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, Q3 2021
Institutional positions in Westlake Corp as of Sep 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
- 272
- 0 vs. Q2 2021
- Shares held
- 34.5M
- +981.4K (+2.9%) vs. Q2 2021
- Total value
- $3.15B
- +$128.0M (+4.2%) vs. Q2 2021
- New holders
- 41
- 104 more added
- Sold out
- 41
- 84 more reduced
4 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2021
Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Martingale Asset Management L P | 0 | $0 | 0.00% | −2,760−100.0% | Sold out |
| Harbor Financial Services, LLC | 0 | $0 | 0.00% | −2,500−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −2,476−100.0% | Sold out |
| Ensign Peak Advisors, Inc | 0 | $0 | 0.00% | −2,325−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −1,705−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −408−100.0% | Sold out |
| Covington Capital Management | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| CVA Family Office, LLC | 0 | $0 | 0.00% | −55−100.0% | Sold out |
| Valley National Advisers Inc | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 0 | $0 | 0.00% | −32−100.0% | Sold out |
| Enterprise Financial Services Corp | 0 | $0 | 0.00% | −31−100.0% | Sold out |
| Reilly Financial Advisors, LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Strategic Blueprint, LLC | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Pictet Asset Management Ltd | – | – | – | – | Not filed |
| Cipher Capital LP | – | – | – | – | Not filed |
| Smith Asset Management Group LP | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |