V-Lab
Volkswagen AG GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
25.88%
decreased by 0.86%
1 Week
26.20%
decreased by 0.54%
1 Month
27.33%
increased by 0.59%
Analysis last updated: Saturday, August 22, 2026 at 08:45 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Aug 21, 2026Model Insight
Volatility shocks decay with a half-life of 41 trading days, meaning a shock loses half its impact after approximately 41 days. Returns follow a Student-t distribution with v = 5.84 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 | 4.6984 | 6.79*** |
α ARCH Response to squared shocks | 0.0770 | 30.81*** |
β GARCH Volatility persistence | 0.9833 | 369.80*** |
ν DF Student-t tail thickness | 5.8404 | 7.63*** |
Persistence:
0.983
Half-life:
41 days
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