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 |
|---|---|---|---|---|---|
| Wellington Management Group LLP | 32,831 | $2.99M | 0.00% | +2,497+8.2% | Added |
| State of New Jersey Common Pension Fund D | 32,548 | $2.97M | 0.01% | +8,301+34.2% | Added |
| Rhumbline Advisers | 31,505 | $2.87M | 0.00% | −1,123−3.4% | Reduced |
| Jane Street Group, LLC | 30,166 | $2.75M | 0.01% | +3,938+15.0% | Added |
| Royal London Asset Management Ltd | 30,149 | $2.75M | 0.01% | +17,072+130.5% | Added |
| Advisors Asset Management, Inc. | 28,443 | $2.59M | 0.04% | +1,623+6.1% | Added |
| Man Group plc | 25,578 | $2.33M | 0.01% | −1,400−5.2% | Reduced |
| Paradigm Capital Management Inc | 25,100 | $2.29M | 0.12% | 00.0% | Unchanged |
| SeaTown Holdings Pte. Ltd. | 25,000 | $2.28M | 0.10% | +25,000 | New |
| Alaska Permanent Fund Corp | 24,000 | $2.19M | 0.04% | 00.0% | Unchanged |
| Verition Fund Management LLC | 23,645 | $2.15M | 0.03% | +10,376+78.2% | Added |
| Parallax Volatility Advisers, L.P. | 22,155 | $2.02M | 0.02% | +22,155 | New |
| Public Employees Retirement System of Ohio | 20,897 | $1.91M | 0.01% | −355−1.7% | Reduced |
| Blueshift Asset Management, LLC | 20,641 | $1.88M | 0.11% | +17,125+487.1% | Added |
| Truist Financial Corp | 20,110 | $1.83M | 0.00% | −517−2.5% | Reduced |
| Gotham Asset Management, LLC | 20,078 | $1.83M | 0.07% | −4,152−17.1% | Reduced |
| BNP Paribas Arbitrage, SA | 19,856 | $1.81M | 0.00% | +16,733+535.8% | Added |
| Twin Capital Management Inc | 18,440 | $1.68M | 0.17% | −2,760−13.0% | Reduced |
| PEAK6 Investments LLC | 17,927 | $1.63M | 0.03% | +15,508+641.1% | Added |
| Two Sigma Advisers, LP | 17,000 | $1.55M | 0.00% | −5,200−23.4% | Reduced |
| Agf Investments Inc. | 16,628 | $1.51M | 0.01% | +316+1.9% | Added |
| AlphaCrest Capital Management LLC | 16,023 | $1.46M | 0.08% | −29,537−64.8% | Reduced |
| Susquehanna Fundamental Investments, LLC | 15,990 | $1.46M | 0.03% | −1,935−10.8% | Reduced |
| HSBC Holdings PLC | 14,828 | $1.36M | 0.00% | +1,355+10.1% | Added |
| Capital Fund Management S.A. | 13,551 | $1.24M | 0.03% | −2,107−13.5% | Reduced |
| APG Asset Management N.V. | 15,400 | $1.21M | 0.00% | +15,400 | New |
| Mitsubishi UFJ Trust & Banking Corp | 13,229 | $1.21M | 0.00% | −500−3.6% | Reduced |
| Bokf, NA | 12,493 | $1.14M | 0.02% | +12,493 | New |
| Centiva Capital, LP | 12,105 | $1.10M | 0.09% | +944+8.5% | Added |
| Treasurer of the State of North Carolina | 11,942 | $1.09M | 0.01% | +409+3.5% | Added |
| BBVA USA | 11,088 | $1.01M | 0.06% | −929−7.7% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 10,807 | $985.0K | 0.00% | +7,487+225.5% | Added |
| Golden State Equity Partners | 10,704 | $976.0K | 0.40% | +10,704 | New |
| Arizona State Retirement System | 10,471 | $954.0K | 0.01% | +46+0.4% | Added |
| Comerica Bank | 10,513 | $946.0K | 0.01% | +4,754+82.5% | Added |
| Occudo Quantitative Strategies LP | 10,167 | $927.0K | 0.11% | +6,451+173.6% | Added |
| Bradley Foster & Sargent Inc | 10,116 | $922.0K | 0.02% | −5,252−34.2% | Reduced |
| Cinctive Capital Management LP | 10,000 | $911.0K | 0.05% | +5,000+100.0% | Added |
| Quantbot Technologies LP | 10,005 | $911.0K | 0.07% | +7,852+364.7% | Added |
| Marshall Wace, LLP | 9,979 | $910.0K | 0.00% | −5,958−37.4% | Reduced |
| Diversified Trust Co | 9,978 | $909.0K | 0.03% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 9,442 | $861.0K | 0.00% | +3,629+62.4% | Added |
| Maverick Capital LtdSuperinvestorMaverick Capital | 9,397 | $856.0K | 0.01% | +9,397 | New |
| Sumitomo Mitsui Trust Holdings, Inc. | 9,251 | $843.0K | 0.00% | 00.0% | Unchanged |
| Grantham, Mayo, Van Otterloo & Co. LLC | 9,139 | $833.0K | 0.00% | +6,139+204.6% | Added |
| Bowling Portfolio Management LLC | 9,080 | $828.0K | 0.19% | −25−0.3% | Reduced |
| Mercer Global Advisors Inc | 8,813 | $803.0K | 0.01% | −5,969−40.4% | Reduced |
