The takeaway
Joby Aviation shows a pronounced seasonal pattern over 6 years of data — strongest in June (+21.6%) and softest in August (−3.0%).
Right now
In July, the stock has risen 60% of years, averaging +18.6%, about +16.4 pts better than the S&P 500.
The full picture
Joby Aviation's most dependable month has been June, higher in 4 of 5 years; August has been its least reliable, up just 20% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Win rate % | ||||||||||||
| Median return % | ||||||||||||
| 2025 | ||||||||||||
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| 2022 | ||||||||||||
| 2021 | ||||||||||||
| 2020 | — | — | — | — | — | — | — | — | — | — |
Month by month
The stock's clearest edge over the S&P 500 lands in June (+21.3 pts); it has trailed the market most in September (−5.4 pts).
“vs S&P” is Joby Aviation’s average for a month minus the S&P 500’s average for that same month — isolating Joby Aviation’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, June has closed higher 80% of the time versus 80% across the last 6 years — the pattern is holding.
Figures are the typical (median) June return and how often it rose — the last 5 years versus the last 6(the heatmap’s default window). This verdict stays anchored to that 6-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
The seasonal story is really one month's story — June. It has closed higher in 4 of 5 Junes, a concentration the rest of the calendar can't touch.
Read it with one caveat: the average (+21.6%) runs well ahead of the median (+4.7%), so a handful of outsized years — not steady strength — do much of the lifting. That reliability comes with real swings, mind — even June ranges by 34.3% from year to year, so any single year can land far from the average. Better still, that strength is the stock's own and not just a buoyant market — June has outpaced the S&P 500 by +21.3 points on average. Few peers keep such company in June — the typical stock clears it just 52% of the time.
June anchors a run, too: the May-through-July window has been the stock's reliable season. On the other side of the ledger, August has been the soft spot — the weakest of 6 months that average a loss (−3.0%), and the edge isn't year-round — the stock has trailed the S&P 500 in September, April, and January. Its roughest month on record was a −44.5% January in 2022 — a reminder of how hard even a seasonal name can fall.
For a stock this dependable in June, the sharper question is the rest of the year — outside its strong stretch, the calendar gives far less to lean on. With a short 6-year record and returns that swing hard year to year, the signal is best held loosely.
Short answers on the stock's best month (June), its worst (August), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2020 its best month (June, +21.6%) has run well ahead of its worst (August, −3.0%) — the heatmap above shows how steady that gap has been year to year.
June has been the strongest, averaging +21.6% and closing higher in 4 of 5 years since 2020.
It's the weakest, averaging −3.0% — 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