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Hevol Services Group Co Ltd GARCH Volatility Analysis

Volatility prediction for Tuesday, September 8th, 2026

1 Day

48.90%

decreased by 2.11%

1 Week

49.12%

decreased by 1.89%

1 Month

49.86%

decreased by 1.15%

Analysis last updated: Tuesday, September 8, 2026 at 08:16 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Hevol Services Group Co Ltd GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 12, 2019 to Aug 28, 2026

Model Insight

Volatility shocks decay with a half-life of 29 trading days, meaning a shock loses half its impact after approximately 29 days.

σ

GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 29-day half-life
ParamValuet-stat
ωconst0.2650
2.08**
αARCH0.1068
4.16***
βGARCH0.8699
30.85***

0.977

Persistence

29d

Half-life
σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.2650
2.08**
α

ARCH

Response to squared shocks

0.1068
4.16***
β

GARCH

Volatility persistence

0.8699
30.85***

Persistence:

0.977

Half-life:

29 days