V-Lab
S&P / ASX 200 Volatility Index MF2-GARCH Volatility Analysis
Volatility prediction for Friday, September 25th, 2026
1 Day
88.01%
increased by 6.00%
1 Week
90.72%
increased by 8.71%
1 Month
95.32%
increased by 13.31%
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 2, 2008 to Sep 24, 2026Boundary Parameters
Model Insight
Volatility shocks decay with a half-life of 3 trading days, meaning a shock loses half its impact after approximately 3 days.
σ
MF2-GARCH Model
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Shock decay: Shocks decay with a 3-day half-life
| Param | Value | t-stat |
|---|---|---|
| mwindow | 51 | |
| αARCH | 0.1548 | 5.35*** |
| βGARCH | 0.6166 | 11.12*** |
| γleverage | 0.0014 | 0.02 |
| λ₁tau intercept | 10.0000 | 0.73 |
| λ₂forecast adj. | 0.1918 | 0.72 |
| λ₃tau persistence | 0.5801 | 1.02 |
0.772
Persistence3d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 51 | |
α ARCH Response to squared shocks | 0.1548 | 5.35*** |
β GARCH Volatility persistence | 0.6166 | 11.12*** |
γ leverage Additional response to negative shocks | 0.0014 | 0.02 |
λ₁ tau intercept Baseline long-term coefficient | 10.0000 | 0.73 |
λ₂ forecast adj. Forecast performance sensitivity | 0.1918 | 0.72 |
λ₃ tau persistence Long-term factor persistence | 0.5801 | 1.02 |
Persistence:
0.772
Half-life:
3 days
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