Who owns LyondellBasell Industries (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-Q2 13F filings (latest filed 2026-09-22). 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 2026-Q1 and 2026-Q2: 138 added or opened and 423 trimmed or exited — on balance reducing.
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 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
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 2026-Q1 and 2026-Q2, across 830 tracked filers holding LYB, 446 increased or opened the position and 497 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 2026-Q1 and 2026-Q2 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 45
- Qube Research & Technologies Ltd$149M
- Swiss Life Asset Management Ltd$33M
- TUDOR INVESTMENT CORP ET AL$23M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$22M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$21M
- Campbell & CO Investment Adviser LLC$12M
Full exits 100
- DODGE & COX$1.4B
- Holocene Advisors, LP$228M
- LORD, ABBETT & CO. LLC$104M
- Amundi$68M
- HRT FINANCIAL LP$68M
- Merewether Investment Management, LP$53M
Largest adds
- Man Group plc$166M
- AQR CAPITAL MANAGEMENT LLC$146M
- NORGES BANK$98M
- TWO SIGMA INVESTMENTS, LP$83M
- D. E. Shaw & Co., Inc.$46M
- JANE STREET GROUP, LLC$39M
Largest trims
- Capital Research Global Investors$737M
- VANGUARD CAPITAL MANAGEMENT LLC$461M
- VANGUARD PORTFOLIO MANAGEMENT LLC$335M
- STATE STREET CORP$312M
- Capital International Investors$308M
- FMR LLC$250M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 29,298,859 | $1.5B | 13.5% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 16,882,431 | $889M | 7.8% | 2026-Q2 |
| STATE STREET CORP added | 14,734,948 | $776M | 6.8% | 2026-Q2 |
| Capital World Investors added | 13,773,272 | $725M | 6.3% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 11,984,747 | $631M | 5.5% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 9,224,314 | $486M | 4.2% | 2026-Q2 |
| DAVIS SELECTED ADVISERS added | 8,698,852 | $458M | 4.0% | 2026-Q2 |
| MORGAN STANLEY added | 8,648,430 | $455M | 4.0% | 2026-Q2 |
| FMR LLC trimmed | 8,281,129 | $436M | 3.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 7,320,242 | $388M | 3.4% | 2026-Q2 |
| Invesco Ltd. added | 5,036,171 | $265M | 2.3% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 4,695,945 | $247M | 2.2% | 2026-Q2 |
| NORGES BANK added | 3,852,404 | $203M | 1.8% | 2026-Q2 |
| Man Group plc added | 3,260,990 | $172M | 1.5% | 2026-Q2 |
| Capital International Investors trimmed | 3,099,251 | $163M | 1.4% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 2,883,144 | $155M | 1.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 2,882,580 | $152M | 1.3% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 2,835,116 | $149M | 1.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 2,681,585 | $141M | 1.2% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 2,430,888 | $128M | 1.1% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 2,363,125 | $124M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 2,354,867 | $124M | 1.1% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 2,137,302 | $113M | 1.0% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 1,841,647 | $97M | 0.8% | 2026-Q2 |
| BARCLAYS PLC added | 1,690,946 | $89M | 0.8% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 1,636,746 | $86M | 0.8% | 2026-Q2 |
| Capital Research Global Investors trimmed | 1,611,673 | $85M | 0.7% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 1,609,590 | $85M | 0.7% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 1,464,270 | $77M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 1,450,013 | $76M | 0.7% | 2026-Q2 |
| UBS Group AG trimmed | 1,413,598 | $74M | 0.6% | 2026-Q2 |
| Legal & General Group Plc added | 1,273,574 | $67M | 0.6% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 1,272,658 | $67M | 0.6% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 1,229,553 | $65M | 0.6% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 990,499 | $52M | 0.5% | 2026-Q2 |
| CINCINNATI INSURANCE CO | 885,666 | $47M | 0.4% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 884,436 | $47M | 0.4% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 834,498 | $44M | 0.4% | 2026-Q2 |
| Hosking Partners LLP trimmed | 820,140 | $43M | 0.4% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 796,580 | $42M | 0.4% | 2026-Q2 |
