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V-Lab

IBEX 35 Index MEM Volatility Analysis

Volatility prediction for Tuesday, October 20th, 2026

1 Day

14.75%

increased by 0.44%

1 Week

15.27%

increased by 0.96%

1 Month

16.82%

increased by 2.51%

Analysis last updated: Monday, October 19, 2026 at 04:04 PM UTC

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Date Range:

from

10/19/2024

to

10/19/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of IBEX 35 Index MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 5, 1990 to Oct 16, 2026

Model Insight

Volatility shocks decay with a half-life of 20 trading days, meaning a shock loses half its impact after approximately 20 days.

μ

MEM Model

Tap to view equation

Shock decay: Shocks decay with a 20-day half-life
ParamValuet-stat
ωconst0.0604
0.69
αARCH0.2374
3.66***
βGARCH0.7294
63.10***

0.967

Persistence

20d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0604
0.69
α

ARCH

Response to squared shocks

0.2374
3.66***
β

GARCH

Volatility persistence

0.7294
63.10***

Persistence:

0.967

Half-life:

20 days