V-Lab
Shanghai Shenzhen CSI 300 Index MF2-GARCH Volatility Analysis
Volatility prediction for Monday, September 28th, 2026
1 Day
17.30%
increased by 1.95%
1 Week
16.48%
increased by 1.13%
1 Month
16.34%
increased by 0.99%
Analysis last updated: Friday, September 25, 2026 at 05:44 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 8, 2005 to Sep 24, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 182% more than equivalent positive returns.
σ
MF2-GARCH Model
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Leverage: Negative returns increase volatility 182% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| mwindow | 26 | |
| αARCH | 0.0430 | 1.72* |
| βGARCH | 0.6820 | 11.20*** |
| γleverage | 0.0784 | 2.38** |
| λ₁tau intercept | 0.0696 | 2.30** |
| λ₂forecast adj. | 0.2391 | 3.15*** |
| λ₃tau persistence | 0.7378 | 8.87*** |
0.764
Persistence3d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 26 | |
α ARCH Response to squared shocks | 0.0430 | 1.72* |
β GARCH Volatility persistence | 0.6820 | 11.20*** |
γ leverage Additional response to negative shocks | 0.0784 | 2.38** |
λ₁ tau intercept Baseline long-term coefficient | 0.0696 | 2.30** |
λ₂ forecast adj. Forecast performance sensitivity | 0.2391 | 3.15*** |
λ₃ tau persistence Long-term factor persistence | 0.7378 | 8.87*** |
Persistence:
0.764
Half-life:
3 days
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