The takeaway
Viatris Inc shows a pronounced seasonal pattern over 10 years of data — strongest in December (+5.2%) and softest in September (−5.3%).
Right now
In July, the stock has risen 70% of years, averaging +2.1% — essentially in line with the S&P 500.
The full picture
Viatris Inc's most dependable month has been December, higher in 7 of 10 years; September has been its least reliable, up just 10% of the time.
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Month by month
The stock's clearest edge over the S&P 500 lands in December (+4.2 pts); it has trailed the market most in February (−10.5 pts).
“vs S&P” is Viatris Inc’s average for a month minus the S&P 500’s average for that same month — isolating Viatris Inc’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, December has closed higher 60% of the time versus 70% across the last 10 years — the pattern is strengthening.
Figures are the typical (median) December 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
Strip the year back and a single month does the heavy lifting: December, up in 7 of 10 Decembers while the other eleven tend to blur together.
Its average (+5.2%) and median (+8.9%) 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 December ranges by 10.6% 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 +4.2 points above the index. That consistency sets it apart from the field, where the average stock manages December only about 58% of the time.
A few other months pull their weight: May, July, and August have also closed higher more often than not. At the other end of the calendar, September has been the soft spot — the weakest of 5 months that average a loss (−5.3%), and the edge isn't year-round — the stock has trailed the S&P 500 in February, March, and September. Its roughest month on record was a −37.9% May in 2019 — a reminder of how hard even a seasonal name can fall.
If anything it has sharpened recently — the last five Decembers run ahead of the earlier years.
The takeaway is less about when to buy than what to expect: December aside, the stock's months offer little reliable tilt.
Short answers on the stock's best month (December), its worst (September), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2016 its best month (December, +5.2%) has run well ahead of its worst (September, −5.3%) — the heatmap above shows how steady that gap has been year to year.
December has been the strongest, averaging +5.2% and closing higher in 7 of 10 years since 2016.
It's the weakest, averaging −5.3% — 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