KMX

Carmax

15 superinvestors own KMX

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Thomas Gayner	Markel Group	5.64%	5,379,424	$109.4M	2007Q3	Held
Tom Bancroft	Makaira Partners	5.57%	272,203	$18.3M	2025Q2	Held
Ruane Cunniff	Sequoia Fund	3.49%	6,631,532	$425.3M	2017Q4	Reduced
Hillman Capital Management	Hillman Value Fund	3.15%	109,181	$4.5M	2026Q1	Reduced
Bryan Lawrence	Oakcliff Capital	2.91%	77,276	$4.2M	2020Q1	Reduced
Francois Rochon	Giverny Capital	2.54%	1,670,114	$74.9M	2025Q3	Added
FPA / Steven Romick	FPA Crescent Fund – First Pacific Advisors	1.57%	1,895,606	$79.1M	2006Q3	Reduced
Greg Alexander	Conifer Management	1.16%	272,447	$14.7M	2020Q1	New
Daniel Loeb	Third Point	0.98%	1,100,000	$145.9M	2021Q1	Reduced
Ariel Investments	Ariel Investments (Bobrinskoy & Rogers)	0.26%	561,947	$23.4M	2026Q1	Held
Viking Global Investors	Viking Global Investors	0.21%	794,240	$75.0M	2020Q4	Added
Chuck Akre	Akre Capital Management	0.06%	150,600	$5.8M	2025Q4	Held
Christopher Davis	Davis Selected Advisers	0.00%	3,760	$490K	2021Q4	Held
Bill Nygren	Oakmark Select Fund – Harris Associates	0.00%	1,875	$242K	2021Q2	Held
Dodge & Cox	Dodge & Cox	0.00%	2,550	$213K	2023Q2	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 KMX 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.