V-Lab
FT Wilshire 5000 Index Asy. MEM Volatility Analysis
Volatility prediction for Friday, July 17th, 2026
1 Day
11.54%
increased by 0.68%
1 Week
11.86%
increased by 1.00%
1 Month
12.88%
increased by 2.02%
Analysis last updated: Wednesday, September 2, 2026 at 04:38 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 31, 2009 to Jul 16, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 268% more than equivalent positive returns.
μ
AMEM Model
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Leverage: Negative returns increase volatility 268% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0323 | 6.72*** |
| αARCH | 0.0901 | 2.59*** |
| βGARCH | 0.7578 | 31.96*** |
| γleverage | 0.2416 | 5.43*** |
0.969
Persistence22d
Half-lifeμ
AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0323 | 6.72*** |
α ARCH Response to squared shocks | 0.0901 | 2.59*** |
β GARCH Volatility persistence | 0.7578 | 31.96*** |
γ leverage Additional response to negative shocks | 0.2416 | 5.43*** |
Persistence:
0.969
Half-life:
22 days
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