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 2026
Institutional positions in Westlake Corp as of Jun 30, 2026. 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
- 360
- +24 vs. Q1 2026
- Shares held
- 39.7M
- −4.10M (−9.4%) vs. Q1 2026
- Total value
- $2.90B
- −$2.21B (−43.2%) vs. Q1 2026
- New holders
- 88
- 109 more added
- Sold out
- 64
- 119 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,294,162 | $240.5M | 0.00% | +215,075+7.0% | Added |
| Capital World Investors | 2,842,348 | $207.5M | 0.02% | −1,368,658−32.5% | Reduced |
| Price T Rowe Associates Inc | 2,206,676 | $161.1M | 0.02% | −200,781−8.3% | Reduced |
| Orbis Allan Gray Ltd | 2,084,364 | $152.2M | 0.52% | −3,209,155−60.6% | Reduced |
| Dimensional Fund Advisors LP | 2,051,554 | $149.8M | 0.03% | +585,534+39.9% | Added |
| Vanguard Portfolio Management LLC | 1,752,627 | $127.9M | 0.01% | −17,181−1.0% | Reduced |
| Brandes Investment Partners, LP | 1,572,939 | $114.8M | 0.80% | −269,711−14.6% | Reduced |
| AQR Capital Management LLC | 1,570,453 | $114.6M | 0.04% | +1,310,383+503.9% | Added |
| Vanguard Capital Management LLC | 1,464,223 | $106.9M | 0.00% | +8,629+0.6% | Added |
| State Street Corp | 1,453,407 | $106.1M | 0.00% | +72,914+5.3% | Added |
| Goldman Sachs Group Inc | 1,280,873 | $93.5M | 0.01% | −112,454−8.1% | Reduced |
| Citadel Advisors LLC | 1,054,868 | $77.0M | 0.04% | +339,282+47.4% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 1,023,403 | $74.7M | 0.09% | +79,428+8.4% | Added |
| UBS Asset Management Americas Inc | 817,207 | $59.7M | 0.01% | −164,198−16.7% | Reduced |
| Geode Capital Management, LLC | 718,597 | $52.5M | 0.00% | +104,263+17.0% | Added |
| Jacobs Levy Equity Management, Inc | 709,355 | $51.8M | 0.19% | +360,320+103.2% | Added |
| Balyasny Asset Management LLC | 625,859 | $45.7M | 0.08% | +256,187+69.3% | Added |
| Woodline Partners LP | 451,986 | $33.0M | 0.10% | +114,911+34.1% | Added |
| Nuveen, LLC | 446,479 | $32.6M | 0.01% | −118,265−20.9% | Reduced |
| Morgan Stanley | 437,571 | $31.9M | 0.00% | −48,937−10.1% | Reduced |
| UBS Group AG | 431,633 | $31.5M | 0.01% | −379,633−46.8% | Reduced |
| Schroder Investment Management Group | 375,889 | $28.1M | 0.02% | +1,381+0.4% | Added |
| Millennium Management LLC | 366,074 | $26.7M | 0.02% | +281,077+330.7% | Added |
| FMR LLC | 361,243 | $26.4M | 0.00% | −951,230−72.5% | Reduced |
| ExodusPoint Capital Management, LP | 327,195 | $23.9M | 0.22% | +327,195 | New |
| Qube Research & Technologies Ltd | 321,718 | $23.5M | 0.03% | +321,718 | New |
| Charles Schwab Investment Management Inc | 318,823 | $23.3M | 0.00% | +7,061+2.3% | Added |
| Erste Asset Management GmbH | 305,000 | $22.8M | 0.18% | −90,000−22.8% | Reduced |
| Kempen Capital Management N.V. | 268,434 | $19.6M | 0.15% | +24,126+9.9% | Added |
