Westlake Corporation (WLK) Seasonality
Recurring seasonal patterns for WLK — the calendar windows where Westlake Corporation has historically tended to rise or fall, with the win rate (how often it repeated) and average return for each, based on the last 10 years of price history.
WLK seasonality at a glance
Over the last 10 years, WLK's strongest seasonal window has been Oct 31 – Nov 10: it ended higher in 9 of 10 years (90% win rate) with an average return of +6.22% across a 10-day hold. On the weak side, WLK has historically declined between Jun 9 – Jun 19, falling in 9 of 10 years (average -6.01%).
In total, our analysis finds 738 recurring seasonal windows for Westlake Corporation — 483 bullish and 255 bearish. The next high-win-rate window, Sep 23 – Oct 3, opens in 12 days. These figures describe historical behaviour only — not a forecast.
WLK's upcoming & recent seasonal patterns
Holding period:10-day20-day30-dayOrdered by season — windows opening soon first, plus a couple of recently completed high-performers. Holding-period colors help you compare durations at a glance.
| Status | Seasonal window | Hold | Avg return | Win rate | This year |
|---|---|---|---|---|---|
| Completedended 9d ago | Aug 3 – Sep 2 | 30d | +6.24% | 80% | +9.89% |
| Completedended 19d ago | Jul 24 – Aug 23 | 30d | +2.97% | 80% | +6.92% |
| Upcomingin 12d | Sep 23 – Oct 3 | 10d | +2.30% | 80% | — |
| Upcomingin 14d | Sep 25 – Oct 5 | 10d | +4.28% | 80% | — |
| Upcomingin 28d | Oct 9 – Oct 29 | 20d | -2.55% | 80% | — |
| Upcomingin 30d | Oct 11 – Oct 31 | 20d | -3.56% | 80% | — |
| Upcomingin 41d | Oct 22 – Nov 11 | 20d | +4.17% | 80% | — |
Win rate = how often the pattern repeated in the same direction. Average return = the mean move across all analysed years. Past performance does not guarantee future results.
Explore WLK seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
WLK seasonality FAQ
What has historically been the best month to buy WLK stock?
Based on the last 10 years of price data, WLK's strongest seasonal window starts in October: Oct 31 to Nov 10, which ended higher in 9 of 10 years (90% win rate) with an average return of +6.22%. Past seasonal patterns do not guarantee future performance.
What is WLK's strongest seasonal pattern?
WLK's highest-win-rate pattern in our data is the Oct 31 – Nov 10 window (10-day hold): up in 9 of the last 10 years with an average move of +6.22%.
When has WLK historically performed worst?
WLK's weakest recurring window has been Jun 9 to Jun 19, declining in 9 of 10 years with an average return of -6.01%.
How reliable are WLK's seasonal patterns?
Each WLK pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. WLK currently shows 738 recurring windows (483 bullish, 255 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is WLK stock seasonality?
Seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing Westlake Corporation's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where WLK has repeatedly risen (bullish) or fallen (bearish). Each pattern is scored by its win rate and average return so you can judge how reliable and how strong it has been.
Seasonality is one input among many — it works best alongside your own research and risk management. Learn more in our guide to seasonal analysis and the tutorials.