Amphenol
APH
1,829 hedge funds and large institutions have $141B invested in Amphenol in 2025 Q3 according to their latest regulatory filings, with 285 funds opening new positions, 721 increasing their positions, 622 reducing their positions, and 85 closing their positions.
235% more first-time investments, than exits
New positions opened: 285 | 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: 622
11% more funds holding
Funds holding: 1,648 → 1,829 (+181)
2.7% less ownership
Funds ownership: 96.05% → 93.35% (-2.7%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Capital International Investors
Los Angeles,
California
|
+$1.61B |
| 2 |
Capital Research Global Investors
Los Angeles,
California
|
+$880M |
| 3 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$698M |
| 4 |
BlackRock
New York
|
+$690M |
| 5 |
Winslow Capital Management
Minneapolis,
Minnesota
|
+$486M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
-$1.68B |
| 2 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$1.04B |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
-$971M |
| 4 |
Bank of New York Mellon
New York
|
-$469M |
| 5 |
D.E. Shaw & Co
New York
|
-$265M |
APH Hedge Fund Activity: Q3 2025 in Review
1,829 of the 7,638 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: 285 funds opened new APH positions and 85 closed out — a net gain of 200 holders — while 721 added to existing stakes and 622 trimmed.
The largest buyer was Capital International Investors, adding an estimated $1.61B. The largest seller was Vanguard Group, cutting an estimated $1.68B.
- 1,829 institutional investors held Amphenol (APH) as of Q3 2025, up from 1,648 in Q2 2025.
- Funds reported $141B of Amphenol stock for Q3 2025, up 23% quarter-over-quarter.
- 285 funds opened new Amphenol positions in Q3 2025 and 85 closed out, a net change of +200 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.