V-Lab
Johnson & Johnson Asy. Power MEM Volatility Analysis
Volatility prediction for Thursday, October 1st, 2026
1 Day
21.19%
1 Week
20.00%
1 Month
16.71%
Analysis last updated: Wednesday, September 30, 2026 at 09:57 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 25, 2026Model Insight
This asset exhibits a modest leverage effect: negative returns increase next-day volatility 27% more than equivalent positive returns. The volatility power δ = 0.87 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APMEM Model
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| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0294 | 7.99*** |
| αARCH | 0.1971 | 18.54*** |
| βGARCH | 0.7947 | 70.83*** |
| γleverage | 0.1366 | 7.57*** |
| δpower | 0.8668 | 5.65*** |
0.951
Persistence14d
Half-lifeAPMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0294 | 7.99*** |
α ARCH Response to squared shocks | 0.1971 | 18.54*** |
β GARCH Volatility persistence | 0.7947 | 70.83*** |
γ leverage Additional response to negative shocks | 0.1366 | 7.57*** |
δ power Transformation power | 0.8668 | 5.65*** |
Persistence:
0.951
Half-life:
14 days
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