S&P GSCI Cocoa Index GARCH Volatility Analysis
Volatility prediction for Thursday, July 16th, 2026
1 Day
68.37%
decreased by 1.10%
1 Week
68.24%
decreased by 1.23%
1 Month
67.70%
decreased by 1.77%
Analysis last updated: Wednesday, July 15, 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 10, 2026Model Insight
With persistence 0.997, volatility shocks have a half-life of 261 trading days (~1.0 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0124 | 11.86*** |
α ARCH Response to squared shocks | 0.0323 | 29.20*** |
β GARCH Volatility persistence | 0.9651 | 818.56*** |
Persistence:
0.997
Half-life:
261 days
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