The takeaway
DBV Technologies shows a pronounced seasonal pattern over 10 years of data — strongest in April (+10.9%) and softest in October (−12.5%).
Right now
In July, the stock has risen 50% of years, averaging +0.1%, roughly 2.1 pts behind the S&P 500.
The full picture
DBV Technologies's most dependable month has been April, higher in 6 of 10 years; October has been its least reliable, up just 20% of the time.
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Month by month
The stock's clearest edge over the S&P 500 lands in November (+36.2 pts); it has trailed the market most in October (−13.6 pts).
“vs S&P” is DBV Technologies’s average for a month minus the S&P 500’s average for that same month — isolating DBV Technologies’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, April has closed higher 40% of the time versus 60% across the last 10 years — the pattern is weakening.
Figures are the typical (median) April return and how often it rose — the last 5 years versus the last 10(the heatmap’s default window). This verdict stays anchored to that 10-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
This is a feast-or-famine calendar. April reads as the strong month, higher in 6 of 10 Aprils, but the tale is one of a few outsized years more than steady gains.
Read it with one caveat: the average (+10.9%) runs well ahead of the median (+1.2%), so a handful of outsized years — not steady strength — do much of the lifting. That reliability comes with real swings, mind — even April ranges by 26.2% 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 — April has outpaced the S&P 500 by +9.3 points on average.
Only December comes anywhere near it for reliability. The weaker half of the year is plainer: October has been the soft spot — the weakest of 4 months that average a loss (−12.5%), and the edge isn't year-round — the stock has trailed the S&P 500 in October, September, and August. Its roughest month on record was a −60.6% March in 2020 — a reminder of how hard even a seasonal name can fall.
The pattern has softened of late, April's last five years slipping below its longer-run record.
Hold it loosely, then: the April tendency is genuine but lumpy, more about the occasional outsized year than a gain to bank on. With returns that swing hard year to year, the signal is best held loosely.
Short answers on the stock's best month (April), its worst (October), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2016 its best month (April, +10.9%) has run well ahead of its worst (October, −12.5%) — the heatmap above shows how steady that gap has been year to year.
April has been the strongest, averaging +10.9% and closing higher in 6 of 10 years since 2016.
It's the weakest, averaging −12.5% — 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