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V-Lab

Apple Inc MEM Volatility Analysis

Volatility prediction for Wednesday, August 12th, 2026

1 Day

27.14%

increased by 0.50%

1 Week

27.75%

increased by 1.11%

1 Month

29.97%

increased by 3.33%

Analysis last updated: Tuesday, August 11, 2026 at 09:53 PM UTC

Date Range:

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to

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graph of Apple Inc MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Aug 7, 2026

Model Insight

With persistence 0.992, volatility shocks have a half-life of 85 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0911
7.86***
α

ARCH

Response to squared shocks

0.1903
51.09***
β

GARCH

Volatility persistence

0.8017
286.71***

Persistence:

0.992

Half-life:

85 days