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V-Lab

CBOE Volatility Index MEM Volatility Analysis

Volatility prediction for Wednesday, September 9th, 2026

1 Day

75.84%

decreased by 3.58%

1 Week

82.01%

increased by 2.59%

1 Month

95.61%

increased by 16.19%

Analysis last updated: Wednesday, September 9, 2026 at 11:31 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOE Volatility Index MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1992 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 9 trading days, meaning a shock loses half its impact after approximately 9 days.

μ

MEM Model

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Shock decay: Shocks decay with a 9-day half-life
ParamValuet-stat
ωconst3.8587
4.64***
αARCH0.2613
9.78***
βGARCH0.6613
32.28***

0.923

Persistence

9d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

3.8587
4.64***
α

ARCH

Response to squared shocks

0.2613
9.78***
β

GARCH

Volatility persistence

0.6613
32.28***

Persistence:

0.923

Half-life:

9 days