V-Lab
NY Harbor ULSD Heating Oil GJR-GARCH Volatility Analysis
Volatility prediction for Friday, August 7th, 2026
1 Day
52.12%
decreased by 1.55%
1 Week
51.97%
decreased by 1.70%
1 Month
51.41%
decreased by 2.26%
Analysis last updated: Friday, August 7, 2026 at 05:15 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 4, 2000 to Jul 31, 2026Model Insight
With persistence 0.990, volatility shocks have a half-life of 70 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0744 | 20.18*** |
α ARCH Response to squared shocks | 0.0927 | 18.27*** |
β GARCH Volatility persistence | 0.8960 | 315.72*** |
γ leverage Additional response to negative shocks | 0.0030 | 0.37 |
Persistence:
0.990
Half-life:
70 days
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