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CVS Health Corp MEM Volatility Analysis

Volatility prediction for Monday, September 28th, 2026

1 Day

33.70%

increased by 6.42%

1 Week

33.65%

increased by 6.37%

1 Month

33.44%

increased by 6.16%

Analysis last updated: Saturday, September 26, 2026 at 12:07 AM UTC

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graph of CVS Health Corp MEM

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 57 trading days, meaning a shock loses half its impact after approximately 57 days.

μ

MEM Model

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Shock decay: Shocks decay with a 57-day half-life
ParamValuet-stat
ωconst0.0472
2.02**
αARCH0.1232
10.68***
βGARCH0.8646
102.04***

0.988

Persistence

57d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0472
2.02**
α

ARCH

Response to squared shocks

0.1232
10.68***
β

GARCH

Volatility persistence

0.8646
102.04***

Persistence:

0.988

Half-life:

57 days