V-Lab
Cellnex Telecom SAU GAS-GARCH Student T Volatility Analysis
Volatility prediction for Friday, July 24th, 2026
1 Day
34.61%
increased by 5.46%
1 Week
33.77%
increased by 4.62%
1 Month
31.49%
increased by 2.34%
Analysis last updated: Friday, July 24, 2026 at 08:08 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 7, 2015 to Jul 17, 2026Model 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 = 6.38 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.9640 | 11.02*** |
α ARCH Response to squared shocks | 0.0941 | 13.72*** |
β GARCH Volatility persistence | 0.9325 | 126.17*** |
ν DF Student-t tail thickness | 6.3764 | 3.05*** |
Persistence:
0.932
Half-life:
10 days
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