The largest holder of LyondellBasell Industries stock is Access Industries, Inc. (New York), with 64.4 million shares (19.95% of the company), worth about $4.19 billion as of September 25, 2026. The 10 largest holders together own 55.9%.
In Q2 2026, 950 institutional holdings reports listed 258.0 million shares worth $13.10 billion, up 4.9% in shares from Q1 2026.
Insiders reported 84 transactions in the last two years: 3 sales worth $28.07 million and 4 purchases. The newest one on file is from June 30, 2026 (Kamsky Virginia Ann, Director).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through June 30, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Access Industries, Inc. (New York) | 64.4 million | 19.95% | $4.2B |
| BlackRock Advisors LLC | 23.9 million | 7.40% | $1.6B |
| Vanguard Capital Management LLC | 16.9 million | 5.23% | $1.1B |
| State Street Corporation | 14.7 million | 4.56% | $959.0M |
| Capital Research & Management Co. (World Investors) | 13.8 million | 4.26% | $896.0M |
| Vanguard Portfolio Management LLC | 12.0 million | 3.71% | $780.0M |
| AQR Capital Management LLC | 9.2 million | 2.85% | $600.0M |
| Davis Selected Advisers LP | 8.7 million | 2.69% | $566.0M |
| Eaton Vance Management | 8.6 million | 2.68% | $563.0M |
| Fidelity Management & Research Co. LLC | 8.3 million | 2.56% | $539.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 950 | 258.0 million | $13.1B |
| Q1 2026 | 1,004 | 246.0 million | $19.8B |
| Q4 2025 | 868 | 236.0 million | $10.2B |
| Q3 2025 | 894 | 223.0 million | $10.9B |
| Q2 2025 | 962 | 244.0 million | $13.9B |
| Q1 2025 | 1,027 | 237.0 million | $17.9B |
| Q4 2024 | 1,049 | 233.0 million | $17.3B |
| Q3 2024 | 1,105 | 236.0 million | $22.6B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Kamsky Virginia Ann | Jun 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Karlin Bridget E | Jun 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Farley Claire Scobee | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Kamsky Virginia Ann | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Griffin Rita E | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Karlin Bridget E | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Dudley Robert W | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Manifold Albert Jude | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Hanley Michael Sean | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Buchanan Robin William Turnbull | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Aigrain Jacques | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Chase Anthony R. | May 21, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 84 insider transactions in the last two years.
Access Industries, Inc. (New York), with 19.95% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (7.40%) and Vanguard Capital Management LLC (5.23%).
950 institutional holdings reports listed LyondellBasell Industries shares in Q2 2026, 258.0 million shares in all worth $13.10 billion.
In the last two years insiders reported 3 sales and 4 purchases (84 transactions in all); the newest on file is from June 30, 2026.