Westlake annual operating margin
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Westlake Operating Margin Growth & History (WLK)
Westlake's operating margin was −14.13% for fiscal 2025.
View full Westlake company overviewWestlake annual operating margin history
| Fiscal year | Period ended | Operating margin | Change (percentage points) |
|---|---|---|---|
| 2025 | 2025-12-31 | −14.13% | −21.33 pp |
| 2024 | 2024-12-31 | 7.21% | +1.40 pp |
| 2023 | 2023-12-31 | 5.81% | −13.50 pp |
| 2022 | 2022-12-31 | 19.31% | −4.46 pp |
| 2021 | 2021-12-31 | 23.77% | +18.06 pp |
| 2020 | 2020-12-31 | 5.72% | −2.36 pp |
| 2019 | 2019-12-31 | 8.08% | −8.22 pp |
| 2018 | 2018-12-31 | 16.31% | +1.07 pp |
| 2017 | 2017-12-31 | 15.23% | +3.75 pp |
| 2016 | 2016-12-31 | 11.49% | −874.50 pp |
| 2015 | 2015-12-31 | 885.98% | +126.14 pp |
| 2014 | 2014-12-31 | 759.84% | +464.11 pp |
| 2013 | 2013-12-31 | 295.73% | +103.39 pp |
| 2012 | 2012-12-31 | 192.34% | +92.25 pp |
| 2011 | 2011-12-31 | 100.10% | +88.17 pp |
| 2010 | 2010-12-31 | 11.93% | +7.32 pp |
| 2009 | 2009-12-31 | 4.61% | — |
Westlake quarterly operating margin
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Q2.26
| Fiscal quarter | Period ended | Operating margin | Change (percentage points) |
|---|---|---|---|
| Q2 2026 | 2026-06-30 | 11.13% | +14.82 pp |
| Q1 2026 | 2026-03-31 | −6.49% | −5.36 pp |
| Q4 2025 | 2025-12-31 | −26.49% | −28.81 pp |
| Q3 2025 | 2025-09-30 | −26.99% | −32.77 pp |
| Q2 2025 | 2025-06-30 | −3.69% | −16.35 pp |
| Q1 2025 | 2025-03-31 | −1.12% | −8.62 pp |
| Q4 2024 | 2024-12-31 | 2.32% | +21.85 pp |
| Q3 2024 | 2024-09-30 | 5.77% | −5.43 pp |
| Q2 2024 | 2024-06-30 | 12.66% | +0.48 pp |
| Q1 2024 | 2024-03-31 | 7.50% | −8.48 pp |
| Q4 2023 | 2023-12-31 | −19.53% | −29.45 pp |
| Q3 2023 | 2023-09-30 | 11.20% | −1.84 pp |
| Q2 2023 | 2023-06-30 | 12.18% | −14.03 pp |
| Q1 2023 | 2023-03-31 | 15.97% | −9.47 pp |
| Q4 2022 | 2022-12-31 | 9.91% | −14.98 pp |
| Q3 2022 | 2022-09-30 | 13.04% | −15.14 pp |
| Q2 2022 | 2022-06-30 | 26.21% | +1.03 pp |
| Q1 2022 | 2022-03-31 | 25.44% | +10.76 pp |
| Q4 2021 | 2021-12-31 | 24.89% | +15.83 pp |
| Q3 2021 | 2021-09-30 | 28.18% | +24.02 pp |
| Q2 2021 | 2021-06-30 | 25.18% | +23.08 pp |
| Q1 2021 | 2021-03-31 | 14.68% | +7.64 pp |
| Q4 2020 | 2020-12-31 | 9.06% | +3.64 pp |
| Q3 2020 | 2020-09-30 | 4.16% | −6.78 pp |
| Q2 2020 | 2020-06-30 | 2.11% | −6.94 pp |
| Q1 2020 | 2020-03-31 | 7.04% | +0.42 pp |
| Q4 2019 | 2019-12-31 | 5.42% | −4.96 pp |
| Q3 2019 | 2019-09-30 | 10.94% | −6.62 pp |
| Q2 2019 | 2019-06-30 | 9.05% | −9.03 pp |
| Q1 2019 | 2019-03-31 | 6.62% | −12.03 pp |
| Q4 2018 | 2018-12-31 | 10.38% | −7.68 pp |
| Q3 2018 | 2018-09-30 | 17.56% | +0.30 pp |
| Q2 2018 | 2018-06-30 | 18.08% | +4.74 pp |
| Q1 2018 | 2018-03-31 | 18.65% | +6.61 pp |
| Q4 2017 | 2017-12-31 | 18.06% | +9.17 pp |
| Q3 2017 | 2017-09-30 | 17.26% | +13.62 pp |
| Q2 2017 | 2017-06-30 | 13.34% | −3.23 pp |
| Q1 2017 | 2017-03-31 | 12.04% | −8.70 pp |
| Q4 2016 | 2016-12-31 | 8.89% | −12.50 pp |
| Q3 2016 | 2016-09-30 | 3.64% | −21.29 pp |
| Q2 2016 | 2016-06-30 | 16.57% | −4.21 pp |
| Q1 2016 | 2016-03-31 | 20.74% | −3.74 pp |
| Q3 2015 | 2015-09-30 | 21.38% | −5.33 pp |
| Q2 2015 | 2015-06-30 | 24.93% | +0.79 pp |
| Q1 2015 | 2015-03-31 | 20.78% | −5.77 pp |
| Q3 2014 | 2014-09-30 | 24.48% | −0.57 pp |
| Q2 2014 | 2014-06-30 | 26.72% | +4.27 pp |
| Q1 2014 | 2014-03-31 | 24.14% | +6.78 pp |
| Q3 2013 | 2013-09-30 | 26.55% | +7.84 pp |
| Q2 2013 | 2013-06-30 | 25.05% | +10.98 pp |
| Q1 2013 | 2013-03-31 | 22.44% | +10.33 pp |
| Q3 2012 | 2012-09-30 | 17.36% | +2.40 pp |
| Q2 2012 | 2012-06-30 | 18.71% | +2.49 pp |
| Q1 2012 | 2012-03-31 | 14.07% | +0.30 pp |
| Q3 2011 | 2011-09-30 | 12.12% | −0.05 pp |
| Q2 2011 | 2011-06-30 | 14.96% | — |
| Q1 2011 | 2011-03-31 | 16.22% | — |
| Q3 2010 | 2010-09-30 | 13.77% | — |
| Q2 2010 | 2010-06-30 | 12.16% | — |
Westlake operating margin trends
Over the last five reported fiscal years, Westlake's operating margin decreased from 5.72% to −14.13%, a change of −19.84 percentage points. The latest reported quarter, Q2 2026, shows 11.13%.
About the metric
What operating margin means
Operating margin measures the percentage of revenue left after operating costs and expenses. It shows how much operating profit a company generates from each dollar of revenue.
Calculation and source
How operating margin is calculated
TickerStat calculates operating margin as SEC-reported operating income divided by SEC-reported revenue for the same fiscal period. Changes are shown in percentage points. Fiscal periods can differ from calendar years, so exact period-end dates are included.
Review Westlake filings at SEC.gov ↗