V-Lab
COMEX Gold MF2-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
20.35%
decreased by 0.80%
1 Week
20.30%
decreased by 0.85%
1 Month
20.08%
decreased by 1.07%
Analysis last updated: Saturday, September 19, 2026 at 04:07 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 30, 2000 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 44 trading days, meaning a shock loses half its impact after approximately 44 days.
σ
MF2-GARCH Model
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Shock decay: Shocks decay with a 44-day half-life
| Param | Value | t-stat |
|---|---|---|
| mwindow | 126 | |
| αARCH | 0.0483 | 4.04*** |
| βGARCH | 0.9469 | 65.97*** |
| γleverage | -0.0219 | -1.50 |
| λ₁tau intercept | 0.6089 | 0.39 |
| λ₂forecast adj. | 0.5061 | 0.41 |
| λ₃tau persistence | 0.0000 | 0.00 |
0.984
Persistence44d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 126 | |
α ARCH Response to squared shocks | 0.0483 | 4.04*** |
β GARCH Volatility persistence | 0.9469 | 65.97*** |
γ leverage Additional response to negative shocks | -0.0219 | -1.50 |
λ₁ tau intercept Baseline long-term coefficient | 0.6089 | 0.39 |
λ₂ forecast adj. Forecast performance sensitivity | 0.5061 | 0.41 |
λ₃ tau persistence Long-term factor persistence | 0.0000 | 0.00 |
Persistence:
0.984
Half-life:
44 days
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