Occidental Petroleum Corporation (OXY) Institutional Ownership

Based on Q1 2026 13F filings, institutional ownership of Occidental Petroleum Corporation stands at 99.0%, held across 1,272 reporting institutions.

BERKSHIRE HATHAWAY INC is the largest reported institutional holder of OXY, with approximately 264,941,431 shares worth $17.22B as of Q1 2026.

Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of OXY, including BERKSHIRE HATHAWAY INC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.

Our composite Smart Money Score for OXY is 80 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.

306 institutions opened new positions in OXY during Q1 2026, while 116 fully exited. 866 added to existing positions and 93 trimmed.

OXY institutional ownership rose by 42.46 percentage points quarter-over-quarter, with a net change of +190 holders.

The top 10 institutions account for 72.2% of all reported 13F value in OXY, and the top 25 account for 83.9%.

All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.