V-Lab
Deutsche Telekom AG MEM Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
23.78%
decreased by 0.26%
1 Week
23.94%
decreased by 0.10%
1 Month
24.55%
increased by 0.51%
Analysis last updated: Friday, September 11, 2026 at 06:59 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 15, 1996 to Sep 4, 2026Model Insight
With persistence 0.994, volatility shocks have a half-life of 114 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
MEM Model
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High persistence: persistence 0.994, shock half-life ~114 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0289 | 1.55 |
| αARCH | 0.1578 | 10.48*** |
| βGARCH | 0.8361 | 65.30*** |
0.994
Persistence114d
Half-lifeμ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0289 | 1.55 |
α ARCH Response to squared shocks | 0.1578 | 10.48*** |
β GARCH Volatility persistence | 0.8361 | 65.30*** |
Persistence:
0.994
Half-life:
114 days
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