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 |
|---|---|---|---|---|---|
| Brown Brothers Harriman & Co | 4 | $0 | 0.00% | −73−94.8% | Reduced |
| 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 |
| Meridian Wealth Partners, LLC | 5 | $0 | 0.00% | +5 | New |
| TD Private Client Wealth LLC | 9 | $820 | 0.00% | 00.0% | Unchanged |
| Raffa Wealth Management, LLC | 9 | $820 | 0.00% | 00.0% | Unchanged |
| Canada Pension Plan Investment Board | 10 | $1.00K | 0.00% | 00.0% | Unchanged |
| Sound Income Strategies, LLC | 15 | $1.00K | 0.00% | 00.0% | Unchanged |
| Bellwether Advisors, LLC | 13 | $1.00K | 0.00% | 00.0% | Unchanged |
| Farmers & Merchants Investments Inc | 9 | $1.00K | 0.00% | +9 | New |
| O'Shaughnessy Asset Management, LLC | 9 | $1.00K | 0.00% | +9 | New |
| Clearstead Advisors, LLC | 19 | $2.00K | 0.00% | −13−40.6% | Reduced |
| 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 |
| Syverson Strege & Co | 27 | $2.00K | 0.00% | +27 | New |
| Lindbrook Capital, LLC | 20 | $2.00K | 0.00% | +20 | New |
| Heritage Wealth Management, LLC | 25 | $2.00K | 0.00% | +25 | New |
| Earnest Partners LLC | 45 | $4.00K | 0.00% | 00.0% | Unchanged |
| Meeder Asset Management Inc | 57 | $5.00K | 0.00% | −7,355−99.2% | Reduced |
| NEXT Financial Group, Inc | 57 | $5.00K | 0.00% | 00.0% | Unchanged |
| GPS Wealth Strategies Group, LLC | 50 | $5.00K | 0.00% | 00.0% | Unchanged |
| American Portfolios Advisors | 60 | $5.47K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 70 | $6.00K | 0.00% | 00.0% | Unchanged |
| Kowal Investment Group, LLC | 70 | $6.00K | 0.00% | +70 | New |
| Bell Investment Advisors, Inc | 61 | $6.00K | 0.00% | +61 | New |
| Cahill Financial Advisors Inc | 72 | $7.00K | 0.00% | +72 | New |
| Federation des caisses Desjardins du Quebec | 81 | $7.38K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 87 | $8.00K | 0.00% | +53+155.9% | Added |
| Rockefeller Capital Management L.P. | 106 | $9.00K | 0.00% | −23−17.8% | Reduced |
| Jackson, Grant Investment Advisers, Inc. | 109 | $10.0K | 0.00% | −90−45.2% | Reduced |
| Smith Group Asset Management, LLC | 110 | $10.0K | 0.00% | +110 | New |
| Signaturefd, LLC | 131 | $12.0K | 0.00% | +55+72.4% | Added |
| Dark Forest Capital Management LP | 154 | $14.0K | 0.00% | −566−78.6% | Reduced |
| Nisa Investment Advisors, LLC | 160 | $15.0K | 0.00% | 00.0% | Unchanged |
| Financial Management Professionals, Inc. | 180 | $16.0K | 0.00% | +39+27.7% | Added |
| TCI Wealth Advisors, Inc. | 190 | $17.0K | 0.00% | +187+6,233.3% | Added |
| Proequities, Inc. | 209 | $19.0K | 0.00% | +9+4.5% | Added |
| Parallel Advisors, LLC | 294 | $27.0K | 0.00% | +95+47.7% | Added |
| Deseret Mutual Benefit Administrators | 317 | $29.0K | 0.01% | 00.0% | Unchanged |
| Arcadia Investment Management Corp | 350 | $32.0K | 0.01% | 00.0% | Unchanged |
| American International Group, Inc. | 425 | $39.0K | 0.00% | −46−9.8% | Reduced |
| Berman Capital Advisors, LLC | 429 | $39.0K | 0.01% | +206+92.4% | Added |
| Koshinski Asset Management, Inc. | 517 | $40.8K | 0.00% | +517 | New |
| Quadrant Capital Group LLC | 545 | $50.0K | 0.01% | +15+2.8% | Added |
| Captrust Financial Advisors | 655 | $60.0K | 0.00% | −842−56.2% | Reduced |
| Denali Advisors LLC | 668 | $61.0K | 0.03% | +6+0.9% | Added |
| Itau Unibanco Holding S.A. | 933 | $85.0K | 0.00% | +933 | New |
| Metropolitan Life Insurance Co | 971 | $88.5K | 0.00% | −36−3.6% | Reduced |
| Eaton Vance Management | 1,000 | $91.0K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 1,112 | $101.0K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 1,258 | $115.0K | 0.07% | −14−1.1% | Reduced |
