V-Lab
Coca-Cola Co/The GJR-GARCH Volatility Analysis
Volatility prediction for Monday, October 5th, 2026
1 Day
15.42%
decreased by 0.16%
1 Week
15.58%
increased by 0.00%
1 Month
16.17%
increased by 0.59%
Analysis last updated: Friday, October 2, 2026 at 11:44 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Oct 2, 2026Model Insight
With persistence 0.994, volatility shocks have a half-life of 118 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 214% more than positive returns
σ
GJR-GARCH Model
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High persistence: persistence 0.994, shock half-life ~118 daysLeverage: Negative returns increase volatility 214% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0154 | 4.22*** |
| αARCH | 0.0266 | 3.83*** |
| βGARCH | 0.9391 | 124.72*** |
| γleverage | 0.0569 | 3.71*** |
0.994
Persistence118d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0154 | 4.22*** |
α ARCH Response to squared shocks | 0.0266 | 3.83*** |
β GARCH Volatility persistence | 0.9391 | 124.72*** |
γ leverage Additional response to negative shocks | 0.0569 | 3.71*** |
Persistence:
0.994
Half-life:
118 days
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