V-Lab
FTSE 100 Index GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, September 10th, 2026
1 Day
11.85%
increased by 3.11%
1 Week
12.05%
increased by 3.31%
1 Month
12.70%
increased by 3.96%
Analysis last updated: Wednesday, September 9, 2026 at 05:03 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 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
GJR-GARCH Model
Tap to view equation
Leverage: volatility responds almost entirely to negative shocks
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0216 | 5.39*** |
| αARCH | 0.0152 | 2.18** |
| βGARCH | 0.8944 | 125.02*** |
| γleverage | 0.1370 | 6.79*** |
0.978
Persistence31d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0216 | 5.39*** |
α ARCH Response to squared shocks | 0.0152 | 2.18** |
β GARCH Volatility persistence | 0.8944 | 125.02*** |
γ leverage Additional response to negative shocks | 0.1370 | 6.79*** |
Persistence:
0.978
Half-life:
31 days
Other FTSE 100 Index Analyses
Other GJR-GARCH Analyses on Equity Indices