FTSE 100 Implied Volatility Index 30 Days GARCH Volatility Analysis
Volatility prediction for Friday, October 23rd, 2026
1 Day
110.58%
decreased by 0.76%
1 Week
110.46%
decreased by 0.88%
1 Month
110.20%
decreased by 1.14%
Analysis last updated: Friday, October 23, 2026 at 09:08 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 2000 to Oct 22, 2026Boundary Parameters
Model Insight
Volatility shocks decay with a half-life of 6 trading days, meaning a shock loses half its impact after approximately 6 days.
σ
GARCH Model
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Shock decay: Shocks decay with a 6-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 4.48*** |
| αARCH | 0.1199 | 6.64*** |
| βGARCH | 0.7759 | 25.93*** |
0.896
Persistence6d
Half-lifeσ
GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 4.48*** |
α ARCH Response to squared shocks | 0.1199 | 6.64*** |
β GARCH Volatility persistence | 0.7759 | 25.93*** |
Persistence:
0.896
Half-life:
6 days
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