V-Lab
CBOE Realized Volatility Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, August 21st, 2026
1 Day
34.62%
decreased by 1.27%
1 Week
42.53%
increased by 6.64%
1 Month
47.41%
increased by 11.52%
Analysis last updated: Friday, August 21, 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 Aug 14, 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 | 3.4452 | 13.82*** |
α ARCH Response to squared shocks | 0.0200 | 2.45** |
β GARCH Volatility persistence | 0.2394 | 6.26*** |
γ leverage Additional response to negative shocks | 0.7600 | 7.53*** |
Persistence:
0.639
Half-life:
2 days
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