Swiss Market Index: seasonality, event history and insights
In October, Swiss Market Index has averaged +1.26% and risen in 69% of 35 years (1991 to 2025). We rate the October pattern as strong.
Last close 13,788.93 on October 6, 2026: +0.62% on the day, +3.93% this year, -0.30% so far in October.
Technicals
Month by month
| Month | Average | Median | Up years | Last 10 years | Best | Worst | Years | Pattern |
|---|---|---|---|---|---|---|---|---|
| January | +0.48% | +0.33% | 53% | +1.57% | +8.59% | -9.60% | 36 | no clear pattern |
| February | +0.60% | +1.47% | 64% | +0.18% | +10.07% | -11.33% | 36 | weak |
| March | +0.64% | +1.11% | 58% | -0.78% | +8.70% | -8.83% | 36 | no clear pattern |
| April | +1.22% | +1.42% | 64% | +0.74% | +11.19% | -4.00% | 36 | strong |
| May | +0.85% | +1.85% | 67% | +0.51% | +7.28% | -5.78% | 36 | moderate |
| June | -0.32% | -0.05% | 47% | +0.65% | +11.48% | -9.05% | 36 | no clear pattern |
| July | +1.02% | +1.26% | 67% | +1.66% | +10.12% | -13.09% | 36 | moderate |
| August | -0.59% | +0.25% | 50% | -0.08% | +4.48% | -18.93% | 36 | no clear pattern |
| September | -0.86% | -0.29% | 50% | -1.28% | +8.76% | -13.76% | 36 | no clear pattern |
| October | +1.26% | +1.40% | 69% | -0.59% | +13.72% | -7.54% | 35 | strong |
| November | +1.82% | +1.51% | 77% | +2.59% | +9.28% | -5.47% | 35 | strong |
| December | +1.43% | +1.94% | 72% | +0.86% | +9.10% | -9.51% | 36 | strong |
What drives Swiss Market Index
- Defensive heavyweights in pharma and consumer staples dominate the index.
- A strong franc in risk-off periods weighs on reported earnings in francs.
Sell in May for Swiss Market Index
From 1992 to 2025, the November to April half averaged +5.95% and the May to October half +1.27%. The winter half did better in 68% of 34 years. Compare all markets.
Year by year
Latest insights on Swiss Market Index
Questions
What is the best month for Swiss Market Index?
Since 1990, November has had the highest average move for Swiss Market Index at +1.82%, rising in 77% of 35 years. November has the highest share of positive years (77%).
What is the worst month for Swiss Market Index?
September has had the weakest average move at -0.86%, rising in 50% of 36 years.
How does Swiss Market Index usually do in October?
Swiss Market Index has averaged +1.26% in October (median +1.40%), rising in 69% of 35 years. We rate the pattern as strong.
Alerts for Swiss Market Index
Pick your markets. We email when something relevant moves. Free during launch.
Not investment advice. Market Seasonality publishes historical statistics, news summaries and scenario analysis for information and education. Past patterns do not guarantee future results. Nothing here is a recommendation to buy, sell or hold any asset, and scenarios describe possible paths without predicting them. See the disclaimer and methodology.