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Cellnex Telecom SAU GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, October 5th, 2026

1 Day

31.88%

increased by 0.75%

1 Week

31.37%

increased by 0.24%

1 Month

29.96%

decreased by 1.17%

Analysis last updated: Saturday, October 3, 2026 at 11:02 PM UTC

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Date Range:

from

10/02/2024

to

10/02/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Cellnex Telecom SAU GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 7, 2015 to Oct 2, 2026

Model Insight

Volatility shocks decay with a half-life of 10 trading days, meaning a shock loses half its impact after approximately 10 days. Returns follow a Student-t distribution with v = 6.52 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 10-day half-lifev = 6.52 · fat tails
ParamValuet-stat
ωconst2.9779
2.79***
αARCH0.0920
3.47***
βGARCH0.9352
33.15***
νDF6.5205
0.74

0.935

Persistence

10d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.9779
2.79***
α

ARCH

Response to squared shocks

0.0920
3.47***
β

GARCH

Volatility persistence

0.9352
33.15***
ν

DF

Student-t tail thickness

6.5205
0.74

Persistence:

0.935

Half-life:

10 days