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V-Lab

NASDAQ Composite Index Asy. MEM Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

19.39%

decreased by 0.42%

1 Week

19.44%

decreased by 0.37%

1 Month

19.59%

decreased by 0.22%

Analysis last updated: Tuesday, July 21, 2026 at 12:03 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of NASDAQ Composite Index AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Jul 17, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 84% more than equivalent positive returns.

μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0485
36.26***
α

ARCH

Response to squared shocks

0.1555
36.91***
β

GARCH

Volatility persistence

0.7495
254.15***
γ

leverage

Additional response to negative shocks

0.1301
18.36***

Persistence:

0.970

Half-life:

23 days