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V-Lab

Grab Holdings Limited GJR-GARCH Volatility Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Volatility prediction for Tuesday, August 25th, 2026

1 Day

37.20%

decreased by 0.96%

1 Week

37.88%

decreased by 0.28%

1 Month

40.50%

increased by 2.34%

Analysis last updated: Monday, August 24, 2026 at 09:24 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Grab Holdings Limited GJR-GARCH

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 1.000, volatility shocks have a half-life of 1386294 trading days (~5501.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Inverse leverage: Positive returns increase volatility 141% more than negative returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1019
10.23***
α

ARCH

Response to squared shocks

0.1403
11.91***
β

GARCH

Volatility persistence

0.9008
191.16***
γ

leverage

Additional response to negative shocks

-0.0821
-5.72***

Persistence:

1.000

Half-life:

1386294 days