V-Lab
FTSE 100 Implied Volatility Index 30 Days EGARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
109.94%
decreased by 6.49%
1 Week
109.67%
decreased by 6.76%
1 Month
108.98%
decreased by 7.45%
Analysis last updated: Saturday, September 12, 2026 at 12:50 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 2000 to Sep 10, 2026Model Insight
This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.
σ
EGARCH Model
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Inverse leverage: volatility responds almost entirely to positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.2550 | 3.99*** |
| αARCH | 0.1313 | 2.32** |
| βGARCH | 0.9334 | 66.08*** |
| γleverage | 0.1198 | 2.30** |
0.933
Persistence10d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2550 | 3.99*** |
α ARCH Response to squared shocks | 0.1313 | 2.32** |
β GARCH Volatility persistence | 0.9334 | 66.08*** |
γ leverage Additional response to negative shocks | 0.1198 | 2.30** |
Persistence:
0.933
Half-life:
10 days
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