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Amphenol

1,646 hedge funds and large institutions have $115B invested in Amphenol in 2025 Q2 according to their latest regulatory filings, with 327 funds opening new positions, 556 increasing their positions, 572 reducing their positions, and 89 closing their positions.

New
Increased
Maintained
Reduced
Closed

267% more first-time investments, than exits

New positions opened: 327 | Existing positions closed: 89

63% more funds holding in top 10

Funds holding in top 10: 4878 (+30)

51% more capital invested

Capital invested by funds: $75.8B → $115B (+$38.8B)

44% more call options, than puts

Call options by funds: $537M | Put options by funds: $373M

16% more funds holding

Funds holding: 1,4241,646 (+222)

0.73% more ownership

Funds ownership: 95.45%96.18% (+0.73%)

3% less repeat investments, than reductions

Existing positions increased: 556 | Existing positions reduced: 572

Holders
1,646
Holders Change
+222
Holders Change %
+15.59%
% of All Funds
21.67%
Holding in Top 10
78
Holding in Top 10 Change
+30
Holding in Top 10 Change %
+62.5%
% of All Funds
1.03%
New
327
Increased
556
Reduced
572
Closed
89
Calls
$537M
Puts
$373M
Net Calls
+$164M
Net Calls Change
+$84.9M
Name Holding Trade Value Shares
Change
Change in
Stake
Capital International Investors
51
Capital International Investors
California
$325M +$1.07M +13,085 +0.4%
RG
52
Rathbones Group
United Kingdom
$324M -$11.2M -136,781 -4%
National Pension Service
53
National Pension Service
South Korea
$324M +$33.8M +413,121 +14%
ECU
54
Egerton Capital (UK)
United Kingdom
$313M +$115M +1,405,850 +80%
AQR Capital Management
55
AQR Capital Management
Connecticut
$302M -$14.9M -181,879 -6%
Natixis Advisors
56
Natixis Advisors
Massachusetts
$302M +$17.2M +210,746 +7%
LPPI
57
Local Pensions Partnership Investment
United Kingdom
$299M -$29.5M -360,500 -11%
TD Asset Management
58
TD Asset Management
Ontario, Canada
$294M -$3.8M -46,486 -2%
William Blair & Company
59
William Blair & Company
Illinois
$293M -$4.57M -55,902 -2%
CIBC Private Wealth Group
60
CIBC Private Wealth Group
Georgia
$289M +$7.59M +92,868 +3%
Vontobel Holding
61
Vontobel Holding
Switzerland
$278M -$23.7M -290,157 -9%
AM
62
AGF Management
Ontario, Canada
$276M +$144M +1,766,694 +172%
Principal Financial Group
63
Principal Financial Group
Iowa
$271M -$11.6M -142,267 -5%
Voloridge Investment Management
64
Voloridge Investment Management
Florida
$266M +$124M +1,517,980 +129%
Alkeon Capital Management
65
Alkeon Capital Management
New York
$264M +$9.81M +120,000 +5%
JIM
66
Jensen Investment Management
Oregon
$258M +$7.72M +94,418 +4%
Kayne Anderson Rudnick Investment Management
67
Kayne Anderson Rudnick Investment Management
California
$253M -$9.85M -120,486 -4%
Raymond James Financial
68
Raymond James Financial
Florida
$251M +$9.67M +118,235 +5%
MAM
69
Madison Asset Management
Wisconsin
$245M -$5.56M -68,028 -3%
RhumbLine Advisers
70
RhumbLine Advisers
Massachusetts
$241M +$2.49M +30,412 +1%
Millennium Management
71
Millennium Management
New York
$239M +$168M +2,056,158 +570%
American Century Companies
72
American Century Companies
Missouri
$238M +$101M +1,231,477 +105%
Mitsubishi UFJ Asset Management
73
Mitsubishi UFJ Asset Management
Japan
$237M +$13.5M +165,634 +7%
FAM
74
Fenimore Asset Management
New York
$226M -$752K -9,196 -0.4%
SFFS
75
Stonehage Fleming Financial Services
Jersey
$226M +$187M +2,286,146 New

APH Hedge Fund Activity: Q2 2025 in Review

1,646 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Amphenol (APH) for Q2 2025, worth a combined $115B — up 51% from $75.8B a quarter earlier.

Buyers outnumbered sellers: 327 funds opened new APH positions and 89 closed out — a net gain of 238 holders — while 556 added to existing stakes and 572 trimmed.

The largest buyer was Victory Capital Management, adding an estimated $615M. The largest seller was Vanguard Group, cutting an estimated $1.18B.

  • 1,646 institutional investors held Amphenol (APH) as of Q2 2025, up from 1,424 in Q1 2025.
  • Funds reported $115B of Amphenol stock for Q2 2025, up 51% quarter-over-quarter.
  • 327 funds opened new Amphenol positions in Q2 2025 and 89 closed out, a net change of +238 holders.
  • The largest Amphenol buyer in Q2 2025 was Victory Capital Management, an estimated $615M added.
  • The largest Amphenol seller in Q2 2025 was Vanguard Group, an estimated $1.18B sold.

Based on aggregated 13F filings for Q2 2025.