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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
RCA
1151
Roberts Capital Advisors
Colorado
$729K -$646K -5,891 -50%
ATS
1152
Ashton Thomas Securities
New York
$728K +$645K +5,881 New
TCM
1153
Traynor Capital Management
Pennsylvania
$725K +$78.7K +717 +14%
AIM
1154
Athena Investment Management
California
$722K -$43.2K -394 -6%
EE
1155
EWG Elevate
California
$714K +$3.07K +28 +0.5%
ICP
1156
Impact Capital Partners
Colorado
$712K +$134K +1,221 +27%
NB
1157
Nicolet Bankshares
Wisconsin
$711K -$76.4K -696 -11%
CIA
1158
Choate Investment Advisors
Massachusetts
$710K -$1.32K -12 -0.2%
CFP
1159
Catalyst Financial Partners
Massachusetts
$708K +$6.04K +55 +1%
LAM
1160
L2 Asset Management
Massachusetts
$707K +$34.9K +318 +6%
BC
1161
Bowman & Company
Wisconsin
$707K -$7.02K -64 -1%
WPW
1162
Waldron Private Wealth
Pennsylvania
$696K +$123K +1,125 +25%
NPF
1163
Norris Perne & French
Michigan
$696K -$33K -301 -5%
GIM
1164
Generali Investments Management
Slovenia
$696K +$157K +1,428 +34%
SFG
1165
SevenBridge Financial Group
Pennsylvania
$694K -$161K -1,468 -23%
PFPT
1166
Pinnacle Financial Partners (Tennessee)
Tennessee
$690K -$135K -1,229 -18%
WC
1167
Waterloo Capital
Texas
$688K +$271K +2,470 +80%
RT
1168
Rockland Trust
Massachusetts
$688K -$64.6K -589 -10%
SHJ
1169
Sharkey, Howes & Javer
Colorado
$687K – – –
AWP
1170
Ascent Wealth Partners
New York
$685K -$28.5K -260 -4%
RPGK
1171
Retirement Planning Group (Kansas)
Kansas
$682K +$26K +237 +4%
OAJ
1172
Ogorek Anthony Joseph
New York
$679K +$768 +7 +0.1%
AFP
1173
Ausdal Financial Partners
Iowa
$672K +$596K +5,428 New
PAMP
1174
Polar Asset Management Partners
Ontario, Canada
$670K +$594K +5,411 New
PCG
1175
Prosperity Consulting Group
Maryland
$666K +$332K +3,030 +129%
45 46
47
48 49

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.