Who owns LyondellBasell Industries N.V. (LYB)
Which tracked institutional funds hold LYB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See LYB company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on LYB is one-sided between 2025-Q4 and 2026-Q1: 495 added or opened and 90 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
LYB’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes LYB more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in LYB divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 925 tracked filers holding LYB, 548 increased or opened the position and 402 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in LYB between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 118
- VANGUARD CAPITAL MANAGEMENT LLC$1.4B
- VANGUARD PORTFOLIO MANAGEMENT LLC$966M
- Capital International Investors$471M
- DAVIS SELECTED ADVISERS$451M
- Holocene Advisors, LP$228M
- AGF MANAGEMENT LTD$186M
Full exits 47
- VANGUARD GROUP INC$1.3B
- Swiss Life Asset Management Ltd$28M
- Jefferies Financial Group Inc.$21M
- TUDOR INVESTMENT CORP ET AL$16M
- Verity & Verity, LLC$14M
- Marathon Asset Management Ltd$13M
Largest adds
- DODGE & COX$626M
- Capital World Investors$520M
- STATE STREET CORP$502M
- FMR LLC$486M
- Capital Research Global Investors$426M
- GEODE CAPITAL MANAGEMENT, LLC$262M
Largest trims
- CHARLES SCHWAB INVESTMENT MANAGEMENT INC$224M
- FULLER & THALER ASSET MANAGEMENT, INC.$49M
- CANADA PENSION PLAN INVESTMENT BOARD$43M
- D. E. Shaw & Co., Inc.$35M
- WORLDQUANT MILLENNIUM ADVISORS LLC$33M
- BNP PARIBAS ASSET MANAGEMENT Holding S.A.$16M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 20,169,540 | $1.6B | 8.4% | 2026-Q1 |
| DODGE & COX trimmed | 16,839,152 | $1.4B | 7.0% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 16,759,788 | $1.4B | 7.0% | 2026-Q1 |
| STATE STREET CORP trimmed | 13,509,115 | $1.1B | 5.6% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 11,992,716 | $966M | 5.0% | 2026-Q1 |
| Capital World Investors added | 11,749,410 | $947M | 4.9% | 2026-Q1 |
| Capital Research Global Investors added | 10,205,644 | $822M | 4.2% | 2026-Q1 |
| FMR LLC added | 8,518,205 | $686M | 3.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 6,945,441 | $563M | 2.9% | 2026-Q1 |
| MORGAN STANLEY trimmed | 6,668,733 | $537M | 2.8% | 2026-Q1 |
| Capital International Investors added | 5,851,711 | $471M | 2.4% | 2026-Q1 |
| DAVIS SELECTED ADVISERS new | 5,596,588 | $451M | 2.3% | 2026-Q1 |
| Invesco Ltd. trimmed | 4,980,672 | $401M | 2.1% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 4,220,282 | $340M | 1.8% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 3,652,118 | $301M | 1.6% | 2026-Q1 |
| ROYAL BANK OF CANADA added | 3,534,647 | $285M | 1.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 2,914,974 | $235M | 1.2% | 2026-Q1 |
| Holocene Advisors, LP added | 2,835,183 | $228M | 1.2% | 2026-Q1 |
| UBS Group AG added | 2,828,696 | $228M | 1.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 2,654,786 | $214M | 1.1% | 2026-Q1 |
| NORTHERN TRUST CORP added | 2,453,727 | $198M | 1.0% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 2,322,614 | $187M | 1.0% | 2026-Q1 |
| AGF MANAGEMENT LTD added | 2,310,951 | $186M | 1.0% | 2026-Q1 |
| Bank of New York Mellon Corp added | 1,848,621 | $149M | 0.8% | 2026-Q1 |
| Ensign Peak Advisors, Inc added | 1,794,964 | $145M | 0.7% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 1,778,352 | $143M | 0.7% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 1,705,438 | $137M | 0.7% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 1,547,735 | $125M | 0.6% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,530,275 | $123M | 0.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,504,143 | $121M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 1,449,557 | $117M | 0.6% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,328,538 | $107M | 0.6% | 2026-Q1 |
| NORGES BANK added | 1,490,426 | $105M | 0.5% | 2026-Q1 |
| LORD, ABBETT & CO. LLC added | 1,295,706 | $104M | 0.5% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 1,214,091 | $98M | 0.5% | 2026-Q1 |
| Legal & General Group Plc trimmed | 1,204,092 | $97M | 0.5% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 1,119,680 | $90M | 0.5% | 2026-Q1 |
| Woodline Partners LP added | 1,075,414 | $87M | 0.4% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 987,302 | $80M | 0.4% | 2026-Q1 |
| THORNBURG INVESTMENT MANAGEMENT INC | 977,081 | $79M | 0.4% | 2026-Q1 |
