First Solar (FSLR) Seasonality
Recurring seasonal patterns for FSLR — the calendar windows where First Solar 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.
FSLR seasonality at a glance
Over the last 10 years, FSLR's strongest seasonal window has been May 9 – Jun 8: it ended higher in 9 of 10 years (90% win rate) with an average return of +8.28% across a 30-day hold. On the weak side, FSLR has historically declined between Jan 12 – Feb 11, falling in 9 of 10 years (average -7.99%).
In total, our analysis finds 777 recurring seasonal windows for First Solar — 554 bullish and 223 bearish. The next high-win-rate window, Aug 13 – Aug 23, opens in 17 days. These figures describe historical behaviour only — not a forecast.
FSLR'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 38d ago | Jun 9 – Jun 19 | 10d | -2.85% | 80% | -1.71% |
| Completedended 39d ago | Jun 8 – Jun 18 | 10d | -4.11% | 80% | -6.42% |
| Upcomingin 17d | Aug 13 – Aug 23 | 10d | -1.73% | 80% | — |
| Upcomingin 91d | Oct 26 – Nov 5 | 10d | +6.94% | 90% | — |
| Upcomingin 92d | Oct 27 – Nov 6 | 10d | +3.57% | 80% | — |
| Upcomingin 96d | Oct 31 – Nov 30 | 30d | +2.91% | 80% | — |
| Upcomingin 99d | Nov 3 – Nov 13 | 10d | -4.91% | 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 FSLR seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
FSLR seasonality FAQ
What has historically been the best month to buy FSLR stock?
Based on the last 10 years of price data, FSLR's strongest seasonal window starts in May: May 9 to Jun 8, which ended higher in 9 of 10 years (90% win rate) with an average return of +8.28%. Past seasonal patterns do not guarantee future performance.
What is FSLR's strongest seasonal pattern?
FSLR's highest-win-rate pattern in our data is the May 9 – Jun 8 window (30-day hold): up in 9 of the last 10 years with an average move of +8.28%.
When has FSLR historically performed worst?
FSLR's weakest recurring window has been Jan 12 to Feb 11, declining in 9 of 10 years with an average return of -7.99%.
How reliable are FSLR's seasonal patterns?
Each FSLR pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. FSLR currently shows 777 recurring windows (554 bullish, 223 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is FSLR stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing First Solar's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where FSLR 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.