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 2023
Institutional positions in Westlake Corp as of Mar 31, 2023. 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
- 342
- +6 vs. Q4 2022
- Shares held
- 38.3M
- +1.96M (+5.4%) vs. Q4 2022
- Total value
- $4.40B
- +$671.8M (+18.0%) vs. Q4 2022
- New holders
- 49
- 108 more added
- Sold out
- 43
- 123 more reduced
8 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| LMR Partners LLP | 12,629 | $1.46M | 0.03% | +12,629 | New |
| Recurrent Investment Advisors LLC | 12,731 | $1.48M | 0.29% | +3,100+32.2% | Added |
| Russell Investments Group, Ltd. | 12,768 | $1.48M | 0.00% | +997+8.5% | Added |
| O'Shaughnessy Asset Management, LLC | 12,916 | $1.50M | 0.02% | −22,083−63.1% | Reduced |
| New York State Teachers Retirement System | 13,092 | $1.52M | 0.00% | +391+3.1% | Added |
| Panagora Asset Management Inc | 13,147 | $1.52M | 0.01% | −25,329−65.8% | Reduced |
| Two Sigma Investments, LP | 13,500 | $1.57M | 0.00% | +3,200+31.1% | Added |
| Ameritas Investment Partners, Inc. | 13,995 | $1.62M | 0.06% | 00.0% | Unchanged |
| Greenland Capital Management LP | 14,000 | $1.62M | 0.19% | +8,000+133.3% | Added |
| Allianz Asset Management GmbH | 14,183 | $1.64M | 0.00% | +376+2.7% | Added |
| Asset Management One Co.,Ltd. | 14,338 | $1.66M | 0.01% | −328−2.2% | Reduced |
| CWM Advisors, LLC | 14,394 | $1.67M | 0.21% | −99−0.7% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 15,510 | $1.80M | 0.02% | +19+0.1% | Added |
| Oregon Public Employees Retirement Fund | 15,999 | $1.86M | 0.02% | −472−2.9% | Reduced |
| Thrivent Financial for Lutherans | 16,015 | $1.86M | 0.00% | −84−0.5% | Reduced |
| Korea Investment CORP | 16,281 | $1.89M | 0.01% | −104,984−86.6% | Reduced |
| Navellier & Associates Inc | 16,413 | $1.90M | 0.40% | −404−2.4% | Reduced |
| SEI Investments Co | 16,485 | $1.91M | 0.00% | +1,334+8.8% | Added |
| Livforsakringsbolaget Skandia, Omsesidigt | 16,950 | $1.97M | 0.21% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 16,973 | $1.97M | 0.00% | +560+3.4% | Added |
| Public Employees Retirement System of Ohio | 17,021 | $1.97M | 0.01% | −497−2.8% | Reduced |
| CI Private Wealth, LLC | 17,021 | $1.97M | 0.01% | +905+5.6% | Added |
| Twin Capital Management Inc | 17,681 | $2.05M | 0.28% | −1,427−7.5% | Reduced |
| Treasurer of the State of North Carolina | 17,769 | $2.06M | 0.01% | +420+2.4% | Added |
| Yousif Capital Management, LLC | 18,312 | $2.12M | 0.03% | −155−0.8% | Reduced |
| Nisa Investment Advisors, LLC | 18,472 | $2.14M | 0.02% | +10,611+135.0% | Added |
| Agf Management Ltd | 19,208 | $2.23M | 0.02% | +542+2.9% | Added |
| LMCG Investments, LLC | 19,357 | $2.25M | 0.15% | +19,357 | New |
| California Public Employees Retirement System | 20,464 | $2.37M | 0.00% | +20,464 | New |
