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
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 9, 1992 to Jul 10, 2026Model 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
| Parameter | Value | t-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
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