V-Lab
NY Harbor ULSD Heating Oil GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
45.55%
decreased by 1.99%
1 Week
45.51%
decreased by 2.03%
1 Month
45.39%
decreased by 2.15%
Analysis last updated: Saturday, September 19, 2026 at 04:08 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 4, 2000 to Sep 18, 2026Model Insight
With persistence 0.990, volatility shocks have a half-life of 71 trading days (~0.3 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 0.990, shock half-life ~71 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0734 | 5.03*** |
| αARCH | 0.0919 | 4.58*** |
| βGARCH | 0.8971 | 79.65*** |
| γleverage | 0.0027 | 0.09 |
0.990
Persistence71d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0734 | 5.03*** |
α ARCH Response to squared shocks | 0.0919 | 4.58*** |
β GARCH Volatility persistence | 0.8971 | 79.65*** |
γ leverage Additional response to negative shocks | 0.0027 | 0.09 |
Persistence:
0.990
Half-life:
71 days
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