The takeaway
Xperi Corp shows a pronounced seasonal pattern over 4 years of data — strongest in September (+3.5%) and softest in April (−9.0%).
Right now
In July, the stock has fallen 33% of years, averaging −8.0%, roughly 10.2 pts behind the S&P 500.
The full picture
Xperi Corp's most dependable month has been September, higher in 3 of 4 years; April has been its least reliable, up just 0% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Win rate % | ||||||||||||
| Median return % | ||||||||||||
| 2025 | ||||||||||||
| 2024 | ||||||||||||
| 2023 | ||||||||||||
| 2022 | — | — | — | — | — | — | — | — |
Month by month
The stock's clearest edge over the S&P 500 lands in June (+8.6 pts); it has trailed the market most in April (−10.7 pts).
“vs S&P” is Xperi Corp’s average for a month minus the S&P 500’s average for that same month — isolating Xperi Corp’s own seasonal edge from broad market drift.
Reality check
Over the last 4 years, September has closed higher 75% of the time versus 75% across the last 4 years — the pattern is holding.
Figures are the typical (median) September return and how often it rose — the last 4 years versus the last 4(the heatmap’s default window). This verdict stays anchored to that 4-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
Strip the year back and a single month does the heavy lifting: September, up in 3 of 4 Septembers while the other eleven tend to blur together.
Its average (+3.5%) and median (+8.5%) land within a hair of each other — the tell of steady, year-after-year gains rather than one outlier doing the work. That reliability comes with real swings, mind — even September ranges by 11.5% 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: September has cleared the S&P 500 by +3.6 points above the index. It bucks the broad tape, besides: September lifts just 39% of stocks across the market.
A few other months pull their weight: February, May, and June have also closed higher more often than not. The weaker half of the year is plainer: April has been the soft spot — the weakest of 6 months that average a loss (−9.0%), and the edge isn't year-round — the stock has trailed the S&P 500 in April, July, and October. Its roughest month on record was a −25.8% July in 2025 — a reminder of how hard even a seasonal name can fall.
The takeaway is less about when to buy than what to expect: September aside, the stock's months offer little reliable tilt. With a short 4-year record, the signal is best held loosely.
Short answers on the stock's best month (September), its worst (April), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2022 its best month (September, +3.5%) has run well ahead of its worst (April, −9.0%) — the heatmap above shows how steady that gap has been year to year.
September has been the strongest, averaging +3.5% and closing higher in 3 of 4 years since 2022.
It's the weakest, averaging −9.0% — 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