Seasonality
WLK seasonality — Westlake Corporation
Over the last 11 years, WLK's strongest month on average has been November (+5.5%) and its weakest May (-3.7%).
Average return by month
Month-by-month statistics
| Month | Avg | Median | Up % | Best | Worst | Yrs |
|---|---|---|---|---|---|---|
| Jan | +3.60% | +3.63% | 60% | +19.7% | -12.8% | 10 |
| Feb | +3.66% | -0.73% | 50% | +32.9% | -8.7% | 10 |
| Mar | -0.47% | +3.20% | 60% | +11.9% | -31.7% | 10 |
| Apr | +0.10% | -1.61% | 40% | +13.8% | -7.6% | 10 |
| May | -3.68% | +1.56% | 50% | +9.8% | -24.7% | 10 |
| Jun | -0.59% | -0.05% | 50% | +21.2% | -25.8% | 10 |
| Jul | +1.43% | +0.60% | 50% | +15.1% | -8.0% | 10 |
| Aug | +1.06% | +3.33% | 60% | +10.7% | -13.3% | 10 |
| Sep | -2.40% | -0.74% | 50% | +11.8% | -17.0% | 10 |
| Oct | -1.14% | -0.68% | 50% | +11.2% | -14.2% | 10 |
| Nov | +5.49% | +8.69% | 67% | +15.3% | -4.5% | 9 |
| Dec | +1.42% | +3.34% | 60% | +10.7% | -10.7% | 10 |
Monthly returns heat map — WLK
price return, %| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 7.3 | 32.9 | 10.9 | -1.3 | -24.7 | -15.9 | -3.4 | 6.5 | -17.0 | 9.6 | -7.0 | -14.1% | |
| 2025 | -0.3 | -1.7 | -10.9 | -7.6 | -23.1 | 6.9 | 4.4 | 10.7 | -12.2 | -10.7 | -2.9 | 10.7 | -35.5% |
| 2024 | -1.1 | 0.3 | 10.2 | -3.6 | 9.0 | -9.8 | 2.1 | -1.6 | 3.3 | -12.2 | -2.7 | -10.7 | -18.1% |
| 2023 | 19.7 | -2.9 | -2.6 | -1.9 | -8.6 | 14.9 | 15.1 | -4.7 | -4.8 | -7.5 | 11.3 | 9.0 | +36.5% |
| 2022 | 1.6 | 11.8 | 11.9 | 2.5 | 4.4 | -25.8 | -0.7 | 1.3 | -11.9 | 11.2 | 11.4 | -4.8 | +5.6% |
| 2021 | -6.3 | 11.9 | 3.7 | 5.7 | 7.4 | -10.7 | -8.0 | 5.3 | 4.3 | 6.8 | -4.5 | 4.5 | +19.0% |
| 2020 | -12.8 | -8.7 | -31.7 | 13.8 | 9.8 | 12.5 | 1.6 | 8.8 | 6.6 | 7.0 | 11.1 | 8.6 | +16.3% |
| 2019 | 11.7 | -5.5 | -2.9 | 2.8 | -17.9 | 21.2 | -2.7 | -13.3 | 11.8 | -3.6 | 8.7 | 2.1 | +6.0% |
| 2018 | 5.7 | -3.9 | 2.7 | -3.8 | 8.2 | -7.0 | -0.4 | -11.8 | -12.1 | -14.2 | 1.7 | -8.7 | -37.9% |
| 2017 | 10.6 | 2.5 | 4.1 | -5.8 | -1.3 | 7.7 | 6.3 | 9.3 | 8.0 | 2.2 | 15.3 | 8.8 | +90.3% |
| 2016 | -5.4 |