V-Lab
Grab Holdings Limited GAS-GARCH Student T Volatility Analysis
Volatility prediction for Tuesday, August 25th, 2026
1 Day
45.57%
decreased by 1.79%
1 Week
45.53%
decreased by 1.83%
1 Month
45.39%
decreased by 1.97%
Analysis last updated: Monday, August 24, 2026 at 09:25 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 1, 2020 to Aug 21, 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 = 3.47 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 | 1.9491 | 10.37*** |
α ARCH Response to squared shocks | 0.0663 | 47.70*** |
β GARCH Volatility persistence | 0.9990 | 435.67*** |
ν DF Student-t tail thickness | 3.4723 | 34.88*** |
Persistence:
0.999
Half-life:
693 days
Other Grab Holdings Limited Analyses
Other GAS-GARCH Student T Analyses on Equities