Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
1,265 institutional managers reported holding OXY for the quarter ended Mar 31, 2026. Together they hold about 79% of shares outstanding; the top 10 hold 59%. 273 opened new positions; 109 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Berkshire Hathaway (focused) | 264.94M | 26.31% | $17.21B | unchanged | 2022 Q1 |
| Vanguard Group | 91.06M | 9.04% | $5.92B | added +1.2% | ≤2013 |
| Dodge & Cox | 74.09M | 7.36% | $4.81B | trimmed -6.8% | ≤2013 |
| BlackRock | 52.64M | 5.23% | $3.42B | added +4% | ≤2013 |
| State Street | 43.27M | 4.30% | $2.81B | added +9.4% | ≤2013 |
| Geode Capital | 19.37M | 1.92% | $1.26B | added +2.8% | ≤2013 |
| GQG Partners | 18.31M | 1.82% | $1.19B | opened | 2026 Q1 |
| Morgan Stanley | 10.98M | 1.09% | $713.2M | trimmed -3.7% | ≤2013 |
| H&H International Investment, LLC (focused) | 10.26M | 1.02% | $666.7M | trimmed -22.1% | 2023 Q1 |
| Dimensional Fund Advisors | 10.01M | 0.99% | $650.6M | trimmed -5.6% | ≤2013 |
| AQR Capital | 8.72M | 0.87% | $566.5M | added +229.1% | ≤2013 |
| UBS | 7.92M | 0.79% | $514.7M | trimmed -4.5% | ≤2013 |
| Invesco | 7.56M | 0.75% | $491.3M | added +12.3% | ≤2013 |
| Bank OF America CORP /DE/ | 6.71M | 0.67% | $435.8M | added +7.8% | ≤2013 |
| Northern Trust | 6.50M | 0.65% | $422.1M | unchanged | ≤2013 |
| BNY Mellon | 5.76M | 0.57% | $374.3M | added +44.6% | ≤2013 |
| Charles Schwab Investment Management | 5.64M | 0.56% | $366.1M | added +4.5% | ≤2013 |
| Goldman Sachs | 4.65M | 0.46% | $301.8M | added +4.4% | ≤2013 |
| FMR (Fidelity) | 4.40M | 0.44% | $285.6M | added +49.1% | ≤2013 |
| Legal & General Group PLC | 3.88M | 0.39% | $252.0M | unchanged | ≤2013 |
| Barclays PLC | 3.80M | 0.38% | $247.1M | added +49.6% | ≤2013 |
| Scharf Investments, LLC | 3.58M | 0.36% | $232.8M | added +21.9% | 2024 Q2 |
| Two Sigma | 3.55M | 0.35% | $230.6M | added +43.7% | 2023 Q4 |
| Smead Capital Management, INC. (focused) | 3.10M | 0.31% | $201.1M | trimmed -12.7% | 2021 Q3 |
| Deutsche Bank AG\ | 3.03M | 0.30% | $197.1M | added +92.3% | 2013 Q3 |
| Amundi | 2.98M | 0.30% | $193.6M | added +2.7% | ≤2013 |
| Point72 | 2.68M | 0.27% | $174.1M | added +229.2% | 2014 Q2 |
| Raymond James Financial INC | 2.47M | 0.25% | $160.6M | added +145.1% | ≤2013 |
| Nuveen | 2.30M | 0.23% | $149.2M | added +32% | ≤2013 |
| Cooke & Bieler LP | 2.24M | 0.22% | $145.3M | trimmed -29% | 2024 Q1 |
| Tidal Investments LLC | 2.22M | 0.22% | $144.4M | added +39.6% | 2020 Q2 |
| Swiss National Bank | 2.17M | 0.21% | $140.9M | added +7.2% | ≤2013 |
| Balyasny Asset Management | 2.06M | 0.20% | $134.1M | trimmed -13.6% | 2022 Q3 |
| American Century Companies INC | 2.01M | 0.20% | $130.9M | added +15.2% | ≤2013 |
| Millennium Management | 1.97M | 0.20% | $127.8M | added +66.9% | ≤2013 |
| Mitsubishi UFJ Asset Management CO., LTD. | 1.94M | 0.19% | $126.2M | added +5.5% | ≤2013 |
| BNP Paribas Financial Markets | 1.89M | 0.19% | $122.7M | added +22.6% | ≤2013 |
| SEI Investments CO | 1.73M | 0.17% | $112.7M | added +247% | ≤2013 |
| Sumitomo Mitsui Trust Group, INC. | 1.69M | 0.17% | $109.5M | added +4.1% | ≤2013 |
| Adams Asset Advisors, LLC | 1.68M | 0.17% | $109.3M | trimmed -48.7% | ≤2013 |
| First Trust Advisors LP | 1.64M | 0.16% | $106.3M | added +41% | 2017 Q2 |
| Citigroup INC | 1.47M | 0.15% | $95.8M | added +21.7% | ≤2013 |
| Himalaya Capital Management LLC (focused) | 1.47M | 0.15% | $95.3M | unchanged | 2024 Q2 |
| Royal Bank OF Canada | 1.45M | 0.14% | $94.4M | added +25.8% | ≤2013 |
| CalPERS | 1.30M | 0.13% | $84.2M | added +1.9% | ≤2013 |
| Worldquant Millennium Advisors LLC | 1.23M | 0.12% | $79.6M | added +5761.3% | 2025 Q4 |
| Rhumbline Advisers | 1.21M | 0.12% | $78.8M | trimmed -2.9% | ≤2013 |
| Holocene Advisors | 1.21M | 0.12% | $78.4M | opened | 2025 Q2 |
| Hsbc Holdings PLC | 1.18M | 0.12% | $76.6M | trimmed -5% | ≤2013 |
| Bank OF Montreal /CAN/ | 1.18M | 0.12% | $76.5M | added +1.9% | ≤2013 |
Largest 50 of 1,265 shown; the full ranked, searchable register is at boothcheck.com/holders/OXY. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.