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V-Lab

Taiwan Stock Exchange Weighted Index Asy. MEM Volatility Analysis

Volatility prediction for Monday, October 19th, 2026

1 Day

25.75%

decreased by 1.72%

1 Week

25.39%

decreased by 2.08%

1 Month

24.20%

decreased by 3.27%

Analysis last updated: Friday, October 16, 2026 at 07:06 AM UTC

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Date Range:

from

10/16/2024

to

10/16/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Taiwan Stock Exchange Weighted Index AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 31, 1993 to Oct 16, 2026

Model Insight

Volatility shocks decay with a half-life of 20 trading days, meaning a shock loses half its impact after approximately 20 days.

μ

AMEM Model

Tap to view equation

Shock decay: Shocks decay with a 20-day half-life
ParamValuet-stat
ωconst0.0520
1.66*
αARCH0.0797
1.35
βGARCH0.8361
20.33***
γleverage0.1001
1.24

0.966

Persistence

20d

Half-life
μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0520
1.66*
α

ARCH

Response to squared shocks

0.0797
1.35
β

GARCH

Volatility persistence

0.8361
20.33***
γ

leverage

Additional response to negative shocks

0.1001
1.24

Persistence:

0.966

Half-life:

20 days