BLDR

BUILDERS FIRSTSOURCE INC

8 superinvestors own BLDR

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

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Greg Alexander	Conifer Management	12.79%	1,200,000	$106.5M	2023Q1	Reduced
Alex Roepers	Atlantic Investment Management	7.09%	119,000	$13.9M	2025Q2	Added
Glenn Greenberg	Brave Warrior Advisors	4.83%	2,372,292	$195.3M	2026Q1	Held
Ruane Cunniff	Sequoia Fund	0.73%	4,107,377	$89.5M	2017Q4	Reduced
Bill Miller	Miller Value Partners	0.41%	18,893	$1.6M	2026Q1	Added
John Armitage	Egerton Capital	0.31%	262,628	$30.6M	2025Q2	New
Francois Rochon	Giverny Capital	0.28%	91,813	$7.6M	2026Q1	Added
Kenneth Fisher	Fisher Asset Management	0.00%	22,361	$2.7M	2025Q3	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 BLDR 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.