V-Lab
Vinpearl JSC GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, August 25th, 2026
1 Day
30.15%
decreased by 2.96%
1 Week
33.47%
increased by 0.36%
1 Month
39.77%
increased by 6.66%
Analysis last updated: Tuesday, August 25, 2026 at 08:40 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 21, 2008 to Aug 21, 2026Model Insight
Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8238 | 11.76*** |
α ARCH Response to squared shocks | 0.2655 | 11.69*** |
β GARCH Volatility persistence | 0.6395 | 43.51*** |
γ leverage Additional response to negative shocks | -0.0099 | -0.24 |
Persistence:
0.900
Half-life:
7 days
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