Westlake Corporation (WLK)
Materials · Integrated chemicals and polymers with downstream building products
Vertically integrated chemicals and building products manufacturer spanning ethylene and chlor-alkali feedstocks through specialty polymers, PVC compounds, epoxy resins, and residential construction products.
What Westlake Corporation does
Westlake Corporation is a vertically integrated global manufacturer of housing and infrastructure products alongside performance and essential materials. The company operates across two segments: Housing and Infrastructure Products (HIP), which includes residential building products, PVC pipe and fittings, and compound materials; and Performance and Essential Materials (PEM), which manufactures vinyls, polyethylene, epoxy, and chlor-alkali products. Westlake is highly integrated along its materials chain, with downstream integration from ethylene and chlor-alkali feedstocks into specialty polymers and finished building products serving residential construction, packaging, automotive, healthcare, water treatment, and industrial markets.
Themes: ["Integrated petrochemicals / materials chain","PVC and vinyl chemistry","Polyethylene production","Residential construction products","Specialty polymer compounds","Infrastructure building products","Industrial packaging materials","Epoxy resins"]
Fundamentals
- Price$75.60 as of 2026-07-09 close
- Market cap$10.0B as of 2026-07-09
- 1-year return-8.8% as of 2026-07-09 close
- Net margin-14.9% as of 2026-07-09
- Gross margin+6.3% as of 2026-07-09
- ROE-17.7% as of 2026-07-09
- Debt / equity0.66 as of 2026-07-09
- Revenue growth (YoY)-8.6% as of 2026-07-09
- Revenue CAGR (3y)-10.9% SEC XBRL
- Beta0.63 as of 2026-07-09
Dividend: yield +1.8%; 5-year non-decreasing per-share dividend streak (SEC XBRL).
Key risks (from latest filing)
["Exposure to volatile petrochemical feedstock costs and energy prices, particularly amid geopolitical disruptions (Middle East conflict affecting naphtha-based producers and global shipping); the company's North American focus limits but does not eliminate exposure","Antitrust and legal liabilities—the company has agreed to pay $67 million to settle PVC pipe antitrust claims, with ongoing class action exposure in the sector","Significant financial stress from unprofitability (net margin -14.91%) and declining revenue (-8.63% YoY), limiting cash flow and capital flexibility as the company pursues acquisitions and manages substantial debt"]
Competitors & peers
- Axiall (acquired by Westlake in 2016)
- Shin-Etsu Chemical
- LyondellBasell Industries
- Eastman Chemical Company
- Formosa Plastics
- Huntsman International
- Martin Marietta Materials
Fundamentals: Finnhub, as of 2026-07-09. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-07-09.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & Finnhub, shown with their as-of date.