| Gotham Asset Management, LLC | 20,929 | $2.43M | 0.06% | +6,422+44.3% | Added |
| MetLife Investment Management | 21,086 | $2.45M | 0.02% | −565−2.6% | Reduced |
| Prudential Financial Inc | 23,830 | $2.47M | 0.00% | −8,026−25.2% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 21,377 | $2.48M | 0.01% | −35−0.2% | Reduced |
| Citigroup Inc | 21,686 | $2.52M | 0.00% | −2,035−8.6% | Reduced |
| Amalgamated Bank | 22,161 | $2.57M | 0.02% | −3,582−13.9% | Reduced |
| Squarepoint Ops LLC | 22,329 | $2.59M | 0.02% | −18,766−45.7% | Reduced |
| Advisors Asset Management, Inc. | 22,429 | $2.60M | 0.05% | +160+0.7% | Added |
| Pinebridge Investments, L.P. | 22,696 | $2.63M | 0.03% | −362−1.6% | Reduced |
| D. E. Shaw & Co., Inc. | 22,887 | $2.65M | 0.00% | −38,129−62.5% | Reduced |
| Advisor Group Holdings, Inc. | 22,993 | $2.66M | 0.01% | +2,652+13.0% | Added |
| State of New Jersey Common Pension Fund D | 22,995 | $2.67M | 0.01% | 00.0% | Unchanged |
| DnB Asset Management AS | 23,127 | $2.68M | 0.02% | +11,316+95.8% | Added |
| KBC Group NV | 23,218 | $2.69M | 0.01% | +9,297+66.8% | Added |
| Aviva PLC | 24,733 | $2.87M | 0.01% | −10,282−29.4% | Reduced |
| Acadian Asset Management LLC | 24,765 | $2.87M | 0.01% | −21,116−46.0% | Reduced |
| LPL Financial LLC | 25,290 | $2.93M | 0.00% | −1,023−3.9% | Reduced |
| PointState Capital LP | 25,986 | $3.01M | 0.17% | +25,986 | New |
| Price T Rowe Associates Inc | 27,267 | $3.16M | 0.00% | +295+1.1% | Added |
| Mutual of America Capital Management LLC | 27,689 | $3.21M | 0.04% | −578−2.0% | Reduced |
| Manufacturers Life Insurance Company, The | 28,001 | $3.25M | 0.00% | −1,138−3.9% | Reduced |
| Deutsche Bank AG | 28,126 | $3.26M | 0.00% | +2,348+9.1% | Added |
| Mercer Global Advisors Inc | 28,131 | $3.26M | 0.01% | −795−2.7% | Reduced |
| Great West Life Assurance Co | 28,152 | $3.27M | 0.01% | −1,240−4.2% | Reduced |
| Clark Estates Inc | 28,600 | $3.32M | 0.66% | −6,000−17.3% | Reduced |
| State of Alaska, Department of Revenue | 28,679 | $3.33M | 0.04% | −55−0.2% | Reduced |
| Wellington Management Group LLP | 28,756 | $3.34M | 0.00% | −17,591−38.0% | Reduced |
| Swedbank AB | 28,953 | $3.36M | 0.01% | 00.0% | Unchanged |
| Royal Bank of Canada | 29,173 | $3.38M | 0.00% | +2,498+9.4% | Added |
| Amundi | 30,976 | $3.55M | 0.00% | −22,321−41.9% | Reduced |
| Ambassador Advisors, LLC | 31,550 | $3.58M | 0.81% | −7,600−19.4% | Reduced |
| Texas Permanent School Fund | 30,882 | $3.58M | 0.04% | +7,732+33.4% | Added |
| Hussman Strategic Advisors, Inc. | 31,000 | $3.60M | 0.56% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 32,321 | $3.75M | 0.25% | −1,395−4.1% | Reduced |
| Barclays PLC | 33,290 | $3.86M | 0.00% | −3,101−8.5% | Reduced |
| New York State Common Retirement Fund | 33,494 | $3.88M | 0.01% | −2,809−7.7% | Reduced |
