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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
CA
1201
Cornerstone Advisory
Maryland
$621K +$13.4K +122 +2%
LIA
1202
LS Investment Advisors
Michigan
$619K – – –
PWP
1203
Phillips Wealth Planners
Mississippi
$616K +$878 +8 +0.2%
PCM
1204
Parsons Capital Management
Rhode Island
$614K +$188K +1,711 +53%
EFP
1205
Elser Financial Planning
Indiana
$607K -$149K -1,357 -22%
UAG
1206
United Advisor Group
Ohio
$603K +$535K +4,872 New
RCM
1207
Raleigh Capital Management
North Carolina
$600K +$190K +1,730 +55%
MMA
1208
Miracle Mile Advisors
California
$597K +$203K +1,853 +62%
PTP
1209
Platform Technology Partners
New York
$597K +$110 +1 +0%
FA
1210
Financial Alternatives
California
$594K – – –
TAFW
1211
Tred Avon Family Wealth
Maryland
$591K +$524K +4,778 New
LFM
1212
LGT Fund Management
Liechtenstein
$586K – – –
CT
1213
Caldwell Trust
Florida
$582K – – –
CWP
1214
Curated Wealth Partners
California
$582K -$6.8K -62 -1%
IIC
1215
Ironwood Investment Counsel
Arizona
$579K – – –
PWA
1216
Prairie Wealth Advisors
Nebraska
$574K +$142K +1,295 +39%
SAM
1217
Sawgrass Asset Management
Florida
$574K -$18.1K -165 -3%
RCAG
1218
Rehmann Capital Advisory Group
Michigan
$573K -$18.3K -167 -3%
SCM
1219
Semanteon Capital Management
Massachusetts
$569K +$504K +4,595 New
TCA
1220
Transcend Capital Advisors
New Jersey
$566K +$121K +1,099 +32%
GPW
1221
Genesis Private Wealth
Virginia
$565K -$7.13K -65 -1%
BMWM
1222
Brown Miller Wealth Management
Virginia
$562K +$47K +428 +10%
CIM
1223
Cambria Investment Management
California
$559K +$495K +4,515 New
RP
1224
Riverwater Partners
Wisconsin
$558K +$7.46K +68 +2%
TFS
1225
Thoroughbred Financial Services
Tennessee
$558K – – –
47 48
49
50 51

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.