V-Lab
NY Harbor ULSD Heating Oil GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
45.89%
1 Week
45.88%
1 Month
45.85%
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 0.996, volatility shocks have a half-life of 156 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 7.61 degrees of freedom, capturing fatter tails than a normal distribution.
GAS-GARCH-T Model
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| Param | Value | t-stat |
|---|---|---|
| ωconst | 7.9837 | 1.18 |
| αARCH | 0.0660 | 12.11*** |
| βGARCH | 0.9956 | 278.64*** |
| νDF | 7.6110 | 1.65* |
0.996
Persistence156d
Half-lifeGAS-GARCH-T Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 7.9837 | 1.18 |
α ARCH Response to squared shocks | 0.0660 | 12.11*** |
β GARCH Volatility persistence | 0.9956 | 278.64*** |
ν DF Student-t tail thickness | 7.6110 | 1.65* |
Persistence:
0.996
Half-life:
156 days
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