GRBK vs OXY
Green Brick Partners · Occidental Petroleum
Superinvestor ownership overlap, unique holders, and conviction comparison.
What the ownership overlap reveals
Across 5 tracked superinvestors, no manager holds both GRBK and OXY — the two names draw on entirely separate pools of smart money. GRBK appears in 2 tracked portfolios; OXY in 3, so OXY is the more widely held of the two among tracked managers.
GRBK is a Real Estate holding while OXY sits in Energy — the overlap (or lack of it) partly tracks how each manager allocates across sectors. On the latest 13F cohort, GRBK’s ConvictionScore reads +14 (slight accumulation) against OXY’s +21 (slight accumulation); OXY shows the stronger net-accumulation reading of the pair.
Descriptive comparison of SEC Form 13F filings (45-day reporting lag; filings can be 1–3 months old). Not investment advice — see methodology.
Ownership fingerprint
Who holds GRBK only, who holds OXY only, and who holds both.
- David Einhorn28.7%
- Howard Marks9.4%
No manager holds both GRBK and OXY.
- Prem Watsa13.5%
- Warren Buffett4.9%
- Carl Icahn4.8%
Frequently asked questions
Which has more hedge-fund owners: GRBK or OXY?
GRBK (Green Brick Partners) is held by 2 tracked superinvestors; OXY (Occidental Petroleum) is held by 3. OXY has 1 more tracked holder. Full ranking by % of portfolio in the table below.
What managers hold both GRBK and OXY?
0 tracked superinvestors hold both GRBK and OXY based on the latest SEC 13F filings. Full overlap table below.
What is the overlap between GRBK and OXY institutional ownership?
Across 5 unique tracked holders: 2 hold only GRBK (40%), 0 hold both (0%), 3 hold only OXY (60%). The full Venn split + per-manager position % is on this page.
Sourced from SEC 13F filings (2026). Not investment advice. Methodology.
Reading for your research
Optional background reading on interpreting company disclosures and investing methods. These books do not validate a signal or predict returns.
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