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V-Lab

Straits Times Index STI Asy. MEM Volatility Analysis

Volatility prediction for Thursday, July 16th, 2026

1 Day

13.65%

decreased by 0.03%

1 Week

13.77%

increased by 0.09%

1 Month

14.21%

increased by 0.53%

Analysis last updated: Wednesday, July 15, 2026 at 10:03 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Straits Times Index STI AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 9, 1992 to Jul 10, 2026

Model Insight

This asset exhibits a modest leverage effect: negative returns increase next-day volatility 50% more than equivalent positive returns.

μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0186
29.21***
α

ARCH

Response to squared shocks

0.1426
41.20***
β

GARCH

Volatility persistence

0.8061
318.87***
γ

leverage

Additional response to negative shocks

0.0710
11.80***

Persistence:

0.984

Half-life:

43 days