IBEX 35: seasonality, event history and insights
In October, IBEX 35 has averaged +1.76% and risen in 67% of 33 years (1993 to 2025). We rate the October pattern as strong.
Last close 19,444.20 on October 6, 2026: +0.75% on the day, +12.34% this year, +0.09% so far in October.
Technicals
Month by month
| Month | Average | Median | Up years | Last 10 years | Best | Worst | Years | Pattern |
|---|---|---|---|---|---|---|---|---|
| January | +0.96% | +1.20% | 58% | +2.23% | +11.05% | -12.87% | 33 | no clear pattern |
| February | +0.95% | +0.87% | 55% | +1.06% | +16.16% | -9.82% | 33 | no clear pattern |
| March | -0.36% | -1.41% | 42% | -1.14% | +14.71% | -22.21% | 33 | no clear pattern |
| April | +1.98% | +2.02% | 73% | +1.99% | +15.65% | -12.45% | 33 | strong |
| May | -0.21% | +0.09% | 52% | +1.19% | +6.64% | -13.14% | 33 | no clear pattern |
| June | -0.58% | -0.23% | 48% | -0.28% | +16.62% | -13.04% | 33 | no clear pattern |
| July | +0.49% | +0.55% | 55% | +0.09% | +13.35% | -9.60% | 33 | no clear pattern |
| August | -0.34% | -0.21% | 50% | -0.21% | +12.71% | -21.24% | 34 | no clear pattern |
| September | -0.42% | +0.25% | 50% | -0.10% | +11.29% | -15.60% | 34 | no clear pattern |
| October | +1.76% | +2.27% | 67% | +0.49% | +14.64% | -17.03% | 33 | strong |
| November | +2.09% | +1.73% | 67% | +3.05% | +25.18% | -14.29% | 33 | strong |
| December | +1.44% | +1.98% | 67% | +1.12% | +10.43% | -9.70% | 33 | strong |
What drives IBEX 35
- Spain's benchmark, heavy in banks and utilities, so it tracks ECB rate expectations closely.
- Latin American exposure through Spanish banks and telecoms adds an emerging-market element.
Sell in May for IBEX 35
From 1994 to 2025, the November to April half averaged +7.31% and the May to October half -0.14%. The winter half did better in 63% of 32 years. Compare all markets.
Year by year
Latest insights on IBEX 35
Questions
What is the best month for IBEX 35?
Since 1993, November has had the highest average move for IBEX 35 at +2.09%, rising in 67% of 33 years. April has the highest share of positive years (73%).
What is the worst month for IBEX 35?
June has had the weakest average move at -0.58%, rising in 48% of 33 years.
How does IBEX 35 usually do in October?
IBEX 35 has averaged +1.76% in October (median +2.27%), rising in 67% of 33 years. We rate the pattern as strong.
Alerts for IBEX 35
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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.