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V-Lab

Nikkei 225 Asy. MEM Volatility Analysis

Volatility prediction for Wednesday, July 22nd, 2026

1 Day

49.47%

decreased by 3.65%

1 Week

48.37%

decreased by 4.75%

1 Month

44.54%

decreased by 8.58%

Analysis last updated: Tuesday, July 21, 2026 at 07:02 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Nikkei 225 AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 3, 1990 to Jul 17, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 115% more than equivalent positive returns.

μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0648
37.33***
α

ARCH

Response to squared shocks

0.1246
34.34***
β

GARCH

Volatility persistence

0.7743
276.14***
γ

leverage

Additional response to negative shocks

0.1436
20.08***

Persistence:

0.971

Half-life:

23 days