V-Lab
Obayashi Corp GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 28th, 2026
1 Day
26.82%
decreased by 1.23%
1 Week
27.68%
decreased by 0.37%
1 Month
30.28%
increased by 2.23%
Analysis last updated: Saturday, September 26, 2026 at 09:24 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 to Sep 25, 2026Model Insight
This asset exhibits a notable leverage effect: negative returns increase next-day volatility 89% more than equivalent positive returns.
σ
GJR-GARCH Model
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Leverage: Negative returns increase volatility 89% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1946 | 6.31*** |
| αARCH | 0.0797 | 5.22*** |
| βGARCH | 0.8507 | 65.33*** |
| γleverage | 0.0705 | 2.15** |
0.966
Persistence20d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1946 | 6.31*** |
α ARCH Response to squared shocks | 0.0797 | 5.22*** |
β GARCH Volatility persistence | 0.8507 | 65.33*** |
γ leverage Additional response to negative shocks | 0.0705 | 2.15** |
Persistence:
0.966
Half-life:
20 days
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