Occidental Petroleum Corporation (OXY) ownership: Top institutional holder: Berkshire Hathaway Inc ($17.22B). Insider activity: Net Seller (7 buys, 13 sells). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| Berkshire Hathaway Inc | 264941431.00 | $17.22B | 2026-03-31 |
| Dodge & Cox | 74085572.00 | $4.82B | 2026-03-31 |
| VANGUARD GROUP INC | 89900677.00 | $3.70B | 2025-12-31 |
| BlackRock, Inc. | 52637811.00 | $3.42B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 47412976.00 | $3.08B | 2026-03-31 |
| STATE STREET CORP | 43270797.00 | $2.82B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 36185199.00 | $2.35B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 19368894.00 | $1.25B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Buy | null | 2026-06-01 | |
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-06-01 | |
| Buy | null | 2026-06-01 | |
| Buy | null | 2026-05-04 | |
| Sell | null | 2026-05-04 | |
| Sell | null | 2026-05-04 | |
| Sell | null | 2026-05-04 |
Back to OXY overview · OXY earnings · All congressional trades
Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.