V-Lab
Capgemini Se MEM Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
43.30%
decreased by 0.56%
1 Week
43.12%
decreased by 0.74%
1 Month
42.43%
decreased by 1.43%
Analysis last updated: Tuesday, September 8, 2026 at 08:05 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 16, 2004 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 65 trading days, meaning a shock loses half its impact after approximately 65 days.
μ
MEM Model
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Shock decay: Shocks decay with a 65-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0469 | 1.62 |
| αARCH | 0.0331 | 3.90*** |
| βGARCH | 0.9564 | 127.02*** |
0.989
Persistence65d
Half-lifeμ
MEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0469 | 1.62 |
α ARCH Response to squared shocks | 0.0331 | 3.90*** |
β GARCH Volatility persistence | 0.9564 | 127.02*** |
Persistence:
0.989
Half-life:
65 days
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