Westlake (WLK) Operating Margin (2010 - 2026)
Westlake's quarterly Operating Margin came in at 6.49% in Q1 2026, down 536.0% year-on-year from 1.49% in Q1 2025, and up 75.52% quarter-over-quarter from 26.49% in Q4 2025.
Westlake has reported Operating Margin for 17 years, with the latest figure at 6.49% in Q1 2026.
- For the quarter ending Q1 2026, Operating Margin fell 536.0% year-over-year to 6.49%; the trailing twelve-month figure through Mar 2026 stood at 15.65% (down 2081.0% YoY), and the FY2025 full-year result was 14.13%, down 2133.0% from the prior year.
- Operating Margin for Q1 2026 stood at 6.49%, up from 26.49% in the prior quarter.
- The five-year high for Operating Margin was 26.21% in Q2 2022, with the low at 26.99% in Q3 2025.
- Average Operating Margin over 5 years is 3.41%, with a median of 7.5% recorded in 2024.
- Year-over-year, Operating Margin soared 2185 bps in 2024 and tumbled 3277 bps in 2025.
- Tracing WLK's Operating Margin over 5 years: stood at 9.91% in 2022, then slumped by 297 bps to 19.53% in 2023, then soared by 112 bps to 2.32% in 2024, then sank by 1241 bps to 26.49% in 2025, then surged by 76 bps to 6.49% in 2026.
- The last three Operating Margin figures came in at 6.49% (Q1 2026), 26.49% (Q4 2025), and 26.99% (Q3 2025), per Business Quant data.
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Operating Margin (Qtr) |
|---|---|---|---|---|---|
| 1 | Linde | 230.79 Bn | 226.84 Bn | 4.26 Bn | 27.78% |
| 2 | Chemical & Mining Co Of Chile | 127.66 Bn | 124.93 Bn | 778.60 Mn | 47.01% |
| 3 | Sherwin Williams | 72.51 Bn | 72.30 Bn | 2.78 Bn | 14.31% |
| 4 | Ecolab | 70.96 Bn | 70.34 Bn | 1.85 Bn | 16.97% |
| 5 | Air Products & Chemicals | 62.15 Bn | 63.70 Bn | 987.40 Mn | 23.73% |
| 6 | Ppg Industries | 25.04 Bn | 23.57 Bn | 1.66 Bn | 14.05% |
| 7 | LyondellBasell Industries | 21.62 Bn | 21.73 Bn | 701.00 Mn | 3.32% |
| 8 | Albemarle | 20.26 Bn | 19.42 Bn | 500.97 Mn | 35.06% |
| 9 | DuPont de Nemours | 19.45 Bn | 19.56 Bn | 602.00 Mn | 17.85% |
| 10 | Westlake | 11.07 Bn | 9.10 Bn | 112.00 Mn | -6.49% |
Historic Data
Download Data| Date | Value |
|---|---|
| Mar 31, 2026 | -6.49% |
| Dec 31, 2025 | -26.49% |
| Sep 30, 2025 | -26.99% |
| Jun 30, 2025 | -3.69% |
| Mar 31, 2025 | -1.12% |
| Dec 31, 2024 | 2.32% |
| Sep 30, 2024 | 5.77% |
| Jun 30, 2024 | 12.66% |
| Mar 31, 2024 | 7.50% |
| Dec 31, 2023 | -19.53% |
| Sep 30, 2023 | 11.20% |
| Jun 30, 2023 | 12.18% |
| Mar 31, 2023 | 15.97% |
| Dec 31, 2022 | 9.91% |
| Sep 30, 2022 | 13.04% |
| Jun 30, 2022 | 26.21% |
| Mar 31, 2022 | 25.44% |
| Dec 31, 2021 | 24.89% |
| Sep 30, 2021 | 28.18% |
| Jun 30, 2021 | 25.18% |
| Mar 31, 2021 | 14.68% |
| Dec 31, 2020 | 9.06% |
| Sep 30, 2020 | 4.16% |
| Jun 30, 2020 | 2.11% |
| Mar 31, 2020 | 7.04% |
| Dec 31, 2019 | 5.42% |
| Sep 30, 2019 | 10.94% |
| Jun 30, 2019 | 9.05% |
| Mar 31, 2019 | 6.62% |
| Dec 31, 2018 | 10.38% |
| Sep 30, 2018 | 17.56% |
| Jun 30, 2018 | 18.08% |
| Mar 31, 2018 | 18.65% |
| Dec 31, 2017 | 18.06% |
| Sep 30, 2017 | 17.26% |
| Jun 30, 2017 | 13.34% |
| Mar 31, 2017 | 12.04% |
| Dec 31, 2016 | 8.82% |
| Sep 30, 2016 | 3.59% |
| Jun 30, 2016 | 16.57% |
| Mar 31, 2016 | 20.72% |
| Dec 31, 2015 | 18.36% |
| Sep 30, 2015 | 21.38% |
| Jun 30, 2015 | 24.93% |
| Mar 31, 2015 | 20.78% |
| Dec 31, 2014 | 26.62% |
| Sep 30, 2014 | 24.48% |
| Jun 30, 2014 | 26.72% |
| Mar 31, 2014 | 24.14% |
| Dec 31, 2013 | 27.07% |
| Sep 30, 2013 | 26.55% |
| Jun 30, 2013 | 25.05% |
| Mar 31, 2013 | 22.44% |
| Dec 31, 2012 | 19.50% |
| Sep 30, 2012 | 17.36% |
| Jun 30, 2012 | 18.71% |
| Mar 31, 2012 | 14.07% |
| Dec 31, 2011 | 5.87% |
| Sep 30, 2011 | 12.12% |
| Jun 30, 2011 | 14.96% |
| Mar 31, 2011 | 16.22% |
| Dec 31, 2010 | 17.23% |
| Sep 30, 2010 | 13.77% |
| Jun 30, 2010 | 12.16% |