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V-Lab

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

Volatility prediction for Monday, September 21st, 2026

1 Day

13.28%

decreased by 0.29%

1 Week

13.34%

decreased by 0.23%

1 Month

13.55%

decreased by 0.02%

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 Lead Spot Index MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 6, 1995 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 3 trading days, meaning a shock loses half its impact after approximately 3 days.

σ

MF2-GARCH Model

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Shock decay: Shocks decay with a 3-day half-life
ParamValuet-stat
mwindow21
αARCH0.0686
4.04***
βGARCH0.6865
13.04***
γleverage0.0261
1.29
λ₁tau intercept0.0046
1.87*
λ₂forecast adj.0.0262
5.48***
λ₃tau persistence0.9723
187.77***

0.768

Persistence

3d

Half-life
σ

MF2-GARCH Model

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ParameterValuet-statistic
m

window

Rolling window length

21
α

ARCH

Response to squared shocks

0.0686
4.04***
β

GARCH

Volatility persistence

0.6865
13.04***
γ

leverage

Additional response to negative shocks

0.0261
1.29
λ₁

tau intercept

Baseline long-term coefficient

0.0046
1.87*
λ₂

forecast adj.

Forecast performance sensitivity

0.0262
5.48***
λ₃

tau persistence

Long-term factor persistence

0.9723
187.77***

Persistence:

0.768

Half-life:

3 days