V-Lab
FTSE MIB Index GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 7th, 2026
1 Day
13.94%
decreased by 0.40%
1 Week
14.28%
decreased by 0.06%
1 Month
15.45%
increased by 1.11%
Analysis last updated: Friday, September 4, 2026 at 04:03 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1998 to Sep 4, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 395% more than equivalent positive returns.
σ
GJR-GARCH Model
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Leverage: Negative returns increase volatility 395% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0301 | 5.62*** |
| αARCH | 0.0313 | 2.37** |
| βGARCH | 0.8927 | 102.72*** |
| γleverage | 0.1238 | 5.11*** |
0.986
Persistence49d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0301 | 5.62*** |
α ARCH Response to squared shocks | 0.0313 | 2.37** |
β GARCH Volatility persistence | 0.8927 | 102.72*** |
γ leverage Additional response to negative shocks | 0.1238 | 5.11*** |
Persistence:
0.986
Half-life:
49 days
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