V-Lab
Taiwan Stock Exchange Weighted Index Asy. MEM Volatility Analysis
Volatility prediction for Monday, September 7th, 2026
1 Day
21.75%
decreased by 0.88%
1 Week
21.61%
decreased by 1.02%
1 Month
21.16%
decreased by 1.47%
Analysis last updated: Friday, September 4, 2026 at 07:14 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 31, 1993 to Sep 4, 2026Model 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
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0519 | 1.66* |
α ARCH Response to squared shocks | 0.0795 | 1.35 |
β GARCH Volatility persistence | 0.8362 | 20.31*** |
γ leverage Additional response to negative shocks | 0.1001 | 1.23 |
Persistence:
0.966
Half-life:
20 days
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