V-Lab
Chegg Inc GJR-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
91.24%
decreased by 30.70%
1 Week
93.41%
decreased by 28.53%
1 Month
98.04%
decreased by 23.90%
Analysis last updated: Friday, July 24, 2026 at 10:24 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 13, 2013 to Jul 24, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 100% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 4.1183 | 12.89*** |
α ARCH Response to squared shocks | 0.5571 | 8.15*** |
β GARCH Volatility persistence | 0.4839 | 23.86*** |
γ leverage Additional response to negative shocks | -0.2783 | -3.12*** |
Persistence:
0.902
Half-life:
7 days
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