V-Lab
S&P Asia 50 CME GJR-GARCH Volatility Analysis
Volatility prediction for Friday, September 25th, 2026
1 Day
23.23%
decreased by 0.58%
1 Week
23.24%
decreased by 0.57%
1 Month
23.29%
decreased by 0.52%
Analysis last updated: Friday, September 25, 2026 at 09:00 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1998 to Sep 24, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 265% more than equivalent positive returns.
σ
GJR-GARCH Model
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Leverage: Negative returns increase volatility 265% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0232 | 5.08*** |
| αARCH | 0.0294 | 3.38*** |
| βGARCH | 0.9212 | 139.81*** |
| γleverage | 0.0781 | 4.51*** |
0.990
Persistence67d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0232 | 5.08*** |
α ARCH Response to squared shocks | 0.0294 | 3.38*** |
β GARCH Volatility persistence | 0.9212 | 139.81*** |
γ leverage Additional response to negative shocks | 0.0781 | 4.51*** |
Persistence:
0.990
Half-life:
67 days
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