V-Lab
FTSE TWSE Taiwan 50 Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, August 14th, 2026
1 Day
35.28%
decreased by 1.37%
1 Week
34.90%
decreased by 1.75%
1 Month
33.48%
decreased by 3.17%
Analysis last updated: Friday, August 14, 2026 at 10:25 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 15, 2003 to Jun 18, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 221% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0303 | 20.05*** |
α ARCH Response to squared shocks | 0.0349 | 13.23*** |
β GARCH Volatility persistence | 0.9093 | 368.29*** |
γ leverage Additional response to negative shocks | 0.0772 | 13.35*** |
Persistence:
0.983
Half-life:
40 days
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