Friday 6 November 2026
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Westlake Corporation
WLK Basic Materials Specialty Chemicals
Westlake Corporation’s revenue for fiscal 2025 (year ended December 2025) was $11.2 billion, down 8.01% from fiscal 2024.
- Revenue
- +5.04%
- EPS
- +102.3%
- Free cash flow
- +486.0%
- Total debt
- +8.76%
Quarter to September 2026, against a year earlier
66.38
1.52
−2.24%
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Westlake Corporation (WLK) revenue by segment, product and region
Where the money comes from and where it goes
| Performance and Essential Materials Segment | 7,825 | 64.45% |
|---|---|---|
| Housing and Infrastructure Products Segment | 4,317 | 35.55% |
| Gross margin | 16.12% | |
| Operating margin | 7.21% | |
| Pre-tax margin | 7.73% |
Revenue by segment $m
| Line | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | FY2020 | FY2019 | FY2018 | FY2017 | FY2016 | FY2015 | FY2014 | FY2013 | FY2012 | FY2011 | FY2010 | FY2009 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Performance and Essential Materials Segment | 7,022 62.86% | 7,825 64.45% | 8,336 66.43% | 11,008 69.70% | 8,670 73.61% | 5,465 72.83% | 6,184 76.18% | 2,019 23.38% | 2,051 25.51% | 1,894 37.31% | 2,260 50.64% | 147 99.06% | 321 99.53% | 318 99.50% | 445 99.67% | 2,261 71.29% | 1,611 69.29% |
| Housing and Infrastructure Products Segment | 4,148 37.14% | 4,317 35.55% | 4,212 33.57% | 4,786 30.30% | 3,108 26.39% | 2,039 27.17% | 1,934 23.82% | 6,616 76.62% | 5,990 74.49% | 3,182 62.69% | 2,203 49.36% | 1 0.94% | 2 0.47% | 2 0.50% | 1 0.33% | 911 28.71% | 714 30.71% |
| Revenue | 11,170 | 12,142 | 12,548 | 15,794 | 11,778 | 7,504 | 8,118 | 8,635 | 8,041 | 5,076 | 4,463 | 148 | 322 | 320 | 446 | 3,172 | 2,326 |
Operating income by segment $m, and margin
Revenue by region $m
| Line | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | FY2020 | FY2019 | FY2018 | FY2017 | FY2016 | FY2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| United States | 7,954 71.21% | 8,751 72.07% | 8,955 71.37% | 10,899 69.01% | 8,157 69.26% | 5,100 67.96% | 5,530 68.12% | 6,114 70.80% | 5,739 71.37% | 3,526 69.46% | 3,133 70.20% |
| Other | 1,078 9.65% | 1,197 9.86% | 1,258 10.03% | 1,754 11.11% | 1,226 10.41% | 995 13.26% | 1,159 14.28% | 1,010 11.70% | 921 11.45% | 635 12.51% | 481 10.78% |
| Canada | 777 6.96% | 792 6.52% | 808 6.44% | 1,051 6.65% | 980 8.32% | 601 8.01% | 573 7.06% | 649 7.52% | 653 8.12% | 317 6.25% | 196 4.39% |
| Germany | 583 5.22% | 594 4.89% | 602 4.80% | 875 5.54% | 628 5.33% | 458 6.10% | 478 5.89% | 500 5.79% | 432 5.37% | 402 7.92% | 394 8.83% |
| Mexico | 194 1.74% | 206 1.70% | 217 1.73% | 228 1.44% | 149 1.27% | — | — | — | — | — | — |
| China | 162 1.45% | 195 1.61% | 220 1.75% | 262 1.66% | 216 1.83% | 173 2.31% | 175 2.16% | 155 1.80% | 104 1.29% | 87 1.71% | 46 1.03% |
| Brazil | 153 1.37% | 142 1.17% | 215 1.71% | 353 2.24% | 141 1.20% | — | — | — | — | — | 16 0.36% |
| Italy | 144 1.29% | 145 1.19% | 135 1.08% | 200 1.27% | 181 1.54% | 103 1.37% | 119 1.47% | 105 1.22% | 96 1.19% | 84 1.65% | 90 2.02% |
| France | 125 1.12% | 120 0.99% | 138 1.10% | 172 1.09% | 100 0.85% | — | — | — | — | — | — |
| Taiwan | — | — | — | — | — | 74 0.99% | 84 1.03% | 102 1.18% | 96 1.19% | 25 0.49% | 0 0.00% |
| Switzerland | — | — | — | — | — | — | — | — | — | — | 107 2.40% |
| Revenue | 11,170 | 12,142 | 12,548 | 15,794 | 11,778 | 7,504 | 8,118 | 8,635 | 8,041 | 5,076 | 4,463 |
Operating figures as reported in each quarter’s results release or filing
| Figure | Quarter | Latest | A year before | Change |
|---|---|---|---|---|
| Company average sales price change quarter over quarter | Q3 FY2026 | −4.00% | −2.00% | — |
| Company average sales price change year over year | Q3 FY2026 | 6.00% | −5.00% | — |
| Company volume change quarter over quarter | Q3 FY2026 | −5.00% | −1.00% | — |
| Company volume change quarter over quarter excluding plant closures and acquisition | Q3 FY2026 | −7.00% | — | — |
| Company volume change year over year | Q3 FY2026 | −1.00% | −4.00% | — |
| Housing and Infrastructure Products average sales price change quarter over quarter | Q3 FY2026 | 4.00% | — | — |
| Housing and Infrastructure Products average sales price change year over year | Q3 FY2026 | 1.00% | −1.00% | — |
| Housing and Infrastructure Products volume change quarter over quarter | Q3 FY2026 | −17.0% | −6.00% | — |
| Housing and Infrastructure Products volume change quarter over quarter excluding plant closures and acquisition | Q3 FY2026 | −17.0% | — | — |
| Housing and Infrastructure Products volume change year over year | Q3 FY2026 | −2.00% | — | — |
| Housing and Infrastructure Products volume change year over year excluding plant closures and acquisition | Q3 FY2026 | −6.00% | — | — |
| Performance and Essential Materials average sales price change quarter over quarter | Q3 FY2026 | −8.00% | −4.00% | — |
| Performance and Essential Materials average sales price change year over year | Q3 FY2026 | 9.00% | −7.00% | — |
| Performance and Essential Materials volume change quarter over quarter | Q3 FY2026 | 2.00% | 1.00% | — |
| Performance and Essential Materials volume change year over year | Q3 FY2026 | −1.00% | −6.00% | — |