BAE Systems (BA.L) Seasonality
Recurring seasonal patterns for BA.L — the calendar windows where BAE Systems 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.
BA.L seasonality at a glance
Over the last 10 years, BA.L's strongest seasonal window has been Mar 13 – Apr 12: it ended higher in 10 of 10 years (100% win rate) with an average return of +4.29% across a 30-day hold. On the weak side, BA.L has historically declined between Oct 12 – Oct 22, falling in 9 of 10 years (average -2.69%).
In total, our analysis finds 649 recurring seasonal windows for BAE Systems — 478 bullish and 171 bearish. The next high-win-rate window, Oct 11 – Oct 21, opens in 76 days. These figures describe historical behaviour only — not a forecast.
BA.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 8d ago | Jul 9 – Jul 19 | 10d | +1.93% | 80% | +2.23% |
| Completedended 29d ago | Jun 8 – Jun 28 | 20d | -1.88% | 80% | -7.45% |
| Upcomingin 76d | Oct 11 – Oct 21 | 10d | -2.45% | 80% | — |
| Upcomingin 76d | Oct 11 – Oct 31 | 20d | -4.07% | 80% | — |
| Upcomingin 77d | Oct 12 – Oct 22 | 10d | -2.69% | 90% | — |
| Upcomingin 77d | Oct 12 – Nov 1 | 20d | -3.81% | 80% | — |
| Upcomingin 78d | Oct 13 – Oct 23 | 10d | -2.07% | 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 BA.L seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
BA.L seasonality FAQ
What has historically been the best month to buy BA.L stock?
Based on the last 10 years of price data, BA.L's strongest seasonal window starts in March: Mar 13 to Apr 12, which ended higher in 10 of 10 years (100% win rate) with an average return of +4.29%. Past seasonal patterns do not guarantee future performance.
What is BA.L's strongest seasonal pattern?
BA.L's highest-win-rate pattern in our data is the Mar 13 – Apr 12 window (30-day hold): up in 10 of the last 10 years with an average move of +4.29%.
When has BA.L historically performed worst?
BA.L's weakest recurring window has been Oct 12 to Oct 22, declining in 9 of 10 years with an average return of -2.69%.
How reliable are BA.L's seasonal patterns?
Each BA.L pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. BA.L currently shows 649 recurring windows (478 bullish, 171 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is BA.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 BAE Systems's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where BA.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.