V-Lab
Chegg Inc GJR-GARCH Volatility Analysis
Volatility prediction for Monday, October 5th, 2026
1 Day
68.11%
increased by 11.86%
1 Week
75.01%
increased by 18.76%
1 Month
87.95%
increased by 31.70%
Analysis last updated: Friday, October 2, 2026 at 11:23 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 13, 2013 to Oct 2, 2026Model Insight
Volatility shocks decay with a half-life of 6 trading days, meaning a shock loses half its impact after approximately 6 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 6-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 4.0905 | 3.22*** |
| αARCH | 0.5384 | 2.04** |
| βGARCH | 0.4988 | 6.27*** |
| γleverage | -0.2824 | -0.83 |
0.896
Persistence6d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 4.0905 | 3.22*** |
α ARCH Response to squared shocks | 0.5384 | 2.04** |
β GARCH Volatility persistence | 0.4988 | 6.27*** |
γ leverage Additional response to negative shocks | -0.2824 | -0.83 |
Persistence:
0.896
Half-life:
6 days
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