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 |
|---|---|---|---|---|---|
| Brown Brothers Harriman & Co | 55 | $4.01K | 0.00% | 00.0% | Unchanged |
| Sachetta, LLC | 55 | $4.01K | 0.00% | +1+1.9% | Added |
| Rakuten Securities, Inc. | 51 | $3.72K | 0.00% | −13−20.3% | Reduced |
| Trust Co of Vermont | 50 | $3.65K | 0.00% | +50 | New |
| TD Waterhouse Canada Inc. | 49 | $3.57K | 0.00% | −1,326−96.4% | Reduced |
| Action Point Financial Planning, LLC | 45 | $3.14K | 0.00% | +45 | New |
| Fortitude Family Office, LLC | 42 | $3.07K | 0.00% | −10−19.2% | Reduced |
| Global Retirement Partners, LLC | 42 | $3.07K | 0.00% | +42 | New |
| CVA Family Office, LLC | 41 | $2.99K | 0.00% | −43−51.2% | Reduced |
| Larson Financial Group LLC | 41 | $2.99K | 0.00% | −16−28.1% | Reduced |
| Basecamp Wealth Advisors LLC | 40 | $2.92K | 0.00% | −5−11.1% | Reduced |
| Assetmark, Inc | 39 | $2.85K | 0.00% | −5−11.4% | Reduced |
| Transce3nd, LLC | 33 | $2.49K | 0.02% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 32 | $2.34K | 0.00% | 00.0% | Unchanged |
| Bruce G. Allen Investments, LLC | 31 | $2.26K | 0.00% | 00.0% | Unchanged |
| Farmers & Merchants Investments Inc | 30 | $2.19K | 0.00% | 00.0% | Unchanged |
| GoalVest Advisory LLC | 26 | $1.90K | 0.00% | +26 | New |
| Creative Capital Management Investments LLC | 25 | $1.82K | 0.00% | +25 | New |
| CoreCap Advisors, LLC | 24 | $1.75K | 0.00% | 00.0% | Unchanged |
| Peterson Wealth Services | 23 | $1.68K | 0.00% | 00.0% | Unchanged |
| JFS Wealth Advisors, LLC | 21 | $1.53K | 0.00% | −9−30.0% | Reduced |
| Manchester Capital Management LLC | 21 | $1.53K | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 21 | $1.53K | 0.00% | +2+10.5% | Added |
| Purpose Unlimited Inc. | 19 | $1.39K | 0.00% | −15−44.1% | Reduced |
| Wilkerson Advisory Group LLC | 14 | $1.02K | 0.00% | −2−12.5% | Reduced |
| Ogorek Anthony Joseph | 18 | $1.00K | 0.00% | 00.0% | Unchanged |
| Avion Wealth | 14 | $1.00K | 0.00% | 00.0% | Unchanged |
| Torren Management, LLC | 13 | $984 | 0.00% | 00.0% | Unchanged |
| Planning Strategies Inc. | 12 | $876 | 0.00% | +12 | New |
| First Horizon Corp | 11 | $803 | 0.00% | −13−54.2% | Reduced |
| Bay Harbor Wealth Management, LLC | 11 | $803 | 0.00% | −1−8.3% | Reduced |
| Raffa Wealth Management, LLC | 11 | $803 | 0.00% | +1+10.0% | Added |
| DiNuzzo Private Wealth, Inc. | 10 | $730 | 0.00% | +1+11.1% | Added |
| Owl Creek Wealth Partners LLC | 10 | $730 | 0.00% | +10 | New |
| Creative Financial Designs Inc | 9 | $657 | 0.00% | 00.0% | Unchanged |
| South State Corp. | 8 | $584 | 0.00% | −10−55.6% | Reduced |
| Rialto Wealth Management, LLC | 8 | $584 | 0.00% | −4−33.3% | Reduced |
| Principia Wealth Advisory, LLC | 8 | $584 | 0.00% | 00.0% | Unchanged |
| American Capital Advisory, LLC | 7 | $511 | 0.00% | 00.0% | Unchanged |
| HFM Investment Advisors, LLC | 7 | $511 | 0.00% | +1+16.7% | Added |
| Bell Investment Advisors, Inc | 7 | $511 | 0.00% | +7 | New |
| Financial Consulate, Inc | 6 | $438 | 0.00% | +6 | New |
| MV Capital Management, Inc. | 5 | $365 | 0.00% | −1−16.7% | Reduced |
| SWAN Capital LLC | 5 | $365 | 0.00% | 00.0% | Unchanged |
| Keating Financial Advisory Services, Inc. | 4 | $292 | 0.00% | −26−86.7% | Reduced |
| Cromwell Holdings LLC | 4 | $292 | 0.00% | 00.0% | Unchanged |
| Arlington Trust Co LLC | 4 | $292 | 0.00% | 00.0% | Unchanged |
| LRI Investments, LLC | 4 | $292 | 0.00% | +4 | New |
| Dunhill Financial, LLC | 3 | $271 | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 3 | $219 | 0.00% | +1+50.0% | Added |
