Wilshire 5000 Total Market Index MEM Volatility Analysis
Volatility prediction for Monday, November 9th, 2026
1 Day
26.55%
decreased by 4.02%
1 Week
26.25%
decreased by 4.32%
1 Month
25.20%
decreased by 5.37%
Analysis last updated: Saturday, November 7, 2026 at 05:03 AM UTC
Press Delete or Backspace to remove this series.
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 31, 2009 to Nov 6, 2026Model Insight
Volatility shocks decay with a half-life of 28 trading days, meaning a shock loses half its impact after approximately 28 days.
μ
MEM Model
Tap to view equation
Shock decay: Shocks decay with a 28-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0367 | 3.10*** |
| αARCH | 0.2918 | 11.20*** |
| βGARCH | 0.6836 | 37.61*** |
0.975
Persistence28d
Half-lifeμ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0367 | 3.10*** |
α ARCH Response to squared shocks | 0.2918 | 11.20*** |
β GARCH Volatility persistence | 0.6836 | 37.61*** |
Persistence:
0.975
Half-life:
28 days
Other Wilshire 5000 Total Market Index Analyses
Other MEM Analyses on Equity Indices