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NY Harbor ULSD Heating Oil GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

45.89%

decreased by 1.80%

1 Week

45.88%

decreased by 1.81%

1 Month

45.85%

decreased by 1.84%

Analysis last updated: Saturday, September 19, 2026 at 04:08 AM UTC

Date Range:

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to

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10Y ·

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graph of NY Harbor ULSD Heating Oil GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 4, 2000 to Sep 18, 2026

Model 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.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.996, shock half-life ~156 daysv = 7.61 · fat tails
ParamValuet-stat
ωconst7.9837
1.18
αARCH0.0660
12.11***
βGARCH0.9956
278.64***
νDF7.6110
1.65*

0.996

Persistence

156d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-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