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 |
|---|---|---|---|---|---|
| Manning & Napier Advisors LLC | 26,171 | $2.62M | 0.03% | +7,382+39.3% | Added |
| Great West Life Assurance Co | 26,059 | $2.61M | 0.00% | −1,460−5.3% | Reduced |
| State of Wisconsin Investment Board | 25,647 | $2.57M | 0.01% | +3,400+15.3% | Added |
| Wealthfront Advisers LLC | 24,498 | $2.45M | 0.01% | +9,341+61.6% | Added |
| Worldquant Millennium Advisors LLC | 22,720 | $2.27M | 0.01% | 00.0% | Unchanged |
| American Century Companies Inc | 22,644 | $2.27M | 0.00% | −20,016−46.9% | Reduced |
| Knights of Columbus Asset Advisors LLC | 22,364 | $2.24M | 0.15% | −20,483−47.8% | Reduced |
| South Dakota Investment Council | 22,135 | $2.21M | 0.05% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 21,183 | $2.12M | 0.00% | −941−4.3% | Reduced |
| Dana Investment Advisors, Inc. | 19,966 | $2.00M | 0.07% | −235−1.2% | Reduced |
| Schonfeld Strategic Advisors LLC | 19,234 | $1.92M | 0.01% | −17,134−47.1% | Reduced |
| AQR Capital Management LLC | 19,094 | $1.88M | 0.00% | +1,668+9.6% | Added |
| MetLife Investment Management | 18,583 | $1.86M | 0.01% | −282−1.5% | Reduced |
| Recurrent Investment Advisors LLC | 18,098 | $1.81M | 0.15% | +2,980+19.7% | Added |
| APG Asset Management N.V. | 19,400 | $1.80M | 0.01% | −500−2.5% | Reduced |
| State of New Jersey Common Pension Fund D | 17,662 | $1.77M | 0.01% | +1,127+6.8% | Added |
| Centiva Capital, LP | 17,505 | $1.75M | 0.10% | +10,670+156.1% | Added |
| Mutual of America Capital Management LLC | 17,222 | $1.72M | 0.02% | −455−2.6% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 17,052 | $1.71M | 0.00% | −748−4.2% | Reduced |
| Brevan Howard Capital Management LP | 16,207 | $1.62M | 0.05% | +16,207 | New |
| Cresset Asset Management, LLC | 16,127 | $1.61M | 0.01% | −1,397−8.0% | Reduced |
| Royal London Asset Management Ltd | 15,982 | $1.60M | 0.00% | +76+0.5% | Added |
| Ensign Peak Advisors, Inc | 15,899 | $1.59M | 0.00% | −9,396−37.1% | Reduced |
| Amalgamated Bank | 15,575 | $1.56M | 0.01% | −107−0.7% | Reduced |
| Treasurer of the State of North Carolina | 15,342 | $1.53M | 0.01% | +600+4.1% | Added |
| XTX Topco Ltd | 14,995 | $1.50M | 0.08% | +14,995 | New |
| Pictet Asset Management Holding SA | 14,897 | $1.49M | 0.00% | −7,199−32.6% | Reduced |
| Kovitz Investment Group Partners, LLC | 14,664 | $1.47M | 0.01% | −1,358−8.5% | Reduced |
| Aquatic Capital Management LLC | 14,126 | $1.41M | 0.04% | +14,126 | New |
| New York State Common Retirement Fund | 13,975 | $1.40M | 0.00% | 00.0% | Unchanged |
| Oliver Luxxe Assets LLC | 13,885 | $1.39M | 0.26% | +1,123+8.8% | Added |
| Mn Services Vermogensbeheer B.V. | 13,700 | $1.37M | 0.01% | −1,900−12.2% | Reduced |
| Gries Financial LLC | 13,512 | $1.35M | 0.26% | +13,512 | New |
| Ambassador Advisors, LLC | 13,234 | $1.32M | 0.23% | −185−1.4% | Reduced |
| Korea Investment CORP | 12,611 | $1.26M | 0.00% | −1,016−7.5% | Reduced |
| Asset Management One Co.,Ltd. | 12,253 | $1.23M | 0.00% | +534+4.6% | Added |
| Yousif Capital Management, LLC | 12,146 | $1.21M | 0.01% | −41−0.3% | Reduced |
| KLP Kapitalforvaltning AS | 11,900 | $1.19M | 0.01% | 00.0% | Unchanged |
| Resona Asset Management Co.,Ltd. | 11,719 | $1.17M | 0.01% | 00.0% | Unchanged |
| Teachers Retirement System of the State of Kentucky | 11,715 | $1.17M | 0.01% | 00.0% | Unchanged |
| 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 |
| Keeley-Teton Advisors, LLC | 11,566 | $1.16M | 0.14% | −2,025−14.9% | Reduced |
| Arizona State Retirement System | 11,166 | $1.12M | 0.01% | −38−0.3% | Reduced |
| Susquehanna International Group, LLP | 11,084 | $1.11M | 0.00% | +6,774+157.2% | Added |
| Nomura Asset Management Co Ltd | 10,636 | $1.06M | 0.00% | +180+1.7% | Added |
| HSBC Holdings PLC | 10,640 | $1.06M | 0.00% | −15,784−59.7% | Reduced |
| Aigen Investment Management, LP | 10,572 | $1.06M | 0.17% | +5,321+101.3% | Added |
| Public Employees Retirement System of Ohio | 10,324 | $1.03M | 0.00% | −1,193−10.4% | Reduced |
