V-Lab
CBOE VIX Tail Hedge Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, August 21st, 2026
1 Day
10.89%
increased by 0.85%
1 Week
11.13%
increased by 1.09%
1 Month
11.93%
increased by 1.89%
Analysis last updated: Friday, August 21, 2026 at 11:36 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 31, 2006 to Aug 14, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 234% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0179 | 19.01*** |
α ARCH Response to squared shocks | 0.0546 | 7.36*** |
β GARCH Volatility persistence | 0.8655 | 189.35*** |
γ leverage Additional response to negative shocks | 0.1280 | 11.47*** |
Persistence:
0.984
Half-life:
43 days
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