V-Lab
News Corp EGARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
25.12%
increased by 1.02%
1 Week
25.69%
increased by 1.59%
1 Month
27.14%
increased by 3.04%
Analysis last updated: Friday, September 18, 2026 at 10:42 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 19, 2013 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.
σ
EGARCH Model
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Shock decay: Shocks decay with a 8-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1002 | 1.88* |
| αARCH | 0.1826 | 3.27*** |
| βGARCH | 0.9173 | 25.76*** |
| γleverage | -0.0421 | -0.73 |
0.917
Persistence8d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1002 | 1.88* |
α ARCH Response to squared shocks | 0.1826 | 3.27*** |
β GARCH Volatility persistence | 0.9173 | 25.76*** |
γ leverage Additional response to negative shocks | -0.0421 | -0.73 |
Persistence:
0.917
Half-life:
8 days
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