Whale Analyzer
Top public holders · 13F and disclosure aggregation

Who owns BLDR? 13F holders and whale ownership

BLDR is tracked across public portfolios in Whale Analyzer. This page answers who owns BLDR, which top funds are buying BLDR, aggregate disclosed value, and recent position changes based on public data.

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4Tracked holders
$71.3MAggregate reported value
2026-05-19Page updated
2 new, 1 increased, 1 reducedRecent changes

Top holders

InvestorReported valueSharesChange
Robert Robotti 13F portfolio
Robotti & Co holdings
$43.1M523.6KIncreased
Chris Bloomstran 13F portfolio
Semper Augustus Investments holdings
$18.8M228.2KNew
Turtle Creek Asset Management 13F portfolio
Turtle Creek Asset Management holdings
$7.8M95.0KReduced
Bill Miller 13F portfolio
Miller Value Partners holdings
$1.6M18.9KNew

How to read this page

Values are reported public positions from tracked investors and institutions. They are not real-time ownership totals for the company.

This page is generated from public filings and public disclosures. It is for research and education only and is not investment advice.

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Frequently asked questions

Who owns BLDR stock?

Whale Analyzer tracks 4 public institutional holders of BLDR with a combined reported value of $71.3M. See the holder table above for the largest tracked positions.

Which top funds are buying BLDR?

Check the "Change" column in the holders table above. "New" means a fresh position was initiated, "Added" means an existing position was increased, and "Reduced" or "Sold" indicates trimming.

What does 13F ownership mean for BLDR?

Use the interactive BLDR dashboard on Whale Analyzer for real-time holder analysis, or read our 13F Alpha Signals Guide.