V-Lab
Deutsche Telekom AG GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, August 26th, 2026
1 Day
28.52%
decreased by 1.12%
1 Week
28.51%
decreased by 1.13%
1 Month
28.46%
decreased by 1.18%
Analysis last updated: Wednesday, August 26, 2026 at 08:14 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 15, 1996 to Aug 21, 2026Model Insight
This asset exhibits a modest leverage effect: negative returns increase next-day volatility 29% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0433 | 15.46*** |
α ARCH Response to squared shocks | 0.0638 | 22.40*** |
β GARCH Volatility persistence | 0.9132 | 328.50*** |
γ leverage Additional response to negative shocks | 0.0182 | 3.95*** |
Persistence:
0.986
Half-life:
50 days
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