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 |
|---|---|---|---|---|---|
| Deutsche Bank AG | 1,561 | $118.5K | 0.00% | −31,669−95.3% | Reduced |
| Public Employees Retirement Association of Colorado | 1,704 | $129.0K | 0.00% | −1,946−53.3% | Reduced |
| Farther Finance Advisors, LLC | 1,921 | $145.9K | 0.00% | +1,822+1,840.4% | Added |
| California State Teachers Retirement System | 2,087 | $158.5K | 0.00% | −43,108−95.4% | Reduced |
| Sterling Capital Management LLC | 2,276 | $172.8K | 0.00% | −6,466−74.0% | Reduced |
| ASR Vermogensbeheer N.V. | 2,477 | $188.1K | 0.00% | −13−0.5% | Reduced |
| Tower Research Capital LLC (TRC) | 2,492 | $189.2K | 0.01% | +1,385+125.1% | Added |
| Securian Asset Management, Inc | 2,503 | $190.1K | 0.01% | 00.0% | Unchanged |
| Transce3nd, LLC | 2,498 | $190.2K | 0.08% | −2,493−49.9% | Reduced |
| US Bancorp | 2,625 | $199.3K | 0.00% | +330+14.4% | Added |
| Avanza Fonder AB | 2,680 | $203.5K | 0.01% | 00.0% | Unchanged |
| Crossmark Global Holdings, Inc. | 2,712 | $205.9K | 0.00% | −19−0.7% | Reduced |
| McMahon Financial Advisors, LLC | 2,886 | $219.1K | 0.05% | +715+32.9% | Added |
| Atria Investments LLC | 2,999 | $227.7K | 0.00% | +2,999 | New |
| Claret Asset Management Corp | 3,057 | $232.0K | 0.03% | +3,057 | New |
| Capula Management Ltd | 3,167 | $240.5K | 0.00% | +3,167 | New |
| Applied Finance Capital Management, LLC | 3,277 | $248.8K | 0.02% | +45+1.4% | Added |
| Advisor Group Holdings, Inc. | 3,417 | $261.6K | 0.00% | +918+36.7% | Added |
| Empowered Funds, LLC | 3,449 | $261.9K | 0.00% | +3,449 | New |
| DekaBank Deutsche Girozentrale | 3,540 | $270.0K | 0.00% | +22+0.6% | Added |
| CWM Advisors, LLC | 3,697 | $280.7K | 0.03% | +557+17.7% | Added |
| Voya Investment Management LLC | 3,715 | $282.1K | 0.00% | −475−11.3% | Reduced |
| Prudential Financial Inc | 3,788 | $287.6K | 0.00% | +582+18.2% | Added |
| Vident Advisory, LLC | 3,813 | $289.5K | 0.00% | −6,050−61.3% | Reduced |
| Centiva Capital, LP | 3,851 | $292.4K | 0.02% | −13,654−78.0% | Reduced |
| LMR Partners LLP | 3,861 | $293.2K | 0.00% | +3,861 | New |
| Catalyst Funds Management Pty Ltd | 3,905 | $296.5K | 0.08% | +1,305+50.2% | Added |
| Greenland Capital Management LP | 4,008 | $304.3K | 0.04% | +4,008 | New |
| Captrust Financial Advisors | 4,129 | $313.5K | 0.00% | +903+28.0% | Added |
| QRG Capital Management, Inc. | 4,307 | $327.0K | 0.00% | −4,373−50.4% | Reduced |
| Cetera Investment Advisers | 4,350 | $330.3K | 0.00% | +1,320+43.6% | Added |
| CIBC Asset Management Inc | 4,370 | $331.8K | 0.00% | +8+0.2% | Added |
| Summit Trail Advisors, LLC | 4,508 | $342.3K | 0.01% | +4,508 | New |
| Xponance, Inc. | 4,795 | $364.1K | 0.00% | −1,981−29.2% | Reduced |
| Quantessence Capital LLC | 4,908 | $372.7K | 0.11% | +4,908 | New |
| Sequent Planning LLC | 4,912 | $373.0K | 0.12% | −68−1.4% | Reduced |
| State of Tennessee, Treasury Department | 5,013 | $380.6K | 0.00% | −200−3.8% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 5,020 | $381.2K | 0.00% | +198+4.1% | Added |
| Unison Advisors LLC | 5,146 | $390.7K | 0.04% | +30+0.6% | Added |
| Kestra Investment Management, LLC | 3,951 | $395.2K | 0.01% | 00.0% | Unchanged |
| New York State Teachers Retirement System | 5,225 | $397.0K | 0.00% | −2,677−33.9% | Reduced |
| Mercer Global Advisors Inc | 5,270 | $400.2K | 0.00% | −3,765−41.7% | Reduced |
| Raymond James Financial Inc | 5,298 | $402.3K | 0.00% | −107,647−95.3% | Reduced |
| Neo Ivy Capital Management | 5,318 | $403.8K | 0.13% | +5,318 | New |
| Total Wealth Planning & Management, Inc. | 5,586 | $424.1K | 0.37% | +1,621+40.9% | Added |
| Kovitz Investment Group Partners, LLC | 5,776 | $438.6K | 0.00% | −8,888−60.6% | Reduced |
| Landscape Capital Management, L.L.C. | 6,646 | $504.6K | 0.04% | +6,646 | New |
| Pettee Investors, Inc. | 6,711 | $509.6K | 0.30% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 6,738 | $511.6K | 0.00% | −22,954−77.3% | Reduced |
| Oregon Public Employees Retirement Fund | 6,868 | $521.5K | 0.01% | 00.0% | Unchanged |
