Skip to main content
V-Lab
V-Lab

Hong Kong Hang Seng Index GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, October 20th, 2026

1 Day

17.79%

decreased by 0.53%

1 Week

18.05%

decreased by 0.27%

1 Month

18.94%

increased by 0.62%

Analysis last updated: Friday, October 16, 2026 at 09:09 AM UTC

Press Delete or Backspace to remove this series.
Date Range:

from

10/16/2024

to

10/16/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Hong Kong Hang Seng 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 Oct 16, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 183% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 183% more than positive returns
ParamValuet-stat
ωconst0.0414
4.98***
αARCH0.0410
3.31***
βGARCH0.9035
97.26***
γleverage0.0751
3.50***

0.982

Persistence

38d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0414
4.98***
α

ARCH

Response to squared shocks

0.0410
3.31***
β

GARCH

Volatility persistence

0.9035
97.26***
γ

leverage

Additional response to negative shocks

0.0751
3.50***

Persistence:

0.982

Half-life:

38 days