West Pharmaceutical Services (WST) Seasonality
Recurring seasonal patterns for WST — the calendar windows where West Pharmaceutical Services 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.
WST seasonality at a glance
Over the last 10 years, WST's strongest seasonal window has been Jun 11 – Jul 11: it ended higher in 9 of 10 years (90% win rate) with an average return of +4.37% across a 30-day hold. On the weak side, WST has historically declined between Feb 6 – Mar 8, falling in 8 of 10 years (average -4.65%).
In total, our analysis finds 723 recurring seasonal windows for West Pharmaceutical Services — 555 bullish and 168 bearish. The next high-win-rate window, Sep 14 – Oct 4, opens in 3 days. These figures describe historical behaviour only — not a forecast.
WST'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 11d ago | Aug 1 – Aug 31 | 30d | +3.08% | 80% | +0.04% |
| Completedended 17d ago | Jul 26 – Aug 25 | 30d | +3.29% | 80% | +6.25% |
| Active30d left | Sep 11 – Oct 11 | 30d | -3.92% | 80% | — |
| Upcomingin 3d | Sep 14 – Oct 4 | 20d | -2.92% | 80% | — |
| Upcomingin 4d | Sep 15 – Oct 5 | 20d | -2.70% | 80% | — |
| Upcomingin 4d | Sep 15 – Oct 15 | 30d | -3.94% | 80% | — |
| Upcomingin 5d | Sep 16 – Oct 6 | 20d | -1.98% | 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 WST seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
WST seasonality FAQ
What has historically been the best month to buy WST stock?
Based on the last 10 years of price data, WST's strongest seasonal window starts in June: Jun 11 to Jul 11, which ended higher in 9 of 10 years (90% win rate) with an average return of +4.37%. Past seasonal patterns do not guarantee future performance.
What is WST's strongest seasonal pattern?
WST's highest-win-rate pattern in our data is the Jun 11 – Jul 11 window (30-day hold): up in 9 of the last 10 years with an average move of +4.37%.
When has WST historically performed worst?
WST's weakest recurring window has been Feb 6 to Mar 8, declining in 8 of 10 years with an average return of -4.65%.
How reliable are WST's seasonal patterns?
Each WST pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. WST currently shows 723 recurring windows (555 bullish, 168 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is WST stock seasonality?
Seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing West Pharmaceutical Services's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where WST 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.