APH

AMPHENOL CORP

10 superinvestors own APH

Based on latest 13F filings — data is 45–90 days delayed

Investor	Fund	Weight	Shares	Value	Quarter	Activity
John Armitage	Egerton Capital	4.03%	2,871,353	$362.8M	2026Q1	Reduced
Daniel Loeb	Third Point	1.40%	1,600,000	$104.3M	2024Q3	Reduced
Torray Funds	Torray Investment Partners	1.17%	63,135	$8.0M	2026Q1	Reduced
Jensen Investment Management	Jensen Investment Management	0.56%	225,363	$28.5M	2026Q1	Reduced
Stephen Mandel	Lone Pine Capital	0.22%	223,084	$28.2M	2026Q1	Reduced
First Eagle Investment Management	First Eagle Investment Management	0.20%	1,069,110	$90.5M	2017Q3	Reduced
Ruane Cunniff	Sequoia Fund	0.15%	331,695	$19.5M	2012Q3	Reduced
Wallace Weitz	Weitz Investment Management	0.08%	9,200	$1.2M	2026Q1	New
David Katz	Matrix Asset Advisors	0.04%	3,056	$386K	2026Q1	Held
Kenneth Fisher	Fisher Asset Management	0.00%	5,576	$705K	2026Q1	Reduced

Open-market purchases (P) and sales (S) from SEC Form 4 filings · last 12 months

No open-market insider trades in the last 12 months.

Form 4 filings for option exercises and other transaction types are excluded.

STOCK Act disclosures · last 12 months

Congressional trade data coming soon.

We are sourcing STOCK Act disclosures and will display them here shortly.

What Is SEC Form 4?

Understand the insider trade filings behind APH activity.

What Is a 13F Filing?

How superinvestors disclose their quarterly holdings.

Insider Cluster Buying

Why multiple insiders buying together is a strong signal.

Superinvestor Consensus

The most widely held stocks across all tracked institutions.