CAC 40 Index MEM Volatility Analysis
Volatility prediction for Monday, July 20th, 2026
1 Day
13.69%
decreased by 0.63%
1 Week
14.12%
decreased by 0.20%
1 Month
15.53%
increased by 1.21%
Analysis last updated: Friday, July 17, 2026 at 04:03 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 17, 2026Model Insight
Volatility shocks decay with a half-life of 30 trading days, meaning a shock loses half its impact after approximately 30 days.
μ
MEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0416 | 10.93*** |
α ARCH Response to squared shocks | 0.2163 | 52.39*** |
β GARCH Volatility persistence | 0.7608 | 279.49*** |
Persistence:
0.977
Half-life:
30 days
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