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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

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graph of SP Funds S&P Global Tech ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 1, 2023 to Aug 21, 2026

Model 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

ParameterValuet-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