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CBOE IBM Volatility Index MF2-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 29th, 2026

1 Day

98.31%

decreased by 3.32%

1 Week

112.12%

increased by 10.49%

1 Month

120.89%

increased by 19.26%

Analysis last updated: Tuesday, September 29, 2026 at 11:37 AM UTC

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graph of CBOE IBM Volatility Index MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 7, 2011 to Sep 25, 2026

Model Insight

This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.

σ

MF2-GARCH Model

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Inverse leverage: volatility responds almost entirely to positive returns
ParamValuet-stat
mwindow126
αARCH0.4734
4.64***
βGARCH0.3843
4.45***
γleverage-0.4501
-4.45***
λ₁tau intercept10.0000
0.13
λ₂forecast adj.0.0000
0.00
λ₃tau persistence0.8359
0.61

0.633

Persistence

2d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

126
α

ARCH

Response to squared shocks

0.4734
4.64***
β

GARCH

Volatility persistence

0.3843
4.45***
γ

leverage

Additional response to negative shocks

-0.4501
-4.45***
λ₁

tau intercept

Baseline long-term coefficient

10.0000
0.13
λ₂

forecast adj.

Forecast performance sensitivity

0.0000
0.00
λ₃

tau persistence

Long-term factor persistence

0.8359
0.61

Persistence:

0.633

Half-life:

2 days