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Amphenol

1,797 hedge funds and large institutions have $140B invested in Amphenol in 2025 Q3 according to their latest regulatory filings, with 283 funds opening new positions, 707 increasing their positions, 607 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more capital invested

Capital invested by funds: $ → $

more funds holding in top 10

Funds holding in top 10:

16% more repeat investments, than reductions

Existing positions increased: 707 | Existing positions reduced: 607

10% more funds holding

Funds holding: 1,6361,797 (+161)

3.57% less ownership

Funds ownership: 95.99%92.42% (-3.6%)

Holders
1,797
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
91
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$764M
Puts
$539M
Net Calls
Net Calls Change

Top Buyers

1 +$1.82B
2 +$993M
3 +$787M
4
BlackRock
BlackRock
New York
+$778M
5
Winslow Capital Management
Winslow Capital Management
Minnesota
+$548M

Top Sellers

1 -$1.89B
2 -$1.18B
3 -$1.09B
4
Bank of New York Mellon
Bank of New York Mellon
New York
-$529M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$299M
Name Holding Trade Value Shares
Change
Change in
Stake
Millennium Management
76
Millennium Management
New York
$256M
FAM
77
Fenimore Asset Management
New York
$254M
D.E. Shaw & Co
78
D.E. Shaw & Co
New York
$254M
TD Asset Management
79
TD Asset Management
Ontario, Canada
$246M
Mackenzie Financial
80
Mackenzie Financial
Ontario, Canada
$243M
Bank of Montreal
81
Bank of Montreal
Ontario, Canada
$241M
Ameriprise
82
Ameriprise
Minnesota
$239M
California State Teachers Retirement System (CalSTRS)
83
California State Teachers Retirement System (CalSTRS)
California
$239M
BAMCO Inc
84
BAMCO Inc
New York
$234M
JHP
85
James Hambro & Partners
United Kingdom
$225M
1832 Asset Management
86
1832 Asset Management
Ontario, Canada
$222M
HF
87
HRT Financial
New York
$218M
MIM
88
Meridiem Investment Management
United Kingdom
$217M
SFFS
89
Stonehage Fleming Financial Services
Jersey
$216M
Lord, Abbett & Co
90
Lord, Abbett & Co
New Jersey
$207M
Voloridge Investment Management
91
Voloridge Investment Management
Florida
$203M
A
92
AustralianSuper
Australia
$198M
New York State Common Retirement Fund
93
New York State Common Retirement Fund
New York
$198M
Qube Research & Technologies (QRT)
94
Qube Research & Technologies (QRT)
United Kingdom
$196M
MC
95
Maren Capital
Illinois
$192M
GIM
96
Glenmede Investment Management
Pennsylvania
$188M
ACP
97
Atalan Capital Partners
New York
$184M
Public Employees Retirement Association of Colorado
98
Public Employees Retirement Association of Colorado
Colorado
$184M
Cerity Partners
99
Cerity Partners
New York
$184M
CIC
100
Chilton Investment Company
Connecticut
$180M