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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Grab Holdings Limited GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 1, 2020 to Aug 21, 2026

Model 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

ParameterValuet-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