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 |
|---|---|---|---|---|---|
| Engineers Gate Manager LP | 4,930 | $449.0K | 0.03% | −18,369−78.8% | Reduced |
| CIBC Asset Management Inc | 5,226 | $476.0K | 0.00% | +407+8.4% | Added |
| Tower Research Capital LLC (TRC) | 5,571 | $507.0K | 0.01% | +4,376+366.2% | Added |
| Aviva PLC | 5,669 | $517.0K | 0.00% | −603−9.6% | Reduced |
| 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 |
| Mackenzie Financial Corp | 5,800 | $529.0K | 0.00% | +500+9.4% | Added |
| Great West Life Assurance Co | 5,798 | $531.0K | 0.00% | −2,473−29.9% | Reduced |
| Kennedy Capital Management, Inc. | 5,904 | $538.0K | 0.01% | −339−5.4% | Reduced |
| Advisor Group Holdings, Inc. | 5,930 | $540.0K | 0.00% | +2,887+94.9% | Added |
| Utah Retirement Systems | 5,988 | $546.0K | 0.01% | −600−9.1% | Reduced |
| Versor Investments LP | 6,143 | $560.0K | 0.02% | −1,600−20.7% | Reduced |
| Teacher Retirement System of Texas | 6,182 | $563.0K | 0.00% | +1,154+23.0% | Added |
| Handelsbanken Fonder AB | 6,200 | $565.0K | 0.00% | 00.0% | Unchanged |
| Pettee Investors, Inc. | 6,711 | $612.0K | 0.28% | 00.0% | Unchanged |
| Voya Investment Management LLC | 6,721 | $613.0K | 0.00% | −49−0.7% | Reduced |
| Recurrent Investment Advisors LLC | 6,784 | $618.0K | 0.27% | 00.0% | Unchanged |
| Empirical Finance, LLC | 6,810 | $621.0K | 0.09% | +6,810 | New |
| Winton Group Ltd | 7,247 | $660.0K | 0.04% | +1,736+31.5% | Added |
| LPL Financial LLC | 7,255 | $661.0K | 0.00% | +365+5.3% | Added |
| Seven Eight Capital, LP | 7,328 | $668.0K | 0.06% | −1,000−12.0% | Reduced |
| Walleye Trading LLC | 7,382 | $673.0K | 0.02% | +1,883+34.2% | Added |
| Raymond James & Associates | 8,320 | $758.0K | 0.00% | −198−2.3% | Reduced |
| Amalgamated Bank | 8,594 | $783.0K | 0.01% | −332−3.7% | Reduced |
| Gsa Capital Partners LLP | 8,769 | $799.0K | 0.08% | −10,518−54.5% | Reduced |
| Mercer Global Advisors Inc | 8,813 | $803.0K | 0.01% | −5,969−40.4% | Reduced |
| Bowling Portfolio Management LLC | 9,080 | $828.0K | 0.19% | −25−0.3% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 9,139 | $833.0K | 0.00% | +6,139+204.6% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 9,251 | $843.0K | 0.00% | 00.0% | Unchanged |
| Maverick Capital LtdSuperinvestorMaverick Capital | 9,397 | $856.0K | 0.01% | +9,397 | New |
| Susquehanna International Group, LLP | 9,442 | $861.0K | 0.00% | +3,629+62.4% | Added |
| Diversified Trust Co | 9,978 | $909.0K | 0.03% | 00.0% | Unchanged |
| Marshall Wace, LLP | 9,979 | $910.0K | 0.00% | −5,958−37.4% | 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 |
| Bradley Foster & Sargent Inc | 10,116 | $922.0K | 0.02% | −5,252−34.2% | Reduced |
| Occudo Quantitative Strategies LP | 10,167 | $927.0K | 0.11% | +6,451+173.6% | Added |
| Comerica Bank | 10,513 | $946.0K | 0.01% | +4,754+82.5% | Added |
| Arizona State Retirement System | 10,471 | $954.0K | 0.01% | +46+0.4% | Added |
| Golden State Equity Partners | 10,704 | $976.0K | 0.40% | +10,704 | New |
| Raymond James Financial Services Advisors, Inc. | 10,807 | $985.0K | 0.00% | +7,487+225.5% | Added |
| BBVA USA | 11,088 | $1.01M | 0.06% | −929−7.7% | Reduced |
| Treasurer of the State of North Carolina | 11,942 | $1.09M | 0.01% | +409+3.5% | Added |
| Centiva Capital, LP | 12,105 | $1.10M | 0.09% | +944+8.5% | Added |
| Bokf, NA | 12,493 | $1.14M | 0.02% | +12,493 | New |
| Mitsubishi UFJ Trust & Banking Corp | 13,229 | $1.21M | 0.00% | −500−3.6% | Reduced |
| APG Asset Management N.V. | 15,400 | $1.21M | 0.00% | +15,400 | New |
| Capital Fund Management S.A. | 13,551 | $1.24M | 0.03% | −2,107−13.5% | Reduced |
| HSBC Holdings PLC | 14,828 | $1.36M | 0.00% | +1,355+10.1% | Added |
| Susquehanna Fundamental Investments, LLC | 15,990 | $1.46M | 0.03% | −1,935−10.8% | Reduced |
| AlphaCrest Capital Management LLC | 16,023 | $1.46M | 0.08% | −29,537−64.8% | Reduced |
