MCK

MCKESSON CORP

13 superinvestors own MCK

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Michael Burry	Scion Asset Management	6.27%	682,400	$130.5M	2021Q2	Added
Stephen Mandel	Lone Pine Capital	2.71%	392,224	$339.4M	2026Q1	Reduced
Alex Roepers	Atlantic Investment Management	2.36%	274,575	$20.0M	2011Q3	Added
Valley Forge Capital Management	Valley Forge Capital Management	1.22%	27,223	$2.2M	2011Q1	Reduced
Daniel Loeb	Third Point	1.15%	165,000	$76.4M	2023Q4	New
Viking Global Investors	Viking Global Investors	0.32%	142,169	$83.0M	2024Q2	Reduced
Warren Buffett	Berkshire Hathaway	0.25%	2,289,864	$815.3M	2023Q1	Reduced
Richard Pzena	Pzena Investment Management	0.13%	67,079	$38.2M	2024Q4	Held
Thomas Gayner	Markel Group	0.10%	49,400	$1.5M	2005Q2	Held
Kenneth Fisher	Fisher Asset Management	0.00%	903	$782K	2026Q1	Reduced
Jensen Investment Management	Jensen Investment Management	0.00%	92	$2K	2002Q4	Held
Christopher Davis	Davis Selected Advisers	0.00%	0	$3.5M	2008Q2	New
Dodge & Cox	Dodge & Cox	0.00%	2,590	$407K	2016Q1	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 MCK 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.