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V-Lab

Xiandai Investment Co Ltd GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, August 25th, 2026

1 Day

21.44%

decreased by 0.22%

1 Week

21.86%

increased by 0.20%

1 Month

23.37%

increased by 1.71%

Analysis last updated: Tuesday, August 25, 2026 at 06:16 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Xiandai Investment Co Ltd GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 29, 1999 to Aug 21, 2026

Model Insight

With persistence 0.993, volatility shocks have a half-life of 96 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 4.49 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

6.8079
4.10***
α

ARCH

Response to squared shocks

0.0802
53.51***
β

GARCH

Volatility persistence

0.9928
582.29***
ν

DF

Student-t tail thickness

4.4949
17.79***

Persistence:

0.993

Half-life:

96 days