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Amphenol
APH

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: 78 → 93 (+15)

16% more repeat investments, than reductions

Existing positions increased: 721 | Existing positions reduced: 621

11% more funds holding

Funds holding: 1,646 → 1,826 (+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

Top Buyers

1
Capital International Investors
Capital International Investors
California
+$1.61B
2
Capital Research Global Investors
Capital Research Global Investors
California
+$880M
3
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$698M
4
BlackRock
BlackRock
New York
+$690M
5
Winslow Capital Management
Winslow Capital Management
Minnesota
+$486M

Top Sellers

1
Vanguard Group
Vanguard Group
Pennsylvania
-$1.68B
2
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
-$1.04B
3
Fidelity Investments
Fidelity Investments
Massachusetts
-$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
SAM
951
Sompo Asset Management
Japan
$1.41M -$9.88K -90 -0.8%
TPM
952
Triasima Portfolio Management
Quebec, Canada
$1.41M +$1.25M +11,378 New
CPIG
953
Chicago Partners Investment Group
Illinois
$1.4M +$207K +1,886 +23%
PCM
954
Prelude Capital Management
New York
$1.4M -$1.48M -13,466 -54%
SAM
955
Shell Asset Management
Netherlands
$1.39M -$14.1M -128,057 -92%
HT
956
Heritage Trust
Oklahoma
$1.38M +$132K +1,203 +12%
DWM
957
Dynasty Wealth Management
Florida
$1.38M +$382K +3,480 +45%
AIP
958
Ameritas Investment Partners
Nebraska
$1.38M -$31.6K -288 -3%
AC
959
Avestar Capital
New York
$1.37M -$220K -2,002 -15%
IIM
960
Intact Investment Management
Quebec, Canada
$1.37M +$1.22M +11,090 New
LT
961
Legacy Trust
Michigan
$1.37M -$63.6K -580 -5%
ECM
962
Evergreen Capital Management
Washington
$1.36M +$202K +1,844 +20%
FFS
963
Fischer Financial Services
Pennsylvania
$1.36M +$1.2M +10,980 New
CCIA
964
Campbell & Co Investment Adviser
Maryland
$1.34M +$1.19M +10,868 New
DWT
965
Dorsey & Whitney Trust
South Dakota
$1.34M +$5.16K +47 +0.4%
LI
966
LifeWealth Investments
Florida
$1.34M +$430K +3,923 +57%
DCA
967
DSG Capital Advisors
Minnesota
$1.32M +$818K +7,458 +231%
STAS
968
Strong Tower Advisory Services
Minnesota
$1.32M +$22.9K +209 +2%
IA
969
Inspire Advisors
Idaho
$1.32M +$16.9K +154 +1%
TPI
970
Trust Point Inc
Wisconsin
$1.31M +$1.16M +10,556 New
CCA
971
Checchi Capital Advisers
California
$1.31M -$93.2K -849 -7%
KNW
972
Kesler Norman & Wride
Utah
$1.3M -$993K -9,050 -33%
CT
973
Chicago Trust
Illinois
$1.3M +$288K +2,621 +33%
LWAM
974
Legacy Wealth Asset Management
Minnesota
$1.29M +$1.15M +10,461 New
ORI
975
Oak Ridge Investments
Illinois
$1.29M +$196K +1,782 +21%
37 38
39
40 41

APH Hedge Fund Activity: Q3 2025 in Review

1,826 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Amphenol (APH) for Q3 2025, worth a combined $141B — up 23% from $115B a quarter earlier.

Buyers outnumbered sellers: 283 funds opened new APH positions and 85 closed out — a net gain of 198 holders — while 721 added to existing stakes and 621 trimmed.

The largest buyer was Capital International Investors, adding an estimated $1.61B. The largest seller was Vanguard Group, cutting an estimated $1.68B.

  • 1,826 institutional investors held Amphenol (APH) as of Q3 2025, up from 1,646 in Q2 2025.
  • Funds reported $141B of Amphenol stock for Q3 2025, up 23% quarter-over-quarter.
  • 283 funds opened new Amphenol positions in Q3 2025 and 85 closed out, a net change of +198 holders.
  • The largest Amphenol buyer in Q3 2025 was Capital International Investors, an estimated $1.61B added.
  • The largest Amphenol seller in Q3 2025 was Vanguard Group, an estimated $1.68B sold.

Based on aggregated 13F filings for Q3 2025.