| Jupiter Topco LLC | 267,748 | $19.5M | 0.01% | +267,748 | New |
| Northern Trust Corp | 262,926 | $19.2M | 0.00% | −6,223−2.3% | Reduced |
| Robotti Robert | 235,379 | $17.2M | 2.77% | +90,375+62.3% | Added |
| Bank of America Corp | 232,213 | $17.0M | 0.00% | −4,773−2.0% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 230,396 | $16.8M | 0.27% | +212,024+1,154.1% | Added |
| ProShare Advisors LLC | 228,319 | $16.7M | 0.02% | −67,492−22.8% | Reduced |
| Norges Bank | 214,101 | $15.6M | 0.00% | +214,101 | New |
| Jump Financial, LLC | 209,861 | $15.3M | 0.14% | +209,861 | New |
| Vanguard Fiduciary Trust Co | 209,650 | $15.3M | 0.00% | +3,966+1.9% | Added |
| D. E. Shaw & Co., Inc. | 200,534 | $14.6M | 0.01% | −32,649−14.0% | Reduced |
| Russell Investments Group, Ltd. | 194,362 | $14.2M | 0.01% | +105,000+117.5% | Added |
| Invesco Ltd. | 190,951 | $13.9M | 0.00% | +11,549+6.4% | Added |
| JPMorgan Chase & Co | 163,287 | $12.3M | 0.00% | +65,548+67.1% | Added |
| Cerity Partners LLC | 166,436 | $12.1M | 0.01% | +93,757+129.0% | Added |
| Bank of New York Mellon Corp | 163,455 | $11.9M | 0.00% | −17,615−9.7% | Reduced |
| Allspring Global Investments Holdings, LLC | 163,075 | $11.9M | 0.02% | −122,359−42.9% | Reduced |
| Sprott Inc. | 160,110 | $11.7M | 0.39% | +27,500+20.7% | Added |
| Teachers Retirement System of the State of Kentucky | 156,757 | $11.4M | 0.08% | −21,403−12.0% | Reduced |
| Campbell & CO Investment Adviser LLC | 148,180 | $10.8M | 0.57% | +148,180 | New |
| Wellington Management Group LLP | 141,816 | $10.4M | 0.00% | −1,651,701−92.1% | Reduced |
| Lighthouse Investment Partners, LLC | 135,361 | $9.88M | 0.31% | +135,361 | New |
| Recurrent Investment Advisors LLC | 128,771 | $9.40M | 0.58% | +15,981+14.2% | Added |
| Quantinno Capital Management LP | 123,228 | $9.00M | 0.01% | +1,784+1.5% | Added |
| HRT Financial LP | 116,395 | $8.50M | 0.02% | +116,395 | New |
| Marshall Wace, LLP | 111,574 | $8.14M | 0.01% | +111,574 | New |
| Tudor Investment Corp Et Al | 110,710 | $8.08M | 0.03% | +110,710 | New |
| Wells Fargo & Company | 105,936 | $7.73M | 0.00% | −769−0.7% | Reduced |
| Alliancebernstein L.P. | 65,993 | $7.71M | 0.00% | −1,322−2.0% | Reduced |
| Mackenzie Financial Corp | 104,903 | $7.66M | 0.01% | +32,935+45.8% | Added |
| Royal Bank of Canada | 96,772 | $7.07M | 0.00% | −7,179−6.9% | Reduced |
| Thomist Capital Management, LP | 96,200 | $7.02M | 2.59% | +23,200+31.8% | Added |
| BNP Paribas Arbitrage, SA | 94,400 | $6.89M | 0.00% | +87,710+1,311.1% | Added |
| Point72 Asset Management, L.P. | 89,731 | $6.55M | 0.01% | +89,731 | New |
| Alberta Investment Management Corp | 89,200 | $6.51M | 0.04% | +89,200 | New |
| Rhumbline Advisers | 86,305 | $6.30M | 0.00% | −999−1.1% | Reduced |
| Walleye Capital LLC | 82,847 | $6.05M | 0.03% | +23,033+38.5% | Added |
