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Cellnex Telecom SAU GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

27.13%

decreased by 0.05%

1 Week

27.16%

decreased by 0.02%

1 Month

27.24%

increased by 0.06%

Analysis last updated: Friday, September 11, 2026 at 09:19 PM UTC

Date Range:

from

to

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 Sep 4, 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 = 6.45 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 = 6.45 · fat tails
ParamValuet-stat
ωconst2.9754
2.73***
αARCH0.0918
3.45***
βGARCH0.9353
32.65***
νDF6.4456
0.75

0.935

Persistence

10d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.9754
2.73***
α

ARCH

Response to squared shocks

0.0918
3.45***
β

GARCH

Volatility persistence

0.9353
32.65***
ν

DF

Student-t tail thickness

6.4456
0.75

Persistence:

0.935

Half-life:

10 days