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V-Lab

Shengfeng Development Ltd GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, October 12th, 2026

1 Day

130.88%

decreased by 19.22%

1 Week

132.27%

decreased by 17.83%

1 Month

137.28%

decreased by 12.82%

Analysis last updated: Saturday, October 10, 2026 at 12:49 AM UTC

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Date Range:

from

10/09/2024

to

10/09/2026

6M ·

1Y ·

2Y ·

All

graph of Shengfeng Development Ltd GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 31, 2023 to Oct 9, 2026

Model Insight

Volatility shocks decay with a half-life of 52 trading days, meaning a shock loses half its impact after approximately 52 days. Returns follow a Student-t distribution with v = 2.28 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 52-day half-lifev = 2.28 · fat tails
ParamValuet-stat
ωconst124.1286
1.47
αARCH0.1059
12.26***
βGARCH0.9868
124.26***
νDF2.2778
51.09***

0.987

Persistence

52d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

124.1286
1.47
α

ARCH

Response to squared shocks

0.1059
12.26***
β

GARCH

Volatility persistence

0.9868
124.26***
ν

DF

Student-t tail thickness

2.2778
51.09***

Persistence:

0.987

Half-life:

52 days