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

Volatility prediction for Tuesday, July 28th, 2026

1 Day

10.35%

increased by 0.56%

1 Week

10.82%

increased by 1.03%

1 Month

12.21%

increased by 2.42%

Analysis last updated: Monday, July 27, 2026 at 09:18 PM UTC

Date Range:

from

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 Jul 24, 2026

Model Insight

Volatility shocks decay with a half-life of 22 trading days, meaning a shock loses half its impact after approximately 22 days. Returns follow a Student-t distribution with v = 8.15 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

1.0654
9.47***
α

ARCH

Response to squared shocks

0.1324
22.90***
β

GARCH

Volatility persistence

0.9686
251.12***
ν

DF

Student-t tail thickness

8.1519
4.47***

Persistence:

0.969

Half-life:

22 days