Axcelis Technologies, Inc. (ACLS) Seasonality
Recurring seasonal patterns for ACLS — the calendar windows where Axcelis Technologies, Inc. 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.
ACLS seasonality at a glance
Over the last 10 years, ACLS's strongest seasonal window has been May 26 – Jun 5: it ended higher in 9 of 10 years (90% win rate) with an average return of +3.17% across a 10-day hold. On the weak side, ACLS has historically declined between Apr 1 – Apr 11, falling in 8 of 10 years (average -3.92%).
In total, our analysis finds 803 recurring seasonal windows for Axcelis Technologies, Inc. — 645 bullish and 158 bearish. The next high-win-rate window, Oct 30 – Nov 19, opens in 49 days. These figures describe historical behaviour only — not a forecast.
ACLS'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 14d ago | Aug 8 – Aug 28 | 20d | -1.96% | 80% | -17.61% |
| Completedended 18d ago | Aug 14 – Aug 24 | 10d | -2.26% | 80% | -11.89% |
| Upcomingin 49d | Oct 30 – Nov 19 | 20d | +6.71% | 80% | — |
| Upcomingin 49d | Oct 30 – Nov 29 | 30d | +7.75% | 80% | — |
| Upcomingin 50d | Oct 31 – Nov 20 | 20d | +7.02% | 80% | — |
| Upcomingin 52d | Nov 2 – Nov 12 | 10d | +6.35% | 80% | — |
| Upcomingin 56d | Nov 6 – Nov 16 | 10d | +4.94% | 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 ACLS seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
ACLS seasonality FAQ
What has historically been the best month to buy ACLS stock?
Based on the last 10 years of price data, ACLS's strongest seasonal window starts in May: May 26 to Jun 5, which ended higher in 9 of 10 years (90% win rate) with an average return of +3.17%. Past seasonal patterns do not guarantee future performance.
What is ACLS's strongest seasonal pattern?
ACLS's highest-win-rate pattern in our data is the May 26 – Jun 5 window (10-day hold): up in 9 of the last 10 years with an average move of +3.17%.
When has ACLS historically performed worst?
ACLS's weakest recurring window has been Apr 1 to Apr 11, declining in 8 of 10 years with an average return of -3.92%.
How reliable are ACLS's seasonal patterns?
Each ACLS pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. ACLS currently shows 803 recurring windows (645 bullish, 158 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is ACLS stock seasonality?
Seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing Axcelis Technologies, Inc.'s price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where ACLS 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.