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V-Lab

Russell 1000 Value Index GARCH Volatility Analysis

Volatility prediction for Wednesday, September 30th, 2026

1 Day

10.41%

decreased by 0.24%

1 Week

10.75%

increased by 0.10%

1 Month

11.87%

increased by 1.22%

Analysis last updated: Wednesday, September 30, 2026 at 12:04 AM UTC

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Date Range:

from

09/29/2024

to

09/29/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Russell 1000 Value Index GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 12, 2000 to Sep 25, 2026

Model Insight

Volatility shocks decay with a half-life of 32 trading days, meaning a shock loses half its impact after approximately 32 days.

σ

GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 32-day half-life
ParamValuet-stat
ωconst0.0238
5.29***
αARCH0.1141
8.80***
βGARCH0.8647
64.92***

0.979

Persistence

32d

Half-life
σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0238
5.29***
α

ARCH

Response to squared shocks

0.1141
8.80***
β

GARCH

Volatility persistence

0.8647
64.92***

Persistence:

0.979

Half-life:

32 days