| Gsa Capital Partners LLP | 8,769 | $799.0K | 0.08% | −10,518−54.5% | Reduced |
| Amalgamated Bank | 8,594 | $783.0K | 0.01% | −332−3.7% | Reduced |
| Raymond James & Associates | 8,320 | $758.0K | 0.00% | −198−2.3% | Reduced |
| Walleye Trading LLC | 7,382 | $673.0K | 0.02% | +1,883+34.2% | Added |
| Seven Eight Capital, LP | 7,328 | $668.0K | 0.06% | −1,000−12.0% | Reduced |
| LPL Financial LLC | 7,255 | $661.0K | 0.00% | +365+5.3% | Added |
| Winton Group Ltd | 7,247 | $660.0K | 0.04% | +1,736+31.5% | Added |
| Empirical Finance, LLC | 6,810 | $621.0K | 0.09% | +6,810 | New |
| Recurrent Investment Advisors LLC | 6,784 | $618.0K | 0.27% | 00.0% | Unchanged |
| Voya Investment Management LLC | 6,721 | $613.0K | 0.00% | −49−0.7% | Reduced |
| Pettee Investors, Inc. | 6,711 | $612.0K | 0.28% | 00.0% | Unchanged |
| Handelsbanken Fonder AB | 6,200 | $565.0K | 0.00% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 6,182 | $563.0K | 0.00% | +1,154+23.0% | Added |
| Versor Investments LP | 6,143 | $560.0K | 0.02% | −1,600−20.7% | Reduced |
| Utah Retirement Systems | 5,988 | $546.0K | 0.01% | −600−9.1% | Reduced |
| Advisor Group Holdings, Inc. | 5,930 | $540.0K | 0.00% | +2,887+94.9% | Added |
| Kennedy Capital Management, Inc. | 5,904 | $538.0K | 0.01% | −339−5.4% | Reduced |
| Great West Life Assurance Co | 5,798 | $531.0K | 0.00% | −2,473−29.9% | Reduced |
| Mackenzie Financial Corp | 5,800 | $529.0K | 0.00% | +500+9.4% | Added |
| Hillsdale Investment Management Inc. | 5,800 | $528.0K | 0.04% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 5,792 | $528.0K | 0.03% | +3,545+157.8% | Added |
| Aviva PLC | 5,669 | $517.0K | 0.00% | −603−9.6% | Reduced |
| Tower Research Capital LLC (TRC) | 5,571 | $507.0K | 0.01% | +4,376+366.2% | Added |
| CIBC Asset Management Inc | 5,226 | $476.0K | 0.00% | +407+8.4% | Added |
| Engineers Gate Manager LP | 4,930 | $449.0K | 0.03% | −18,369−78.8% | Reduced |
| Illinois Municipal Retirement Fund | 4,888 | $445.0K | 0.02% | 00.0% | Unchanged |
| Aigen Investment Management, LP | 4,668 | $425.0K | 0.08% | +4,668 | New |
| Point72 Hong Kong Ltd | 4,484 | $409.0K | 0.03% | −7,962−64.0% | Reduced |
| American Century Companies Inc | 4,467 | $407.0K | 0.00% | +815+22.3% | Added |
| Investors Research Corp | 4,200 | $383.0K | 0.13% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 4,157 | $379.0K | 0.00% | +201+5.1% | Added |
| Leonteq Securities AG | 4,086 | $372.4K | 0.02% | +3,723+1,025.6% | Added |
| Ameritas Investment Partners, Inc. | 3,900 | $355.0K | 0.01% | 00.0% | Unchanged |
| Hennion & Walsh Asset Management, Inc. | 3,838 | $350.0K | 0.02% | +1,156+43.1% | Added |
| Deutsche Bank AG | 3,818 | $348.0K | 0.00% | −191,221−98.0% | Reduced |
| 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 |
| 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 |
| SG Americas Securities, LLC | 3,725 | $339.0K | 0.00% | +93+2.6% | Added |
| Unison Advisors LLC | 3,699 | $337.0K | 0.08% | +10+0.3% | Added |
| Ci Investments Inc. | 3,511 | $320.0K | 0.00% | +30+0.9% | Added |
| BTC Capital Management, Inc. | 3,290 | $300.0K | 0.03% | +3,290 | New |
| Wolverine Trading, LLC | 3,170 | $292.0K | 0.01% | +3,170 | New |
| Paradigm Asset Management Co LLC | 3,200 | $291.6K | 0.08% | −400−11.1% | Reduced |
| Valeo Financial Advisors, LLC | 3,107 | $283.0K | 0.02% | +3,107 | New |
| Colony Group LLC | 3,043 | $277.0K | 0.01% | +210+7.4% | Added |
| Lazard Asset Management LLC | 3,036 | $276.0K | 0.00% | +2,528+497.6% | Added |
| 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 |
| Regentatlantic Capital LLC | 2,933 | $267.0K | 0.01% | −69−2.3% | Reduced |
| Maryland State Retirement & Pension System | 2,848 | $265.0K | 0.01% | 00.0% | Unchanged |
| Pictet Asset Management SA | 2,900 | $264.0K | 0.00% | +2,900 | New |