V-Lab
SP Funds S&P Global Tech ETF GAS-GARCH Student T Volatility Analysis
Volatility prediction for Wednesday, August 26th, 2026
1 Day
24.27%
decreased by 0.59%
1 Week
24.40%
decreased by 0.46%
1 Month
24.79%
decreased by 0.07%
Analysis last updated: Tuesday, August 25, 2026 at 09:44 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 1, 2023 to Aug 21, 2026Model Insight
Volatility shocks decay with a half-life of 18 trading days, meaning a shock loses half its impact after approximately 18 days. Returns follow a Student-t distribution with v = 6.26 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.6714 | 4.86*** |
α ARCH Response to squared shocks | 0.0630 | 6.51*** |
β GARCH Volatility persistence | 0.9617 | 159.97*** |
ν DF Student-t tail thickness | 6.2631 | 1.44 |
Persistence:
0.962
Half-life:
18 days
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