74 closing their positions.

New
Increased
Maintained
Reduced
Closed

221% more call options, than puts

Call options by funds: $48.8M | Put options by funds: $15.2M

62% more first-time investments, than exits

New positions opened: 120 | Existing positions closed: 74

14% more repeat investments, than reductions

Existing positions increased: 390 | Existing positions reduced: 341

3% more funds holding

Funds holding: 1,0031,033 (+30)

2% more capital invested

Capital invested by funds: $36.8B → $37.4B (+$646M)

1.81% less ownership

Funds ownership: 88.14%86.33% (-1.8%)

7% less funds holding in top 10

Funds holding in top 10: 1514 (-1)

Holders
1,033
Holders Change
+30
Holders Change %
+2.99%
% of All Funds
13.56%
Holding in Top 10
14
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-6.67%
% of All Funds
0.18%
New
120
Increased
390
Reduced
341
Closed
74
Calls
$48.8M
Puts
$15.2M
Net Calls
+$33.6M
Net Calls Change
+$18.8M
Name Holding Trade Value Shares
Change
Change in
Stake
SAM
451
Securian Asset Management
Minnesota
$2.08M -$187K -1,018 -8%
Rockefeller Capital Management
452
Rockefeller Capital Management
New York
$2.07M +$124K +673 +7%
CPW
453
Cove Private Wealth
New York
$2.07M
VNA
454
Valley National Advisers
Pennsylvania
$2.06M +$2.02M +10,966 New
IMCOOI
455
Investment Management Corp of Ontario (IMCO)
Canada
$2.04M +$959K +5,214 +93%
IGAM
456
iA Global Asset Management
Quebec, Canada
$2.03M +$1.99M +10,821 New
FC
457
Farringdon Capital
United Kingdom
$2.03M +$1.18M +6,415 +146%
MC
458
Mirabaud & Cie
Switzerland
$2.03M
PIM
459
Plato Investment Management
Australia
$2M
SBFM
460
S-Bank Fund Management
Finland
$2M -$25.4K -138 -1%
MOS
461
MGO One Seven
Ohio
$1.99M +$153K +834 +9%
NMERB
462
New Mexico Educational Retirement Board
New Mexico
$1.97M -$73.6K -400 -4%
CS
463
Candriam SCA
Luxembourg
$1.96M
AAM
464
Advisors Asset Management
Colorado
$1.94M +$466K +2,534 +32%
SLI
465
Sumitomo Life Insurance
Japan
$1.91M -$56.3K -306 -3%
TI
466
Tidal Investments
Wisconsin
$1.89M -$388K -2,108 -17%
TCPG
467
Trivant Custom Portfolio Group
California
$1.84M +$6.81K +37 +0.4%
HA
468
Harfst & Associates
Wyoming
$1.81M +$15.8K +86 +0.9%
RMC
469
Resources Management Corp
Connecticut
$1.81M -$4.6K -25 -0.3%
TRCT
470
Tower Research Capital (TRC)
New York
$1.78M +$70.3K +382 +4%
OC
471
Oppenheimer & Co
New York
$1.76M -$221K -1,203 -11%
RB
472
Rodgers Brothers
Pennsylvania
$1.74M
WA
473
Wasatch Advisors
Utah
$1.73M +$348K +1,889 +26%
ALMGDA
474
AG2R La Mondiale Gestion d'Actifs
France
$1.73M
PDL
475
Portfolio Design Labs
California
$1.72M -$1.79M -9,746 -52%