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V-Lab
V-Lab

Johnson & Johnson AGARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

21.88%

decreased by 0.82%

1 Week

21.92%

decreased by 0.78%

1 Month

22.06%

decreased by 0.64%

Analysis last updated: Thursday, September 10, 2026 at 09:57 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Johnson & Johnson AGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 4, 2026

Model Insight

The news-impact curve is shifted (γ = 0.38) so that negative returns raise next-day volatility more than positive returns of the same size. The gap is largest for small shocks and narrows for larger ones.

σ

AGARCH Model

Tap to view equation

Asymmetry: negative returns raise volatility more
ParamValuet-stat
ωconst0.0170
2.91***
αARCH0.0781
11.06***
βGARCH0.9088
115.40***
γleverage0.3802
4.44***

0.987

Persistence

52d

Half-life
σ

AGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0170
2.91***
α

ARCH

Response to squared shocks

0.0781
11.06***
β

GARCH

Volatility persistence

0.9088
115.40***
γ

leverage

Additional response to negative shocks

0.3802
4.44***

Persistence:

0.987

Half-life:

52 days