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, Q4 2025
Institutional positions in Westlake Corp as of Dec 31, 2025. 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
- 298
- −1 vs. Q3 2025
- Shares held
- 46.4M
- +4.91M (+11.8%) vs. Q3 2025
- Total value
- $3.43B
- +$234.7M (+7.3%) vs. Q3 2025
- New holders
- 63
- 93 more added
- Sold out
- 64
- 112 more reduced
6 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: 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, Q4 2025
Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wexford Capital LP | 1,344 | $99.4K | 0.03% | +1,344 | New |
| The PNC Financial Services Group, Inc. | 1,335 | $98.7K | 0.00% | −209−13.5% | Reduced |
| MAI Capital Management | 1,316 | $97.3K | 0.00% | +6+0.5% | Added |
| Kestra Advisory Services, LLC | 1,138 | $84.2K | 0.00% | +1,138 | New |
| Deutsche Bank AG | 1,084 | $80.2K | 0.00% | +1,084 | New |
| Rockefeller Capital Management L.P. | 955 | $70.6K | 0.00% | +656+219.4% | Added |
| Nomura Asset Management Co Ltd | 896 | $66.3K | 0.00% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 820 | $60.6K | 0.03% | +820 | New |
| Transamerica Financial Advisors, Inc. | 805 | $59.5K | 0.00% | +219+37.4% | Added |
| STRS Ohio | 800 | $59.2K | 0.00% | +1+0.1% | Added |
| Tower Research Capital LLC (TRC) | 764 | $56.5K | 0.00% | −768−50.1% | Reduced |
| GWM Advisors LLC | 745 | $55.1K | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 562 | $41.6K | 0.00% | +234+71.3% | Added |
| GAMMA Investing LLC | 464 | $34.3K | 0.00% | +23+5.2% | Added |
| Quadrant Capital Group LLC | 447 | $33.1K | 0.00% | −7,444−94.3% | Reduced |
| Quarry LP | 426 | $31.5K | 0.01% | +426 | New |
| Umb Bank N A | 393 | $29.1K | 0.00% | −185−32.0% | Reduced |
| Parallel Advisors, LLC | 355 | $26.2K | 0.00% | −423−54.4% | Reduced |
| CWM, LLC | 346 | $26.0K | 0.00% | −337−49.3% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 338 | $25.0K | 0.00% | +338 | New |
| Jones Financial Companies LLLP | 306 | $22.6K | 0.00% | −100−24.6% | Reduced |
| Spire Wealth Management | 306 | $22.6K | 0.00% | +34+12.5% | Added |
| Farther Finance Advisors, LLC | 300 | $22.2K | 0.00% | −203−40.4% | Reduced |
| DV Trading LLC | 300 | $22.2K | 0.00% | +300 | New |
| Advisor Group Holdings, Inc. | 280 | $20.7K | 0.00% | −2,978−91.4% | Reduced |
| National Bank of Canada | 275 | $20.3K | 0.00% | −12−4.2% | Reduced |
| Massmutual Trust Co FSB | 274 | $20.3K | 0.00% | +43+18.6% | Added |
| Parkside Financial Bank & Trust | 268 | $19.8K | 0.00% | +221+470.2% | Added |
| Quent Capital, LLC | 232 | $17.2K | 0.00% | +29+14.3% | Added |
| NBC Securities, Inc. | 204 | $15.1K | 0.00% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 191 | $14.1K | 0.00% | −495−72.2% | Reduced |
| Ronald Blue Trust, Inc. | 186 | $13.8K | 0.00% | +171+1,140.0% | Added |
| EverSource Wealth Advisors, LLC | 170 | $12.6K | 0.00% | −27−13.7% | Reduced |
| Cullen/Frost Bankers, Inc. | 164 | $12.1K | 0.00% | +31+23.3% | Added |
| Los Angeles Capital Management LLC | 157 | $10.7K | 0.00% | +157 | New |
| Signaturefd, LLC | 142 | $10.5K | 0.00% | −312−68.7% | Reduced |
| Deseret Mutual Benefit Administrators | 133 | $9.83K | 0.00% | +71+114.5% | Added |
| Huntington National Bank | 119 | $8.80K | 0.00% | −231−66.0% | Reduced |
| Clearstead Advisors, LLC | 109 | $8.06K | 0.00% | +84+336.0% | Added |
| Smartleaf Asset Management LLC | 101 | $7.56K | 0.00% | −19−15.8% | Reduced |
| Ancora Advisors, LLC | 97 | $7.17K | 0.00% | +97 | New |
| Private Trust Co NA | 90 | $6.66K | 0.00% | 00.0% | Unchanged |
| Transce3nd, LLC | 71 | $5.80K | 0.05% | 00.0% | Unchanged |
| Pinnacle Bancorp, Inc. | 58 | $4.29K | 0.00% | +15+34.9% | Added |
| Pinnacle Wealth Planning Services, Inc. | 58 | $4.29K | 0.00% | +58 | New |
| Sachetta, LLC | 54 | $3.99K | 0.00% | +28+107.7% | Added |
