The takeaway
The Hanover Insurance Group Inc shows a moderate seasonal pattern over 10 years of data — strongest in November (+7.0%) and softest in April (−0.3%).
Right now
In July, the stock has risen 70% of years, averaging +1.7% — essentially in line with the S&P 500.
The full picture
The Hanover Insurance Group Inc's most dependable month has been November, higher in 9 of 10 years; April has been its least reliable, up just 30% 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 November (+4.7 pts); it has trailed the market most in April (−2.0 pts).
“vs S&P” is The Hanover Insurance Group Inc’s average for a month minus the S&P 500’s average for that same month — isolating The Hanover Insurance Group Inc’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, November has closed higher 80% of the time versus 90% across the last 10 years — the pattern is weakening.
Figures are the typical (median) November 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
Dependability is the through-line here. November stands out, higher in 9 of 10 Novembers, but it heads a clutch of months that pull the year reliably upward.
Its average (+7.0%) and median (+6.6%) land within a hair of each other — the tell of steady, year-after-year gains rather than one outlier doing the work. Crucially, the gain is the stock's own rather than a rising tide's: November has cleared the S&P 500 by +4.7 points above the index. That consistency sets it apart from the field, where the average stock manages November only about 62% of the time.
The strength clusters rather than stands alone — November–March forms a firm stretch that carries much of the year. The weaker half of the year is plainer: April is the year's quietest corner, essentially flat on average, and the edge isn't year-round — the stock has trailed the S&P 500 in April, March, and September. Its roughest month on record was a −26.8% March in 2020 — a reminder of how hard even a seasonal name can fall.
The pattern has softened of late, November's last five years slipping below its longer-run record.
The takeaway is less about when to buy than what to expect: November aside, the stock's months offer little reliable tilt.
Short answers on the stock's best month (November), its worst (April), and whether it really trades seasonally.
Yes, to a moderate degree. Since 2016 its best month (November, +7.0%) has run well ahead of its worst (April, −0.3%) — the heatmap above shows how steady that gap has been year to year.
November has been the strongest, averaging +7.0% and closing higher in 9 of 10 years since 2016.
It's the weakest, averaging −0.3% — 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