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V-Lab
V-Lab

CBOT Corn GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

24.66%

decreased by 0.72%

1 Week

24.87%

decreased by 0.51%

1 Month

25.61%

increased by 0.23%

Analysis last updated: Saturday, September 19, 2026 at 04:05 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOT Corn GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 17, 2000 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 46 trading days, meaning a shock loses half its impact after approximately 46 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 46-day half-life
ParamValuet-stat
ωconst0.0569
4.65***
αARCH0.0608
4.35***
βGARCH0.9117
94.14***
γleverage0.0251
0.87

0.985

Persistence

46d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0569
4.65***
α

ARCH

Response to squared shocks

0.0608
4.35***
β

GARCH

Volatility persistence

0.9117
94.14***
γ

leverage

Additional response to negative shocks

0.0251
0.87

Persistence:

0.985

Half-life:

46 days