The takeaway
Cumberland Pharmaceuticals Inc shows a pronounced seasonal pattern over 10 years of data — strongest in December (+17.5%) and softest in March (−6.8%).
Right now
In July, the stock has risen 40% of years, averaging +1.3%, roughly 0.9 pts behind the S&P 500.
The full picture
Cumberland Pharmaceuticals Inc's most dependable month has been December, higher in 5 of 10 years; March 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 | ||||||||||||
| 2024 | ||||||||||||
| 2023 | ||||||||||||
| 2022 | ||||||||||||
| 2021 | ||||||||||||
| 2020 | ||||||||||||
| 2019 | ||||||||||||
| 2018 | ||||||||||||
| 2017 | ||||||||||||
| 2016 |
Month by month
The stock's clearest edge over the S&P 500 lands in December (+16.5 pts); it has trailed the market most in March (−7.8 pts).
“vs S&P” is Cumberland Pharmaceuticals Inc’s average for a month minus the S&P 500’s average for that same month — isolating Cumberland Pharmaceuticals Inc’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, December has closed higher 80% of the time versus 50% 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
The calendar barely registers for this stock. Even its firmest month, December, has risen in only 5 of 10 Decembers — nothing recurs reliably enough to lean on.
Its roughest month on record was a −41.3% June in 2025 — 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 honest read is that the calendar is close to noise here — better treated as background than a reason to act. With returns that swing hard year to year, the signal is best held loosely.
Short answers on the stock's best month (December), its worst (March), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2016 its best month (December, +17.5%) has run well ahead of its worst (March, −6.8%) — the heatmap above shows how steady that gap has been year to year.
December has been the strongest, averaging +17.5% and closing higher in 5 of 10 years since 2016.
It's the weakest, averaging −6.8% — 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