V-Lab
Dow Jones Euro Stoxx Index GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
10.03%
decreased by 0.47%
1 Week
10.29%
decreased by 0.21%
1 Month
11.22%
increased by 0.72%
Analysis last updated: Friday, August 14, 2026 at 06:18 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Aug 14, 2026Model Insight
Volatility shocks decay with a half-life of 68 trading days, meaning a shock loses half its impact after approximately 68 days. Returns follow a Student-t distribution with v = 6.95 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 | 1.4522 | 6.16*** |
α ARCH Response to squared shocks | 0.0829 | 36.52*** |
β GARCH Volatility persistence | 0.9899 | 582.28*** |
ν DF Student-t tail thickness | 6.9525 | 7.56*** |
Persistence:
0.990
Half-life:
68 days
Other GAS-GARCH Student T Analyses on Equity Indices