V-Lab
Siemens AG Asy. Power MEM Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
22.77%
decreased by 1.62%
1 Week
21.70%
decreased by 2.69%
1 Month
18.56%
decreased by 5.83%
Analysis last updated: Saturday, August 15, 2026 at 07:49 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Aug 14, 2026Model Insight
This asset exhibits a modest leverage effect: negative returns increase next-day volatility 22% more than equivalent positive returns. The volatility power δ = 0.74 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
μ
APMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0263 | 28.90*** |
α ARCH Response to squared shocks | 0.1712 | 71.62*** |
β GARCH Volatility persistence | 0.8250 | 345.64*** |
γ leverage Additional response to negative shocks | 0.1340 | 22.05*** |
δ power Transformation power | 0.7407 | 18.43*** |
Persistence:
0.961
Half-life:
18 days
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