V-Lab
Leonardo SpA MEM Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
38.16%
decreased by 0.91%
1 Week
38.48%
decreased by 0.59%
1 Month
39.34%
increased by 0.27%
Analysis last updated: Wednesday, August 5, 2026 at 07:17 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 22, 1992 to Jul 31, 2026Model Insight
Volatility shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days.
μ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.4017 | 5.05*** |
α ARCH Response to squared shocks | 0.1749 | 10.17*** |
β GARCH Volatility persistence | 0.7645 | 66.89*** |
Persistence:
0.939
Half-life:
11 days
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