V-Lab
Travelzoo Inc EGARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
50.64%
increased by 0.36%
1 Week
51.96%
increased by 1.68%
1 Month
57.05%
increased by 6.77%
Analysis last updated: Friday, September 18, 2026 at 10:58 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 29, 2002 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 35 trading days, meaning a shock loses half its impact after approximately 35 days.
σ
EGARCH Model
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Shock decay: Shocks decay with a 35-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0711 | 2.75*** |
| αARCH | 0.1093 | 5.26*** |
| βGARCH | 0.9805 | 137.91*** |
| γleverage | 0.0333 | 1.70* |
0.981
Persistence35d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0711 | 2.75*** |
α ARCH Response to squared shocks | 0.1093 | 5.26*** |
β GARCH Volatility persistence | 0.9805 | 137.91*** |
γ leverage Additional response to negative shocks | 0.0333 | 1.70* |
Persistence:
0.981
Half-life:
35 days
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