V-Lab
Abbott Laboratories GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 15th, 2026
1 Day
26.13%
decreased by 0.56%
1 Week
26.14%
decreased by 0.55%
1 Month
26.18%
decreased by 0.51%
Analysis last updated: Monday, September 14, 2026 at 09:41 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 11, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 241% more than equivalent positive returns.
σ
GJR-GARCH Model
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Leverage: Negative returns increase volatility 241% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0392 | 4.83*** |
| αARCH | 0.0235 | 3.16*** |
| βGARCH | 0.9342 | 109.26*** |
| γleverage | 0.0566 | 2.85*** |
0.986
Persistence49d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0392 | 4.83*** |
α ARCH Response to squared shocks | 0.0235 | 3.16*** |
β GARCH Volatility persistence | 0.9342 | 109.26*** |
γ leverage Additional response to negative shocks | 0.0566 | 2.85*** |
Persistence:
0.986
Half-life:
49 days
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