Skip to main content
V-Lab
V-Lab

FT Wilshire 5000 Index MEM Volatility Analysis

Volatility prediction for Friday, July 17th, 2026

1 Day

10.79%

increased by 0.23%

1 Week

11.34%

increased by 0.78%

1 Month

13.05%

increased by 2.49%

Analysis last updated: Wednesday, September 2, 2026 at 04:39 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of FT Wilshire 5000 Index MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 31, 2009 to Jul 16, 2026

Model 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
ParamValuet-stat
ωconst0.0361
3.08***
αARCH0.2908
11.12***
βGARCH0.6847
37.20***

0.975

Persistence

28d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0361
3.08***
α

ARCH

Response to squared shocks

0.2908
11.12***
β

GARCH

Volatility persistence

0.6847
37.20***

Persistence:

0.975

Half-life:

28 days