V-Lab
Varopakorn Co GJR-GARCH Volatility Analysis
Volatility prediction for Friday, July 24th, 2026
1 Day
37.47%
decreased by 0.22%
1 Week
41.42%
increased by 3.73%
1 Month
51.66%
increased by 13.97%
Analysis last updated: Friday, July 24, 2026 at 08:11 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 17, 1992 to Jul 17, 2026Model Insight
Volatility shocks decay with a half-life of 16 trading days, meaning a shock loses half its impact after approximately 16 days.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8805 | 16.64*** |
α ARCH Response to squared shocks | 0.1447 | 16.87*** |
β GARCH Volatility persistence | 0.8252 | 131.94*** |
γ leverage Additional response to negative shocks | -0.0240 | -1.75* |
Persistence:
0.958
Half-life:
16 days
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