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V-Lab

Russell 1000 Value Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, July 17th, 2026

1 Day

10.85%

decreased by 0.34%

1 Week

11.15%

decreased by 0.04%

1 Month

12.12%

increased by 0.93%

Analysis last updated: Friday, July 17, 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 Jul 10, 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
19.16***
α

ARCH

Response to squared shocks

0.0033
1.31
β

GARCH

Volatility persistence

0.8868
392.20***
γ

leverage

Additional response to negative shocks

0.1746
30.62***

Persistence:

0.977

Half-life:

30 days