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V-Lab

Chicago SRW Wheat GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, October 12th, 2026

1 Day

29.46%

increased by 0.20%

1 Week

29.52%

increased by 0.26%

1 Month

29.71%

increased by 0.45%

Analysis last updated: Saturday, October 10, 2026 at 04:06 AM UTC

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Date Range:

from

10/09/2024

to

10/09/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Chicago SRW Wheat GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 17, 2000 to Oct 9, 2026

Model Insight

Volatility shocks decay with a half-life of 60 trading days, meaning a shock loses half its impact after approximately 60 days. Returns follow a Student-t distribution with v = 9.43 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 60-day half-lifev = 9.43 · fat tails
ParamValuet-stat
ωconst3.9890
2.47**
αARCH0.0470
6.51***
βGARCH0.9885
200.02***
νDF9.4273
0.79

0.989

Persistence

60d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

3.9890
2.47**
α

ARCH

Response to squared shocks

0.0470
6.51***
β

GARCH

Volatility persistence

0.9885
200.02***
ν

DF

Student-t tail thickness

9.4273
0.79

Persistence:

0.989

Half-life:

60 days