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 2021
Institutional positions in Westlake Corp as of Jun 30, 2021. 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
- 276
- +40 vs. Q1 2021
- Shares held
- 33.5M
- −1.18M (−3.4%) vs. Q1 2021
- Total value
- $3.02B
- −$61.6M (−2.0%) vs. Q1 2021
- New holders
- 61
- 90 more added
- Sold out
- 21
- 73 more reduced
4 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2021: 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 2021
Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Banco Santander, S.A. | 2,865 | $258.0K | 0.00% | +2,865 | New |
| Colony Group LLC | 2,833 | $255.0K | 0.01% | −307−9.8% | Reduced |
| Cipher Capital LP | 2,798 | $252.0K | 0.14% | −16,263−85.3% | Reduced |
| Campbell & CO Investment Adviser LLC | 2,800 | $252.0K | 0.11% | −600−17.6% | Reduced |
| Maryland State Retirement & Pension System | 2,848 | $251.0K | 0.01% | 00.0% | Unchanged |
| Martingale Asset Management L P | 2,760 | $249.0K | 0.00% | +2,760 | New |
| Hennion & Walsh Asset Management, Inc. | 2,682 | $242.0K | 0.01% | +2,682 | New |
| Manufacturers Life Insurance Company, The | 2,620 | $236.0K | 0.00% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 2,568 | $231.0K | 0.26% | 00.0% | Unchanged |
| Harbor Financial Services, LLC | 2,500 | $225.0K | 0.09% | +2,500 | New |
| Two Sigma Securities, LLC | 2,476 | $223.0K | 0.06% | +2,476 | New |
| PEAK6 Investments LLC | 2,419 | $218.0K | 0.01% | −3,056−55.8% | Reduced |
| Ensign Peak Advisors, Inc | 2,325 | $209.0K | 0.00% | +1,970+554.9% | Added |
| Prelude Capital Management, LLC | 2,247 | $202.0K | 0.01% | +2,247 | New |
| US Bancorp | 2,186 | $197.0K | 0.00% | +61+2.9% | Added |
| Quantbot Technologies LP | 2,153 | $193.0K | 0.02% | +2,153 | New |
| Storebrand Asset Management AS | 2,085 | $187.8K | 0.00% | 00.0% | Unchanged |
| Asset Management One Co.,Ltd. | 1,930 | $173.0K | 0.00% | 00.0% | Unchanged |
| FORA Capital, LLC | 1,705 | $154.0K | 0.03% | +1,705 | New |
| Smithfield Trust Co | 1,594 | $144.0K | 0.01% | 00.0% | Unchanged |
| Gulf International Bank (UK) Ltd | 1,600 | $142.0K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 1,497 | $135.0K | 0.00% | −100−6.3% | Reduced |
| The PNC Financial Services Group, Inc. | 1,485 | $134.0K | 0.00% | +228+18.1% | Added |
| Macquarie Group Ltd | 1,422 | $128.0K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 1,272 | $115.0K | 0.07% | +1,272 | New |
| Tower Research Capital LLC (TRC) | 1,195 | $107.0K | 0.00% | −6,457−84.4% | Reduced |
| Simplex Trading, LLC | 1,112 | $100.0K | 0.00% | −89−7.4% | Reduced |
| Metropolitan Life Insurance Co | 1,007 | $90.7K | 0.00% | +321+46.8% | Added |
| Eaton Vance Management | 1,000 | $90.0K | 0.00% | −165−14.2% | Reduced |
| Group One Trading, L.P. | 737 | $66.0K | 0.00% | +376+104.2% | Added |
| Dark Forest Capital Management LP | 720 | $65.0K | 0.03% | +720 | New |
| Denali Advisors LLC | 662 | $60.0K | 0.02% | +200+43.3% | Added |
| Quadrant Capital Group LLC | 530 | $48.0K | 0.01% | +3+0.6% | Added |
| Lazard Asset Management LLC | 508 | $45.0K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 471 | $42.0K | 0.00% | +65+16.0% | Added |
| Advisory Services Network, LLC | 408 | $37.0K | 0.00% | +408 | New |
| Leonteq Securities AG | 363 | $32.7K | 0.00% | +363 | New |
| Arcadia Investment Management Corp | 350 | $32.0K | 0.01% | 00.0% | Unchanged |
| Deseret Mutual Benefit Administrators | 317 | $29.0K | 0.01% | +317 | New |
| Berman Capital Advisors, LLC | 223 | $20.0K | 0.00% | +14+6.7% | Added |
| Proequities, Inc. | 200 | $18.0K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 199 | $18.0K | 0.00% | 00.0% | Unchanged |
| Jackson, Grant Investment Advisers, Inc. | 199 | $18.0K | 0.01% | +22+12.4% | Added |
| Nisa Investment Advisors, LLC | 160 | $14.0K | 0.00% | −4,000−96.2% | Reduced |
| Financial Management Professionals, Inc. | 141 | $13.0K | 0.00% | +141 | New |
