Marsh McLennan (MRSH) Seasonality
Recurring seasonal patterns for MRSH — the calendar windows where Marsh McLennan has historically tended to rise or fall, with the win rate (how often it repeated) and average return for each, based on the last 10 years of price history.
MRSH seasonality at a glance
Over the last 10 years, MRSH's strongest seasonal window has been Nov 1 – Dec 1: it ended higher in 10 of 10 years (100% win rate) with an average return of +5.46% across a 30-day hold. On the weak side, MRSH has historically declined between Dec 4 – Jan 3, falling in 9 of 10 years (average -3.04%).
In total, our analysis finds 639 recurring seasonal windows for Marsh McLennan — 492 bullish and 147 bearish. The next high-win-rate window, Jul 28 – Aug 27, opens tomorrow. These figures describe historical behaviour only — not a forecast.
MRSH's upcoming & recent seasonal patterns
Holding period:10-day20-day30-dayOrdered by season — windows opening soon first, plus a couple of recently completed high-performers. Holding-period colors help you compare durations at a glance.
| Status | Seasonal window | Hold | Avg return | Win rate | This year |
|---|---|---|---|---|---|
| Completedended 3d ago | Jun 24 – Jul 24 | 30d | +3.51% | 80% | +6.89% |
| Completedended 4d ago | Jun 23 – Jul 23 | 30d | +3.39% | 80% | +8.28% |
| Upcomingtomorrow | Jul 28 – Aug 27 | 30d | +1.22% | 80% | — |
| Upcomingin 6d | Aug 2 – Sep 1 | 30d | +1.92% | 80% | — |
| Upcomingin 7d | Aug 3 – Sep 2 | 30d | +1.88% | 80% | — |
| Upcomingin 10d | Aug 6 – Aug 16 | 10d | +1.01% | 80% | — |
| Upcomingin 11d | Aug 7 – Sep 6 | 30d | +1.71% | 80% | — |
Win rate = how often the pattern repeated in the same direction. Average return = the mean move across all analysed years. Past performance does not guarantee future results.
Explore MRSH seasonality in full
See the seasonal curve chart, filter by win rate and return, and track upcoming windows — free during beta.
MRSH seasonality FAQ
What has historically been the best month to buy MRSH stock?
Based on the last 10 years of price data, MRSH's strongest seasonal window starts in November: Nov 1 to Dec 1, which ended higher in 10 of 10 years (100% win rate) with an average return of +5.46%. Past seasonal patterns do not guarantee future performance.
What is MRSH's strongest seasonal pattern?
MRSH's highest-win-rate pattern in our data is the Nov 1 – Dec 1 window (30-day hold): up in 10 of the last 10 years with an average move of +5.46%.
When has MRSH historically performed worst?
MRSH's weakest recurring window has been Dec 4 to Jan 3, declining in 9 of 10 years with an average return of -3.04%.
How reliable are MRSH's seasonal patterns?
Each MRSH pattern is scored by its historical win rate — the share of the last 10 years it repeated in the same direction. MRSH currently shows 639 recurring windows (492 bullish, 147 bearish). Seasonality describes historical tendencies only; it is not a prediction, and past performance does not guarantee future results.
What is MRSH stock seasonality?
Stock seasonality is the tendency of a stock to perform in a similar way during the same period each year. By analysing Marsh McLennan's price history across many years, SeasonalityX identifies recurring calendar windows — exact start and end dates — where MRSH has repeatedly risen (bullish) or fallen (bearish). Each pattern is scored by its win rate and average return so you can judge how reliable and how strong it has been.
Seasonality is one input among many — it works best alongside your own research and risk management. Learn more in our guide to seasonal analysis and the tutorials.