The takeaway
Ast Spacemobile Inc shows a pronounced seasonal pattern over 7 years of data — strongest in May (+45.7%) and softest in September (−10.7%).
Right now
In July, the stock has risen 67% of years, averaging +15.9%, about +13.7 pts better than the S&P 500.
The full picture
Ast Spacemobile Inc's most dependable month has been May, higher in 4 of 6 years; September has been its least reliable, up just 17% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| 2019 | — | — | — | — | — | — | — | — | — | — |
Month by month
The stock's clearest edge over the S&P 500 lands in May (+45.0 pts); it has trailed the market most in April (−10.6 pts).
“vs S&P” is Ast Spacemobile Inc’s average for a month minus the S&P 500’s average for that same month — isolating Ast Spacemobile Inc’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, May has closed higher 80% of the time versus 67% across the last 7 years — the pattern is strengthening.
Figures are the typical (median) May return and how often it rose — the last 5 years versus the last 7(the heatmap’s default window). This verdict stays anchored to that 7-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
May looks the standout, up in 4 of 6 Mays — yet the appeal is lumpy, leaning on the occasional blow-out year rather than dependable strength.
The headline flatters a touch — its +45.7% average sits well above the +2.4% a typical year delivers, the work of a few big Mays. That reliability comes with real swings, mind — even May ranges by 98.9% from year to year, so any single year can land far from the average. Crucially, the gain is the stock's own rather than a rising tide's: May has cleared the S&P 500 by +45.0 points above the index.
The strength clusters rather than stands alone — May–July forms a firm stretch that carries much of the year. At the other end of the calendar, September has been the soft spot — the weakest of 5 months that average a loss (−10.7%), and the edge isn't year-round — the stock has trailed the S&P 500 in April, September, and January. Its roughest month on record was a −40.8% January in 2024 — a reminder of how hard even a seasonal name can fall.
If anything it has sharpened recently — the last five Mays run ahead of the earlier years.
Hold it loosely, then: the May tendency is genuine but lumpy, more about the occasional outsized year than a gain to bank on. With a short 7-year record and returns that swing hard year to year, the signal is best held loosely.
Short answers on the stock's best month (May), its worst (September), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2019 its best month (May, +45.7%) has run well ahead of its worst (September, −10.7%) — the heatmap above shows how steady that gap has been year to year.
May has been the strongest, averaging +45.7% and closing higher in 4 of 6 years since 2019.
It's the weakest, averaging −10.7% — historically a soft spot, though it still varies from year to year.
Explore
These names have the strongest July track records on record — a starting point for comparison.
Before you trade