V-Lab
CBOE VIX Indicative Ask Index GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
107.87%
decreased by 6.34%
1 Week
109.09%
decreased by 5.12%
1 Month
111.74%
decreased by 2.47%
Analysis last updated: Monday, September 14, 2026 at 03:12 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 18, 2009 to Sep 11, 2026Boundary Parameters
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
GJR-GARCH Model
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Inverse leverage: volatility responds almost entirely to positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 3.99*** |
| αARCH | 0.2174 | 3.63*** |
| βGARCH | 0.7955 | 33.13*** |
| γleverage | -0.2174 | -3.73*** |
0.904
Persistence7d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 3.99*** |
α ARCH Response to squared shocks | 0.2174 | 3.63*** |
β GARCH Volatility persistence | 0.7955 | 33.13*** |
γ leverage Additional response to negative shocks | -0.2174 | -3.73*** |
Persistence:
0.904
Half-life:
7 days
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