| State Board of Administration of Florida Retirement System | 34,153 | $3.96M | 0.01% | −2,580−7.0% | Reduced |
| State of Tennessee, Treasury Department | 34,982 | $4.06M | 0.02% | −2,284−6.1% | Reduced |
| Smith, Graham & Co., Investment Advisors, LP | 36,025 | $4.18M | 0.51% | −894−2.4% | Reduced |
| Tudor Investment Corp Et Al | 37,244 | $4.32M | 0.08% | +37,244 | New |
| State of Wisconsin Investment Board | 38,982 | $4.52M | 0.01% | +19,844+103.7% | Added |
| Envestnet Asset Management Inc | 554,086 | $4.87M | 0.00% | +501,774+959.2% | Added |
| BNP Paribas Arbitrage, SA | 42,007 | $4.87M | 0.01% | +9,568+29.5% | Added |
| Retirement Systems of Alabama | 44,994 | $5.22M | 0.02% | −392−0.9% | Reduced |
| STRS Ohio | 47,100 | $5.46M | 0.02% | −3,804−7.5% | Reduced |
| Fort Pitt Capital Group, LLC | 47,539 | $5.51M | 0.21% | −63,821−57.3% | Reduced |
| Alyeska Investment Group, L.P. | 49,077 | $5.69M | 0.05% | +13,677+38.6% | Added |
| American International Group, Inc. | 53,118 | $6.16M | 0.04% | −498−0.9% | Reduced |
| Wedge Capital Management L L P | 53,315 | $6.18M | 0.10% | −12,730−19.3% | Reduced |
| Key Group Holdings (Cayman), Ltd. | 55,000 | $6.38M | 0.50% | +55,000 | New |
| Credit Suisse AG | 56,194 | $6.52M | 0.01% | −23,118−29.1% | Reduced |
| AustralianSuper Pty Ltd | 57,032 | $6.61M | 0.05% | +57,032 | New |
| California State Teachers Retirement System | 58,303 | $6.76M | 0.01% | −645−1.1% | Reduced |
| Cerity Partners LLC | 61,892 | $7.18M | 0.03% | +61,892 | New |
| Contravisory Investment Management, Inc. | 64,716 | $7.51M | 2.12% | −1,044−1.6% | Reduced |
| Ensign Peak Advisors, Inc | 65,550 | $7.60M | 0.02% | +4,867+8.0% | Added |
| Winmill & Co. Inc | 70,000 | $8.12M | 3.03% | 00.0% | Unchanged |
| Moran Wealth Management, LLC | 74,904 | $8.69M | 0.33% | +74,904 | New |
| Vident Investment Advisory, LLC | 75,342 | $8.74M | 0.28% | −6,220−7.6% | Reduced |
| Alliancebernstein L.P. | 79,463 | $9.22M | 0.00% | −1,539−1.9% | Reduced |
| Susquehanna Fundamental Investments, LLC | 89,272 | $10.4M | 0.24% | −5,214−5.5% | Reduced |
| Rhumbline Advisers | 101,868 | $11.8M | 0.01% | −781−0.8% | Reduced |
| Virginia Retirement Systems Et Al | 102,361 | $11.9M | 0.12% | −19,939−16.3% | Reduced |
| Sprott Inc. | 105,000 | $12.2M | 1.04% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 105,616 | $12.2M | 0.00% | −20,428−16.2% | Reduced |
| Wells Fargo & Company | 112,549 | $13.1M | 0.00% | −14,714−11.6% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 113,504 | $13.2M | 0.01% | +3,613+3.3% | Added |
| Anomaly Capital Management, LP | 113,850 | $13.2M | 0.58% | +113,850 | New |
| Luminus Management LLC | 118,600 | $13.8M | 3.38% | +28,050+31.0% | Added |
| Lazard Asset Management LLC | 124,806 | $14.5M | 0.02% | +112,504+914.5% | Added |
| UBS Asset Management Americas Inc | 128,242 | $14.9M | 0.01% | +6,743+5.5% | Added |