V-Lab
Russell 1000 Growth Index EGARCH Volatility Analysis
Volatility prediction for Monday, August 10th, 2026
1 Day
25.15%
decreased by 0.86%
1 Week
24.86%
decreased by 1.15%
1 Month
23.89%
decreased by 2.12%
Analysis last updated: Saturday, August 8, 2026 at 12:04 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 12, 2000 to Aug 7, 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
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0108 | 3.34*** |
α ARCH Response to squared shocks | 0.1497 | 26.93*** |
β GARCH Volatility persistence | 0.9750 | 785.06*** |
γ leverage Additional response to negative shocks | -0.1243 | -24.09*** |
Persistence:
0.975
Half-life:
27 days
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