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Hong Kong Dollar GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, October 30th, 2026

1 Day

0.71%

decreased by 0.02%

1 Week

0.72%

decreased by 0.01%

1 Month

0.74%

increased by 0.01%

Analysis last updated: Thursday, October 29, 2026 at 07:09 PM UTC

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Date Range:

from

10/29/2024

to

10/29/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Hong Kong Dollar GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 30, 2003 to Oct 23, 2026

Model Insight

The estimated Student-t degrees of freedom v = 2.10 sit at the infinite-variance boundary (v → 2): the model is attributing extreme moves to heavy tails rather than to volatility, so the volatility scale is unreliable here. See the boundary-parameters flag.

𝑓

GAS-GARCH-T Model

Tap to view equation

Unreliable tails: v = 2.10 sits at the infinite-variance boundary
ParamValuet-stat
ωlong-run0.0194
2.00**
αscore0.1108
40.95***
βpersistence0.9990
2,026.37***
νDF2.0986
1,062.60***

0.999

Persistence

693d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

long-run

Long-run variance given a price move

0.0194
2.00**
α

score

Weight on the scaled score

0.1108
40.95***
β

persistence

Volatility persistence

0.9990
2,026.37***
ν

DF

Student-t tail thickness

2.0986
1,062.60***

Persistence:

0.999

Half-life:

693 days