BOYD GROUP SERVICES INC GJR-GARCH Volatility Analysis
Volatility prediction for Monday, October 19th, 2026
1 Day
52.19%
decreased by 21.28%
1 Week
53.76%
decreased by 19.71%
1 Month
55.12%
decreased by 18.35%
Analysis last updated: Friday, October 16, 2026 at 10:55 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 30, 2025 to Oct 16, 2026Model Insight
Volatility shocks decay with a half-life of 2 trading days, meaning a shock loses half its impact after approximately 2 days.
σ
GJR-GARCH Model
Tap to view equation
Shock decay: Shocks decay with a 2-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 3.6832 | 1.89* |
| αARCH | 0.6750 | 1.27 |
| βGARCH | 0.3326 | 1.51 |
| γleverage | -0.6147 | -1.13 |
0.700
Persistence2d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.6832 | 1.89* |
α ARCH Response to squared shocks | 0.6750 | 1.27 |
β GARCH Volatility persistence | 0.3326 | 1.51 |
γ leverage Additional response to negative shocks | -0.6147 | -1.13 |
Persistence:
0.700
Half-life:
2 days
Other BOYD GROUP SERVICES INC Analyses
Other GJR-GARCH Analyses on Equities