V-Lab
FTSE 100 Index Asy. MEM Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
12.18%
increased by 1.80%
1 Week
12.34%
increased by 1.96%
1 Month
12.86%
increased by 2.48%
Analysis last updated: Friday, September 18, 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 18, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 132% more than equivalent positive returns.
μ
AMEM Model
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Leverage: Negative returns increase volatility 132% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0231 | 6.33*** |
| αARCH | 0.1020 | 7.33*** |
| βGARCH | 0.8051 | 78.23*** |
| γleverage | 0.1344 | 5.03*** |
0.974
Persistence27d
Half-lifeμ
AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0231 | 6.33*** |
α ARCH Response to squared shocks | 0.1020 | 7.33*** |
β GARCH Volatility persistence | 0.8051 | 78.23*** |
γ leverage Additional response to negative shocks | 0.1344 | 5.03*** |
Persistence:
0.974
Half-life:
27 days
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