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BOYD GROUP SERVICES INC GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

147.63%

increased by 106.21%

1 Week

109.09%

increased by 67.67%

1 Month

73.95%

increased by 32.53%

Analysis last updated: Friday, September 11, 2026 at 11:46 PM UTC

Date Range:

from

to

6M ·

All

graph of BOYD GROUP SERVICES INC GJR-GARCH

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
Boundary Parameters

Model Insight

Volatility shocks decay with a half-life of 1 trading day, meaning a shock loses half its impact after approximately 1 day.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 1-day half-life
ParamValuet-stat
ωconst5.0000
1.77*
αARCH0.7544
1.06
βGARCH0.2082
0.83
γleverage-0.7097
-0.97

0.608

Persistence

1d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
1.77*
α

ARCH

Response to squared shocks

0.7544
1.06
β

GARCH

Volatility persistence

0.2082
0.83
γ

leverage

Additional response to negative shocks

-0.7097
-0.97

Persistence:

0.608

Half-life:

1 days