V-Lab
Russell 1000 Value Index GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, August 26th, 2026
1 Day
10.53%
decreased by 0.34%
1 Week
10.85%
decreased by 0.02%
1 Month
11.89%
increased by 1.02%
Analysis last updated: Wednesday, August 26, 2026 at 12:05 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 12, 2000 to Aug 21, 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 | 0.0239 | 19.18*** |
α ARCH Response to squared shocks | 0.0032 | 1.28 |
β GARCH Volatility persistence | 0.8868 | 392.75*** |
γ leverage Additional response to negative shocks | 0.1746 | 30.66*** |
Persistence:
0.977
Half-life:
30 days
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