V-Lab
CBOE Volatility Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, July 24th, 2026
1 Day
131.80%
increased by 24.03%
1 Week
126.57%
increased by 18.80%
1 Month
115.12%
increased by 7.35%
Analysis last updated: Friday, July 24, 2026 at 11:34 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 17, 2026Model 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
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 4.6936 | 19.86*** |
α ARCH Response to squared shocks | 0.2058 | 19.92*** |
β GARCH Volatility persistence | 0.7856 | 145.86*** |
γ leverage Additional response to negative shocks | -0.2058 | -19.39*** |
Persistence:
0.888
Half-life:
6 days
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