V-Lab
CBOE Realized Volatility Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, July 24th, 2026
1 Day
35.89%
decreased by 2.30%
1 Week
43.11%
increased by 4.92%
1 Month
47.62%
increased by 9.43%
Analysis last updated: Friday, July 24, 2026 at 11:30 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 1, 2012 to Jul 17, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.4644 | 13.80*** |
α ARCH Response to squared shocks | 0.0201 | 2.46** |
β GARCH Volatility persistence | 0.2372 | 6.17*** |
γ leverage Additional response to negative shocks | 0.7627 | 7.52*** |
Persistence:
0.639
Half-life:
2 days
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