V-Lab
Grupo Comercial Chedraui SA de CV GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
19.15%
decreased by 0.77%
1 Week
19.62%
decreased by 0.30%
1 Month
21.13%
increased by 1.21%
Analysis last updated: Sunday, August 23, 2026 at 12:17 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 30, 2010 to Aug 21, 2026Model Insight
Volatility shocks decay with a half-life of 24 trading days, meaning a shock loses half its impact after approximately 24 days. Returns follow a Student-t distribution with v = 5.45 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.7724 | 6.59*** |
α ARCH Response to squared shocks | 0.0638 | 13.56*** |
β GARCH Volatility persistence | 0.9715 | 193.17*** |
ν DF Student-t tail thickness | 5.4497 | 3.94*** |
Persistence:
0.971
Half-life:
24 days
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