Skip to main content
V-Lab
V-Lab

HSI Volatility Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 4th, 2026

1 Day

65.11%

decreased by 0.89%

1 Week

67.94%

increased by 1.94%

1 Month

74.29%

increased by 8.29%

Analysis last updated: Friday, September 4, 2026 at 11:27 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of HSI Volatility Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 16, 2010 to Aug 27, 2026

Model Insight

This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.

σ

GJR-GARCH Model

Tap to view equation

Inverse leverage: volatility responds almost entirely to positive returns
ParamValuet-stat
ωconst2.2068
3.02***
αARCH0.1414
4.25***
βGARCH0.8455
33.38***
γleverage-0.1396
-3.53***

0.917

Persistence

8d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.2068
3.02***
α

ARCH

Response to squared shocks

0.1414
4.25***
β

GARCH

Volatility persistence

0.8455
33.38***
γ

leverage

Additional response to negative shocks

-0.1396
-3.53***

Persistence:

0.917

Half-life:

8 days