Skip to main content
V-Lab

SDI Ltd MEM Volatility Analysis

Inactive

Last recorded values (Friday, June 26th, 2026):

1 Day

26.28%

1 Week

26.94%

1 Month

29.34%

Analysis last updated: Friday, June 26, 2026 at 06:56 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of SDI Ltd MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 21, 2001 to Jun 19, 2026

Model Insight

With persistence 0.994, volatility shocks have a half-life of 111 trading days (~0.4 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

0.0874
5.62***
α

ARCH

Response to squared shocks

0.0558
21.69***
β

GARCH

Volatility persistence

0.9380
446.23***

Persistence:

0.994

Half-life:

111 days