Occidental Petroleum Corporation (OXY) Shareholders & Insider Trades
Occidental Petroleum shareholders at a glance
The largest holder of Occidental Petroleum stock is Berkshire Hathaway Inc., with 264.9 million shares (26.64% of the company), worth about $15.94 billion as of September 25, 2026. The 10 largest holders together own 57.4%.
In Q2 2026, 1,338 institutional holdings reports listed 877.0 million shares worth $41.70 billion, up 9.4% in shares from Q1 2026.
Insiders reported 59 transactions in the last two years: no sales and 4 purchases. The newest one on file is from July 31, 2026 (Pollack Brad, General Counsel).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through July 31, 2026.
Occidental Petroleum Corporation
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Occidental Petroleum shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Berkshire Hathaway Inc. | 264.9 million | 26.64% | $15.9B |
| Dodge & Cox | 72.8 million | 7.32% | $4.4B |
| Vanguard Capital Management LLC | 48.1 million | 4.84% | $2.9B |
| State Street Corporation | 46.1 million | 4.64% | $2.8B |
| BlackRock Advisors LLC | 45.1 million | 4.54% | $2.7B |
| Vanguard Portfolio Management LLC | 39.5 million | 3.97% | $2.4B |
| Geode Capital Management LLC | 19.9 million | 2.00% | $1.2B |
| Invesco Advisers, Inc. | 12.7 million | 1.28% | $767.0M |
| AQR Capital Management LLC | 11.5 million | 1.15% | $690.0M |
| H&H International Investment LLC | 10.3 million | 1.03% | $618.0M |
As of September 25, 2026.
Occidental Petroleum institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,338 | 877.0 million | $41.7B |
| Q1 2026 | 1,393 | 802.0 million | $52.1B |
| Q4 2025 | 1,222 | 766.0 million | $31.5B |
| Q3 2025 | 1,264 | 764.0 million | $36.1B |
| Q2 2025 | 1,235 | 753.0 million | $31.7B |
| Q1 2025 | 1,296 | 743.0 million | $36.6B |
| Q4 2024 | 1,321 | 720.0 million | $35.6B |
| Q3 2024 | 1,311 | 726.0 million | $37.4B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Occidental Petroleum insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Pollack Brad | Jul 31, 2026 | General Counsel | Stock Award(Grant) at price 0.00 per share. | – |
| Jackson Richard A. | Jun 23, 2026 | Chief Executive Officer | Purchase at price 52.38 per share. | $249,853 |
| Hollub Vicki A. | Jun 1, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Jackson Richard A. | Jun 1, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Gutierrez Carlos M. | May 4, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Shearer Bob | May 4, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Poladian Avedick Baruyr | May 4, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Gould Andrew Frederic James | May 4, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Moore Jack B | May 4, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Bailey Vicky A | May 4, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Robinson Kenneth B. | May 4, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Oneill Claire | May 4, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 59 insider transactions in the last two years.
Questions and answers
Who owns the most Occidental Petroleum stock?
Berkshire Hathaway Inc., with 26.64% of the company (as of September 25, 2026). Next: Dodge & Cox (7.32%) and Vanguard Capital Management LLC (4.84%).
How many institutions own Occidental Petroleum stock?
1,338 institutional holdings reports listed Occidental Petroleum shares in Q2 2026, 877.0 million shares in all worth $41.70 billion.
Are Occidental Petroleum insiders buying or selling the stock?
In the last two years insiders reported no sales and 4 purchases (59 transactions in all); the newest on file is from July 31, 2026.
