Amphenol Corp-cl A (APH) Held by Superinvestors
AMPHENOL CORP-CL A (APH) is currently held by 8 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $1.06B based on the latest available SEC Form 13F filings for the quarter ended September 30, 2026.
Egerton Capital UK is currently the largest disclosed institutional shareholder of APH tracked by InsiderSet, reporting ownership valued at approximately $902.74M in its September 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $849.20M, representing an estimated loss of -5.93% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed APH value among the investors covered in this analysis. Major shareholders include Egerton Capital UK, Jensen Investment Management, Renaissance Technologies LLC, and several other long-term asset managers with concentrated positions in AMPHENOL CORP-CL A (APH).
This page ranks the largest institutional APH shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Egerton Capital UK | John Armitage | 9.19% | 10,708,713 | $902,744,506 | $849,200,941 | -$53,543,565 | -5.93% |
| Jensen Investment Management | Eric H. Schoenstein | 2.63% | 614,660 | $108,376,851 | $48,742,538 | -$59,634,313 | -55.02% |
| Renaissance Technologies LLC | Jim Simons | 0.04% | 152,000 | $26,800,640 | $12,053,600 | -$14,747,040 | -55.02% |
| Torray Fund | Robert Torray | 1.25% | 112,104 | $9,450,367 | $8,889,847 | -$560,520 | -5.93% |
| Sequoia Financial Advisors | 0.04% | 48,655 | $8,578,819 | $3,858,342 | -$4,720,478 | -55.02% | |
| Joho Capital | Robert Karr | 1.31% | 34,080 | $6,008,986 | $2,702,544 | -$3,306,442 | -55.02% |
| Matrix Advisors Value Fund | David Katz | 0.05% | 6,590 | $555,517 | $522,587 | -$32,930 | -5.93% |
| Bares Capital Management | Brian Bares | 0.00% | 353 | $43,684 | $27,993 | -$15,691 | -35.92% |
Frequently asked questions about APH
Who are the largest superinvestors holding APH?
The largest superinvestors holding APH in the latest SEC Form 13F filings include Egerton Capital UK, Jensen Investment Management, Renaissance Technologies LLC, Torray Fund, and Sequoia Financial Advisors. InsiderSet ranks these superinvestors by their latest reported APH position.
What does the APH superinvestors page include?
This page tracks APH positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. AMPHENOL CORP-CL A (APH) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold APH?
InsiderSet currently tracks 8 superinvestors reporting APH holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own APH.
How much APH stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $1.06B in APH holdings for Q3 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value, and it covers the curated superinvestors on this page rather than every institutional filer.
When were APH superinvestor holdings last updated?
The latest APH superinvestor holdings on InsiderSet are based on SEC Form 13F filings for the quarter ended September 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time holdings.
Are superinvestor APH holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by these superinvestors as of the end of the reporting quarter. A superinvestor may have changed its APH position after the reporting date.
Are superinvestors buying or selling APH?
Buying and selling can be analyzed by comparing APH positions across consecutive 13F reporting periods. InsiderSet's APH Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View APH ownership changes.
How have superinvestor APH holdings changed over time?
InsiderSet tracks APH holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.