Market SeasonalityFree alerts

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.

Last close
13,788.93
Day
+0.62%
1 month
-4.22%
Year to date
+3.93%
1 year
+9.86%
From 52-week high
-5.77%
+1.8%+0.9%-0.9%-1.8%Jan: average +0.48%, up in 53% of 36 yearsJanFeb: average +0.60%, up in 64% of 36 yearsFebMar: average +0.64%, up in 58% of 36 yearsMarApr: average +1.22%, up in 64% of 36 yearsAprMay: average +0.85%, up in 67% of 36 yearsMayJun: average -0.32%, up in 47% of 36 yearsJunJul: average +1.02%, up in 67% of 36 yearsJulAug: average -0.59%, up in 50% of 36 yearsAugSep: average -0.86%, up in 50% of 36 yearsSepOct: average +1.26%, up in 69% of 35 yearsOctNov: average +1.82%, up in 77% of 35 yearsNovDec: average +1.43%, up in 72% of 36 yearsDec
Swiss Market Index: average return by calendar month, 1990 to 2026. Solid bars held the same direction in both halves of the sample; faded bars did not.

Month by month

MonthAverageMedianUp yearsLast 10 yearsBestWorstYearsPattern
January+0.48%+0.33%53%+1.57%+8.59% 2025-9.60% 200836no clear pattern
February+0.60%+1.47%64%+0.18%+10.07% 1991-11.33% 200936weak
March+0.64%+1.11%58%-0.78%+8.70% 1996-8.83% 202636no clear pattern
April+1.22%+1.42%64%+0.74%+11.19% 2003-4.00% 202436strong
May+0.85%+1.85%67%+0.51%+7.28% 1995-5.78% 199936moderate
June-0.32%-0.05%47%+0.65%+11.48% 1997-9.05% 200236no clear pattern
July+1.02%+1.26%67%+1.66%+10.12% 2009-13.09% 200236moderate
August-0.59%+0.25%50%-0.08%+4.48% 2009-18.93% 199836no clear pattern
September-0.86%-0.29%50%-1.28%+8.76% 1997-13.76% 199836no clear pattern
October+1.26%+1.40%69%-0.59%+13.72% 1998-7.54% 200835strong
November+1.82%+1.51%77%+2.59%+9.28% 2020-5.47% 200835strong
December+1.43%+1.94%72%+0.86%+9.10% 1992-9.51% 200236strong

Returns from the last close of the previous month to the last close of the month. Source: Yahoo Finance (^SSMI). Download monthly data (CSV).

What drives Swiss Market Index

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

YearJanFebMarAprMayJunJulAugSepOctNovDec
2026-0.66.3-8.82.83.14.81.1-0.4-3.2
20258.63.2-3.1-3.80.9-2.5-0.73.0-0.61.04.93.4
20241.80.92.5-4.06.6-0.12.71.0-2.1-3.1-0.2-1.4
20235.2-1.70.13.0-1.90.60.3-1.6-1.5-5.24.52.6
2022-5.0-2.01.5-0.3-4.3-7.53.8-2.6-5.45.52.8-3.6
2021-1.1-0.75.0-0.23.74.51.52.4-6.24.00.45.9
20200.1-7.5-5.33.42.12.2-0.41.30.5-5.99.32.2
20196.44.70.93.1-2.53.90.2-0.21.91.42.71.2
2018-0.5-4.6-1.91.7-4.81.86.6-2.21.3-0.70.2-6.7
20170.93.11.31.82.3-1.21.7-1.42.60.90.80.7
2016-5.7-5.7-0.52.03.2-2.41.30.9-0.8-3.80.64.4
2015-6.77.51.3-0.61.8-5.07.4-6.4-3.55.00.6-1.9
2014-0.13.5-0.30.32.3-1.4-1.73.02.00.03.5-1.8
20138.32.72.91.20.5-3.31.8-0.93.62.60.4-0.7
20120.62.32.1-2.2-4.03.75.5-0.21.71.53.40.0
20110.72.0-3.82.90.2-5.6-6.5-4.40.13.6-1.45.0

Monthly change in percent. Most recent years at the top.

Latest insights on Swiss Market Index

No insights yet. New ones are added every weekday morning.

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.

Get alerts for Swiss Market Index

Free during launch. Pick your markets and topics; we email when something relevant happens, with sources and history attached.

Build a free watchlist

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.