V-Lab
Cellnex Telecom SAU GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
25.34%
decreased by 1.07%
1 Week
25.62%
decreased by 0.79%
1 Month
26.39%
decreased by 0.02%
Analysis last updated: Sunday, August 23, 2026 at 01:45 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
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 184% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1735 | 16.18*** |
α ARCH Response to squared shocks | 0.0470 | 9.56*** |
β GARCH Volatility persistence | 0.8534 | 134.09*** |
γ leverage Additional response to negative shocks | 0.0865 | 7.28*** |
Persistence:
0.944
Half-life:
12 days
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