V-Lab
SAP SE MF2-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
37.66%
increased by 3.56%
1 Week
38.57%
increased by 4.47%
1 Month
40.73%
increased by 6.63%
Analysis last updated: Saturday, September 19, 2026 at 08:52 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 18, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 285% more than equivalent positive returns.
σ
MF2-GARCH Model
Tap to view equation
Leverage: Negative returns increase volatility 285% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| mwindow | 66 | |
| αARCH | 0.0496 | 3.35*** |
| βGARCH | 0.7812 | 31.46*** |
| γleverage | 0.1415 | 5.16*** |
| λ₁tau intercept | 0.0096 | 1.69* |
| λ₂forecast adj. | 0.0157 | 3.09*** |
| λ₃tau persistence | 0.9824 | 157.68*** |
0.902
Persistence7d
Half-lifeσ
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 66 | |
α ARCH Response to squared shocks | 0.0496 | 3.35*** |
β GARCH Volatility persistence | 0.7812 | 31.46*** |
γ leverage Additional response to negative shocks | 0.1415 | 5.16*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0096 | 1.69* |
λ₂ forecast adj. Forecast performance sensitivity | 0.0157 | 3.09*** |
λ₃ tau persistence Long-term factor persistence | 0.9824 | 157.68*** |
Persistence:
0.902
Half-life:
7 days
Other MF2-GARCH Analyses on International Equities