Miami International Hold Inc GAS-GARCH Student T Volatility Analysis
Volatility prediction for Friday, October 23rd, 2026
1 Day
43.87%
increased by 0.70%
1 Week
43.71%
increased by 0.54%
1 Month
43.26%
increased by 0.09%
Analysis last updated: Thursday, October 22, 2026 at 09:43 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 14, 2025 to Oct 16, 2026Model Insight
Volatility shocks decay with a half-life of 12 trading days, meaning a shock loses half its impact after approximately 12 days. Returns follow a Student-t distribution with v = 12.24 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
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Shock decay: Shocks decay with a 12-day half-lifev = 12.24 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωlong-run | 7.1220 | 0.83 |
| αscore | 0.0198 | 0.29 |
| βpersistence | 0.9425 | 6.42*** |
| νDF | 12.2378 | 0.01 |
0.942
Persistence12d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω long-run Long-run variance given a price move | 7.1220 | 0.83 |
α score Weight on the scaled score | 0.0198 | 0.29 |
β persistence Volatility persistence | 0.9425 | 6.42*** |
ν DF Student-t tail thickness | 12.2378 | 0.01 |
Persistence:
0.942
Half-life:
12 days
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