V-Lab
Coca-Cola Co/The GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
20.16%
decreased by 0.50%
1 Week
20.20%
decreased by 0.46%
1 Month
20.35%
decreased by 0.31%
Analysis last updated: Friday, August 21, 2026 at 10:52 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Aug 21, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 145 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 5.60 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 | 2.2895 | 4.48*** |
α ARCH Response to squared shocks | 0.0581 | 50.86*** |
β GARCH Volatility persistence | 0.9952 | 959.71*** |
ν DF Student-t tail thickness | 5.5963 | 12.23*** |
Persistence:
0.995
Half-life:
145 days
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