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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
P
926
Pitcairn
Pennsylvania
$1.58M -$608K -5,540 -30%
CAMG
927
CWA Asset Management Group
Florida
$1.57M +$95.4K +869 +7%
WSFS
928
Wilmington Savings Fund Society
Delaware
$1.56M -$2.63M -23,971 -66%
TP
929
Tranquility Partners
Tennessee
$1.56M -$89.2K -813 -6%
IAN
930
Integrated Advisors Network
Texas
$1.55M +$218K +1,985 +19%
NWMG
931
National Wealth Management Group
Ohio
$1.55M +$1.37M +12,506 New
WLG
932
Williamson Legacy Group
Indiana
$1.54M +$1.02M +9,277 +290%
HHAM
933
HITE Hedge Asset Management
Massachusetts
$1.53M +$1.36M +12,381 New
CSPIA
934
Cary Street Partners Investment Advisory
Virginia
$1.51M +$6.91K +63 +0.5%
CPRC
935
Consolidated Portfolio Review Corp
New York
$1.49M +$882K +8,039 +200%
BCV
936
Banque Cantonale Vaudoise
Switzerland
$1.48M +$85.3K +777 +7%
SWIG
937
Strategic Wealth Investment Group
Kentucky
$1.48M +$1.26M +11,446 +2,294%
BMCM
938
Burns Matteson Capital Management
New York
$1.47M +$296K +2,698 +29%
AP
939
Appleton Partners
Massachusetts
$1.47M -$61.1K -557 -4%
CCM
940
Crew Capital Management
Ohio
$1.47M -$988 -9 -0.1%
CI
941
Cigna Investments
Connecticut
$1.47M – – –
VA
942
VestGen Advisors
Illinois
$1.46M +$593K +5,408 +84%
EP
943
Edgestream Partners
New Jersey
$1.46M -$414K -3,775 -24%
SWM
944
Stockman Wealth Management
Montana
$1.46M – – –
AI
945
Accredited Investors
Minnesota
$1.45M +$42.1K +384 +3%
SDIC
946
South Dakota Investment Council
South Dakota
$1.43M -$143K -1,300 -10%
KIM
947
Kane Investment Management
California
$1.43M +$605K +5,509 +92%
SIC
948
Sterling Investment Counsel
New York
$1.42M +$967K +8,812 +334%
SW
949
SMART Wealth
Nebraska
$1.42M +$561K +5,115 +81%
BRWA
950
B. Riley Wealth Advisors
Florida
$1.41M +$278K +2,530 +28%
36 37
38
39 40

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.