V-Lab
Johnson & Johnson Asy. Power MEM Volatility Analysis
Volatility prediction for Monday, August 10th, 2026
1 Day
24.13%
decreased by 1.73%
1 Week
22.64%
decreased by 3.22%
1 Month
18.55%
decreased by 7.31%
Analysis last updated: Friday, August 7, 2026 at 10:45 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Aug 7, 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 = 0.86 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
μ
APMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0293 | 31.86*** |
α ARCH Response to squared shocks | 0.1976 | 74.17*** |
β GARCH Volatility persistence | 0.7943 | 282.35*** |
γ leverage Additional response to negative shocks | 0.1359 | 30.08*** |
δ power Transformation power | 0.8612 | 22.35*** |
Persistence:
0.951
Half-life:
14 days
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