Whale Analyzer
Top public holders · 13F and disclosure aggregation

Who owns GRBK-PA? 13F holders and whale ownership

GRBK-PA is tracked across public portfolios in Whale Analyzer. This page answers who owns GRBK-PA, which top funds are buying GRBK-PA, aggregate disclosed value, and recent position changes based on public data. David Einhorn is the largest reported holder at $592M; the top five funds control 100.0% of reported ownership; institutions were net selling last quarter (0 increased, 1 reduced). Top tracked holders include David Einhorn.

Continue to the live GRBK-PA dashboard
NYQ · latest quote
$21.65
-$0.26 (-1.2%)
Open live GRBK-PA dashboard
1Tracked holders
$592.4MAggregate reported value
2026-05-21Page updated
1 reducedRecent changes

Top holders

InvestorReported valueSharesChange
David Einhorn 13F portfolio
Greenlight Capital holdings
$592.4M11.4MReduced

Ownership concentration

Reported ownership of GRBK-PA is highly concentrated across tracked institutions.

Whale activity this quarter

Across 1 tracked institutions, 1 reduced. Net positioning is net selling.

Sector positioning — Consumer Discretionary

GRBK-PA sits within the Consumer Discretionary sector alongside 61 other tracked names. Compare whale ownership across peers:

How to use this page

Values are reported public positions from tracked 13F filers and disclosures — not real-time ownership totals. Open the live GRBK-PA dashboard for price charts and cross-investor scans, or read the SEC 13F guide.

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

Related stock holder pages

Learn more in Whale Analyzer Academy

Deepen your read on GRBK-PA with these Whale Analyzer Academy guides:

Frequently asked questions

Who owns GRBK-PA stock?

Whale Analyzer tracks 1 public institutional holders of GRBK-PA with a combined reported value of $592.4M. See the holder table above for the largest tracked positions.

Which top funds are buying GRBK-PA?

Tracked institutions were net selling last quarter — 1 reduced. Check the "Change" column: "New" = fresh position, "Increased" = added, "Reduced" = trimmed.

How concentrated is GRBK-PA ownership?

The top five tracked holders report 100.0% of aggregate ownership.

What does 13F ownership mean for GRBK-PA?

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