V-Lab
S&P GSCI Cotton Index MF2-GARCH Volatility Analysis
Volatility prediction for Friday, August 7th, 2026
1 Day
21.71%
decreased by 0.55%
1 Week
22.11%
decreased by 0.15%
1 Month
22.24%
decreased by 0.02%
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 2, 1990 to Jul 31, 2026Model Insight
Volatility shocks decay with a half-life of 3 trading days, meaning a shock loses half its impact after approximately 3 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 | 0.0631 | 15.67*** |
β GARCH Volatility persistence | 0.7382 | 24.91*** |
γ leverage Additional response to negative shocks | 0.0029 | 0.76 |
λ₁ tau intercept Baseline long-term coefficient | 0.0243 | 1.29 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0573 | 1.84* |
λ₃ tau persistence Long-term factor persistence | 0.9329 | 25.57*** |
Persistence:
0.803
Half-life:
3 days
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