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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
AllianceBernstein
101
AllianceBernstein
Tennessee
$53.6M +$462K +2,511 +0.9%
KBC Group
102
KBC Group
Belgium
$53M -$1.39M -7,549 -3%
CAPTRUST Financial Advisors
103
CAPTRUST Financial Advisors
North Carolina
$50.4M +$1.49M +8,101 +3%
IP
104
Interval Partners
New York
$50M +$48.9M +265,944 New
Treasurer of the State of North Carolina
105
Treasurer of the State of North Carolina
North Carolina
$49M -$768K -4,173 -2%
Jennison Associates
106
Jennison Associates
New York
$49M -$4.46M -24,237 -9%
CIM
107
CCLA Investment Management
United Kingdom
$48.6M +$3.98M +21,633 +9%
Renaissance Technologies
108
Renaissance Technologies
New York
$48.1M -$3.4M -18,500 -7%
CIBC Private Wealth Group
109
CIBC Private Wealth Group
Georgia
$46.9M -$717K -3,897 -2%
GAM
110
Guinness Asset Management
United Kingdom
$46.7M -$2.22M -12,041 -5%
TCM
111
TimesSquare Capital Management
New York
$46.6M -$2.19M -11,882 -5%
SPI
112
Santori & Peters Inc
Pennsylvania
$46.1M -$146K -793 -0.3%
Bank of Montreal
113
Bank of Montreal
Ontario, Canada
$45.8M +$4.31M +23,424 +11%
Envestnet Asset Management
114
Envestnet Asset Management
Illinois
$45.3M -$3.01M -16,336 -6%
AAP
115
Aristotle Atlantic Partners
Florida
$44.6M -$1.33M -7,202 -3%
Caisse de Depot et Placement du Quebec (CDPQ)
116
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$43.7M -$4.04M -21,932 -9%
SEI Investments
117
SEI Investments
Pennsylvania
$43.7M +$1.68M +9,143 +4%
Aberdeen Group
118
Aberdeen Group
United Kingdom
$43.3M +$1.86M +10,120 +5%
Mawer Investment Management
119
Mawer Investment Management
Alberta, Canada
$42.8M -$1.83M -9,969 -4%
Adage Capital Partners
120
Adage Capital Partners
Massachusetts
$41.8M +$41M +222,593 New
Assenagon Asset Management
121
Assenagon Asset Management
Luxembourg
$40.2M +$1.17M +6,363 +3%
Allianz Asset Management
122
Allianz Asset Management
Germany
$39.5M +$14.6M +79,277 +61%
FMI
123
Factory Mutual Insurance
Massachusetts
$37.9M
State Board of Administration of Florida Retirement System
124
State Board of Administration of Florida Retirement System
Florida
$37.5M -$2.65M -14,418 -7%
Manulife (Manufacturers Life Insurance)
125
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$37.3M -$57.5M -312,756 -61%