V-Lab
S&P GSCI Industrial Metals Spot Index MF2-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
17.01%
decreased by 0.50%
1 Week
17.04%
decreased by 0.47%
1 Month
17.12%
decreased by 0.39%
Analysis last updated: Saturday, September 19, 2026 at 12:03 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 18, 2026Stationarity Enforced
Model Insight
Volatility shocks decay with a half-life of 15 trading days, meaning a shock loses half its impact after approximately 15 days.
σ
MF2-GARCH Model
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Shock decay: Shocks decay with a 15-day half-life
| Param | Value | t-stat |
|---|---|---|
| mwindow | 116 | |
| αARCH | 0.0491 | 5.32*** |
| βGARCH | 0.9001 | 66.93*** |
| γleverage | 0.0109 | 1.03 |
| λ₁tau intercept | 0.0109 | 1.25 |
| λ₂forecast adj. | 0.0789 | 1.73* |
| λ₃tau persistence | 0.9132 | 18.10*** |
0.955
Persistence15d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 116 | |
α ARCH Response to squared shocks | 0.0491 | 5.32*** |
β GARCH Volatility persistence | 0.9001 | 66.93*** |
γ leverage Additional response to negative shocks | 0.0109 | 1.03 |
λ₁ tau intercept Baseline long-term coefficient | 0.0109 | 1.25 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0789 | 1.73* |
λ₃ tau persistence Long-term factor persistence | 0.9132 | 18.10*** |
Persistence:
0.955
Half-life:
15 days
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