V-Lab
Wealthfront Corp GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
76.34%
increased by 21.79%
1 Week
72.96%
increased by 18.41%
1 Month
69.47%
increased by 14.92%
Analysis last updated: Friday, September 11, 2026 at 11:36 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 12, 2025 to Sep 11, 2026Boundary Parameters
Model Insight
Volatility shocks decay with a half-life of 2 trading days, meaning a shock loses half its impact after approximately 2 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 2-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 1.95* |
| αARCH | 0.0115 | 0.25 |
| βGARCH | 0.4250 | 3.09*** |
| γleverage | 0.5809 | 0.74 |
0.727
Persistence2d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 1.95* |
α ARCH Response to squared shocks | 0.0115 | 0.25 |
β GARCH Volatility persistence | 0.4250 | 3.09*** |
γ leverage Additional response to negative shocks | 0.5809 | 0.74 |
Persistence:
0.727
Half-life:
2 days
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