V-Lab
Bristol-Myers Squibb Co GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, September 16th, 2026
1 Day
24.68%
decreased by 0.61%
1 Week
24.83%
decreased by 0.46%
1 Month
25.33%
increased by 0.04%
Analysis last updated: Tuesday, September 15, 2026 at 09:21 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 126% more than equivalent positive returns.
σ
GJR-GARCH Model
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Leverage: Negative returns increase volatility 126% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0677 | 4.15*** |
| αARCH | 0.0390 | 3.56*** |
| βGARCH | 0.9144 | 74.75*** |
| γleverage | 0.0493 | 2.54** |
0.978
Persistence31d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0677 | 4.15*** |
α ARCH Response to squared shocks | 0.0390 | 3.56*** |
β GARCH Volatility persistence | 0.9144 | 74.75*** |
γ leverage Additional response to negative shocks | 0.0493 | 2.54** |
Persistence:
0.978
Half-life:
31 days
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