V-Lab
S&P GSCI Zinc Index MF2-GARCH Volatility Analysis
Volatility prediction for Friday, August 7th, 2026
1 Day
21.01%
decreased by 0.23%
1 Week
21.36%
increased by 0.12%
1 Month
21.44%
increased by 0.20%
Analysis last updated: Thursday, August 6, 2026 at 11:04 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 7, 1991 to Jul 31, 2026Model Insight
Volatility shocks decay with a half-life of 2 trading days, meaning a shock loses half its impact after approximately 2 days.
σ
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 21 | |
α ARCH Response to squared shocks | 0.0824 | 10.11*** |
β GARCH Volatility persistence | 0.6575 | 24.93*** |
γ leverage Additional response to negative shocks | -0.0103 | -1.38 |
λ₁ tau intercept Baseline long-term coefficient | 0.0063 | 0.83 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0248 | 1.79* |
λ₃ tau persistence Long-term factor persistence | 0.9729 | 65.17*** |
Persistence:
0.735
Half-life:
2 days
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