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V-Lab

Bristol-Myers Squibb Co Asy. MEM Volatility Analysis

Volatility prediction for Monday, September 28th, 2026

1 Day

23.12%

increased by 0.46%

1 Week

23.31%

increased by 0.65%

1 Month

23.97%

increased by 1.31%

Analysis last updated: Saturday, September 26, 2026 at 12:00 AM UTC

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graph of Bristol-Myers Squibb Co AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 25, 2026

Model Insight

Volatility shocks decay with a half-life of 40 trading days, meaning a shock loses half its impact after approximately 40 days.

μ

AMEM Model

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Shock decay: Shocks decay with a 40-day half-life
ParamValuet-stat
ωconst0.0541
7.06***
αARCH0.1255
8.61***
βGARCH0.8381
86.65***
γleverage0.0386
1.62

0.983

Persistence

40d

Half-life
μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0541
7.06***
α

ARCH

Response to squared shocks

0.1255
8.61***
β

GARCH

Volatility persistence

0.8381
86.65***
γ

leverage

Additional response to negative shocks

0.0386
1.62

Persistence:

0.983

Half-life:

40 days