| The PNC Financial Services Group, Inc. | 1,281 | $116.0K | 0.00% | −204−13.7% | Reduced |
| Macquarie Group Ltd | 1,422 | $130.0K | 0.00% | 00.0% | Unchanged |
| Smithfield Trust Co | 1,594 | $145.0K | 0.01% | 00.0% | Unchanged |
| Gulf International Bank (UK) Ltd | 1,600 | $170.0K | 0.00% | 00.0% | Unchanged |
| Asset Management One Co.,Ltd. | 1,930 | $175.0K | 0.00% | 00.0% | Unchanged |
| Storebrand Asset Management AS | 2,085 | $190.0K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 2,390 | $218.0K | 0.00% | +204+9.3% | Added |
| Shay Capital LLC | 2,423 | $221.0K | 0.07% | +2,423 | New |
| XTX Topco Ltd | 2,454 | $224.0K | 0.08% | +2,454 | New |
| ProShare Advisors LLC | 2,487 | $227.0K | 0.00% | −470−15.9% | Reduced |
| Synovus Financial Corp | 2,542 | $230.0K | 0.00% | −1,473−36.7% | Reduced |
| Quantinno Capital Management LP | 2,576 | $235.0K | 0.26% | +8+0.3% | Added |
| Fox Run Management, L.L.C. | 2,590 | $236.0K | 0.15% | −763−22.8% | Reduced |
| Manufacturers Life Insurance Company, The | 2,620 | $239.0K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 2,682 | $244.0K | 0.00% | −2,270−45.8% | Reduced |
| Boothbay Fund Management, LLC | 2,734 | $249.0K | 0.01% | +2,734 | New |
| Ergoteles LLC | 2,746 | $250.0K | 0.01% | +2,746 | New |
| Principal Financial Group Inc | 2,764 | $252.0K | 0.00% | −106−3.7% | Reduced |
| New York State Teachers Retirement System | 2,800 | $255.0K | 0.00% | −100−3.4% | Reduced |
| Capula Management Ltd | 2,873 | $262.0K | 0.02% | +2,873 | New |
| Pictet Asset Management SA | 2,900 | $264.0K | 0.00% | +2,900 | New |
| Maryland State Retirement & Pension System | 2,848 | $265.0K | 0.01% | 00.0% | Unchanged |
| Regentatlantic Capital LLC | 2,933 | $267.0K | 0.01% | −69−2.3% | Reduced |
| Bourgeon Capital Management LLC | 3,000 | $273.0K | 0.06% | 00.0% | Unchanged |
| Group One Trading, L.P. | 2,996 | $273.0K | 0.01% | +2,259+306.5% | Added |
| Lazard Asset Management LLC | 3,036 | $276.0K | 0.00% | +2,528+497.6% | Added |
| Colony Group LLC | 3,043 | $277.0K | 0.01% | +210+7.4% | Added |
| Valeo Financial Advisors, LLC | 3,107 | $283.0K | 0.02% | +3,107 | New |
| Paradigm Asset Management Co LLC | 3,200 | $291.6K | 0.08% | −400−11.1% | Reduced |
| Wolverine Trading, LLC | 3,170 | $292.0K | 0.01% | +3,170 | New |
| BTC Capital Management, Inc. | 3,290 | $300.0K | 0.03% | +3,290 | New |
| Ci Investments Inc. | 3,511 | $320.0K | 0.00% | +30+0.9% | Added |
| Unison Advisors LLC | 3,699 | $337.0K | 0.08% | +10+0.3% | Added |
| SG Americas Securities, LLC | 3,725 | $339.0K | 0.00% | +93+2.6% | Added |
| Keybank National Association | 3,744 | $341.0K | 0.00% | −770−17.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 3,742 | $341.0K | 0.00% | +3,742 | New |
| Algert Global LLC | 3,770 | $344.0K | 0.05% | +3,770 | New |
| Gyon Technologies Capital Management, LP | 3,773 | $344.0K | 0.09% | +3,773 | New |
| Deutsche Bank AG | 3,818 | $348.0K | 0.00% | −191,221−98.0% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 3,838 | $350.0K | 0.02% | +1,156+43.1% | Added |
| Ameritas Investment Partners, Inc. | 3,900 | $355.0K | 0.01% | 00.0% | Unchanged |
| Leonteq Securities AG | 4,086 | $372.4K | 0.02% | +3,723+1,025.6% | Added |
| State of Wisconsin Investment Board | 4,157 | $379.0K | 0.00% | +201+5.1% | Added |
| Investors Research Corp | 4,200 | $383.0K | 0.13% | 00.0% | Unchanged |
| American Century Companies Inc | 4,467 | $407.0K | 0.00% | +815+22.3% | Added |
| Point72 Hong Kong Ltd | 4,484 | $409.0K | 0.03% | −7,962−64.0% | Reduced |
| Aigen Investment Management, LP | 4,668 | $425.0K | 0.08% | +4,668 | New |
| Illinois Municipal Retirement Fund | 4,888 | $445.0K | 0.02% | 00.0% | Unchanged |