V-Lab
D.L.S.I. GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
24.84%
decreased by 1.08%
1 Week
27.20%
increased by 1.28%
1 Month
31.34%
increased by 5.42%
Analysis last updated: Saturday, September 19, 2026 at 08:07 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 26, 2006 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 5 trading days, meaning a shock loses half its impact after approximately 5 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 5-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.5648 | 3.89*** |
| αARCH | 0.1394 | 2.71*** |
| βGARCH | 0.7070 | 14.36*** |
| γleverage | 0.0700 | 0.76 |
0.881
Persistence5d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.5648 | 3.89*** |
α ARCH Response to squared shocks | 0.1394 | 2.71*** |
β GARCH Volatility persistence | 0.7070 | 14.36*** |
γ leverage Additional response to negative shocks | 0.0700 | 0.76 |
Persistence:
0.881
Half-life:
5 days
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