Skip to main content
V-Lab

NASDAQ Composite Index GJR-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

16.43%

decreased by 0.66%

1 Week

16.61%

decreased by 0.48%

1 Month

17.27%

increased by 0.18%

Analysis last updated: Saturday, August 22, 2026 at 12:13 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of NASDAQ Composite Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 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

0.0310
23.68***
α

ARCH

Response to squared shocks

0.0265
10.95***
β

GARCH

Volatility persistence

0.8930
440.11***
γ

leverage

Additional response to negative shocks

0.1264
24.33***

Persistence:

0.983

Half-life:

40 days