| Woodline Partners LP trimmed | 792,544 | $42M | 0.4% | 2026-Q2 |
| Swiss National Bank trimmed | 726,700 | $38M | 0.3% | 2026-Q2 |
| Gotham Asset Management, LLC added | 705,700 | $37M | 0.3% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 671,626 | $54M | 0.5% | 2026-Q2 |
| Allianz Asset Management GmbH added | 668,190 | $36M | 0.3% | 2026-Q2 |
| SAMLYN CAPITAL, LLC trimmed | 658,815 | $35M | 0.3% | 2026-Q2 |
| CITIGROUP INC added | 648,257 | $34M | 0.3% | 2026-Q2 |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. added | 645,626 | $34M | 0.3% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. added | 638,626 | $34M | 0.3% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 634,322 | $33M | 0.3% | 2026-Q2 |
| Nuveen, LLC trimmed | 627,594 | $33M | 0.3% | 2026-Q2 |
| Swiss Life Asset Management Ltd trimmed | 618,389 | $33M | 0.3% | 2026-Q2 |
| Trexquant Investment LP added | 611,288 | $32M | 0.3% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 608,492 | $32M | 0.3% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 588,037 | $31M | 0.3% | 2026-Q2 |
| Vanguard Global Advisers, LLC added | 582,253 | $31M | 0.3% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 559,609 | $29M | 0.3% | 2026-Q2 |
| LPL Financial LLC trimmed | 537,824 | $28M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 533,788 | $28M | 0.2% | 2026-Q2 |
| AE Wealth Management LLC added | 526,552 | $28M | 0.2% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 516,332 | $27M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System added | 499,709 | $26M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 490,034 | $26M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 487,459 | $26M | 0.2% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 461,504 | $24M | 0.2% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 460,559 | $24M | 0.2% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 441,116 | $23M | 0.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 438,634 | $23M | 0.2% | 2026-Q2 |
| ALPS ADVISORS INC added | 431,375 | $23M | 0.2% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 420,894 | $22M | 0.2% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 409,055 | $22M | 0.2% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 404,051 | $21M | 0.2% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 397,798 | $21M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 393,592 | $21M | 0.2% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 358,263 | $19M | 0.2% | 2026-Q2 |
| Mariner, LLC added | 345,883 | $18M | 0.2% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 341,770 | $18M | 0.2% | 2026-Q2 |
| Engineers Gate Manager LP added | 341,172 | $18M | 0.2% | 2026-Q2 |
| Korea Investment CORP trimmed | 340,778 | $18M | 0.2% | 2026-Q2 |
| DANSKE BANK A/S added | 336,784 | $18M | 0.2% | 2026-Q2 |
| Summit Street Capital Management, LLC trimmed | 336,501 | $18M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 325,538 | $17M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 299,597 | $16M | 0.1% | 2026-Q2 |
| Mitsubishi UFJ Trust & Banking Corp added | 283,083 | $15M | 0.1% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 281,795 | $15M | 0.1% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 281,745 | $15M | 0.1% | 2026-Q2 |
| ROYAL LONDON ASSET MANAGEMENT LTD added | 275,583 | $15M | 0.1% | 2026-Q2 |
| Gradient Investments LLC trimmed | 268,697 | $14M | 0.1% | 2026-Q2 |
| Cerity Partners LLC added | 268,452 | $14M | 0.1% | 2026-Q2 |
| Ensign Peak Advisors, Inc trimmed | 267,978 | $14M | 0.1% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 266,026 | $14M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 262,653 | $14M | 0.1% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 258,058 | $14M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 246,982 | $13M | 0.1% | 2026-Q2 |
| BANK OF NOVA SCOTIA added | 234,764 | $12M | 0.1% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 230,100 | $12M | 0.1% | 2026-Q2 |
| Campbell & CO Investment Adviser LLC added | 226,974 | $12M | 0.1% | 2026-Q2 |
| CIBC Bancorp USA Inc. added | 226,586 | $12M | 0.1% | 2026-Q2 |
| AVIVA PLC added | 225,882 | $12M | 0.1% | 2026-Q2 |
| PFA Pension, Forsikringsaktieselskab added | 223,846 | $12M | 0.1% | 2026-Q2 |
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.