V-Lab
FTSE TWSE Taiwan 50 Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, July 24th, 2026
1 Day
39.77%
decreased by 1.83%
1 Week
39.28%
decreased by 2.32%
1 Month
37.49%
decreased by 4.11%
Analysis last updated: Friday, July 24, 2026 at 11:19 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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