V-Lab
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
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 30, 2025 to Sep 11, 2026Boundary 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
| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 1.77* |
| αARCH | 0.7544 | 1.06 |
| βGARCH | 0.2082 | 0.83 |
| γleverage | -0.7097 | -0.97 |
0.608
Persistence1d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-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
Other BOYD GROUP SERVICES INC Analyses
Other GJR-GARCH Analyses on Equities