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 2025
Institutional positions in Westlake Corp as of Jun 30, 2025. 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
- 306
- −50 vs. Q1 2025
- Shares held
- 39.4M
- +3.00M (+8.3%) vs. Q1 2025
- Total value
- $2.99B
- −$644.8M (−17.7%) vs. Q1 2025
- New holders
- 46
- 125 more added
- Sold out
- 96
- 104 more reduced
5 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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 2025
Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| SEI Investments Co | 22,746 | $1.73M | 0.00% | +14,055+161.7% | Added |
| Knights of Columbus Asset Advisors LLC | 22,364 | $1.70M | 0.10% | 00.0% | Unchanged |
| South Dakota Investment Council | 22,135 | $1.68M | 0.03% | 00.0% | Unchanged |
| LPL Financial LLC | 21,273 | $1.62M | 0.00% | −9,148−30.1% | Reduced |
| Manning & Napier Advisors LLC | 20,684 | $1.57M | 0.02% | −5,487−21.0% | Reduced |
| Envestnet Asset Management Inc | 20,396 | $1.55M | 0.00% | −6,139−23.1% | Reduced |
| Dana Investment Advisors, Inc. | 19,783 | $1.50M | 0.05% | −183−0.9% | Reduced |
| Recurrent Investment Advisors LLC | 18,104 | $1.37M | 0.11% | +60.0% | Added |
| American Century Companies Inc | 18,056 | $1.37M | 0.00% | −4,588−20.3% | Reduced |
| APG Asset Management N.V. | 21,100 | $1.36M | 0.00% | +1,700+8.8% | Added |
| MetLife Investment Management | 17,954 | $1.36M | 0.01% | −629−3.4% | Reduced |
| Mutual of America Capital Management LLC | 16,581 | $1.26M | 0.01% | −641−3.7% | Reduced |
| Treasurer of the State of North Carolina | 15,608 | $1.19M | 0.00% | +266+1.7% | Added |
| Royal London Asset Management Ltd | 15,513 | $1.18M | 0.00% | −469−2.9% | Reduced |
| Amalgamated Bank | 15,238 | $1.16M | 0.01% | −337−2.2% | Reduced |
| Great West Life Assurance Co | 15,207 | $1.16M | 0.00% | −10,852−41.6% | Reduced |
| Occudo Quantitative Strategies LP | 15,125 | $1.15M | 0.13% | +11,348+300.5% | Added |
| Ambassador Advisors, LLC | 14,265 | $1.08M | 0.17% | +1,031+7.8% | Added |
| Polymer Capital Management (US) LLC | 14,060 | $1.07M | 0.17% | +9,825+232.0% | Added |
| Stifel Financial Corp | 12,357 | $938.3K | 0.00% | +5,179+72.2% | Added |
| Citadel Advisors LLC | 12,306 | $934.4K | 0.00% | −840,550−98.6% | Reduced |
| Gotham Asset Management, LLC | 12,076 | $916.9K | 0.01% | +6,645+122.4% | Added |
| Yousif Capital Management, LLC | 11,868 | $901.1K | 0.01% | −278−2.3% | Reduced |
| Graham Capital Management, L.P. | 11,704 | $888.7K | 0.03% | −25,050−68.2% | Reduced |
| Ameritas Investment Partners, Inc. | 11,574 | $878.7K | 0.03% | −110−0.9% | Reduced |
| Gamco Investors, Inc. Et Al | 11,566 | $878.2K | 0.01% | +11,566 | New |
| Quadrature Capital Ltd | 11,392 | $864.8K | 0.01% | +9,094+395.7% | Added |
| Omers Administration Corp | 11,380 | $864.1K | 0.01% | +11,380 | New |
| Creative Planning | 11,165 | $847.7K | 0.00% | +3,147+39.2% | Added |
| Schonfeld Strategic Advisors LLC | 10,889 | $826.8K | 0.01% | −8,345−43.4% | Reduced |
| Public Employees Retirement System of Ohio | 10,373 | $787.6K | 0.00% | +49+0.5% | Added |
| Standard Life Aberdeen plc | 10,098 | $766.7K | 0.00% | +97+1.0% | Added |
| JustInvest LLC | 10,045 | $762.7K | 0.01% | +1,780+21.5% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 9,817 | $745.4K | 0.00% | −69,272−87.6% | Reduced |
| Louisiana State Employees Retirement System | 9,400 | $713.7K | 0.01% | 00.0% | Unchanged |
| XTX Topco Ltd | 9,377 | $712.0K | 0.03% | −5,618−37.5% | Reduced |
| Pathstone Holdings, LLC | 9,002 | $683.5K | 0.00% | +2,112+30.7% | Added |
| CI Private Wealth, LLC | 8,965 | $680.7K | 0.00% | −2,719−23.3% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 8,896 | $675.5K | 0.00% | +6,080+215.9% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 8,800 | $668.2K | 0.00% | −22,100−71.5% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 8,567 | $650.5K | 0.00% | +568+7.1% | Added |
| Handelsbanken Fonder AB | 8,500 | $645.0K | 0.00% | −100−1.2% | Reduced |
| Marshall Wace, LLP | 8,111 | $615.9K | 0.00% | +8,111 | New |
| State of Michigan Retirement System | 8,000 | $607.4K | 0.00% | −1,000−11.1% | Reduced |
| Quadrant Capital Group LLC | 7,943 | $603.1K | 0.02% | +5,283+198.6% | Added |
| Thrivent Financial for Lutherans | 7,850 | $596.0K | 0.00% | +4+0.1% | Added |
