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V-Lab

Travelzoo Inc GJR-GARCH Volatility Analysis

Volatility prediction for Monday, August 10th, 2026

1 Day

81.57%

decreased by 2.20%

1 Week

81.11%

decreased by 2.66%

1 Month

79.65%

decreased by 4.12%

Analysis last updated: Friday, August 7, 2026 at 10:15 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Travelzoo Inc GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 29, 2002 to Aug 7, 2026

Model Insight

This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 141% 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

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.7794
14.64***
α

ARCH

Response to squared shocks

0.0971
14.66***
β

GARCH

Volatility persistence

0.8961
202.32***
γ

leverage

Additional response to negative shocks

-0.0568
-7.75***

Persistence:

0.965

Half-life:

19 days