| ISAM Funds (UK) Ltd | 10,300 | $1.03M | 0.51% | +10,300 | New |
| Axq Capital, LP | 10,139 | $1.01M | 0.41% | −1,958−16.2% | Reduced |
| Standard Life Aberdeen plc | 10,001 | $1.00M | 0.00% | +10,001 | New |
| Vident Advisory, LLC | 9,863 | $986.6K | 0.01% | +7,989+426.3% | Added |
| Louisiana State Employees Retirement System | 9,400 | $940.3K | 0.02% | +100+1.1% | Added |
| DnB Asset Management AS | 9,129 | $913.2K | 0.00% | −22,067−70.7% | Reduced |
| Jefferies Financial Group Inc. | 9,108 | $911.1K | 0.02% | +7,019+336.0% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 9,101 | $910.4K | 0.00% | 00.0% | Unchanged |
| Mercer Global Advisors Inc | 9,035 | $903.8K | 0.00% | −2,625−22.5% | Reduced |
| State of Michigan Retirement System | 9,000 | $900.3K | 0.01% | +100+1.1% | Added |
| Dark Forest Capital Management LP | 8,988 | $899.1K | 0.04% | +4,360+94.2% | Added |
| Sterling Capital Management LLC | 8,742 | $874.5K | 0.01% | −752−7.9% | Reduced |
| SEI Investments Co | 8,691 | $869.3K | 0.00% | +864+11.0% | Added |
| QRG Capital Management, Inc. | 8,680 | $868.2K | 0.01% | −1,588−15.5% | Reduced |
| Handelsbanken Fonder AB | 8,600 | $860.0K | 0.00% | 00.0% | Unchanged |
| JustInvest LLC | 8,265 | $826.7K | 0.01% | +1,341+19.4% | Added |
| Creative Planning | 8,018 | $802.0K | 0.00% | +1,246+18.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 7,999 | $800.1K | 0.00% | +608+8.2% | Added |
| New York State Teachers Retirement System | 7,902 | $790.0K | 0.00% | −200−2.5% | Reduced |
| Thrivent Financial for Lutherans | 7,846 | $785.0K | 0.00% | −28−0.4% | Reduced |
| Advisors Asset Management, Inc. | 7,622 | $762.4K | 0.01% | +416+5.8% | Added |
| Northwestern Mutual Investment Management Company, LLC | 7,440 | $744.2K | 0.01% | +30.0% | Added |
| British Columbia Investment Management Corp | 7,390 | $739.2K | 0.00% | −20.0% | Reduced |
| Stifel Financial Corp | 7,178 | $718.0K | 0.00% | +5,183+259.8% | Added |
| Appian Way Asset Management LP | 7,165 | $716.7K | 0.17% | −8,007−52.8% | Reduced |
| Illinois Municipal Retirement Fund | 7,075 | $707.7K | 0.01% | 00.0% | Unchanged |
| Ashton Thomas Private Wealth, LLC | 7,059 | $706.1K | 0.03% | +7,059 | New |
| New Mexico Educational Retirement Board | 7,000 | $700.0K | 0.03% | 00.0% | Unchanged |
| RiverFront Investment Group, LLC | 6,972 | $697.4K | 0.02% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 6,890 | $689.2K | 0.00% | −97−1.4% | Reduced |
| Oregon Public Employees Retirement Fund | 6,868 | $687.0K | 0.01% | +100+1.5% | Added |
| Xponance, Inc. | 6,776 | $677.8K | 0.01% | −101−1.5% | Reduced |
| Pettee Investors, Inc. | 6,711 | $671.3K | 0.40% | 00.0% | Unchanged |
| Petrus Trust Company, LTA | 6,709 | $671.1K | 0.06% | +288+4.5% | Added |
| Peterson Wealth Services | 6,578 | $658.0K | 0.20% | +178+2.8% | Added |
| CAPROCK Group, Inc. | 6,551 | $655.3K | 0.02% | +6,551 | New |
| Lighthouse Investment Partners, LLC | 6,105 | $610.7K | 0.03% | +6,105 | New |
| First Eagle Investment Management, LLC | 6,088 | $609.0K | 0.00% | +100+1.7% | Added |
| Adage Capital Partners GP, L.L.C. | 5,988 | $599.0K | 0.00% | −24,012−80.0% | Reduced |
| O'Shaughnessy Asset Management, LLC | 5,831 | $583.3K | 0.00% | +3,650+167.4% | Added |
| Allstate Corp | 5,807 | $580.9K | 0.02% | +5,807 | New |
| Toronto Dominion Bank | 5,791 | $579.3K | 0.00% | +601+11.6% | Added |
| Teacher Retirement System of Texas | 5,644 | $564.6K | 0.00% | +5,644 | New |
| Gotham Asset Management, LLC | 5,431 | $543.3K | 0.00% | +1,358+33.3% | Added |
| Denali Advisors LLC | 5,322 | $532.4K | 0.06% | −100−1.8% | Reduced |
| State of Tennessee, Treasury Department | 5,213 | $521.5K | 0.00% | −2,082−28.5% | Reduced |
| Unison Advisors LLC | 5,116 | $511.8K | 0.07% | +21+0.4% | Added |
| Ostrum Asset Management | 5,023 | $502.5K | 0.03% | +4,824+2,424.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 5,018 | $502.0K | 0.00% | 00.0% | Unchanged |
| Sequent Planning LLC | 4,980 | $498.2K | 0.18% | −13−0.3% | Reduced |
| Transce3nd, LLC | 4,991 | $497.8K | 0.22% | +585+13.3% | Added |