| First Eagle Investment Management, LLC | 6,885 | $522.8K | 0.00% | +797+13.1% | Added |
| RiverFront Investment Group, LLC | 6,972 | $529.4K | 0.01% | 00.0% | Unchanged |
| New Mexico Educational Retirement Board | 7,000 | $532.0K | 0.02% | 00.0% | Unchanged |
| Nebula Research & Development LLC | 7,169 | $544.3K | 0.05% | +7,169 | New |
| Magnetar Financial LLC | 7,187 | $545.7K | 0.00% | −20,090−73.7% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 7,444 | $565.2K | 0.01% | +4+0.1% | Added |
| Advisors Asset Management, Inc. | 7,647 | $580.6K | 0.01% | +25+0.3% | Added |
| Entropy Technologies, LP | 7,655 | $581.2K | 0.05% | +3,324+76.7% | Added |
| Ci Investments Inc. | 7,695 | $584.0K | 0.00% | +7,531+4,592.1% | Added |
| FORA Capital, LLC | 7,832 | $594.7K | 0.07% | +7,832 | New |
| Thrivent Financial for Lutherans | 7,850 | $596.0K | 0.00% | +4+0.1% | Added |
| Quadrant Capital Group LLC | 7,943 | $603.1K | 0.02% | +5,283+198.6% | Added |
| State of Michigan Retirement System | 8,000 | $607.4K | 0.00% | −1,000−11.1% | Reduced |
| Marshall Wace, LLP | 8,111 | $615.9K | 0.00% | +8,111 | New |
| Handelsbanken Fonder AB | 8,500 | $645.0K | 0.00% | −100−1.2% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 8,567 | $650.5K | 0.00% | +568+7.1% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 8,800 | $668.2K | 0.00% | −22,100−71.5% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 8,896 | $675.5K | 0.00% | +6,080+215.9% | Added |
| CI Private Wealth, LLC | 8,965 | $680.7K | 0.00% | −2,719−23.3% | Reduced |
| Pathstone Holdings, LLC | 9,002 | $683.5K | 0.00% | +2,112+30.7% | Added |
| XTX Topco Ltd | 9,377 | $712.0K | 0.03% | −5,618−37.5% | Reduced |
| Louisiana State Employees Retirement System | 9,400 | $713.7K | 0.01% | 00.0% | Unchanged |
| Sumitomo Mitsui Trust Holdings, Inc. | 9,817 | $745.4K | 0.00% | −69,272−87.6% | Reduced |
| JustInvest LLC | 10,045 | $762.7K | 0.01% | +1,780+21.5% | Added |
| Standard Life Aberdeen plc | 10,098 | $766.7K | 0.00% | +97+1.0% | Added |
| Public Employees Retirement System of Ohio | 10,373 | $787.6K | 0.00% | +49+0.5% | Added |
| Schonfeld Strategic Advisors LLC | 10,889 | $826.8K | 0.01% | −8,345−43.4% | Reduced |
| Creative Planning | 11,165 | $847.7K | 0.00% | +3,147+39.2% | Added |
| Omers Administration Corp | 11,380 | $864.1K | 0.01% | +11,380 | New |
| Quadrature Capital Ltd | 11,392 | $864.8K | 0.01% | +9,094+395.7% | Added |
| Gamco Investors, Inc. Et Al | 11,566 | $878.2K | 0.01% | +11,566 | New |
| Ameritas Investment Partners, Inc. | 11,574 | $878.7K | 0.03% | −110−0.9% | Reduced |
| Graham Capital Management, L.P. | 11,704 | $888.7K | 0.03% | −25,050−68.2% | Reduced |
| Yousif Capital Management, LLC | 11,868 | $901.1K | 0.01% | −278−2.3% | Reduced |
| Gotham Asset Management, LLC | 12,076 | $916.9K | 0.01% | +6,645+122.4% | Added |
| Citadel Advisors LLC | 12,306 | $934.4K | 0.00% | −840,550−98.6% | Reduced |
| Stifel Financial Corp | 12,357 | $938.3K | 0.00% | +5,179+72.2% | Added |
| Polymer Capital Management (US) LLC | 14,060 | $1.07M | 0.17% | +9,825+232.0% | Added |
| Ambassador Advisors, LLC | 14,265 | $1.08M | 0.17% | +1,031+7.8% | Added |
| Occudo Quantitative Strategies LP | 15,125 | $1.15M | 0.13% | +11,348+300.5% | Added |
| Great West Life Assurance Co | 15,207 | $1.16M | 0.00% | −10,852−41.6% | Reduced |
| Amalgamated Bank | 15,238 | $1.16M | 0.01% | −337−2.2% | Reduced |
| Royal London Asset Management Ltd | 15,513 | $1.18M | 0.00% | −469−2.9% | Reduced |
| Treasurer of the State of North Carolina | 15,608 | $1.19M | 0.00% | +266+1.7% | Added |
| Mutual of America Capital Management LLC | 16,581 | $1.26M | 0.01% | −641−3.7% | Reduced |
| MetLife Investment Management | 17,954 | $1.36M | 0.01% | −629−3.4% | Reduced |
| APG Asset Management N.V. | 21,100 | $1.36M | 0.00% | +1,700+8.8% | Added |
| American Century Companies Inc | 18,056 | $1.37M | 0.00% | −4,588−20.3% | Reduced |
| Recurrent Investment Advisors LLC | 18,104 | $1.37M | 0.11% | +60.0% | Added |
| Dana Investment Advisors, Inc. | 19,783 | $1.50M | 0.05% | −183−0.9% | Reduced |