| BARCLAYS PLC added | 948,512 | $76M | 0.4% | 2026-Q1 |
| CINCINNATI INSURANCE CO | 885,666 | $71M | 0.4% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 866,688 | $70M | 0.4% | 2026-Q1 |
| Hosking Partners LLP added | 863,114 | $70M | 0.4% | 2026-Q1 |
| Amundi trimmed | 842,525 | $68M | 0.4% | 2026-Q1 |
| HRT FINANCIAL LP added | 841,835 | $68M | 0.4% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 797,262 | $64M | 0.3% | 2026-Q1 |
| Nuveen, LLC added | 776,174 | $63M | 0.3% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 761,228 | $61M | 0.3% | 2026-Q1 |
| Swiss National Bank added | 755,700 | $61M | 0.3% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN added | 692,069 | $56M | 0.3% | 2026-Q1 |
| SAMLYN CAPITAL, LLC added | 686,229 | $55M | 0.3% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 660,081 | $53M | 0.3% | 2026-Q1 |
| Merewether Investment Management, LP new | 654,687 | $53M | 0.3% | 2026-Q1 |
| Gotham Asset Management, LLC added | 631,787 | $51M | 0.3% | 2026-Q1 |
| PointState Capital LP added | 616,792 | $50M | 0.3% | 2026-Q1 |
| LPL Financial LLC trimmed | 615,889 | $50M | 0.3% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 600,548 | $48M | 0.2% | 2026-Q1 |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. added | 588,296 | $47M | 0.2% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 588,261 | $47M | 0.2% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 578,453 | $47M | 0.2% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 562,752 | $45M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 492,563 | $40M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 471,066 | $39M | 0.2% | 2026-Q1 |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. new | 484,109 | $39M | 0.2% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 482,928 | $39M | 0.2% | 2026-Q1 |
| WORLDQUANT MILLENNIUM ADVISORS LLC trimmed | 473,259 | $38M | 0.2% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 463,399 | $37M | 0.2% | 2026-Q1 |
| HSBC HOLDINGS PLC added | 446,642 | $36M | 0.2% | 2026-Q1 |
| Korea Investment CORP added | 440,335 | $35M | 0.2% | 2026-Q1 |
| Allianz Asset Management GmbH trimmed | 437,683 | $35M | 0.2% | 2026-Q1 |
| AE Wealth Management LLC added | 431,555 | $35M | 0.2% | 2026-Q1 |
| Summit Street Capital Management, LLC trimmed | 419,514 | $34M | 0.2% | 2026-Q1 |
| Mercuria Capital Strategies, LLC new | 407,122 | $33M | 0.2% | 2026-Q1 |
| Ninety One UK Ltd trimmed | 380,948 | $31M | 0.2% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 365,832 | $29M | 0.2% | 2026-Q1 |
| ALPS ADVISORS INC trimmed | 364,350 | $29M | 0.2% | 2026-Q1 |
| California Public Employees Retirement System trimmed | 363,286 | $29M | 0.2% | 2026-Q1 |
| BANK OF MONTREAL /CAN/ added | 361,399 | $29M | 0.2% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 361,413 | $29M | 0.2% | 2026-Q1 |
| Ceredex Value Advisors LLC trimmed | 355,689 | $29M | 0.1% | 2026-Q1 |
| Grantham, Mayo, Van Otterloo & Co. LLC trimmed | 355,385 | $29M | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 320,129 | $26M | 0.1% | 2026-Q1 |
| DekaBank Deutsche Girozentrale | 294,321 | $25M | 0.1% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC trimmed | 305,423 | $25M | 0.1% | 2026-Q1 |
| AustralianSuper Pty Ltd trimmed | 303,136 | $24M | 0.1% | 2026-Q1 |
| South Dakota Investment Council trimmed | 293,471 | $24M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 293,166 | $24M | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 286,812 | $23M | 0.1% | 2026-Q1 |
| Yaupon Capital Management LP new | 282,151 | $23M | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 273,369 | $22M | 0.1% | 2026-Q1 |
| Gradient Investments LLC trimmed | 271,483 | $22M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 30,460,254 | $1.3B | 6.8% | 2025-Q4 stale |
| Epoch Investment Partners, Inc. added | 1,171,103 | $57M | 0.3% | 2025-Q3 stale |
| Slate Path Capital LP new | 1,126,800 | $55M | 0.3% | 2025-Q3 stale |
| Orbis Allan Gray Ltd new | 1,064,208 | $52M | 0.3% | 2025-Q3 stale |
| Brandywine Global Investment Management, LLC added | 487,971 | $34M | 0.2% | 2025-Q1 stale |
| Swiss Life Asset Management Ltd trimmed | 647,205 | $28M | 0.1% | 2025-Q4 stale |
| First Horizon Advisors, Inc. added | 476,628 | $28M | 0.1% | 2025-Q2 stale |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 385,918 | $22M | 0.1% | 2025-Q2 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.