Company / Operating Margin
Westlake Chemical Partners LP Operating Margin History
FY2016-FY2025 · Annual data · Source: SEC filings
At a glance
Latest annual filing availableLatest Operating Margin
27.4%
FY2025
5-year range
27.4% / 36.5%
FY2021-FY2025
Trend
-20.3%
vs FY2024
Sector context
#9 of 84
Materials
What the data says
Westlake Chemical Partners LP's operating margin of 27.4% is higher than 89% of companies in the Materials sector (FY2025). Operating Margin has fluctuated over the past 10 years, ranging from 27.2% in FY2020 to 37.1% in FY2018.
Based on SEC 10-K filings.
27.4% in FY2025 with a 5-year CAGR of +0.2%. Top quartile in the Materials sector.
Declined from 33.8% to 27.4% over the past 2 years.
Materials sector context is included.
Operating Margin over time
Growth rates
- 3-Year Change
- -9.1pp
- 5-Year Change
- +0.2pp
- 10-Year Change
- -
Sector benchmark
+139.0% above sector average
Key checks
Key Insights
- In FY2025, operating margin decreased 20.3% year-over-year.
- Currently 97.6pp above the Materials sector average.
- Peak operating margin was recorded in FY2018.
- Lowest operating margin in the period was in FY2020.
Company context
Key Data Points
- High earnings quality (cash-backed earnings)
Data sourced from SEC EDGAR filings. Not investment advice.
Annual data
| Year | Operating MarginValue | YoY GrowthYoY |
|---|---|---|
| FY2025 | 27.4% | -20.3% |
| FY2024 | 34.4% | +1.7% |
| FY2023 | 33.8% | -7.4% |
| FY2022 | 36.5% | +13.9% |
| FY2021 | 32.1% | +17.9% |
| FY2020 | 27.2% | -14.8% |
| FY2019 | 31.9% | -14.1% |
| FY2018 | 37.1% | +4.1% |
| FY2017 | 35.7% | +0.0% |
| FY2016 | 35.7% | -12.9% |
As of FY2025 · SEC 10-K · Updated Jun 30, 2026