APH
Amphenol Corp-cl A
7 of the 83 super-investors we track hold APH, worth a combined $1.12B per their latest 13F filings. The largest position: John Armitage at 8.3% of their portfolio. This quarter the cohort logged 1 buy and 1 sell on the name. Conviction score: 37 of 100 (how strongly the cohort backs it) — ranked #150 of 742 stocks. The stock is up 14.9x since a tracked investor first held it at conviction size (Q1 2014 or earlier).
Held through it: Torray Funds (49q straight), Jensen Investment Management (49q straight), John Armitage (5q straight) and 5 more. All multibaggers the cohort held →
Why super-investors own APH
APH is held by 7 super-investors in our cohort, with a combined position value of $1.1B. The highest-conviction owner is John Armitage at 8.3% of their portfolio. Cohort ownership has grown from 6 to 7 over the last four quarters — net interest is rising. This quarter the cohort registered 1 added, 1 exited.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q3 → 2026Q2How many of the cohort members held this stock each quarter.
Owners (7) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | John Armitage | 8.3% | 6q | $858M | 4,866,688 |
| 2 | Joel Greenblatt | 0.1% | 38q | $138M | 783,629 |
| 3 | Jensen Investment Management | 2.6% | 40q | $108M | 614,660 |
| 4 | Torray Funds | 1.4% | 40q | $10M | 59,235 |
| 5 | Wallace Weitz | 0.1% | 2q | $2M | 9,200 |
| 6 | Lee Ainslie | <0.1% | 2q | $1M | 6,423 |
| 7 | David Katz | <0.1% | 8q | $539K | 3,056 |
- 1John Armitageport8.3%val$858M4,866,688 sh·6q held
- 2Joel Greenblattport0.1%val$138M783,629 sh·38q held
- 3Jensen Investment Managementport2.6%val$108M614,660 sh·40q held
- 4Torray Fundsport1.4%val$10M59,235 sh·40q held
- 5Wallace Weitzport0.1%val$2M9,200 sh·2q held
- 6Lee Ainslieport<0.1%val$1M6,423 sh·2q held
- 7David Katzport<0.1%val$539K3,056 sh·8q held
Owners of APH also hold
Congress is trading APH
Congress tracker →- Rick Larsenbought$1,001 - $15,000 · 2026-07-08
- Valerie Hoylesold$1,001 - $15,000 · 2025-09-23
- Byron Donaldsbought$1,001 - $15,000 · 2025-04-10
- Byron Donaldsbought$1,001 - $15,000 · 2025-04-10
- Rob Bresnahanbought$1,001 - $15,000 · 2025-04-08
- James Comerbought$1,001 - $15,000 · 2025-01-02
STOCK Act periodic transaction reports; amounts are disclosed ranges. Who files late →
Recent activity (2)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Stephen Mandel | EXIT | 0.2% | -100% | $0 | Aug 14, 2026 |
| John Armitage | ADD | 8.3% | +69% | $858M | Jul 21, 2026 |
Long US equity 13F-HR filings only. CUSIP 032095101. Not investment advice.