V-Lab
SandRidge Energy, Inc. GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
29.03%
decreased by 0.53%
1 Week
29.53%
decreased by 0.03%
1 Month
31.41%
increased by 1.85%
Analysis last updated: Saturday, September 12, 2026 at 12:29 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 4, 2016 to Sep 11, 2026Model Insight
With persistence 0.996, volatility shocks have a half-life of 187 trading days (~0.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
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High persistence: persistence 0.996, shock half-life ~187 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0709 | 1.40 |
| αARCH | 0.0354 | 2.16** |
| βGARCH | 0.9427 | 66.89*** |
| γleverage | 0.0364 | 1.09 |
0.996
Persistence187d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0709 | 1.40 |
α ARCH Response to squared shocks | 0.0354 | 2.16** |
β GARCH Volatility persistence | 0.9427 | 66.89*** |
γ leverage Additional response to negative shocks | 0.0364 | 1.09 |
Persistence:
0.996
Half-life:
187 days
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