| First Eagle Investment Management, LLC | 53 | $3.92K | 0.00% | +53 | New |
| Nisa Investment Advisors, LLC | 50 | $3.70K | 0.00% | −282−84.9% | Reduced |
| Trust Co of Vermont | 50 | $3.70K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 40 | $2.96K | 0.00% | −247−86.1% | Reduced |
| TD Waterhouse Canada Inc. | 40 | $2.96K | 0.00% | −10−20.0% | Reduced |
| SageView Advisory Group, LLC | 40 | $2.96K | 0.00% | +40 | New |
| Basecamp Wealth Advisors LLC | 40 | $2.96K | 0.00% | +40 | New |
| Assetmark, Inc | 39 | $2.88K | 0.00% | −55−58.5% | Reduced |
| Harbour Investments, Inc. | 37 | $2.74K | 0.00% | +30+428.6% | Added |
| Private Wealth Management Group, LLC | 36 | $2.66K | 0.00% | −127−77.9% | Reduced |
| Torren Management, LLC | 34 | $2.50K | 0.00% | +34 | New |
| Bruce G. Allen Investments, LLC | 31 | $2.29K | 0.00% | −8−20.5% | Reduced |
| Farmers & Merchants Investments Inc | 30 | $2.22K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 24 | $1.77K | 0.00% | −37−60.7% | Reduced |
| Root Financial Partners, LLC | 24 | $1.77K | 0.00% | −13−35.1% | Reduced |
| CoreCap Advisors, LLC | 24 | $1.77K | 0.00% | +19+380.0% | Added |
| First Horizon Corp | 24 | $1.77K | 0.00% | −24−50.0% | Reduced |
| Larson Financial Group LLC | 23 | $1.70K | 0.00% | 00.0% | Unchanged |
| Peterson Wealth Services | 23 | $1.70K | 0.00% | −1,812−98.7% | Reduced |
| Global Wealth Strategies & Associates | 23 | $1.70K | 0.00% | +23 | New |
| Manchester Capital Management LLC | 21 | $1.55K | 0.00% | −63−75.0% | Reduced |
| Global Retirement Partners, LLC | 21 | $1.55K | 0.00% | +4+23.5% | Added |
| Brown Brothers Harriman & Co | 21 | $1.55K | 0.00% | +21 | New |
| SRS Capital Advisors, Inc. | 20 | $1.48K | 0.00% | −6,963−99.7% | Reduced |
| AdvisorNet Financial, Inc | 19 | $1.41K | 0.00% | +19 | New |
| Versant Capital Management, Inc | 18 | $1.33K | 0.00% | −104−85.2% | Reduced |
| True Wealth Design, LLC | 18 | $1.33K | 0.00% | +14+350.0% | Added |
| Rothschild Investment LLC | 15 | $1.11K | 0.00% | −2−11.8% | Reduced |
| JFS Wealth Advisors, LLC | 14 | $1.04K | 0.00% | +14 | New |
| Ogorek Anthony Joseph | 18 | $1.00K | 0.00% | 00.0% | Unchanged |
| Avion Wealth | 14 | $1.00K | 0.00% | −3−17.6% | Reduced |
| Fortitude Family Office, LLC | 10 | $739 | 0.00% | −4−28.6% | Reduced |
| Raffa Wealth Management, LLC | 9 | $665 | 0.00% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 8 | $592 | 0.00% | 00.0% | Unchanged |
| South State Corp. | 8 | $592 | 0.00% | −3−27.3% | Reduced |
| Principia Wealth Advisory, LLC | 8 | $592 | 0.00% | 00.0% | Unchanged |
| American Capital Advisory, LLC | 7 | $518 | 0.00% | +7 | New |
| Rialto Wealth Management, LLC | 7 | $518 | 0.00% | +7 | New |
| Rakuten Securities, Inc. | 6 | $444 | 0.00% | +5+500.0% | Added |
| MV Capital Management, Inc. | 5 | $370 | 0.00% | −36−87.8% | Reduced |
| SWAN Capital LLC | 5 | $370 | 0.00% | 00.0% | Unchanged |
| Cromwell Holdings LLC | 4 | $296 | 0.00% | +2+100.0% | Added |
| Optima Capital LLC | 3 | $222 | 0.00% | +3 | New |
| DiNuzzo Private Wealth, Inc. | 2 | $148 | 0.00% | −2−50.0% | Reduced |
| Bay Harbor Wealth Management, LLC | 2 | $147 | 0.00% | +1+100.0% | Added |
| Valued Wealth Advisors LLC | 1 | $76 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 1 | $74 | 0.00% | 00.0% | Unchanged |
| HFM Investment Advisors, LLC | 1 | $74 | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 1 | $74 | 0.00% | +1 | New |
| Keating Financial Advisory Services, Inc. | 1 | $74 | 0.00% | +1 | New |
| Dunhill Financial, LLC | 1 | $53 | 0.00% | +1 | New |
| Penserra Capital Management LLC | 9 | $0 | 0.00% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −475,743−100.0% | Sold out |
| Caisse de Depot Et Placement du Quebec | 0 | $0 | 0.00% | −368,318−100.0% | Sold out |