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, Q1 2025
Institutional positions in Westlake Corp as of Mar 31, 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
- 361
- −14 vs. Q4 2024
- Shares held
- 36.4M
- +2.10M (+6.1%) vs. Q4 2024
- Total value
- $3.64B
- −$292.4M (−7.4%) vs. Q4 2024
- New holders
- 47
- 147 more added
- Sold out
- 61
- 115 more reduced
3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Dark Forest Capital Management LP | 8,988 | $899.1K | 0.04% | +4,360+94.2% | Added |
| State of Michigan Retirement System | 9,000 | $900.3K | 0.01% | +100+1.1% | Added |
| Mercer Global Advisors Inc | 9,035 | $903.8K | 0.00% | −2,625−22.5% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 9,101 | $910.4K | 0.00% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 9,108 | $911.1K | 0.02% | +7,019+336.0% | Added |
| DnB Asset Management AS | 9,129 | $913.2K | 0.00% | −22,067−70.7% | Reduced |
| Louisiana State Employees Retirement System | 9,400 | $940.3K | 0.02% | +100+1.1% | Added |
| Vident Advisory, LLC | 9,863 | $986.6K | 0.01% | +7,989+426.3% | Added |
| Standard Life Aberdeen plc | 10,001 | $1.00M | 0.00% | +10,001 | New |
| Axq Capital, LP | 10,139 | $1.01M | 0.41% | −1,958−16.2% | Reduced |
| ISAM Funds (UK) Ltd | 10,300 | $1.03M | 0.51% | +10,300 | New |
| Public Employees Retirement System of Ohio | 10,324 | $1.03M | 0.00% | −1,193−10.4% | Reduced |
| Aigen Investment Management, LP | 10,572 | $1.06M | 0.17% | +5,321+101.3% | Added |
| HSBC Holdings PLC | 10,640 | $1.06M | 0.00% | −15,784−59.7% | Reduced |
| Nomura Asset Management Co Ltd | 10,636 | $1.06M | 0.00% | +180+1.7% | Added |
| Susquehanna International Group, LLP | 11,084 | $1.11M | 0.00% | +6,774+157.2% | Added |
| Arizona State Retirement System | 11,166 | $1.12M | 0.01% | −38−0.3% | Reduced |
| Keeley-Teton Advisors, LLC | 11,566 | $1.16M | 0.14% | −2,025−14.9% | Reduced |
| Ameritas Investment Partners, Inc. | 11,684 | $1.17M | 0.04% | −119−1.0% | Reduced |
| CI Private Wealth, LLC | 11,684 | $1.17M | 0.00% | +1,123+10.6% | Added |
| Teachers Retirement System of the State of Kentucky | 11,715 | $1.17M | 0.01% | 00.0% | Unchanged |
| Resona Asset Management Co.,Ltd. | 11,719 | $1.17M | 0.01% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 11,900 | $1.19M | 0.01% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 12,146 | $1.21M | 0.01% | −41−0.3% | Reduced |
| Asset Management One Co.,Ltd. | 12,253 | $1.23M | 0.00% | +534+4.6% | Added |
| Korea Investment CORP | 12,611 | $1.26M | 0.00% | −1,016−7.5% | Reduced |
| Ambassador Advisors, LLC | 13,234 | $1.32M | 0.23% | −185−1.4% | Reduced |
| Gries Financial LLC | 13,512 | $1.35M | 0.26% | +13,512 | New |
| Mn Services Vermogensbeheer B.V. | 13,700 | $1.37M | 0.01% | −1,900−12.2% | Reduced |
| Oliver Luxxe Assets LLC | 13,885 | $1.39M | 0.26% | +1,123+8.8% | Added |
| New York State Common Retirement Fund | 13,975 | $1.40M | 0.00% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 14,126 | $1.41M | 0.04% | +14,126 | New |
| Kovitz Investment Group Partners, LLC | 14,664 | $1.47M | 0.01% | −1,358−8.5% | Reduced |
| Pictet Asset Management Holding SA | 14,897 | $1.49M | 0.00% | −7,199−32.6% | Reduced |
| XTX Topco Ltd | 14,995 | $1.50M | 0.08% | +14,995 | New |
| Treasurer of the State of North Carolina | 15,342 | $1.53M | 0.01% | +600+4.1% | Added |
| Amalgamated Bank | 15,575 | $1.56M | 0.01% | −107−0.7% | Reduced |
| Ensign Peak Advisors, Inc | 15,899 | $1.59M | 0.00% | −9,396−37.1% | Reduced |
| Royal London Asset Management Ltd | 15,982 | $1.60M | 0.00% | +76+0.5% | Added |
| Cresset Asset Management, LLC | 16,127 | $1.61M | 0.01% | −1,397−8.0% | Reduced |
| Brevan Howard Capital Management LP | 16,207 | $1.62M | 0.05% | +16,207 | New |
| Mitsubishi UFJ Trust & Banking Corp | 17,052 | $1.71M | 0.00% | −748−4.2% | Reduced |
| Mutual of America Capital Management LLC | 17,222 | $1.72M | 0.02% | −455−2.6% | Reduced |
| Centiva Capital, LP | 17,505 | $1.75M | 0.10% | +10,670+156.1% | Added |
| State of New Jersey Common Pension Fund D | 17,662 | $1.77M | 0.01% | +1,127+6.8% | Added |
| APG Asset Management N.V. | 19,400 | $1.80M | 0.01% | −500−2.5% | Reduced |
| Recurrent Investment Advisors LLC | 18,098 | $1.81M | 0.15% | +2,980+19.7% | Added |
