Skip to main content
V-Lab

Russell 1000 Value Index GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, August 26th, 2026

1 Day

10.53%

decreased by 0.34%

1 Week

10.85%

decreased by 0.02%

1 Month

11.89%

increased by 1.02%

Analysis last updated: Wednesday, August 26, 2026 at 12:05 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 Aug 21, 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

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0239
19.18***
α

ARCH

Response to squared shocks

0.0032
1.28
β

GARCH

Volatility persistence

0.8868
392.75***
γ

leverage

Additional response to negative shocks

0.1746
30.66***

Persistence:

0.977

Half-life:

30 days