| Meiji Yasuda Asset Management Co Ltd. | 82,778 | $6.04M | 0.27% | +3,300+4.2% | Added |
| Squarepoint Ops LLC | 79,967 | $5.84M | 0.01% | +41,435+107.5% | Added |
| Natixis | 77,117 | $5.63M | 0.03% | +77,117 | New |
| Toroso Investments, LLC | 76,055 | $5.55M | 0.01% | +28,235+59.0% | Added |
| PDT Partners, LLC | 75,777 | $5.53M | 0.29% | 00.0% | Unchanged |
| Principal Financial Group Inc | 75,653 | $5.52M | 0.00% | +1,172+1.6% | Added |
| Agman Capital LLC | 71,465 | $5.22M | 3.48% | −818−1.1% | Reduced |
| Engineers Gate Manager LP | 71,301 | $5.20M | 0.07% | +28,802+67.8% | Added |
| Swiss National Bank | 64,200 | $4.69M | 0.00% | −11,700−15.4% | Reduced |
| SG Americas Securities, LLC | 59,116 | $4.32M | 0.00% | +34,540+140.5% | Added |
| Turas Capital Management LP | 58,800 | $4.29M | 1.97% | +58,800 | New |
| Assenagon Asset Management S.A. | 55,289 | $4.04M | 0.01% | +55,289 | New |
| Merewether Investment Management, LP | 53,439 | $3.90M | 0.07% | −166,461−75.7% | Reduced |
| Axq Capital, LP | 51,437 | $3.75M | 0.41% | +51,437 | New |
| Legal & General Group Plc | 50,025 | $3.65M | 0.00% | −712−1.4% | Reduced |
| Mariner, LLC | 47,319 | $3.45M | 0.00% | +47,319 | New |
| Two Sigma Investments, LP | 45,357 | $3.31M | 0.00% | +45,357 | New |
| BI Asset Management Fondsmaeglerselskab A/S | 41,791 | $3.05M | 0.02% | −252−0.6% | Reduced |
| New York State Common Retirement Fund | 40,926 | $2.99M | 0.00% | −268,700−86.8% | Reduced |
| Manufacturers Life Insurance Company, The | 37,155 | $2.71M | 0.00% | +3,860+11.6% | Added |
| California State Teachers Retirement System | 36,900 | $2.69M | 0.00% | −7,559−17.0% | Reduced |
| Citigroup Inc | 36,569 | $2.67M | 0.00% | −17,990−33.0% | Reduced |
| State of Wisconsin Investment Board | 35,823 | $2.62M | 0.01% | +10,571+41.9% | Added |
| Occudo Quantitative Strategies LP | 35,695 | $2.61M | 0.14% | −8,735−19.7% | Reduced |
| Bank of Montreal | 35,590 | $2.60M | 0.00% | −3,448−8.8% | Reduced |
| HITE Hedge Asset Management LLC | 34,589 | $2.52M | 0.14% | +34,589 | New |
| Retirement Systems of Alabama | 34,454 | $2.52M | 0.01% | −6,432−15.7% | Reduced |
| Acadian Asset Management LLC | 34,498 | $2.52M | 0.00% | +34,498 | New |
| Los Angeles Capital Management LLC | 32,600 | $2.38M | 0.01% | +32,443+20,664.3% | Added |
| Abn Amro Investment Solutions | 31,597 | $2.31M | 0.02% | +31,597 | New |
| Ameriprise Financial Inc | 31,288 | $2.28M | 0.00% | +2,801+9.8% | Added |
| Worldquant Millennium Advisors LLC | 31,204 | $2.28M | 0.01% | +12,830+69.8% | Added |
| Vanguard Asset Management, Ltd | 30,040 | $2.19M | 0.00% | −3,318−9.9% | Reduced |
| Envestnet Asset Management Inc | 29,586 | $2.16M | 0.00% | +1,540+5.5% | Added |
| First Trust Advisors LP | 27,496 | $2.01M | 0.00% | −74,803−73.1% | Reduced |