V-Lab
Valora Renda Imobiliaria Fundo De Investimento Imobiliario GAS-GARCH Student T Volatility Analysis
Volatility prediction for Thursday, October 1st, 2026
1 Day
18.36%
decreased by 1.31%
1 Week
20.77%
increased by 1.10%
1 Month
24.39%
increased by 4.72%
Analysis last updated: Thursday, October 1, 2026 at 10:27 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 18, 2024 to Sep 25, 2026Model Insight
Volatility shocks decay with a half-life of 4 trading days, meaning a shock loses half its impact after approximately 4 days. Returns follow a Student-t distribution with v = 3.53 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 4-day half-lifev = 3.53 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωconst | 2.8356 | 0.76 |
| αARCH | 0.1358 | 1.13 |
| βGARCH | 0.8556 | 4.20*** |
| νDF | 3.5335 | 0.62 |
0.856
Persistence4d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.8356 | 0.76 |
α ARCH Response to squared shocks | 0.1358 | 1.13 |
β GARCH Volatility persistence | 0.8556 | 4.20*** |
ν DF Student-t tail thickness | 3.5335 | 0.62 |
Persistence:
0.856
Half-life:
4 days
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