| MetLife Investment Management | 18,583 | $1.86M | 0.01% | −282−1.5% | Reduced |
| AQR Capital Management LLC | 19,094 | $1.88M | 0.00% | +1,668+9.6% | Added |
| Schonfeld Strategic Advisors LLC | 19,234 | $1.92M | 0.01% | −17,134−47.1% | Reduced |
| Dana Investment Advisors, Inc. | 19,966 | $2.00M | 0.07% | −235−1.2% | Reduced |
| Price T Rowe Associates Inc | 21,183 | $2.12M | 0.00% | −941−4.3% | Reduced |
| South Dakota Investment Council | 22,135 | $2.21M | 0.05% | 00.0% | Unchanged |
| Knights of Columbus Asset Advisors LLC | 22,364 | $2.24M | 0.15% | −20,483−47.8% | Reduced |
| American Century Companies Inc | 22,644 | $2.27M | 0.00% | −20,016−46.9% | Reduced |
| Worldquant Millennium Advisors LLC | 22,720 | $2.27M | 0.01% | 00.0% | Unchanged |
| Wealthfront Advisers LLC | 24,498 | $2.45M | 0.01% | +9,341+61.6% | Added |
| State of Wisconsin Investment Board | 25,647 | $2.57M | 0.01% | +3,400+15.3% | Added |
| Great West Life Assurance Co | 26,059 | $2.61M | 0.00% | −1,460−5.3% | Reduced |
| Manning & Napier Advisors LLC | 26,171 | $2.62M | 0.03% | +7,382+39.3% | Added |
| BNP Paribas Arbitrage, SA | 26,356 | $2.64M | 0.00% | −48,759−64.9% | Reduced |
| Envestnet Asset Management Inc | 26,535 | $2.65M | 0.00% | +8,258+45.2% | Added |
| KBC Group NV | 26,695 | $2.67M | 0.01% | −560−2.1% | Reduced |
| National Bank of Canada | 26,974 | $2.70M | 0.00% | −20.0% | Reduced |
| Magnetar Financial LLC | 27,277 | $2.73M | 0.04% | +27,277 | New |
| State of Alaska, Department of Revenue | 27,858 | $2.79M | 0.03% | +105+0.4% | Added |
| Manufacturers Life Insurance Company, The | 27,969 | $2.80M | 0.00% | +4,862+21.0% | Added |
| State Board of Administration of Florida Retirement System | 27,975 | $2.80M | 0.01% | 00.0% | Unchanged |
| Citigroup Inc | 28,252 | $2.83M | 0.00% | −4,885−14.7% | Reduced |
| Danske Bank A/S | 28,712 | $2.87M | 0.01% | −2,400−7.7% | Reduced |
| ING Groep NV | 29,600 | $2.96M | 0.02% | +7,300+32.7% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 29,692 | $2.97M | 0.00% | +296+1.0% | Added |
| LPL Financial LLC | 30,421 | $3.04M | 0.00% | +4,493+17.3% | Added |
| Comerica Bank | 30,638 | $3.06M | 0.01% | +1,038+3.5% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 30,900 | $3.09M | 0.01% | +10,600+52.2% | Added |
| Weiss Asset Management LP | 31,702 | $3.17M | 0.08% | +31,702 | New |
| Deutsche Bank AG | 33,230 | $3.32M | 0.00% | −5,353−13.9% | Reduced |
| Walleye Capital LLC | 34,377 | $3.44M | 0.04% | +27,672+412.7% | Added |
| Graham Capital Management, L.P. | 36,754 | $3.68M | 0.12% | +18,904+105.9% | Added |
| Corebridge Financial, Inc. | 36,963 | $3.70M | 0.02% | −902−2.4% | Reduced |
| Royal Bank of Canada | 38,687 | $3.87M | 0.00% | +18,321+90.0% | Added |
| Canada Pension Plan Investment Board | 39,364 | $3.94M | 0.00% | −22,477−36.3% | Reduced |
| Retirement Systems of Alabama | 40,729 | $4.07M | 0.02% | +40+0.1% | Added |
| California State Teachers Retirement System | 45,195 | $4.52M | 0.01% | +84+0.2% | Added |
| Thomist Capital Management, LP | 46,100 | $4.57M | 1.92% | +46,100 | New |
| Amundi | 50,770 | $4.78M | 0.00% | −227,559−81.8% | Reduced |
| Verition Fund Management LLC | 51,511 | $5.15M | 0.03% | −9,641−15.8% | Reduced |
| SG Americas Securities, LLC | 57,560 | $5.76M | 0.02% | −42,567−42.5% | Reduced |
| California Public Employees Retirement System | 58,830 | $5.88M | 0.00% | −704−1.2% | Reduced |
| Janney Montgomery Scott LLC | 61,134 | $6.12M | 0.02% | +1,635+2.7% | Added |
| Wells Fargo & Company | 61,206 | $6.12M | 0.00% | +8,491+16.1% | Added |
| HRT Financial LP | 68,304 | $6.83M | 0.04% | +68,304 | New |
| Alliancebernstein L.P. | 68,469 | $6.85M | 0.00% | +4,746+7.4% | Added |
| HITE Hedge Asset Management LLC | 71,475 | $7.15M | 0.44% | +10,827+17.9% | Added |
| Cerity Partners LLC | 74,928 | $7.50M | 0.02% | −7,685−9.3% | Reduced |
| Principal Financial Group Inc | 76,996 | $7.70M | 0.00% | +315+0.4% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 79,089 | $7.91M | 0.01% | −374−0.5% | Reduced |
| Jane Street Group, LLC | 85,940 | $8.60M | 0.02% | +78,256+1,018.4% | Added |
| Sprott Inc. | 90,000 | $9.00M | 0.53% | +25,000+38.5% | Added |
| Walnut Level Capital LLC | 92,500 | $9.25M | 7.39% | +20,215+28.0% | Added |