CBOE Google Volatility Index EGARCH Volatility Analysis
Volatility prediction for Monday, October 12th, 2026
1 Day
99.93%
decreased by 0.58%
1 Week
112.16%
increased by 11.65%
1 Month
118.14%
increased by 17.63%
Analysis last updated: Monday, October 12, 2026 at 11:38 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 7, 2011 to Oct 9, 2026Model Insight
Volatility shocks decay with a half-life of 1 trading day, meaning a shock loses half its impact after approximately 1 day.
σ
EGARCH Model
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Shock decay: Shocks decay with a 1-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 2.0045 | 4.20*** |
| αARCH | 0.3842 | 6.20*** |
| βGARCH | 0.5046 | 4.30*** |
| γleverage | 0.0261 | 0.40 |
0.505
Persistence1d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.0045 | 4.20*** |
α ARCH Response to squared shocks | 0.3842 | 6.20*** |
β GARCH Volatility persistence | 0.5046 | 4.30*** |
γ leverage Additional response to negative shocks | 0.0261 | 0.40 |
Persistence:
0.505
Half-life:
1 days
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