V-Lab
Vulcan Infrastructure and Power Inc GAS-GARCH Student T Volatility Analysis
Volatility prediction for Tuesday, September 15th, 2026
1 Day
96.03%
decreased by 1.60%
1 Week
100.38%
increased by 2.75%
1 Month
109.88%
increased by 12.25%
Analysis last updated: Monday, September 14, 2026 at 09:39 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 15, 2021 to Sep 11, 2026Model Insight
Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days. Returns follow a Student-t distribution with v = 4.54 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 8-day half-lifev = 4.54 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωconst | 57.7191 | 1.45 |
| αARCH | 0.0650 | 1.69* |
| βGARCH | 0.9124 | 18.93*** |
| νDF | 4.5417 | 0.47 |
0.912
Persistence8d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 57.7191 | 1.45 |
α ARCH Response to squared shocks | 0.0650 | 1.69* |
β GARCH Volatility persistence | 0.9124 | 18.93*** |
ν DF Student-t tail thickness | 4.5417 | 0.47 |
Persistence:
0.912
Half-life:
8 days
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