V-Lab
FTSE 100 Index GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, August 6th, 2026
1 Day
9.44%
decreased by 0.23%
1 Week
9.80%
increased by 0.13%
1 Month
10.95%
increased by 1.28%
Analysis last updated: Wednesday, August 5, 2026 at 05:02 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Jul 31, 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
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0219 | 21.59*** |
α ARCH Response to squared shocks | 0.0148 | 8.51*** |
β GARCH Volatility persistence | 0.8946 | 499.48*** |
γ leverage Additional response to negative shocks | 0.1370 | 27.18*** |
Persistence:
0.978
Half-life:
31 days
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