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V-Lab

FT Wilshire 5000 Index GARCH Volatility Analysis

Volatility prediction for Friday, July 17th, 2026

1 Day

11.45%

decreased by 0.24%

1 Week

11.68%

decreased by 0.01%

1 Month

12.47%

increased by 0.78%

Analysis last updated: Wednesday, September 2, 2026 at 04:38 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of FT Wilshire 5000 Index GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Jul 16, 2026

Model Insight

Volatility shocks decay with a half-life of 44 trading days, meaning a shock loses half its impact after approximately 44 days.

σ

GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 44-day half-life
ParamValuet-stat
ωconst0.0188
5.72***
αARCH0.1057
10.96***
βGARCH0.8787
93.57***

0.984

Persistence

44d

Half-life
σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0188
5.72***
α

ARCH

Response to squared shocks

0.1057
10.96***
β

GARCH

Volatility persistence

0.8787
93.57***

Persistence:

0.984

Half-life:

44 days