IBEX 35 Index Asy. MEM Volatility Analysis
Volatility prediction for Tuesday, July 21st, 2026
1 Day
14.16%
decreased by 0.25%
1 Week
14.69%
increased by 0.28%
1 Month
16.24%
increased by 1.83%
Analysis last updated: Monday, July 20, 2026 at 04:19 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 5, 1990 to Jul 17, 2026Model Insight
This asset exhibits a notable leverage effect: negative returns increase next-day volatility 88% more than equivalent positive returns.
μ
AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0599 | 16.85*** |
α ARCH Response to squared shocks | 0.1492 | 25.74*** |
β GARCH Volatility persistence | 0.7489 | 253.88*** |
γ leverage Additional response to negative shocks | 0.1318 | 15.84*** |
Persistence:
0.964
Half-life:
19 days
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