Johnson & Johnson GARCH Volatility Analysis
Volatility prediction for Wednesday, July 22nd, 2026
1 Day
26.87%
decreased by 1.01%
1 Week
26.78%
decreased by 1.10%
1 Month
26.46%
decreased by 1.42%
Analysis last updated: Tuesday, July 21, 2026 at 09:48 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 17, 2026Model Insight
Volatility shocks decay with a half-life of 59 trading days, meaning a shock loses half its impact after approximately 59 days.
σ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0243 | 22.81*** |
α ARCH Response to squared shocks | 0.0808 | 42.42*** |
β GARCH Volatility persistence | 0.9075 | 434.62*** |
Persistence:
0.988
Half-life:
59 days
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