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BOYD GROUP SERVICES INC GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

68.10%

increased by 6.35%

1 Week

67.57%

increased by 5.82%

1 Month

65.63%

increased by 3.88%

Analysis last updated: Friday, September 11, 2026 at 11:47 PM UTC

Date Range:

from

to

6M ·

All

graph of BOYD GROUP SERVICES INC GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 30, 2025 to Sep 11, 2026

Model Insight

Volatility shocks decay with a half-life of 47 trading days, meaning a shock loses half its impact after approximately 47 days. Returns follow a Student-t distribution with v = 2.96 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 47-day half-lifev = 2.96 · fat tails
ParamValuet-stat
ωconst8.5747
1.56
αARCH0.0445
2.30**
βGARCH0.9854
73.05***
νDF2.9646
5.36***

0.985

Persistence

47d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

8.5747
1.56
α

ARCH

Response to squared shocks

0.0445
2.30**
β

GARCH

Volatility persistence

0.9854
73.05***
ν

DF

Student-t tail thickness

2.9646
5.36***

Persistence:

0.985

Half-life:

47 days