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V-Lab

Capgemini Se APARCH Volatility Analysis

Volatility prediction for Tuesday, September 8th, 2026

1 Day

38.57%

increased by 2.04%

1 Week

38.53%

increased by 2.00%

1 Month

38.38%

increased by 1.85%

Analysis last updated: Tuesday, September 8, 2026 at 08:05 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Capgemini Se APARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Apr 16, 2004 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 52 trading days, meaning a shock loses half its impact after approximately 52 days. The volatility power δ = 1.19 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.

σ

APARCH Model

Tap to view equation

Shock decay: Shocks decay with a 52-day half-lifeδ = 1.19 · sub-quadratic power
ParamValuet-stat
ωconst0.0362
4.31***
αARCH0.0315
0.86
βGARCH0.9575
128.41***
γleverage1.0000
0.53
δpower1.1941
6.58***

0.987

Persistence

52d

Half-life
σ

APARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0362
4.31***
α

ARCH

Response to squared shocks

0.0315
0.86
β

GARCH

Volatility persistence

0.9575
128.41***
γ

leverage

Additional response to negative shocks

1.0000
0.53
δ

power

Transformation power

1.1941
6.58***

Persistence:

0.987

Half-life:

52 days