V-Lab
Coca-Cola Co/The GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
25.31%
increased by 0.07%
1 Week
25.30%
increased by 0.06%
1 Month
25.26%
increased by 0.02%
Analysis last updated: Friday, July 24, 2026 at 10:44 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 24, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 150 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 = 5.62 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 | 2.3317 | 4.51*** |
α ARCH Response to squared shocks | 0.0579 | 51.75*** |
β GARCH Volatility persistence | 0.9954 | 1,004.43*** |
ν DF Student-t tail thickness | 5.6218 | 12.38*** |
Persistence:
0.995
Half-life:
150 days
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