AstraZeneca (AZN.L) Seasonality
Recurring seasonal patterns for AZN.L — the calendar windows where AstraZeneca 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.
AZN.L seasonality at a glance
Over the last 10 years, AZN.L's strongest seasonal window has been Apr 26 – May 26: it ended higher in 9 of 10 years (90% win rate) with an average return of +4.33% across a 30-day hold. On the weak side, AZN.L has historically declined between Jan 5 – Feb 4, falling in 9 of 10 years (average -3.94%).
In total, our analysis finds 663 recurring seasonal windows for AstraZeneca — 496 bullish and 167 bearish. The next high-win-rate window, Jul 28 – Aug 17, opens tomorrow. These figures describe historical behaviour only — not a forecast.
AZN.L'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 49d ago | May 9 – Jun 8 | 30d | +2.61% | 80% | +3.37% |
| Completedended 53d ago | May 5 – Jun 4 | 30d | +3.70% | 80% | +1.68% |
| Active20d left | Jul 27 – Aug 16 | 20d | +3.64% | 90% | — |
| Active30d left | Jul 27 – Aug 26 | 30d | +4.23% | 80% | — |
| Upcomingtomorrow | Jul 28 – Aug 17 | 20d | +2.52% | 80% | — |
| Upcomingin 4d | Jul 31 – Aug 20 | 20d | +1.91% | 80% | — |
| Upcomingin 8d | Aug 4 – Aug 24 | 20d | +1.99% | 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 AZN.L seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
AZN.L seasonality FAQ
What has historically been the best month to buy AZN.L stock?
Based on the last 10 years of price data, AZN.L's strongest seasonal window starts in April: Apr 26 to May 26, which ended higher in 9 of 10 years (90% win rate) with an average return of +4.33%. Past seasonal patterns do not guarantee future performance.
What is AZN.L's strongest seasonal pattern?
AZN.L's highest-win-rate pattern in our data is the Apr 26 – May 26 window (30-day hold): up in 9 of the last 10 years with an average move of +4.33%.
When has AZN.L historically performed worst?
AZN.L's weakest recurring window has been Jan 5 to Feb 4, declining in 9 of 10 years with an average return of -3.94%.
How reliable are AZN.L's seasonal patterns?
Each AZN.L pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. AZN.L currently shows 663 recurring windows (496 bullish, 167 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is AZN.L stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing AstraZeneca's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where AZN.L 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.