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1,125 hedge funds and large institutions have $42.1B invested in Ametek in 2025 Q4 according to their latest regulatory filings, with 184 funds opening new positions, 400 increasing their positions, 372 reducing their positions, and 70 closing their positions.

New
Increased
Maintained
Reduced
Closed

163% more first-time investments, than exits

New positions opened: 184 | Existing positions closed: 70

78% more call options, than puts

Call options by funds: $87.1M | Put options by funds: $49M

71% more funds holding in top 10

Funds holding in top 10: 1424 (+10)

13% more capital invested

Capital invested by funds: $37.4B → $42.1B (+$4.72B)

9% more funds holding

Funds holding: 1,0311,125 (+94)

2.9% more ownership

Funds ownership: 86.33%89.22% (+2.9%)

8% more repeat investments, than reductions

Existing positions increased: 400 | Existing positions reduced: 372

Holders
1,125
Holders Change
+94
Holders Change %
+9.12%
% of All Funds
13.69%
Holding in Top 10
24
Holding in Top 10 Change
+10
Holding in Top 10 Change %
+71.43%
% of All Funds
0.29%
New
184
Increased
400
Reduced
372
Closed
70
Calls
$87.1M
Puts
$49M
Net Calls
+$38M
Net Calls Change
+$4.4M
Name Holding Trade Value Shares
Change
Change in
Stake
Millennium Management
51
Millennium Management
New York
$167M -$6.32M -32,488 -4%
Bank Julius Baer & Co
52
Bank Julius Baer & Co
Switzerland
$167M -$3.94M -20,229 -2%
DekaBank Deutsche Girozentrale
53
DekaBank Deutsche Girozentrale
Germany
$166M
1832 Asset Management
54
1832 Asset Management
Ontario, Canada
$165M +$156M +800,420 +47,111%
Voloridge Investment Management
55
Voloridge Investment Management
Florida
$159M +$13.2M +68,047 +10%
American Century Companies
56
American Century Companies
Missouri
$151M +$50.7M +260,417 +55%
Barclays
57
Barclays
United Kingdom
$146M -$19M -97,567 -12%
CLOS
58
Compagnie Lombard Odier SCmA
Switzerland
$143M +$13.5M +69,445 +11%
Natixis Advisors
59
Natixis Advisors
Massachusetts
$138M +$17.5M +89,853 +15%
Two Sigma Advisers
60
Two Sigma Advisers
New York
$134M +$50.9M +261,400 +67%
Swiss National Bank
61
Swiss National Bank
Switzerland
$130M -$6.34M -32,600 -5%
CIP
62
Champlain Investment Partners
Vermont
$127M -$51.6M -265,408 -30%
JHP
63
James Hambro & Partners
United Kingdom
$125M -$2.03M -10,427 -2%
GI
64
GAMCO Investors
Connecticut
$125M -$3.09M -15,890 -3%
Allianz Asset Management
65
Allianz Asset Management
Germany
$124M +$76.3M +392,210 +187%
FGP
66
Freestone Grove Partners
California
$122M +$22.9M +117,850 +25%
Bessemer Group
67
Bessemer Group
New Jersey
$120M -$2.19M -11,243 -2%
HPC
68
HM Payson & Co
Maine
$116M +$406K +2,085 +0.4%
SAM
69
Silvercrest Asset Management
New York
$114M -$5.73M -29,452 -5%
Royal London Asset Management
70
Royal London Asset Management
United Kingdom
$110M +$4.17M +21,427 +4%
Sumitomo Mitsui Trust Group
71
Sumitomo Mitsui Trust Group
Japan
$108M -$2.17M -11,127 -2%
Ameriprise
72
Ameriprise
Minnesota
$107M -$73.3M -376,817 -42%
Assenagon Asset Management
73
Assenagon Asset Management
Luxembourg
$105M +$57.8M +297,052 +139%
BNP Paribas Financial Markets
74
BNP Paribas Financial Markets
France
$105M -$73.4M -377,391 -43%
Mitsubishi UFJ Asset Management
75
Mitsubishi UFJ Asset Management
Japan
$102M +$5.57M +28,621 +6%