V-Lab
Abbott Laboratories GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
24.65%
decreased by 0.57%
1 Week
24.71%
decreased by 0.51%
1 Month
24.90%
decreased by 0.32%
Analysis last updated: Friday, September 4, 2026 at 10:30 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
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 242% more than equivalent positive returns.
σ
GJR-GARCH Model
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Leverage: Negative returns increase volatility 242% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0393 | 4.83*** |
| αARCH | 0.0235 | 3.16*** |
| βGARCH | 0.9341 | 109.16*** |
| γleverage | 0.0568 | 2.86*** |
0.986
Persistence49d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0393 | 4.83*** |
α ARCH Response to squared shocks | 0.0235 | 3.16*** |
β GARCH Volatility persistence | 0.9341 | 109.16*** |
γ leverage Additional response to negative shocks | 0.0568 | 2.86*** |
Persistence:
0.986
Half-life:
49 days
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