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Goldman Sachs Equal Weight US Large Cap Equity ETF GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, August 17th, 2026

1 Day

11.27%

decreased by 0.99%

1 Week

11.65%

decreased by 0.61%

1 Month

12.81%

increased by 0.55%

Analysis last updated: Friday, August 14, 2026 at 09:26 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

5Y ·

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graph of Goldman Sachs Equal Weight US Large Cap Equity ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 15, 2017 to Aug 14, 2026

Model Insight

Volatility shocks decay with a half-life of 21 trading days, meaning a shock loses half its impact after approximately 21 days. Returns follow a Student-t distribution with v = 8.20 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

1.0638
9.61***
α

ARCH

Response to squared shocks

0.1324
22.75***
β

GARCH

Volatility persistence

0.9681
251.72***
ν

DF

Student-t tail thickness

8.1994
4.43***

Persistence:

0.968

Half-life:

21 days