Skip to main content
V-Lab

Taiwan Stock Exchange Weighted Index Asy. Power MEM Volatility Analysis

Volatility prediction for Monday, August 17th, 2026

1 Day

28.65%

decreased by 1.33%

1 Week

28.49%

decreased by 1.49%

1 Month

27.92%

decreased by 2.06%

Analysis last updated: Friday, August 14, 2026 at 07:04 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Taiwan Stock Exchange Weighted Index APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 31, 1993 to Aug 14, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 119% more than equivalent positive returns. The volatility power δ = 2.37 sits above 2, so large shocks influence volatility more than quadratically, dominating the response more than in standard GARCH.

μ

APMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0469
7.45***
α

ARCH

Response to squared shocks

0.1257
16.92***
β

GARCH

Volatility persistence

0.8296
108.86***
γ

leverage

Additional response to negative shocks

0.1643
11.13***
δ

power

Transformation power

2.3658
18.34***

Persistence:

0.982

Half-life:

38 days