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Russell 1000 Value Index GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

10.95%

decreased by 0.37%

1 Week

11.24%

decreased by 0.08%

1 Month

12.18%

increased by 0.86%

Analysis last updated: Tuesday, September 15, 2026 at 12:04 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Russell 1000 Value Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 12, 2000 to Sep 11, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

GJR-GARCH Model

Tap to view equation

Leverage: volatility responds almost entirely to negative shocks
ParamValuet-stat
ωconst0.0238
4.79***
αARCH0.0033
0.33
βGARCH0.8871
98.43***
γleverage0.1742
7.66***

0.977

Persistence

30d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0238
4.79***
α

ARCH

Response to squared shocks

0.0033
0.33
β

GARCH

Volatility persistence

0.8871
98.43***
γ

leverage

Additional response to negative shocks

0.1742
7.66***

Persistence:

0.977

Half-life:

30 days