| Rockefeller Capital Management L.P. | 129 | $11.0K | 0.00% | +23+21.7% | Added |
| Smith Asset Management Group LP | 110 | $10.0K | 0.00% | +10+10.0% | Added |
| Covington Capital Management | 100 | $9.00K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 81 | $7.30K | 0.00% | 00.0% | Unchanged |
| Brown Brothers Harriman & Co | 77 | $7.00K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 76 | $7.00K | 0.00% | +6+8.6% | Added |
| Massmutual Trust Co FSB | 70 | $6.00K | 0.00% | +70 | New |
| American Portfolios Advisors | 60 | $5.41K | 0.00% | 00.0% | Unchanged |
| GPS Wealth Strategies Group, LLC | 50 | $5.00K | 0.00% | 00.0% | Unchanged |
| CVA Family Office, LLC | 55 | $5.00K | 0.00% | +5+10.0% | Added |
| NEXT Financial Group, Inc | 57 | $5.00K | 0.00% | +57 | New |
| Earnest Partners LLC | 45 | $4.00K | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 32 | $3.00K | 0.00% | −39−54.9% | Reduced |
| Huntington National Bank | 34 | $3.00K | 0.00% | 00.0% | Unchanged |
| Valley National Advisers Inc | 34 | $3.00K | 0.00% | 00.0% | Unchanged |
| Enterprise Financial Services Corp | 31 | $3.00K | 0.00% | 00.0% | Unchanged |
| Reilly Financial Advisors, LLC | 30 | $3.00K | 0.00% | 00.0% | Unchanged |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 32 | $3.00K | 0.00% | +32 | New |
| Plante Moran Financial Advisors, LLC | 25 | $2.00K | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 18 | $2.00K | 0.00% | 00.0% | Unchanged |
| Canada Pension Plan Investment Board | 10 | $1.00K | 0.00% | −19,763−99.9% | Reduced |
| Sound Income Strategies, LLC | 15 | $1.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 10 | $1.00K | 0.00% | 00.0% | Unchanged |
| Bellwether Advisors, LLC | 13 | $1.00K | 0.00% | 00.0% | Unchanged |
| Strategic Blueprint, LLC | 7 | $1.00K | 0.00% | +7 | New |
| TD Private Client Wealth LLC | 9 | $811 | 0.00% | 00.0% | Unchanged |
| Raffa Wealth Management, LLC | 9 | $811 | 0.00% | 00.0% | Unchanged |
| TCI Wealth Advisors, Inc. | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Glassman Wealth Services | 3 | $0 | 0.00% | 00.0% | Unchanged |
| Zions Bancorporation, N.A. | 5 | $0 | 0.00% | 00.0% | Unchanged |
| Your Advocates Ltd., LLP | 5 | $0 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Weiss Multi-Strategy Advisers LLC | 0 | $0 | 0.00% | −162,693−100.0% | Sold out |
| Sandler Capital Management | 0 | $0 | 0.00% | −148,380−100.0% | Sold out |
| California Public Employees Retirement System | 0 | $0 | 0.00% | −68,148−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −60,100−100.0% | Sold out |
| Appian Way Asset Management LP | 0 | $0 | 0.00% | −41,333−100.0% | Sold out |
| Three Peaks Capital Management, LLC | 0 | $0 | 0.00% | −25,623−100.0% | Sold out |
| Capital CS Group, LLC | 0 | $0 | 0.00% | −14,799−100.0% | Sold out |
| Summit Street Capital Management, LLC | 0 | $0 | 0.00% | −7,628−100.0% | Sold out |
| Yorktown Management & Research Co Inc | 0 | $0 | 0.00% | −6,900−100.0% | Sold out |
| AMP Capital Investors Ltd | 0 | $0 | 0.00% | −5,415−100.0% | Sold out |
| Caxton Associates LP | 0 | $0 | 0.00% | −3,803−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −2,968−100.0% | Sold out |
| Gyon Technologies Capital Management, LP | 0 | $0 | 0.00% | −2,905−100.0% | Sold out |
| Neo Ivy Capital Management | 0 | $0 | 0.00% | −2,387−100.0% | Sold out |
| Standard Life Aberdeen plc | 0 | $0 | 0.00% | −2,333−100.0% | Sold out |
| Spire Wealth Management | 0 | $0 | 0.00% | −328−100.0% | Sold out |
| San Francisco Sentry Investment Group (Ca) | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −104−100.0% | Sold out |
| Washington Trust Co | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Alpha DNA Investment Management LLC | 0 | $0 | 0.00% | −16−100.0% | Sold out |
| Bokf, NA | – | – | – | – | Not filed |
| BBVA USA Bancshares, Inc. | – | – | – | – | Not filed |
| Kaizen Financial Strategies | – | – | – | – | Not filed |