V-Lab
LANXESS AG GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
42.27%
increased by 1.46%
1 Week
42.20%
increased by 1.39%
1 Month
41.95%
increased by 1.14%
Analysis last updated: Saturday, September 19, 2026 at 08:40 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 31, 2005 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 62 trading days, meaning a shock loses half its impact after approximately 62 days. Returns follow a Student-t distribution with v = 5.66 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
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Shock decay: Shocks decay with a 62-day half-lifev = 5.66 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωconst | 6.0915 | 1.29 |
| αARCH | 0.0544 | 7.48*** |
| βGARCH | 0.9888 | 103.52*** |
| νDF | 5.6600 | 1.55 |
0.989
Persistence62d
Half-life𝑓
GAS-GARCH-T Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 6.0915 | 1.29 |
α ARCH Response to squared shocks | 0.0544 | 7.48*** |
β GARCH Volatility persistence | 0.9888 | 103.52*** |
ν DF Student-t tail thickness | 5.6600 | 1.55 |
Persistence:
0.989
Half-life:
62 days
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