V-Lab
S&P/ASX 200 GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 31st, 2026
1 Day
10.58%
decreased by 0.28%
1 Week
10.78%
decreased by 0.08%
1 Month
11.45%
increased by 0.59%
Analysis last updated: Friday, August 28, 2026 at 07:02 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 29, 1992 to Aug 28, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0206 | 22.17*** |
α ARCH Response to squared shocks | 0.0134 | 6.76*** |
β GARCH Volatility persistence | 0.8944 | 423.50*** |
γ leverage Additional response to negative shocks | 0.1319 | 24.31*** |
Persistence:
0.974
Half-life:
26 days
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