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V-Lab

Goldman Sachs Nasdaq-100 Premium Income ETF GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

20.87%

decreased by 2.20%

1 Week

20.67%

decreased by 2.40%

1 Month

20.03%

decreased by 3.04%

Analysis last updated: Monday, July 20, 2026 at 09:28 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Goldman Sachs Nasdaq-100 Premium Income ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 26, 2023 to Jul 17, 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 = 5.41 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

1.2827
4.06***
α

ARCH

Response to squared shocks

0.1077
8.89***
β

GARCH

Volatility persistence

0.9613
119.40***
ν

DF

Student-t tail thickness

5.4116
2.72***

Persistence:

0.961

Half-life:

18 days