V-Lab
FT Wilshire 5000 Index EGARCH Volatility Analysis
Volatility prediction for Friday, July 17th, 2026
1 Day
12.85%
increased by 0.41%
1 Week
13.05%
increased by 0.61%
1 Month
13.76%
increased by 1.32%
Analysis last updated: Wednesday, September 2, 2026 at 04:39 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Jul 16, 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
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Leverage: volatility responds almost entirely to negative shocks
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0042 | 0.52 |
| αARCH | 0.1570 | 9.95*** |
| βGARCH | 0.9721 | 218.50*** |
| γleverage | -0.1219 | -8.62*** |
0.972
Persistence24d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0042 | 0.52 |
α ARCH Response to squared shocks | 0.1570 | 9.95*** |
β GARCH Volatility persistence | 0.9721 | 218.50*** |
γ leverage Additional response to negative shocks | -0.1219 | -8.62*** |
Persistence:
0.972
Half-life:
24 days
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