| Maryland Capital Advisors Inc. | 3 | $219 | 0.00% | +3 | New |
| Rossby Financial, LCC | 3 | $219 | 0.00% | +3 | New |
| DecisionPoint Financial, LLC | 2 | $146 | 0.00% | +2 | New |
| Valued Wealth Advisors LLC | 1 | $76 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 1 | $73 | 0.00% | −1−50.0% | Reduced |
| 3 Factor Indexing, LLC | 1 | $73 | 0.00% | 00.0% | Unchanged |
| Abound Wealth Management | 1 | $73 | 0.00% | +1 | New |
| Penserra Capital Management LLC | 9 | $0 | 0.00% | 00.0% | Unchanged |
| Evolution Advisers, Inc. | 3 | $0 | 0.00% | +3 | New |
| Navigoe, LLC | 5 | $0 | 0.00% | +5 | New |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −730,035−100.0% | Sold out |
| Deprince Race & Zollo Inc | 0 | $0 | 0.00% | −203,366−100.0% | Sold out |
| Ceredex Value Advisors LLC | 0 | $0 | 0.00% | −177,900−100.0% | Sold out |
| Yaupon Capital Management LP | 0 | $0 | 0.00% | −107,044−100.0% | Sold out |
| Lloyd Harbor Capital Management, LLC | 0 | $0 | 0.00% | −62,000−100.0% | Sold out |
| Rokos Capital Management LLP | 0 | $0 | 0.00% | −60,800−100.0% | Sold out |
| Albar Capital Partners LLP | 0 | $0 | 0.00% | −48,814−100.0% | Sold out |
| BCJ Capital Management, LLC | 0 | $0 | 0.00% | −45,296−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −35,977−100.0% | Sold out |
| Boston Partners | 0 | $0 | 0.00% | −31,696−100.0% | Sold out |
| Occam Crest Management LP | 0 | $0 | 0.00% | −29,256−100.0% | Sold out |
| California Public Employees Retirement System | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| AMG National Trust Bank | 0 | $0 | 0.00% | −23,041−100.0% | Sold out |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 0 | $0 | 0.00% | −21,194−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −17,681−100.0% | Sold out |
| Nomura Asset Management International Inc. | 0 | $0 | 0.00% | −13,868−100.0% | Sold out |
| Walnut Level Capital LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 0 | $0 | 0.00% | −8,356−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −8,229−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −9,428−100.0% | Sold out |
| Capital Group Investment Management Pte. Ltd. | 0 | $0 | 0.00% | −7,693−100.0% | Sold out |
| Gateway Investment Advisers LLC | 0 | $0 | 0.00% | −7,147−100.0% | Sold out |
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −6,517−100.0% | Sold out |
| CAPROCK Group, Inc. | 0 | $0 | 0.00% | −5,171−100.0% | Sold out |
| Thompson Siegel & Walmsley LLC | 0 | $0 | 0.00% | −2,976−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −2,950−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −2,931−100.0% | Sold out |
| ISAM Funds (UK) Ltd | 0 | $0 | 0.00% | −2,835−100.0% | Sold out |
| Archer Investment Corp | 0 | $0 | 0.00% | −2,493−100.0% | Sold out |
| Voya Investment Management LLC | 0 | $0 | 0.00% | −2,436−100.0% | Sold out |
| McMahon Financial Advisors, LLC | 0 | $0 | 0.00% | −2,382−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −2,305−100.0% | Sold out |
| Swiss Life Asset Management Ltd | 0 | $0 | 0.00% | −2,253−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −2,228−100.0% | Sold out |
| Empowered Funds, LLC | 0 | $0 | 0.00% | −2,162−100.0% | Sold out |
| Sivia Capital Partners, LLC | 0 | $0 | 0.00% | −2,099−100.0% | Sold out |
| Eagle Global Advisors LLC | 0 | $0 | 0.00% | −2,066−100.0% | Sold out |
| Callan Family Office, LLC | 0 | $0 | 0.00% | −2,017−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −1,997−100.0% | Sold out |
| Cercano Management LLC | 0 | $0 | 0.00% | −1,978−100.0% | Sold out |