V-Lab
CVS Health Corp MEM Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
25.79%
decreased by 0.93%
1 Week
25.94%
decreased by 0.78%
1 Month
26.47%
decreased by 0.25%
Analysis last updated: Friday, September 4, 2026 at 10:43 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 55 trading days, meaning a shock loses half its impact after approximately 55 days.
μ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0482 | 2.05** |
α ARCH Response to squared shocks | 0.1247 | 10.71*** |
β GARCH Volatility persistence | 0.8628 | 100.82*** |
Persistence:
0.988
Half-life:
55 days
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