V-Lab
S&P GSCI All Cattle Spot Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, August 7th, 2026
1 Day
18.35%
increased by 1.67%
1 Week
18.28%
increased by 1.60%
1 Month
18.03%
increased by 1.35%
Analysis last updated: Thursday, August 6, 2026 at 11:03 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 7, 2002 to Jul 31, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0125 | 17.10*** |
α ARCH Response to squared shocks | 0.0132 | 8.12*** |
β GARCH Volatility persistence | 0.9449 | 618.39*** |
γ leverage Additional response to negative shocks | 0.0575 | 15.39*** |
Persistence:
0.987
Half-life:
52 days
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