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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
WG
1176
Winton Group
United Kingdom
$664K +$589K +5,365 New
KFC
1177
Klingenstein Fields & Co
New York
$659K -$1.29M -11,730 -69%
TWM
1178
Tradition Wealth Management
Minnesota
$656K -$21K -191 -3%
CIA
1179
Caerus Investment Advisors
Texas
$655K +$581K +5,296 New
TCA
1180
Tortoise Capital Advisors
Kansas
$653K +$579K +5,280 New
BAM
1181
Blueshift Asset Management
New Jersey
$653K +$579K +5,275 New
HT
1182
Headlands Technologies
Illinois
$652K +$522K +4,754 +927%
ST
1183
Smithfield Trust
Pennsylvania
$650K -$6.47K -59 -1%
KFGK
1184
Keystone Financial Group (Kentucky)
Kentucky
$646K +$573K +5,224 New
FMLI
1185
Fukoku Mutual Life Insurance
Japan
$646K – – –
SHFA
1186
SC&H Financial Advisors
Maryland
$646K – – –
EWM
1187
Empirical Wealth Management
Washington
$645K +$225K +2,053 +65%
LC
1188
Landaas & Company
Wisconsin
$644K – – –
WAG
1189
Wallace Advisory Group
California
$642K -$142K -1,291 -17%
EL
1190
EWA LLC
Pennsylvania
$642K -$1.65K -15 -0.3%
APA
1191
Astoria Portfolio Advisors
New York
$638K +$556K +5,068 New
BC
1192
Bridgefront Capital
Texas
$630K -$289K -2,631 -34%
CPA
1193
Capital Performance Advisors
California
$628K +$202K +1,842 +57%
BBHC
1194
Brown Brothers Harriman & Co
New York
$627K +$166K +1,510 +42%
TCM
1195
Tributary Capital Management
Nebraska
$626K -$207K -1,890 -27%
KRW
1196
Kaufman Rossin Wealth
Florida
$625K +$51K +465 +10%
NAS
1197
Nicolet Advisory Services
Wisconsin
$624K -$15.5K -141 -3%
PWPS
1198
Pinnacle Wealth Planning Services
Ohio
$623K +$79.6K +725 +17%
QC
1199
Quent Capital
New York
$622K +$12.9K +118 +2%
TW
1200
TritonPoint Wealth
Maryland
$622K +$30.3K +276 +6%
46 47
48
49 50

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.