V-Lab
Miami International Hold Inc Asy. MEM Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
20.85%
decreased by 1.30%
1 Week
20.89%
decreased by 1.26%
1 Month
21.06%
decreased by 1.09%
Analysis last updated: Friday, September 4, 2026 at 11:02 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 14, 2025 to Sep 4, 2026Model Insight
With persistence 0.997, volatility shocks have a half-life of 269 trading days (~1.1 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
AMEM Model
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High persistence: persistence 0.997, shock half-life ~269 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0080 | 0.62 |
| αARCH | 0.1328 | 1.75* |
| βGARCH | 0.8542 | 15.51*** |
| γleverage | 0.0209 | 0.22 |
0.997
Persistence269d
Half-lifeμ
AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0080 | 0.62 |
α ARCH Response to squared shocks | 0.1328 | 1.75* |
β GARCH Volatility persistence | 0.8542 | 15.51*** |
γ leverage Additional response to negative shocks | 0.0209 | 0.22 |
Persistence:
0.997
Half-life:
269 days
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