WAT

WATERS CORP

11 superinvestors own WAT

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Terry Smith	Fundsmith	6.81%	4,728,994	$915.5M	2018Q2	New
AKO Capital	AKO Capital	4.76%	816,929	$243K	2026Q1	Added
Ruane Cunniff	Sequoia Fund	1.80%	1,135,909	$219.4M	2017Q4	Reduced
Viking Global Investors	Viking Global Investors	1.05%	1,256,462	$374.2M	2026Q1	Added
Robert Olstein	Olstein Capital Management	0.65%	10,000	$3K	2026Q1	New
First Eagle Investment Management	First Eagle Investment Management	0.62%	1,575,187	$469.1M	2026Q1	New
William Von Mueffling	Cantillon Capital Management	0.35%	140,990	$15.3M	2014Q1	Reduced
Jensen Investment Management	Jensen Investment Management	0.23%	38,766	$11.5M	2026Q1	Held
Bill Nygren	Oakmark Select Fund – Harris Associates	0.11%	288,712	$86.0M	2026Q1	Added
Mairs & Power	Mairs & Power Growth Fund	0.00%	958	$286K	2026Q1	New
Kenneth Fisher	Fisher Asset Management	0.00%	12,178	$258K	2003Q1	New

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 WAT 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.