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Amphenol

1,826 hedge funds and large institutions have $141B invested in Amphenol in 2025 Q3 according to their latest regulatory filings, with 283 funds opening new positions, 721 increasing their positions, 621 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed

233% more first-time investments, than exits

New positions opened: 283 | Existing positions closed: 85

42% more call options, than puts

Call options by funds: $764M | Put options by funds: $539M

23% more capital invested

Capital invested by funds: $115B → $141B (+$26.4B)

19% more funds holding in top 10

Funds holding in top 10: 7893 (+15)

16% more repeat investments, than reductions

Existing positions increased: 721 | Existing positions reduced: 621

11% more funds holding

Funds holding: 1,6461,826 (+180)

2.83% less ownership

Funds ownership: 96.18%93.35% (-2.8%)

Holders
1,826
Holders Change
+180
Holders Change %
+10.94%
% of All Funds
23.97%
Holding in Top 10
93
Holding in Top 10 Change
+15
Holding in Top 10 Change %
+19.23%
% of All Funds
1.22%
New
283
Increased
721
Reduced
621
Closed
85
Calls
$764M
Puts
$539M
Net Calls
+$225M
Net Calls Change
+$60.9M
Name Holding Trade Value Shares
Change
Change in
Stake
Marshall Wace
126
Marshall Wace
United Kingdom
$137M -$10.1M -92,129 -8%
State Board of Administration of Florida Retirement System
127
State Board of Administration of Florida Retirement System
Florida
$137M -$11.5M -104,596 -9%
JIC
128
Johnson Investment Counsel
Ohio
$136M -$3.23M -29,446 -3%
CAM
129
Close Asset Management
United Kingdom
$136M +$120M +1,091,735 +28,859%
KBC Group
130
KBC Group
Belgium
$135M +$61M +555,925 +103%
Canada Life
131
Canada Life
Manitoba, Canada
$135M +$2.73M +24,921 +2%
Adage Capital Partners
132
Adage Capital Partners
Massachusetts
$135M -$1.39M -12,700 -1%
SAM
133
Storebrand Asset Management
Norway
$135M +$73.2M +667,002 +159%
PC
134
Port Capital
Illinois
$133M -$10.2M -93,018 -8%
DekaBank Deutsche Girozentrale
135
DekaBank Deutsche Girozentrale
Germany
$131M
LPL Financial
136
LPL Financial
California
$130M +$14.1M +128,195 +14%
Manulife (Manufacturers Life Insurance)
137
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$128M -$9.3M -84,736 -8%
National Bank of Canada
138
National Bank of Canada
Quebec, Canada
$127M -$3.51M -31,964 -3%
BFS
139
Bradley Foster & Sargent
Connecticut
$126M -$1.35M -12,345 -1%
Fiera Capital (Canada)
140
Fiera Capital (Canada)
Quebec, Canada
$126M -$981K -8,940 -0.9%
Allspring Global Investments
141
Allspring Global Investments
North Carolina
$125M -$8.01M -73,026 -7%
Aberdeen Group
142
Aberdeen Group
United Kingdom
$123M +$3.78M +34,450 +4%
Canada Pension Plan Investment Board
143
Canada Pension Plan Investment Board
Ontario, Canada
$123M +$5.08M +46,257 +5%
CPC
144
Cookson Peirce & Co
Pennsylvania
$121M -$3.29M -29,969 -3%
CAM
145
Congress Asset Management
Massachusetts
$120M +$74.6M +679,617 +236%
Aviva
146
Aviva
United Kingdom
$116M +$8.96M +81,665 +10%
New York State Teachers Retirement System (NYSTRS)
147
New York State Teachers Retirement System (NYSTRS)
New York
$115M +$3.72M +33,878 +4%
Select Equity Group
148
Select Equity Group
New York
$115M +$27.8M +253,232 +37%
KeyBank National Association
149
KeyBank National Association
Ohio
$112M -$8.69M -79,174 -8%
Susquehanna International Group
150
Susquehanna International Group
Pennsylvania
$110M +$53.4M +486,961 +120%