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CBOE S&P 500 Left Tail Volatility Index MF2-GARCH Volatility Analysis

Volatility prediction for Thursday, October 1st, 2026

1 Day

149.56%

decreased by 6.89%

1 Week

166.07%

increased by 9.62%

1 Month

187.75%

increased by 31.30%

Analysis last updated: Thursday, October 1, 2026 at 11:30 AM UTC

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Date Range:

from

09/30/2024

to

09/30/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOE S&P 500 Left Tail Volatility Index MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 3, 2006 to Sep 25, 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

Tap to view equation

Shock decay: Shocks decay with a 3-day half-life
ParamValuet-stat
mwindow101
αARCH0.2541
7.22***
βGARCH0.5901
11.95***
γleverage-0.1032
-1.72*
λ₁tau intercept4.8845
0.81
λ₂forecast adj.0.1967
1.08
λ₃tau persistence0.7812
3.81***

0.793

Persistence

3d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

101
α

ARCH

Response to squared shocks

0.2541
7.22***
β

GARCH

Volatility persistence

0.5901
11.95***
γ

leverage

Additional response to negative shocks

-0.1032
-1.72*
λ₁

tau intercept

Baseline long-term coefficient

4.8845
0.81
λ₂

forecast adj.

Forecast performance sensitivity

0.1967
1.08
λ₃

tau persistence

Long-term factor persistence

0.7812
3.81***

Persistence:

0.793

Half-life:

3 days