V-Lab
Nissui Corp EGARCH Volatility Analysis
Volatility prediction for Thursday, September 10th, 2026
1 Day
30.88%
increased by 0.68%
1 Week
31.50%
increased by 1.30%
1 Month
33.61%
increased by 3.41%
Analysis last updated: Thursday, September 10, 2026 at 07:47 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 20 trading days, meaning a shock loses half its impact after approximately 20 days.
σ
EGARCH Model
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Shock decay: Shocks decay with a 20-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0657 | 4.87*** |
| αARCH | 0.1904 | 8.59*** |
| βGARCH | 0.9659 | 140.44*** |
| γleverage | -0.0360 | -1.83* |
0.966
Persistence20d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0657 | 4.87*** |
α ARCH Response to squared shocks | 0.1904 | 8.59*** |
β GARCH Volatility persistence | 0.9659 | 140.44*** |
γ leverage Additional response to negative shocks | -0.0360 | -1.83* |
Persistence:
0.966
Half-life:
20 days
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