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V-Lab

Alphabet Inc GJR-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

34.35%

decreased by 0.83%

1 Week

34.22%

decreased by 0.96%

1 Month

33.76%

decreased by 1.42%

Analysis last updated: Friday, August 21, 2026 at 09:50 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Alphabet Inc GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 19, 2004 to Aug 21, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 129% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0909
9.55***
α

ARCH

Response to squared shocks

0.0307
12.67***
β

GARCH

Volatility persistence

0.9262
211.50***
γ

leverage

Additional response to negative shocks

0.0395
6.74***

Persistence:

0.977

Half-life:

29 days