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V-Lab

HSI Volatility Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, July 24th, 2026

1 Day

65.71%

decreased by 1.01%

1 Week

67.62%

increased by 0.90%

1 Month

72.72%

increased by 6.00%

Analysis last updated: Friday, July 24, 2026 at 11:21 PM UTC

Date Range:

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to

6M ·

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2Y ·

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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 Nov 19, 2021

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

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.5007
10.51***
α

ARCH

Response to squared shocks

0.1194
15.79***
β

GARCH

Volatility persistence

0.8813
140.49***
γ

leverage

Additional response to negative shocks

-0.1139
-11.70***

Persistence:

0.944

Half-life:

12 days