Westlake Chemical Corporation
Statements
Segments
US companies must disclose in their mandatory reports how revenue breaks down across business segments, regions and product lines. We read that breakdown for you straight from the annual and quarterly reports (10-K and 10-Q) of Westlake Chemical Corporation (WLK). It shows which part of the business is growing — and which one is holding it back.
Revenue by business segment
| Segment | Q1 2025 | Q2 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|
| Performance and Essential Materials Segment | $1.85B 65.0% | $1.79B 60.7% | $1.66B 62.6% | $2.02B 61.7% |
| Housing and Infrastructure Products Segment | $1.00B 35.0% | $1.16B 39.3% | $993.0M 37.4% | $1.25B 38.3% |
Large figure: segment revenue. Below it the share of revenue in that period and the change against the prior year.
| Segment | Q1 2025 | Q2 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|
| Performance and Essential Materials Segment | -$163.0M -8.8% | -$318.0M -17.7% | -$211.0M -12.7% | $185.0M 9.2% |
| Housing and Infrastructure Products Segment | $148.0M 14.9% | $222.0M 19.1% | $56.0M 5.6% | $212.0M 16.9% |
Large figure: segment operating income. Below it the margin, that is operating income measured against the revenue of the same segment.
Segment and region names are the ones the company itself uses and are shown as reported. Change and share refer to revenue.
Data as of: August 11, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q) · Segment figures: SEC EDGAR (10-K/10-Q reports)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.