The takeaway
Hesai Group Sponsored ADR shows a pronounced seasonal pattern over 3 years of data — strongest in December (+29.1%) and softest in January (−16.5%).
Right now
In July, the stock has risen 67% of years, averaging +2.1% — essentially in line with the S&P 500.
The full picture
Hesai Group Sponsored ADR's most dependable month has been December, higher in 2 of 3 years; January 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 | — |
Month by month
The stock's clearest edge over the S&P 500 lands in December (+28.1 pts); it has trailed the market most in January (−16.3 pts).
“vs S&P” is Hesai Group Sponsored ADR’s average for a month minus the S&P 500’s average for that same month — isolating Hesai Group Sponsored ADR’s own seasonal edge from broad market drift.
Reality check
Over the last 3 years, December has closed higher 67% of the time versus 67% across the last 3 years — the pattern is holding.
Figures are the typical (median) December return and how often it rose — the last 3 years versus the last 3(the heatmap’s default window). This verdict stays anchored to that 3-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
December looks the standout, up in 2 of 3 Decembers — yet the appeal is lumpy, leaning on the occasional blow-out year rather than dependable strength.
The headline flatters a touch — its +29.1% average sits well above the +17.5% a typical year delivers, the work of a few big Decembers. That reliability comes with real swings, mind — even December ranges by 38.4% 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: December has cleared the S&P 500 by +28.1 points above the index.
A few other months pull their weight: May, June, and July have also closed higher more often than not. At the other end of the calendar, January has been the soft spot — the weakest of 6 months that average a loss (−16.5%), and the edge isn't year-round — the stock has trailed the S&P 500 in January, April, and October. Its roughest month on record was a −38.2% April in 2023 — a reminder of how hard even a seasonal name can fall.
Hold it loosely, then: the December tendency is genuine but lumpy, more about the occasional outsized year than a gain to bank on. With a short 3-year record and returns that swing hard year to year, the signal is best held loosely.
Short answers on the stock's best month (December), its worst (January), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2023 its best month (December, +29.1%) has run well ahead of its worst (January, −16.5%) — the heatmap above shows how steady that gap has been year to year.
December has been the strongest, averaging +29.1% and closing higher in 2 of 3 years since 2023.
It's the weakest, averaging −16.5% — 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