Skip to main content
V-Lab

VIEL & Cie SA AGARCH Volatility Analysis

Volatility prediction for Wednesday, July 15th, 2026

1 Day

25.93%

decreased by 1.93%

1 Week

28.10%

increased by 0.24%

1 Month

31.71%

increased by 3.85%

Analysis last updated: Wednesday, July 15, 2026 at 06:45 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of VIEL & Cie SA AGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Jul 10, 2026

Model Insight

Volatility shocks decay with a half-life of 5 trading days, meaning a shock loses half its impact after approximately 5 days.

σ

AGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.6151
29.57***
α

ARCH

Response to squared shocks

0.2165
41.33***
β

GARCH

Volatility persistence

0.6520
87.77***
γ

leverage

Additional response to negative shocks

-0.0418
-1.07

Persistence:

0.868

Half-life:

5 days