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CBOE NASDAQ-100 Volatility Index GARCH Volatility Analysis

Volatility prediction for Wednesday, September 23rd, 2026

1 Day

90.82%

decreased by 5.18%

1 Week

91.41%

decreased by 4.59%

1 Month

92.99%

decreased by 3.01%

Analysis last updated: Wednesday, September 23, 2026 at 11:40 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOE NASDAQ-100 Volatility Index GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 23, 2001 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days.

σ

GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 11-day half-life
ParamValuet-stat
ωconst2.2308
5.70***
αARCH0.1080
7.12***
βGARCH0.8308
37.25***

0.939

Persistence

11d

Half-life
σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.2308
5.70***
α

ARCH

Response to squared shocks

0.1080
7.12***
β

GARCH

Volatility persistence

0.8308
37.25***

Persistence:

0.939

Half-life:

11 days