| FORA Capital, LLC | 7,832 | $594.7K | 0.07% | +7,832 | New |
| Ci Investments Inc. | 7,695 | $584.0K | 0.00% | +7,531+4,592.1% | Added |
| Entropy Technologies, LP | 7,655 | $581.2K | 0.05% | +3,324+76.7% | Added |
| Advisors Asset Management, Inc. | 7,647 | $580.6K | 0.01% | +25+0.3% | Added |
| Northwestern Mutual Investment Management Company, LLC | 7,444 | $565.2K | 0.01% | +4+0.1% | Added |
| Magnetar Financial LLC | 7,187 | $545.7K | 0.00% | −20,090−73.7% | Reduced |
| Nebula Research & Development LLC | 7,169 | $544.3K | 0.05% | +7,169 | New |
| New Mexico Educational Retirement Board | 7,000 | $532.0K | 0.02% | 00.0% | Unchanged |
| RiverFront Investment Group, LLC | 6,972 | $529.4K | 0.01% | 00.0% | Unchanged |
| First Eagle Investment Management, LLC | 6,885 | $522.8K | 0.00% | +797+13.1% | Added |
| Oregon Public Employees Retirement Fund | 6,868 | $521.5K | 0.01% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 6,738 | $511.6K | 0.00% | −22,954−77.3% | Reduced |
| Pettee Investors, Inc. | 6,711 | $509.6K | 0.30% | 00.0% | Unchanged |
| Landscape Capital Management, L.L.C. | 6,646 | $504.6K | 0.04% | +6,646 | New |
| Kovitz Investment Group Partners, LLC | 5,776 | $438.6K | 0.00% | −8,888−60.6% | Reduced |
| Total Wealth Planning & Management, Inc. | 5,586 | $424.1K | 0.37% | +1,621+40.9% | Added |
| Neo Ivy Capital Management | 5,318 | $403.8K | 0.13% | +5,318 | New |
| Raymond James Financial Inc | 5,298 | $402.3K | 0.00% | −107,647−95.3% | Reduced |
| Mercer Global Advisors Inc | 5,270 | $400.2K | 0.00% | −3,765−41.7% | Reduced |
| New York State Teachers Retirement System | 5,225 | $397.0K | 0.00% | −2,677−33.9% | Reduced |
| Kestra Investment Management, LLC | 3,951 | $395.2K | 0.01% | 00.0% | Unchanged |
| Unison Advisors LLC | 5,146 | $390.7K | 0.04% | +30+0.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 5,020 | $381.2K | 0.00% | +198+4.1% | Added |
| State of Tennessee, Treasury Department | 5,013 | $380.6K | 0.00% | −200−3.8% | Reduced |
| Sequent Planning LLC | 4,912 | $373.0K | 0.12% | −68−1.4% | Reduced |
| Quantessence Capital LLC | 4,908 | $372.7K | 0.11% | +4,908 | New |
| Xponance, Inc. | 4,795 | $364.1K | 0.00% | −1,981−29.2% | Reduced |
| Summit Trail Advisors, LLC | 4,508 | $342.3K | 0.01% | +4,508 | New |
| CIBC Asset Management Inc | 4,370 | $331.8K | 0.00% | +8+0.2% | Added |
| Cetera Investment Advisers | 4,350 | $330.3K | 0.00% | +1,320+43.6% | Added |
| QRG Capital Management, Inc. | 4,307 | $327.0K | 0.00% | −4,373−50.4% | Reduced |
| Captrust Financial Advisors | 4,129 | $313.5K | 0.00% | +903+28.0% | Added |
| Greenland Capital Management LP | 4,008 | $304.3K | 0.04% | +4,008 | New |
| Catalyst Funds Management Pty Ltd | 3,905 | $296.5K | 0.08% | +1,305+50.2% | Added |
| LMR Partners LLP | 3,861 | $293.2K | 0.00% | +3,861 | New |
| Centiva Capital, LP | 3,851 | $292.4K | 0.02% | −13,654−78.0% | Reduced |
| Vident Advisory, LLC | 3,813 | $289.5K | 0.00% | −6,050−61.3% | Reduced |
| Prudential Financial Inc | 3,788 | $287.6K | 0.00% | +582+18.2% | Added |
| Voya Investment Management LLC | 3,715 | $282.1K | 0.00% | −475−11.3% | Reduced |
| CWM Advisors, LLC | 3,697 | $280.7K | 0.03% | +557+17.7% | Added |
| DekaBank Deutsche Girozentrale | 3,540 | $270.0K | 0.00% | +22+0.6% | Added |
| Empowered Funds, LLC | 3,449 | $261.9K | 0.00% | +3,449 | New |
| Advisor Group Holdings, Inc. | 3,417 | $261.6K | 0.00% | +918+36.7% | Added |
| Applied Finance Capital Management, LLC | 3,277 | $248.8K | 0.02% | +45+1.4% | Added |
| Capula Management Ltd | 3,167 | $240.5K | 0.00% | +3,167 | New |
| Claret Asset Management Corp | 3,057 | $232.0K | 0.03% | +3,057 | New |
| Atria Investments LLC | 2,999 | $227.7K | 0.00% | +2,999 | New |
| McMahon Financial Advisors, LLC | 2,886 | $219.1K | 0.05% | +715+32.9% | Added |
| Crossmark Global Holdings, Inc. | 2,712 | $205.9K | 0.00% | −19−0.7% | Reduced |
| Avanza Fonder AB | 2,680 | $203.5K | 0.01% | 00.0% | Unchanged |
| US Bancorp | 2,625 | $199.3K | 0.00% | +330+14.4% | Added |
| Transce3nd, LLC | 2,498 | $190.2K | 0.08% | −2,493−49.9% | Reduced |
| Securian Asset Management, Inc | 2,503 | $190.1K | 0.01% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 2,492 | $189.2K | 0.01% | +1,385+125.1% | Added |