V-Lab
Ashika Global Securities Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
63.34%
increased by 7.25%
1 Week
63.28%
increased by 7.19%
1 Month
63.03%
increased by 6.94%
Analysis last updated: Wednesday, August 5, 2026 at 07:10 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 8, 2013 to Jul 31, 2026Model Insight
With persistence 0.999, volatility shocks have a half-life of 693 trading days (~2.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 6.89 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 | 0.0000 | |
α ARCH Response to squared shocks | 0.3410 | 38.89*** |
β GARCH Volatility persistence | 0.9990 | 1,707.69*** |
ν DF Student-t tail thickness | 6.8920 | 19.06*** |
Persistence:
0.999
Half-life:
693 days
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