V-Lab
Lena Lighting SA MEM Volatility Analysis
Volatility prediction for Monday, August 10th, 2026
1 Day
19.53%
increased by 0.05%
1 Week
21.40%
increased by 1.92%
1 Month
26.40%
increased by 6.92%
Analysis last updated: Sunday, August 9, 2026 at 12:02 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 6, 2005 to Aug 7, 2026Model Insight
Volatility shocks decay with a half-life of 17 trading days, meaning a shock loses half its impact after approximately 17 days.
μ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2176 | 8.53*** |
α ARCH Response to squared shocks | 0.1775 | 25.69*** |
β GARCH Volatility persistence | 0.7834 | 170.53*** |
Persistence:
0.961
Half-life:
17 days
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