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V-Lab

CBOE NASDAQ-100 Volatility Index GARCH Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

88.37%

decreased by 4.52%

1 Week

89.28%

decreased by 3.61%

1 Month

91.70%

decreased by 1.19%

Analysis last updated: Tuesday, July 21, 2026 at 12:02 PM 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 Jul 17, 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

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.2362
22.80***
α

ARCH

Response to squared shocks

0.1086
28.43***
β

GARCH

Volatility persistence

0.8302
148.30***

Persistence:

0.939

Half-life:

11 days