V-Lab
Huron Consulting Group Inc GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
36.99%
decreased by 2.44%
1 Week
38.35%
decreased by 1.08%
1 Month
40.30%
increased by 0.87%
Analysis last updated: Friday, September 11, 2026 at 10:55 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 13, 2004 to Sep 11, 2026Model Insight
Volatility shocks decay with a half-life of 4 trading days, meaning a shock loses half its impact after approximately 4 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 4-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1805 | 3.90*** |
| αARCH | 0.1181 | 2.80*** |
| βGARCH | 0.6865 | 13.53*** |
| γleverage | 0.0448 | 0.79 |
0.827
Persistence4d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1805 | 3.90*** |
α ARCH Response to squared shocks | 0.1181 | 2.80*** |
β GARCH Volatility persistence | 0.6865 | 13.53*** |
γ leverage Additional response to negative shocks | 0.0448 | 0.79 |
Persistence:
0.827
Half-life:
4 days
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