Westlake Corp
WLK- Exchange
- NYSE
- Industry
- Industrial Organic Chemicals
- SEC CIK
- 0001262823
In the last 90 days, Westlake Corp insiders filed 0 open-market purchases and 1 sale; 360 institutions reported holding it in 13F filings for Q2 2026, worth $2.90B in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Westlake Corp as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 360
- +24 vs. Q1 2026
- Shares held
- 39.7M
- −4.10M (−9.4%) vs. Q1 2026
- Total value
- $2.90B
- −$2.21B (−43.2%) vs. Q1 2026
- New holders
- 88
- 109 more added
- Sold out
- 64
- 119 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting WLK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 360 | $2.90B |
| Q1 2026 | 339 | $5.15B |
| Q4 2025 | 298 | $3.43B |
| Q3 2025 | 305 | $3.20B |
| Q2 2025 | 306 | $2.99B |
| Q1 2025 | 361 | $3.64B |
| Q4 2024 | 378 | $4.04B |
| Q3 2024 | 403 | $5.08B |
| Q2 2024 | 382 | $4.93B |
| Q1 2024 | 347 | $5.29B |
| Q4 2023 | 357 | $5.04B |
| Q3 2023 | 335 | $4.64B |
| Q2 2023 | 340 | $4.42B |
| Q1 2023 | 342 | $4.40B |
| Q4 2022 | 344 | $3.73B |
| Q3 2022 | 321 | $3.03B |
| Q2 2022 | 355 | $3.50B |
| Q1 2022 | 328 | $4.38B |
| Q4 2021 | 298 | $3.37B |
| Q3 2021 | 272 | $3.15B |
| Q2 2021 | 276 | $3.02B |
| Q1 2021 | 240 | $3.09B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital International Ltd | 5,238 | $382.4K | 0.01% | −32,062−86.0% | Reduced |
| New York State Teachers Retirement System | 5,225 | $381.0K | 0.00% | +1,082+26.1% | Added |
| Y-Intercept (Hong Kong) Ltd | 5,128 | $374.3K | 0.01% | +5,128 | New |
| MAI Capital Management | 5,077 | $370.6K | 0.00% | +3,446+211.3% | Added |
| Pathstone Holdings, LLC | 5,038 | $367.7K | 0.00% | +78+1.6% | Added |
| Centiva Capital, LP | 5,037 | $367.7K | 0.01% | +5,037 | New |
| Sanctuary Advisors, LLC | 4,985 | $363.9K | 0.00% | +1,713+52.4% | Added |
| Aquatic Capital Management LLC | 4,884 | $356.5K | 0.01% | +4,884 | New |
| Scientech Research LLC | 4,813 | $351.3K | 0.28% | +4,813 | New |
| Daiwa Securities Group Inc. | 4,785 | $349.3K | 0.00% | +4,785 | New |
| Capstone Investment Advisors, LLC | 4,721 | $344.6K | 0.00% | −131,087−96.5% | Reduced |
| Tower Research Capital LLC (TRC) | 4,691 | $342.4K | 0.01% | +3,335+245.9% | Added |
| Farringdon Capital, Ltd. | 4,583 | $334.6K | 0.17% | +4,583 | New |
| Guggenheim Capital LLC | 4,374 | $319.3K | 0.00% | +255+6.2% | Added |
| Jain Global LLC | 4,093 | $298.8K | 0.00% | +4,093 | New |
| 111 Capital | 4,081 | $297.9K | 0.05% | +4,081 | New |
| Arrowstreet Capital, Limited Partnership | 4,031 | $294.3K | 0.00% | +4,031 | New |
| Hartree Partners, LP | 4,000 | $292.0K | 0.06% | −300−7.0% | Reduced |
| CIBC Asset Management Inc | 3,977 | $290.3K | 0.00% | 00.0% | Unchanged |
| Xponance, Inc. | 3,928 | $286.7K | 0.00% | −60−1.5% | Reduced |
| Buckingham Strategic Partners | 3,912 | $285.6K | 0.00% | +3,912 | New |
| Rothschild Investment LLC | 3,892 | $284.1K | 0.01% | +3,845+8,180.9% | Added |
