V-Lab
Vietnam Ho Chi Minh Stock Index / VN-Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, July 24th, 2026
1 Day
29.65%
decreased by 0.94%
1 Week
29.28%
decreased by 1.31%
1 Month
28.00%
decreased by 2.59%
Analysis last updated: Friday, July 24, 2026 at 11:19 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 12, 2010 to Apr 29, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 103% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0466 | 13.97*** |
α ARCH Response to squared shocks | 0.0768 | 9.43*** |
β GARCH Volatility persistence | 0.8576 | 186.67*** |
γ leverage Additional response to negative shocks | 0.0790 | 5.67*** |
Persistence:
0.974
Half-life:
26 days
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