V-Lab
Shenzhen Stock Exchange Composite Index MF2-GARCH Volatility Analysis
Volatility prediction for Friday, September 18th, 2026
1 Day
22.67%
decreased by 0.65%
1 Week
24.67%
increased by 1.35%
1 Month
28.01%
increased by 4.69%
Analysis last updated: Friday, September 18, 2026 at 10:02 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 3, 1991 to Sep 10, 2026Model Insight
This asset exhibits a notable leverage effect: negative returns increase next-day volatility 68% more than equivalent positive returns.
σ
MF2-GARCH Model
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Leverage: Negative returns increase volatility 68% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| mwindow | 66 | |
| αARCH | 0.0883 | 4.47*** |
| βGARCH | 0.7450 | 28.21*** |
| γleverage | 0.0604 | 2.43** |
| λ₁tau intercept | 0.4784 | 3.02*** |
| λ₂forecast adj. | 0.8228 | 8.74*** |
| λ₃tau persistence | 0.0563 | 0.62 |
0.864
Persistence5d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 66 | |
α ARCH Response to squared shocks | 0.0883 | 4.47*** |
β GARCH Volatility persistence | 0.7450 | 28.21*** |
γ leverage Additional response to negative shocks | 0.0604 | 2.43** |
λ₁ tau intercept Baseline long-term coefficient | 0.4784 | 3.02*** |
λ₂ forecast adj. Forecast performance sensitivity | 0.8228 | 8.74*** |
λ₃ tau persistence Long-term factor persistence | 0.0563 | 0.62 |
Persistence:
0.864
Half-life:
5 days
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