V-Lab
Russell 1000 Value Index EGARCH Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
10.97%
increased by 1.21%
1 Week
11.21%
increased by 1.45%
1 Month
12.07%
increased by 2.31%
Analysis last updated: Saturday, September 5, 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 Sep 4, 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 | 0.0028 | 0.22 |
α ARCH Response to squared shocks | 0.1471 | 7.78*** |
β GARCH Volatility persistence | 0.9746 | 171.56*** |
γ leverage Additional response to negative shocks | -0.1386 | -9.14*** |
Persistence:
0.975
Half-life:
27 days
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