V-Lab
Cellnex Telecom SAU GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
24.63%
decreased by 1.67%
1 Week
24.98%
decreased by 1.32%
1 Month
25.90%
decreased by 0.40%
Analysis last updated: Sunday, August 23, 2026 at 01:47 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 7, 2015 to Aug 21, 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 = 6.41 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 | 2.9713 | 10.95*** |
α ARCH Response to squared shocks | 0.0928 | 13.72*** |
β GARCH Volatility persistence | 0.9340 | 128.43*** |
ν DF Student-t tail thickness | 6.4103 | 3.01*** |
Persistence:
0.934
Half-life:
10 days
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