V-Lab
BOYD GROUP SERVICES INC GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
39.84%
increased by 0.45%
1 Week
49.87%
increased by 10.48%
1 Month
56.09%
increased by 16.70%
Analysis last updated: Friday, August 21, 2026 at 10:28 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 30, 2025 to Aug 21, 2026Model Insight
This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 4.7739 | 6.73*** |
α ARCH Response to squared shocks | 0.9346 | 4.62*** |
β GARCH Volatility persistence | 0.1614 | 2.60*** |
γ leverage Additional response to negative shocks | -0.9022 | -4.37*** |
Persistence:
0.645
Half-life:
2 days
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