S&P GSCI Heating Oil Index AGARCH Volatility Analysis
Volatility prediction for Wednesday, July 15th, 2026
1 Day
57.14%
decreased by 3.01%
1 Week
56.63%
decreased by 3.52%
1 Month
54.73%
decreased by 5.42%
Analysis last updated: Tuesday, July 14, 2026 at 11:10 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 10, 2026Model Insight
The news-impact curve is shifted (γ = 0.15) so that negative returns raise next-day volatility more than positive returns of the same size. The gap is largest for small shocks and narrows for larger ones.
σ
AGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0793 | 32.46*** |
α ARCH Response to squared shocks | 0.0926 | 54.77*** |
β GARCH Volatility persistence | 0.8921 | 607.68*** |
γ leverage Additional response to negative shocks | 0.1461 | 5.83*** |
Persistence:
0.985
Half-life:
45 days
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