BOYD GROUP SERVICES INC GJR-GARCH Volatility Analysis
Volatility prediction for Monday, October 26th, 2026
1 Day
49.15%
decreased by 16.09%
1 Week
51.23%
decreased by 14.01%
1 Month
52.79%
decreased by 12.45%
Analysis last updated: Friday, October 23, 2026 at 10:59 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 30, 2025 to Oct 23, 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
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Shock decay: Shocks decay with a 2-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 3.8025 | 1.90* |
| αARCH | 0.6169 | 1.20 |
| βGARCH | 0.3263 | 1.47 |
| γleverage | -0.5592 | -1.06 |
0.664
Persistence2d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.8025 | 1.90* |
α ARCH Response to squared shocks | 0.6169 | 1.20 |
β GARCH Volatility persistence | 0.3263 | 1.47 |
γ leverage Additional response to negative shocks | -0.5592 | -1.06 |
Persistence:
0.664
Half-life:
2 days
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