V-Lab
Coca-Cola Co/The GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
19.29%
decreased by 0.43%
1 Week
19.38%
decreased by 0.34%
1 Month
19.71%
decreased by 0.01%
Analysis last updated: Friday, August 21, 2026 at 10:51 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 0.994, volatility shocks have a half-life of 122 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 213% more than positive returns
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0151 | 16.73*** |
α ARCH Response to squared shocks | 0.0264 | 15.37*** |
β GARCH Volatility persistence | 0.9398 | 504.97*** |
γ leverage Additional response to negative shocks | 0.0563 | 14.73*** |
Persistence:
0.994
Half-life:
122 days
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