V-Lab
John Wiley & Sons Inc GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
28.41%
decreased by 1.22%
1 Week
29.02%
decreased by 0.61%
1 Month
30.73%
increased by 1.10%
Analysis last updated: Friday, August 21, 2026 at 11:12 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Aug 21, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 111% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2364 | 24.90*** |
α ARCH Response to squared shocks | 0.0986 | 19.55*** |
β GARCH Volatility persistence | 0.7959 | 148.79*** |
γ leverage Additional response to negative shocks | 0.1093 | 11.57*** |
Persistence:
0.949
Half-life:
13 days
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