V-Lab
Coca-Cola Co/The GJR-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
25.22%
decreased by 0.47%
1 Week
25.22%
decreased by 0.47%
1 Month
25.25%
decreased by 0.44%
Analysis last updated: Friday, July 24, 2026 at 10:41 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 0.994, volatility shocks have a half-life of 123 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 208% more than positive returns
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0149 | 16.72*** |
α ARCH Response to squared shocks | 0.0266 | 15.43*** |
β GARCH Volatility persistence | 0.9402 | 509.05*** |
γ leverage Additional response to negative shocks | 0.0552 | 14.47*** |
Persistence:
0.994
Half-life:
123 days
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