Miami International Hold Inc APARCH Volatility Analysis
Volatility prediction for Monday, October 19th, 2026
1 Day
45.59%
decreased by 0.62%
1 Week
45.16%
decreased by 1.05%
1 Month
43.98%
decreased by 2.23%
Analysis last updated: Friday, October 16, 2026 at 11:24 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 14, 2025 to Oct 16, 2026Boundary Parameters
Model Insight
Volatility shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days.
σ
APARCH Model
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Shock decay: Shocks decay with a 11-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.3881 | 0.37 |
| αARCH | 0.0082 | 0.00 |
| βGARCH | 0.9223 | 6.42*** |
| γleverage | 1.0000 | 0.00 |
| δpower | 1.8701 | 1.33 |
0.937
Persistence11d
Half-lifeσ
APARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.3881 | 0.37 |
α ARCH Response to squared shocks | 0.0082 | 0.00 |
β GARCH Volatility persistence | 0.9223 | 6.42*** |
γ leverage Additional response to negative shocks | 1.0000 | 0.00 |
δ power Transformation power | 1.8701 | 1.33 |
Persistence:
0.937
Half-life:
11 days
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