| Merit Financial Group, LLC | 3,859 | $281.7K | 0.00% | +3,859 | New |
| RMB Capital Management, LLC | 3,841 | $280.4K | 0.00% | +3,841 | New |
| SRS Capital Advisors, Inc. | 3,773 | $275.4K | 0.00% | +3,541+1,526.3% | Added |
| Pacer Advisors, Inc. | 3,756 | $274.0K | 0.00% | −88−2.3% | Reduced |
| Evergreen Capital Management LLC | 3,651 | $266.5K | 0.00% | 00.0% | Unchanged |
| Core Capital Management & Research, inc. | 3,339 | $263.5K | 0.14% | +3,339 | New |
| Aigen Investment Management, LP | 3,496 | $255.2K | 0.07% | +3,496 | New |
| Gamco Investors, Inc. Et Al | 3,491 | $254.8K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 3,437 | $250.9K | 0.00% | −484−12.3% | Reduced |
| NorthCrest Asset Manangement, LLC | 3,214 | $239.4K | 0.01% | +3,214 | New |
| State of Alaska, Department of Revenue | 3,264 | $238.0K | 0.00% | −90−2.7% | Reduced |
| Capital International Inc | 3,221 | $235.1K | 0.00% | −18,138−84.9% | Reduced |
| Landscape Capital Management, L.L.C. | 3,072 | $224.3K | 0.01% | +3,072 | New |
| Allworth Financial LP | 3,054 | $222.9K | 0.00% | +1,353+79.5% | Added |
| Claret Asset Management Corp | 3,026 | $221.0K | 0.02% | +19+0.6% | Added |
| Integrated Wealth Concepts LLC | 2,956 | $215.8K | 0.00% | +100+3.5% | Added |
| Odyssean, LLC | 2,903 | $211.9K | 0.03% | 00.0% | Unchanged |
| Bull Harbor Capital LLC | 2,867 | $209.3K | 0.04% | +2,867 | New |
| First Eagle Investment Management, LLC | 2,835 | $207.0K | 0.00% | −4,283−60.2% | Reduced |
| Qsemble Capital Management, LP | 2,814 | $205.4K | 0.03% | +2,814 | New |
| HB Wealth Management, LLC | 2,768 | $202.1K | 0.00% | +2,768 | New |
| Bayforest Capital Ltd | 2,728 | $199.1K | 0.18% | +2,728 | New |
| Securian Asset Management, Inc | 2,503 | $194.3K | 0.01% | +100+4.2% | Added |
| Federated Hermes, Inc. | 2,574 | $187.9K | 0.00% | −264,077−99.0% | Reduced |
| Virtus Investment Advisers, Inc. | 2,505 | $182.9K | 0.04% | +769+44.3% | Added |
| Lloyd Advisory Services, LLC. | 2,472 | $180.4K | 0.07% | +2,472 | New |
| Federation des caisses Desjardins du Quebec | 2,272 | $165.9K | 0.00% | +282+14.2% | Added |
| Caitong International Asset Management Co., Ltd | 2,253 | $164.5K | 0.02% | +2,253 | New |
| CoreFirst Bank & Trust | 2,195 | $160.2K | 0.08% | 00.0% | Unchanged |
| Deutsche Bank AG | 2,169 | $158.3K | 0.00% | −201−8.5% | Reduced |
| US Bancorp | 1,979 | $144.5K | 0.00% | −191−8.8% | Reduced |
| Advisors Asset Management, Inc. | 1,949 | $142.3K | 0.00% | −3,698−65.5% | Reduced |
| Hantz Financial Services, Inc. | 1,945 | $142.0K | 0.00% | −232−10.7% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 1,723 | $125.8K | 0.00% | +1,723 | New |
| Public Employees Retirement Association of Colorado | 1,704 | $124.0K | 0.00% | 00.0% | Unchanged |
| Kimelman & Baird, LLC | 1,500 | $109.5K | 0.01% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 1,270 | $92.7K | 0.00% | −252−16.6% | Reduced |
| IFP Advisors, Inc | 1,171 | $85.5K | 0.00% | +1,169+58,450.0% | Added |
