Deutsche Telekom AG GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, October 22nd, 2026
1 Day
33.20%
decreased by 1.10%
1 Week
33.07%
decreased by 1.23%
1 Month
32.62%
decreased by 1.68%
Analysis last updated: Thursday, October 22, 2026 at 06:42 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 15, 1996 to Oct 16, 2026Model Insight
Volatility shocks decay with a half-life of 51 trading days, meaning a shock loses half its impact after approximately 51 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 51-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0423 | 3.85*** |
| αARCH | 0.0629 | 5.59*** |
| βGARCH | 0.9149 | 84.29*** |
| γleverage | 0.0174 | 0.97 |
0.987
Persistence51d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0423 | 3.85*** |
α ARCH Response to squared shocks | 0.0629 | 5.59*** |
β GARCH Volatility persistence | 0.9149 | 84.29*** |
γ leverage Additional response to negative shocks | 0.0174 | 0.97 |
Persistence:
0.987
Half-life:
51 days
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