V-Lab
FT Wilshire 5000 Index MEM Volatility Analysis
Volatility prediction for Friday, July 17th, 2026
1 Day
10.78%
increased by 0.23%
1 Week
11.32%
increased by 0.77%
1 Month
13.01%
increased by 2.46%
Analysis last updated: Sunday, July 19, 2026 at 07:03 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 31, 2009 to Jan 2, 2026Model Insight
Volatility shocks decay with a half-life of 29 trading days, meaning a shock loses half its impact after approximately 29 days.
μ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0351 | 11.88*** |
α ARCH Response to squared shocks | 0.2907 | 44.07*** |
β GARCH Volatility persistence | 0.6860 | 149.26*** |
Persistence:
0.977
Half-life:
29 days
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