V-Lab
Nissui Corp GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, September 24th, 2026
1 Day
34.39%
increased by 5.42%
1 Week
34.66%
increased by 5.69%
1 Month
35.53%
increased by 6.56%
Analysis last updated: Saturday, September 19, 2026 at 11:17 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 24 trading days, meaning a shock loses half its impact after approximately 24 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 24-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1711 | 5.22*** |
| αARCH | 0.0649 | 5.05*** |
| βGARCH | 0.8754 | 63.51*** |
| γleverage | 0.0626 | 1.82* |
0.972
Persistence24d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1711 | 5.22*** |
α ARCH Response to squared shocks | 0.0649 | 5.05*** |
β GARCH Volatility persistence | 0.8754 | 63.51*** |
γ leverage Additional response to negative shocks | 0.0626 | 1.82* |
Persistence:
0.972
Half-life:
24 days
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