V-Lab
Siemens AG EGARCH Volatility Analysis
Volatility prediction for Friday, September 4th, 2026
1 Day
27.57%
increased by 0.25%
1 Week
27.70%
increased by 0.38%
1 Month
28.20%
increased by 0.88%
Analysis last updated: Friday, September 4, 2026 at 06:51 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Aug 28, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 104% more than equivalent positive returns.
σ
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0169 | 2.66*** |
α ARCH Response to squared shocks | 0.1104 | 7.26*** |
β GARCH Volatility persistence | 0.9891 | 314.69*** |
γ leverage Additional response to negative shocks | -0.0377 | -3.49*** |
Persistence:
0.989
Half-life:
63 days
Other EGARCH Analyses on International Equities