V-Lab
Chegg Inc MF2-GARCH Volatility Analysis
Volatility prediction for Monday, October 5th, 2026
1 Day
101.26%
increased by 12.31%
1 Week
119.06%
increased by 30.11%
1 Month
131.14%
increased by 42.19%
Analysis last updated: Friday, October 2, 2026 at 11:25 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, 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
MF2-GARCH Model
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Shock decay: Shocks decay with a 2-day half-life
| Param | Value | t-stat |
|---|---|---|
| mwindow | 126 | |
| αARCH | 0.7598 | 3.31*** |
| βGARCH | 0.1561 | 2.24** |
| γleverage | -0.5000 | -1.91* |
| λ₁tau intercept | 0.0181 | 0.28 |
| λ₂forecast adj. | 0.0062 | 0.83 |
| λ₃tau persistence | 0.9938 | 102.89*** |
0.666
Persistence2d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 126 | |
α ARCH Response to squared shocks | 0.7598 | 3.31*** |
β GARCH Volatility persistence | 0.1561 | 2.24** |
γ leverage Additional response to negative shocks | -0.5000 | -1.91* |
λ₁ tau intercept Baseline long-term coefficient | 0.0181 | 0.28 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0062 | 0.83 |
λ₃ tau persistence Long-term factor persistence | 0.9938 | 102.89*** |
Persistence:
0.666
Half-life:
2 days
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