| Agf Investments Inc. | 16,628 | $1.51M | 0.01% | +316+1.9% | Added |
| Two Sigma Advisers, LP | 17,000 | $1.55M | 0.00% | −5,200−23.4% | Reduced |
| PEAK6 Investments LLC | 17,927 | $1.63M | 0.03% | +15,508+641.1% | Added |
| Twin Capital Management Inc | 18,440 | $1.68M | 0.17% | −2,760−13.0% | Reduced |
| BNP Paribas Arbitrage, SA | 19,856 | $1.81M | 0.00% | +16,733+535.8% | Added |
| Gotham Asset Management, LLC | 20,078 | $1.83M | 0.07% | −4,152−17.1% | Reduced |
| Truist Financial Corp | 20,110 | $1.83M | 0.00% | −517−2.5% | Reduced |
| Blueshift Asset Management, LLC | 20,641 | $1.88M | 0.11% | +17,125+487.1% | Added |
| Public Employees Retirement System of Ohio | 20,897 | $1.91M | 0.01% | −355−1.7% | Reduced |
| Parallax Volatility Advisers, L.P. | 22,155 | $2.02M | 0.02% | +22,155 | New |
| Verition Fund Management LLC | 23,645 | $2.15M | 0.03% | +10,376+78.2% | Added |
| Alaska Permanent Fund Corp | 24,000 | $2.19M | 0.04% | 00.0% | Unchanged |
| SeaTown Holdings Pte. Ltd. | 25,000 | $2.28M | 0.10% | +25,000 | New |
| Paradigm Capital Management Inc | 25,100 | $2.29M | 0.12% | 00.0% | Unchanged |
| Man Group plc | 25,578 | $2.33M | 0.01% | −1,400−5.2% | Reduced |
| Advisors Asset Management, Inc. | 28,443 | $2.59M | 0.04% | +1,623+6.1% | Added |
| Royal London Asset Management Ltd | 30,149 | $2.75M | 0.01% | +17,072+130.5% | Added |
| Jane Street Group, LLC | 30,166 | $2.75M | 0.01% | +3,938+15.0% | Added |
| Rhumbline Advisers | 31,505 | $2.87M | 0.00% | −1,123−3.4% | Reduced |
| State of New Jersey Common Pension Fund D | 32,548 | $2.97M | 0.01% | +8,301+34.2% | Added |
| Wellington Management Group LLP | 32,831 | $2.99M | 0.00% | +2,497+8.2% | Added |
| Envestnet Asset Management Inc | 32,909 | $3.00M | 0.00% | +3,010+10.1% | Added |
| Vident Investment Advisory, LLC | 32,908 | $3.00M | 0.09% | +32,908 | New |
| Distillate Capital Partners LLC | 32,908 | $3.00M | 0.80% | +32,908 | New |
| Voloridge Investment Management, LLC | 35,256 | $3.21M | 0.02% | +13,987+65.8% | Added |
| New York State Common Retirement Fund | 36,224 | $3.30M | 0.00% | +5,148+16.6% | Added |
| Holocene Advisors, LP | 36,297 | $3.31M | 0.02% | +36,297 | New |
| Pinebridge Investments, L.P. | 36,430 | $3.32M | 0.04% | +1,515+4.3% | Added |
| Zacks Investment Management | 37,121 | $3.38M | 0.05% | +9,464+34.2% | Added |
| STRS Ohio | 37,171 | $3.39M | 0.01% | −6,060−14.0% | Reduced |
| Amundi | 38,377 | $3.50M | 0.00% | +12,738+49.7% | Added |
| ClariVest Asset Management LLC | 39,700 | $3.62M | 0.12% | −1,900−4.6% | Reduced |
| Jennison Associates LLC | 40,934 | $3.73M | 0.00% | −91,826−69.2% | Reduced |
| State Board of Administration of Florida Retirement System | 41,142 | $3.75M | 0.01% | −1,143−2.7% | Reduced |
| Credit Suisse AG | 41,373 | $3.77M | 0.00% | +2,923+7.6% | Added |
| State of Tennessee, Treasury Department | 42,576 | $3.88M | 0.02% | −13,718−24.4% | Reduced |
| DuPont Capital Management Corp | 42,764 | $3.90M | 0.12% | +10,881+34.1% | Added |
| AXA S.A. | 43,700 | $3.98M | 0.01% | +35,000+402.3% | Added |
| Smith, Graham & Co., Investment Advisors, LP | 43,890 | $4.00M | 0.40% | −4,843−9.9% | Reduced |
| Bank of Nova Scotia | 45,881 | $4.18M | 0.01% | −46,526−50.3% | Reduced |
| Cubist Systematic Strategies, LLC | 48,846 | $4.45M | 0.06% | −82,084−62.7% | Reduced |
| HRT Financial LP | 50,108 | $4.57M | 0.03% | +15,779+46.0% | Added |
| Empowered Funds, LLC | 52,381 | $4.77M | 0.61% | +52,381 | New |
| SEI Investments Co | 53,425 | $4.88M | 0.01% | +13,256+33.0% | Added |
| Walleye Capital LLC | 54,093 | $4.93M | 0.15% | +42,991+387.2% | Added |
| Royal Bank of Canada | 55,443 | $5.05M | 0.00% | +15,932+40.3% | Added |
| UBS Group AG | 56,376 | $5.14M | 0.00% | +42,818+315.8% | Added |
| California State Teachers Retirement System | 60,264 | $5.49M | 0.01% | +3,606+6.4% | Added |
| Bank of Montreal | 62,643 | $5.78M | 0.00% | +31,888+103.7% | Added |