Skip to main content
V-Lab
V-Lab

CBOT Soybeans GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, October 5th, 2026

1 Day

19.28%

decreased by 0.56%

1 Week

19.38%

decreased by 0.46%

1 Month

19.76%

decreased by 0.08%

Analysis last updated: Saturday, October 3, 2026 at 04:12 AM UTC

Press Delete or Backspace to remove this series.
Date Range:

from

10/02/2024

to

10/02/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOT Soybeans GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 15, 2000 to Oct 2, 2026

Model Insight

Volatility shocks decay with a half-life of 63 trading days, meaning a shock loses half its impact after approximately 63 days. Returns follow a Student-t distribution with v = 6.49 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 63-day half-lifev = 6.49 · fat tails
ParamValuet-stat
ωconst2.1952
1.54
αARCH0.0519
7.10***
βGARCH0.9891
154.78***
νDF6.4871
1.25

0.989

Persistence

63d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.1952
1.54
α

ARCH

Response to squared shocks

0.0519
7.10***
β

GARCH

Volatility persistence

0.9891
154.78***
ν

DF

Student-t tail thickness

6.4871
1.25

Persistence:

0.989

Half-life:

63 days