Westlake (WLK) Operating Margin (2010 - 2026)
Westlake's (WLK) 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 (WLK) Operating Margin (2010 - 2026) Analysis & Trends
Westlake's Operating Margin history runs 17 years deep, the most recent figure standing at 6.49% for Q1 2026.
- On a quarterly basis, Operating Margin fell 536.0% year-over-year to 6.49% in Q1 2026; TTM through Mar 2026 was 15.65%, a 2081.0% decrease from a year earlier, with the FY2025 full-year figure at 14.13%, down 2133.0% from the prior year.
- Operating Margin rose to 6.49% in Q1 2026 per WLK's latest filing, from 26.49% in the prior quarter.
- Across five years, Operating Margin topped out at 26.21% in Q2 2022 and bottomed at 26.99% in Q3 2025.
- The 5-year median for Operating Margin is 7.5% (2024), against an average of 3.41%.
- Across the five-year window, Operating Margin soared 2185 bps in 2024 and tumbled 3277 bps in 2025, its largest moves.
- Year by year, Operating Margin stood at 9.91% in 2022, then sank by 297 bps to 19.53% in 2023, then surged by 112 bps to 2.32% in 2024, then plunged by 1241 bps to 26.49% in 2025, then jumped by 76 bps to 6.49% in 2026.
- Per Business Quant, the three latest WLK Operating Margin figures stand at 6.49% (Q1 2026), 26.49% (Q4 2025), and 26.99% (Q3 2025).
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Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Operating Margin (Qtr) |
|---|---|---|---|---|---|
| 1 | Linde | 237.95 Bn | 233.99 Bn | 4.26 Bn | 27.78% |
| 2 | Sherwin Williams | 78.17 Bn | 77.95 Bn | 2.78 Bn | 14.31% |
| 3 | Ecolab | 76.02 Bn | 75.37 Bn | 1.85 Bn | 16.97% |
| 4 | Air Products & Chemicals | 66.38 Bn | 65.43 Bn | 987.40 Mn | 23.73% |
| 5 | Ppg Industries | 26.02 Bn | 24.40 Bn | 1.66 Bn | 16.72% |
| 6 | LyondellBasell Industries | 22.51 Bn | 19.87 Bn | 701.00 Mn | 3.32% |
| 7 | Chemical & Mining Co Of Chile | 19.70 Bn | 15.83 Bn | 778.60 Mn | 47.01% |
| 8 | International Flavors & Fragrances | 19.51 Bn | 18.95 Bn | 1.02 Bn | 9.96% |
| 9 | DuPont de Nemours | 18.80 Bn | 18.71 Bn | 602.00 Mn | 17.85% |
| 10 | Westlake | 9.48 Bn | 7.00 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% |