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Amphenol

1,819 hedge funds and large institutions have $141B invested in Amphenol in 2025 Q3 according to their latest regulatory filings, with 282 funds opening new positions, 716 increasing their positions, 619 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: 716 | Existing positions reduced: 619

11% more funds holding

Funds holding: 1,6411,819 (+178)

2.89% less ownership

Funds ownership: 96.13%93.24% (-2.9%)

Holders
1,819
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
92
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 +$1.61B
2 +$880M
3 +$698M
4
BlackRock
BlackRock
New York
+$690M
5
Winslow Capital Management
Winslow Capital Management
Minnesota
+$486M

Top Sellers

1 -$1.68B
2 -$1.04B
3 -$971M
4
Bank of New York Mellon
Bank of New York Mellon
New York
-$469M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$265M
Name Holding Trade Value Shares
Change
Change in
Stake
Marshall Wace
126
Marshall Wace
United Kingdom
$137M
State Board of Administration of Florida Retirement System
127
State Board of Administration of Florida Retirement System
Florida
$137M
JIC
128
Johnson Investment Counsel
Ohio
$136M
CAM
129
Close Asset Management
United Kingdom
$136M
KBC Group
130
KBC Group
Belgium
$135M
Canada Life
131
Canada Life
Manitoba, Canada
$135M
Adage Capital Partners
132
Adage Capital Partners
Massachusetts
$135M
PC
133
Port Capital
Illinois
$133M
DekaBank Deutsche Girozentrale
134
DekaBank Deutsche Girozentrale
Germany
$131M
LPL Financial
135
LPL Financial
California
$130M
Manulife (Manufacturers Life Insurance)
136
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$128M
National Bank of Canada
137
National Bank of Canada
Quebec, Canada
$127M
BFS
138
Bradley Foster & Sargent
Connecticut
$126M
Fiera Capital (Canada)
139
Fiera Capital (Canada)
Quebec, Canada
$126M
Allspring Global Investments
140
Allspring Global Investments
North Carolina
$125M
Aberdeen Group
141
Aberdeen Group
United Kingdom
$123M
Canada Pension Plan Investment Board
142
Canada Pension Plan Investment Board
Ontario, Canada
$123M
CPC
143
Cookson Peirce & Co
Pennsylvania
$121M
CAM
144
Congress Asset Management
Massachusetts
$120M
Aviva
145
Aviva
United Kingdom
$116M
New York State Teachers Retirement System (NYSTRS)
146
New York State Teachers Retirement System (NYSTRS)
New York
$115M
Select Equity Group
147
Select Equity Group
New York
$115M
KeyBank National Association
148
KeyBank National Association
Ohio
$112M
Susquehanna International Group
149
Susquehanna International Group
Pennsylvania
$110M
NC
150
NZS Capital
Colorado
$109M