V-Lab
Siemens AG MF2-GARCH Volatility Analysis
Volatility prediction for Thursday, September 10th, 2026
1 Day
32.12%
increased by 3.19%
1 Week
32.16%
increased by 3.23%
1 Month
31.99%
increased by 3.06%
Analysis last updated: Thursday, September 10, 2026 at 07:05 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 4, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
MF2-GARCH Model
Tap to view equation
Leverage: volatility responds almost entirely to negative shocks
| Param | Value | t-stat |
|---|---|---|
| mwindow | 56 | |
| αARCH | 0.0186 | 2.70*** |
| βGARCH | 0.8693 | 57.64*** |
| γleverage | 0.0815 | 6.10*** |
| λ₁tau intercept | 0.0093 | 1.69* |
| λ₂forecast adj. | 0.0252 | 2.89*** |
| λ₃tau persistence | 0.9719 | 101.48*** |
0.929
Persistence9d
Half-lifeσ
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 56 | |
α ARCH Response to squared shocks | 0.0186 | 2.70*** |
β GARCH Volatility persistence | 0.8693 | 57.64*** |
γ leverage Additional response to negative shocks | 0.0815 | 6.10*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0093 | 1.69* |
λ₂ forecast adj. Forecast performance sensitivity | 0.0252 | 2.89*** |
λ₃ tau persistence Long-term factor persistence | 0.9719 | 101.48*** |
Persistence:
0.929
Half-life:
9 days
Other MF2-GARCH Analyses on International Equities