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V-Lab

HSI Volatility Index GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

64.80%

increased by 0.90%

1 Week

68.39%

increased by 4.49%

1 Month

77.26%

increased by 13.36%

Analysis last updated: Saturday, September 12, 2026 at 12:48 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of HSI Volatility Index GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 16, 2010 to Sep 10, 2026

Model Insight

Volatility shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days.

σ

GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 11-day half-life
ParamValuet-stat
ωconst2.0532
2.80***
αARCH0.1006
4.96***
βGARCH0.8368
30.18***

0.937

Persistence

11d

Half-life
σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.0532
2.80***
α

ARCH

Response to squared shocks

0.1006
4.96***
β

GARCH

Volatility persistence

0.8368
30.18***

Persistence:

0.937

Half-life:

11 days