| Signaturefd, LLC | 1,160 | $84.7K | 0.00% | +12+1.0% | Added |
| Essential Partners LLC | 1,096 | $80.0K | 0.04% | +1,087+12,077.8% | Added |
| Transamerica Financial Advisors, Inc. | 1,095 | $80.0K | 0.01% | −205−15.8% | Reduced |
| Sterling Capital Management LLC | 991 | $72.3K | 0.00% | −131−11.7% | Reduced |
| EverSource Wealth Advisors, LLC | 961 | $70.2K | 0.00% | +727+310.7% | Added |
| Nykredit A/S | 948 | $69.2K | 0.00% | +948 | New |
| Compagnie Lombard Odier SCmA | 860 | $62.8K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 695 | $50.7K | 0.00% | −135−16.3% | Reduced |
| STRS Ohio | 695 | $50.7K | 0.00% | −104−13.0% | Reduced |
| GWM Advisors LLC | 689 | $50.3K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 604 | $44.2K | 0.00% | +315+109.0% | Added |
| Exchange Traded Concepts, LLC | 596 | $43.5K | 0.00% | +60+11.2% | Added |
| Jones Financial Companies LLLP | 487 | $37.3K | 0.00% | +126+34.9% | Added |
| GAMMA Investing LLC | 494 | $36.1K | 0.00% | −37−7.0% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 461 | $33.7K | 0.00% | −74−13.8% | Reduced |
| Rockefeller Capital Management L.P. | 395 | $28.9K | 0.00% | −462−53.9% | Reduced |
| Clearstead Advisors, LLC | 376 | $27.4K | 0.00% | +358+1,988.9% | Added |
| Nomura Asset Management Co Ltd | 340 | $24.8K | 0.00% | −330−49.3% | Reduced |
| Umb Bank N A | 301 | $22.0K | 0.00% | −11−3.5% | Reduced |
| Nisa Investment Advisors, LLC | 284 | $20.7K | 0.00% | +99+53.5% | Added |
| Versant Capital Management, Inc | 284 | $20.7K | 0.00% | +183+181.2% | Added |
| Quent Capital, LLC | 253 | $18.5K | 0.00% | +15+6.3% | Added |
| Deseret Mutual Benefit Administrators | 248 | $18.1K | 0.01% | 00.0% | Unchanged |
| True Wealth Design, LLC | 232 | $16.9K | 0.00% | +205+759.3% | Added |
| Massmutual Trust Co FSB | 221 | $16.1K | 0.00% | −53−19.3% | Reduced |
| Smartleaf Asset Management LLC | 213 | $15.9K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 209 | $15.3K | 0.00% | +19+10.0% | Added |
| NBC Securities, Inc. | 194 | $14.2K | 0.00% | −6−3.0% | Reduced |
| Spire Wealth Management | 172 | $12.6K | 0.00% | 00.0% | Unchanged |
| Cullen/Frost Bankers, Inc. | 166 | $12.1K | 0.00% | +1+0.6% | Added |
| Bessemer Group Inc | 165 | $12.0K | 0.00% | +105+175.0% | Added |
| Activest Wealth Management | 140 | $10.2K | 0.00% | +138+6,900.0% | Added |
| Huntington National Bank | 121 | $8.83K | 0.00% | +2+1.7% | Added |
| Covestor Ltd | 112 | $8.00K | 0.00% | −429−79.3% | Reduced |
| Eurizon Capital SGR S.p.A. | 89 | $6.66K | 0.00% | −7,429−98.8% | Reduced |
| Private Trust Co NA | 90 | $6.57K | 0.00% | 00.0% | Unchanged |
| Pinnacle Wealth Planning Services, Inc. | 80 | $5.84K | 0.00% | +22+37.9% | Added |
| Private Wealth Management Group, LLC | 79 | $5.77K | 0.00% | +43+119.4% | Added |
| SJS Investment Consulting Inc. | 75 | $5.47K | 0.00% | +53+240.9% | Added |
| Parkside Financial Bank & Trust | 68 | $4.96K | 0.00% | 00.0% | Unchanged |