Company / Operating Margin
Westlake Corporation Operating Margin History
FY2016-FY2025 · Annual data · Source: SEC filings
At a glance
Latest annual filing availableLatest Operating Margin
-14.1%
FY2025
5-year range
-14.1% / 23.8%
FY2021-FY2025
Trend
-296.0%
vs FY2024
Sector context
#71 of 84
Materials
What the data says
Operating Margin changed -296% YoY in FY2025, a notable deviation from the 9-year average annual change of -5%.
Based on SEC 10-K filings.
-14.1% in FY2025 with a 5-year CAGR of -30.4%.
Declined from 23.8% to -14.1% over the past 2 years.
Materials sector context is included.
Operating Margin over time
Growth rates
- 3-Year Change
- -19.9pp
- 5-Year Change
- -30.4pp
- 10-Year Change
- -
Sector benchmark
Bottom 15% in MaterialsTop 85% of 84This company -14.1% Sector average -70.2%
▼
+79.9% above sector average
Key checks
Key Insights
- In FY2025, operating margin decreased 296.0% year-over-year.
- Currently 56.1pp above the Materials sector average.
- Peak operating margin was recorded in FY2023.
Company context
Key Data Points
- Altman Z-Score 1.14 (distress zone, below 1.8 threshold)
- Negative profit margin: -8.4%
- High earnings quality (cash-backed earnings)
Data sourced from SEC EDGAR filings. Not investment advice.
Annual data
| Year | Operating MarginValue | YoY GrowthYoY |
|---|---|---|
| FY2025 | -14.1% | -296.0% |
| FY2024 | 7.2% | -69.7% |
| FY2023 | 23.8% | +315.6% |
| FY2022 | 5.7% | -29.2% |
| FY2021 | 8.1% | -50.5% |
| FY2020 | 16.3% | +7.1% |
| FY2019 | 15.2% | +32.6% |
| FY2018 | 11.5% | -46.6% |
| FY2017 | 21.5% | +87.2% |
| FY2016 | 11.5% | -98.7% |
As of FY2025 · SEC Form 10-K · Last checked Jun 30, 2026