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V-Lab

S&P GSCI Agricultural Spot Index MF2-GARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

16.51%

increased by 0.02%

1 Week

16.54%

increased by 0.05%

1 Month

16.56%

increased by 0.07%

Analysis last updated: Saturday, September 19, 2026 at 12:03 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P GSCI Agricultural Spot Index MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 30 trading days, meaning a shock loses half its impact after approximately 30 days.

σ

MF2-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 30-day half-life
ParamValuet-stat
mwindow61
αARCH0.0659
8.75***
βGARCH0.9183
101.15***
γleverage-0.0140
-1.61
λ₁tau intercept0.0013
1.03
λ₂forecast adj.0.0097
1.83*
λ₃tau persistence0.9893
164.06***

0.977

Persistence

30d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

61
α

ARCH

Response to squared shocks

0.0659
8.75***
β

GARCH

Volatility persistence

0.9183
101.15***
γ

leverage

Additional response to negative shocks

-0.0140
-1.61
λ₁

tau intercept

Baseline long-term coefficient

0.0013
1.03
λ₂

forecast adj.

Forecast performance sensitivity

0.0097
1.83*
λ₃

tau persistence

Long-term factor persistence

0.9893
164.06***

Persistence:

0.977

Half-life:

30 days