BOYD GROUP SERVICES INC EGARCH Volatility Analysis
Volatility prediction for Monday, October 19th, 2026
1 Day
49.25%
decreased by 14.42%
1 Week
48.84%
decreased by 14.83%
1 Month
48.52%
decreased by 15.15%
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
EGARCH Model
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Shock decay: Shocks decay with a 2-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.7419 | 1.95* |
| αARCH | 0.4306 | 2.82*** |
| βGARCH | 0.6672 | 3.57*** |
| γleverage | 0.1597 | 1.06 |
0.667
Persistence2d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7419 | 1.95* |
α ARCH Response to squared shocks | 0.4306 | 2.82*** |
β GARCH Volatility persistence | 0.6672 | 3.57*** |
γ leverage Additional response to negative shocks | 0.1597 | 1.06 |
Persistence:
0.667
Half-life:
2 days
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