V-Lab
Coca-Cola Co/The GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
18.29%
decreased by 0.41%
1 Week
18.35%
decreased by 0.35%
1 Month
18.58%
decreased by 0.12%
Analysis last updated: Thursday, September 10, 2026 at 09:57 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 4, 2026Model Insight
With persistence 0.994, volatility shocks have a half-life of 108 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GARCH Model
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High persistence: persistence 0.994, shock half-life ~108 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0129 | 3.71*** |
| αARCH | 0.0503 | 7.64*** |
| βGARCH | 0.9433 | 132.21*** |
0.994
Persistence108d
Half-lifeσ
GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0129 | 3.71*** |
α ARCH Response to squared shocks | 0.0503 | 7.64*** |
β GARCH Volatility persistence | 0.9433 | 132.21*** |
Persistence:
0.994
Half-life:
108 days
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