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V-Lab

SMI Volatility Index EGARCH Volatility Analysis

Volatility prediction for Friday, August 7th, 2026

1 Day

62.36%

decreased by 2.38%

1 Week

64.46%

decreased by 0.28%

1 Month

70.93%

increased by 6.19%

Analysis last updated: Friday, August 7, 2026 at 08:39 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of SMI Volatility Index EGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 4, 1999 to May 13, 2026

Model Insight

This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.

σ

EGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1851
14.58***
α

ARCH

Response to squared shocks

0.1360
24.59***
β

GARCH

Volatility persistence

0.9450
330.29***
γ

leverage

Additional response to negative shocks

0.1228
24.18***

Persistence:

0.945

Half-life:

12 days