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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

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graph of S&P / ASX 200 Volatility Index MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 2008 to Sep 24, 2026
Boundary 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
ParamValuet-stat
mwindow51
αARCH0.1548
5.35***
βGARCH0.6166
11.12***
γleverage0.0014
0.02
λ₁tau intercept10.0000
0.73
λ₂forecast adj.0.1918
0.72
λ₃tau persistence0.5801
1.02

0.772

Persistence

3d

Half-life
σ

MF2-GARCH Model

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ParameterValuet-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