V-Lab
Miami International Hold Inc GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
40.34%
increased by 0.13%
1 Week
40.46%
increased by 0.25%
1 Month
40.81%
increased by 0.60%
Analysis last updated: Saturday, September 12, 2026 at 12:18 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 14, 2025 to Sep 11, 2026Model Insight
Volatility shocks decay with a half-life of 13 trading days, meaning a shock loses half its impact after approximately 13 days. Returns follow a Student-t distribution with v = 31.31 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
Shock decay: Shocks decay with a 13-day half-lifev = 31.31 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωconst | 6.8589 | 4.70*** |
| αARCH | 0.0330 | 0.85 |
| βGARCH | 0.9487 | 6.69*** |
| νDF | 31.3147 | 0.01 |
0.949
Persistence13d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 6.8589 | 4.70*** |
α ARCH Response to squared shocks | 0.0330 | 0.85 |
β GARCH Volatility persistence | 0.9487 | 6.69*** |
ν DF Student-t tail thickness | 31.3147 | 0.01 |
Persistence:
0.949
Half-life:
13 days
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