V-Lab
CBOT Corn GJR-GARCH Volatility Analysis
Volatility prediction for Friday, August 7th, 2026
1 Day
25.52%
decreased by 0.85%
1 Week
25.70%
decreased by 0.67%
1 Month
26.35%
decreased by 0.02%
Analysis last updated: Friday, August 7, 2026 at 05:14 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 17, 2000 to Jul 31, 2026Model Insight
This asset exhibits a modest leverage effect: negative returns increase next-day volatility 40% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0578 | 18.72*** |
α ARCH Response to squared shocks | 0.0624 | 17.57*** |
β GARCH Volatility persistence | 0.9100 | 373.09*** |
γ leverage Additional response to negative shocks | 0.0250 | 3.40*** |
Persistence:
0.985
Half-life:
45 days
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