WLK · Company research
Westlake Corporation (WLK): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
80records availableBasic Materials
Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| Orbis Allan Gray Ltd | 1663865 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2080399 | 151869127 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Activest Wealth Management | 1883134 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 140 | 10220 | — | — | — | Jul 16, 2026 | SEC_13F_DATASET |
| AMERICAN CENTURY COMPANIES INC | 748054 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24162 | 1763861 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Bayforest Capital Ltd | 2048423 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2728 | 199144 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| WELLINGTON MANAGEMENT GROUP LLP | 902219 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 77679 | 5670567 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Bleakley Financial Group, LLC | 1936953 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15907 | 1161186 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| MAI Capital Management | 1040197 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3579 | 261267 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | 1367401 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 268434 | 19595682 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Verition Fund Management LLC | 1454027 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17000 | 1241000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1464223 | 106888279 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| MetLife Investment Management, LLC | 1529735 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16031 | 1170263 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VICTORY CAPITAL MANAGEMENT INC | 1040188 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5297 | 386681 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Storgate, LLC | 2110835 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13795 | 1007035 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| JONES FINANCIAL COMPANIES LLLP | 815917 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 487 | 37288 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Capital World Investors | 1422849 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2842348 | 207491404 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| IEQ CAPITAL, LLC | 1779789 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6267 | 457485 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Financial Management Professionals, Inc. | 1568132 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 500 | 11130 | — | — | — | Jul 9, 2026 | SEC_13F_DATASET |
| Cetera Investment Advisers | 1666741 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3437 | 250920 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| LPL Financial LLC | 1403438 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14787 | 1079463 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| State of New Jersey Common Pension Fund D | 1483066 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12965 | 946445 | — | — | — | Aug 4, 2026 | SEC_13F_DATASET |
| Focus Partners Wealth | 1542153 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5312 | 387780 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Gilman Hill Asset Management, LLC | 1551969 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 88279 | 1965091 | — | — | — | Jul 9, 2026 | SEC_13F_DATASET |
| 3 FACTOR INDEXING, LLC | 2135169 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1 | 73 | — | — | — | Jul 8, 2026 | SEC_13F_DATASET |
| OSAIC HOLDINGS, INC. | 1677044 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1 | 73 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Entropy Technologies, LP | 1976151 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20610 | 1504530 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Rakuten Securities, Inc. | 2009539 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 51 | 3723 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Scientech Research LLC | 2011556 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4813 | 351349 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Curi Capital, LLC | 1332905 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3841 | 280393 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC | 922127 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12363 | 902499 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | 1536186 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1591 | 116143 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Arlington Trust Co LLC | 1997685 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4 | 292 | — | — | — | Jul 7, 2026 | SEC_13F_DATASET |
| Vanguard Personalized Indexing Management, LLC | 1767306 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 9336 | 681528 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Creative Planning | 1540235 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 25355 | 1850915 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Nykredit A/S | 1847328 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 948 | 69204 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | 314969 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5225 | 381 | — | — | — | Jul 23, 2026 | SEC_13F_DATASET |
| Mitsubishi UFJ Asset Management Co., Ltd. | 1466546 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16907 | 1234211 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Bell Investment Advisors, Inc | 1890149 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7 | 511 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 68100 | 4971300 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Apollon Wealth Management, LLC | 1764387 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 23519 | 523533 | — | — | — | Jul 23, 2026 | SEC_13F_DATASET |
| DIMENSIONAL FUND ADVISORS LP | 354204 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1924861 | 140514851 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| HSBC HOLDINGS PLC | 873630 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 21730 | 1587159 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Atlantic Union Bankshares Corp | 883948 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 465 | 10351 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| UMB Bank, n.a. | 933429 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 301 | 21973 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| South Dakota Investment Council | 1538846 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 19335 | 1411 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Rialto Wealth Management, LLC | 2054966 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8 | 584 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| XTX Topco Ltd | 1828301 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6003 | 438219 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| TWO SIGMA INVESTMENTS, LP | 1179392 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 45357 | 3311061 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MIRABELLA FINANCIAL SERVICES LLP | 1538853 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10550 | 770150 | — | — | — | Jul 31, 2026 | SEC_13F_DATASET |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 928047 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 37155 | 2712315 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Vident Advisory, LLC | 1744347 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 22347 | 1631331 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Pathway Financial Advisers, LLC | 2024152 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 107894 | 2401726 | — | — | — | Jul 30, 2026 | SEC_13F_DATASET |
| MCGUIRE CAPITAL ADVISORS INC | 2112006 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20 | 445 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Versant Capital Management, Inc | 1735057 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 284 | 20732 | — | — | — | Jul 2, 2026 | SEC_13F_DATASET |
| FEDERATED HERMES, INC. | 1056288 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2574 | 187902 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Qube Research & Technologies Ltd | 1729829 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 321718 | 23485414 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Tidal Investments LLC | 1600064 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 76055 | 5552015 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Pictet Asset Management Holding SA | 1993888 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5483 | 400259 | — | — | — | Jul 30, 2026 | SEC_13F_DATASET |
| Integrated Wealth Concepts LLC | 1737109 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2960 | 216082 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| SJS Investment Consulting Inc. | 1894302 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 75 | 5475 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| US BANCORP \DE\ | 36104 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1827 | 133371 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | 938076 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 23505 | 1715865 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Nuveen, LLC | 1871926 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 280301 | 20461973 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Quantbot Technologies LP | 1512991 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15303 | 1117119 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Chicago Partners Investment Group LLC | 1563525 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6931 | 521403 | — | — | — | Jul 30, 2026 | SEC_13F_DATASET |
| SIMPLEX TRADING, LLC | 1488542 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4600 | 335800 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC | 1629649 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7493 | 546989 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| AQR CAPITAL MANAGEMENT LLC | 1167557 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1564538 | 114211293 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HARBOUR INVESTMENTS, INC. | 810121 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1600 | 35616 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Capital International, Inc./CA/ | 895213 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3221 | 235133 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Dunhill Financial, LLC | 1948904 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3 | 271 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| GEODE CAPITAL MANAGEMENT, LLC | 1214717 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 588559 | 42976550 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Inspire Investing, LLC | 1670139 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12996 | 948708 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| STOREBRAND ASSET MANAGEMENT AS | 1685676 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15405 | 1124565 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2693700 | 36900 | — | — | — | Aug 24, 2026 | SEC_13F_DATASET |
| XPONANCE LLC | 1637541 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3928 | 286744 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| NORGES BANK | 1374170 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 214101 | 15629373 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| KLP KAPITALFORVALTNING AS | 1717443 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8500 | 620500 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Numerai GP LLC | 1668527 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8035 | 586555 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| GLENMEDE TRUST CO NA | 314949 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 23328 | 519281 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1368163 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 19174 | 1399702 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.