BlackLine Systems, Inc. (BL) Seasonality
Recurring seasonal patterns for BL — the calendar windows where BlackLine Systems, 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.
BL seasonality at a glance
Over the last 10 years, BL's strongest seasonal window has been Nov 2 – Dec 2: it ended higher in 9 of 10 years (90% win rate) with an average return of +10.62% across a 30-day hold. On the weak side, BL has historically declined between Feb 21 – Mar 13, falling in 8 of 9 years (average -5.76%).
In total, our analysis finds 794 recurring seasonal windows for BlackLine Systems, Inc. — 511 bullish and 283 bearish. The next high-win-rate window, Oct 27 – Nov 16, opens tomorrow. These figures describe historical behaviour only — not a forecast.
BL'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 55d ago | Aug 22 – Sep 1 | 10d | +4.82% | 89% | +1.19% |
| Completedended 101d ago | Jun 17 – Jul 17 | 30d | +2.79% | 89% | +13.02% |
| Active20d left | Oct 26 – Nov 15 | 20d | +6.93% | 89% | — |
| Upcomingtomorrow | Oct 27 – Nov 16 | 20d | +5.46% | 89% | — |
| Upcomingin 2d | Oct 28 – Nov 27 | 30d | +8.63% | 80% | — |
| Upcomingin 3d | Oct 29 – Nov 28 | 30d | +9.36% | 90% | — |
| Upcomingin 4d | Oct 30 – Nov 29 | 30d | +8.48% | 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 BL seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
BL seasonality FAQ
What has historically been the best month to buy BL stock?
Based on the last 10 years of price data, BL's strongest seasonal window starts in November: Nov 2 to Dec 2, which ended higher in 9 of 10 years (90% win rate) with an average return of +10.62%. Past seasonal patterns do not guarantee future performance.
What is BL's strongest seasonal pattern?
BL's highest-win-rate pattern in our data is the Nov 2 – Dec 2 window (30-day hold): up in 9 of the last 10 years with an average move of +10.62%.
When has BL historically performed worst?
BL's weakest recurring window has been Feb 21 to Mar 13, declining in 8 of 9 years with an average return of -5.76%.
How reliable are BL's seasonal patterns?
Each BL pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. BL currently shows 794 recurring windows (511 bullish, 283 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is BL stock seasonality?
Seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing BlackLine Systems, Inc.'s price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where BL 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.