V-Lab
HeidelbergCement AG Asy. Power MEM Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
30.95%
decreased by 1.56%
1 Week
31.01%
decreased by 1.50%
1 Month
31.21%
decreased by 1.30%
Analysis last updated: Saturday, August 15, 2026 at 08:15 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 4, 1990 to Aug 14, 2026Model Insight
This asset exhibits a modest leverage effect: negative returns increase next-day volatility 45% more than equivalent positive returns.
μ
APMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0853 | 24.31*** |
α ARCH Response to squared shocks | 0.1062 | 41.77*** |
β GARCH Volatility persistence | 0.8750 | 342.87*** |
γ leverage Additional response to negative shocks | 0.0979 | 13.04*** |
δ power Transformation power | 1.8737 | 50.27*** |
Persistence:
0.977
Half-life:
30 days
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