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V-Lab

S&P GSCI Cocoa Index MF2-GARCH Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

70.02%

decreased by 1.45%

1 Week

69.92%

decreased by 1.55%

1 Month

68.74%

decreased by 2.73%

Analysis last updated: Monday, July 20, 2026 at 11:08 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P GSCI Cocoa 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 Jul 17, 2026

Model Insight

This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 235% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets.

σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

101
α

ARCH

Response to squared shocks

0.0416
24.38***
β

GARCH

Volatility persistence

0.9441
405.70***
γ

leverage

Additional response to negative shocks

-0.0291
-17.94***
λ₁

tau intercept

Baseline long-term coefficient

0.3323
4.99***
λ₂

forecast adj.

Forecast performance sensitivity

0.9244
16.75***
λ₃

tau persistence

Long-term factor persistence

0.0000
0.00

Persistence:

0.971

Half-life:

24 days