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Goldman Sachs Physical Gold ETF GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

22.82%

decreased by 1.46%

1 Week

22.59%

decreased by 1.69%

1 Month

21.76%

decreased by 2.52%

Analysis last updated: Friday, July 24, 2026 at 09:27 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Goldman Sachs Physical Gold ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 15, 2018 to Jul 24, 2026

Model Insight

Volatility shocks decay with a half-life of 30 trading days, meaning a shock loses half its impact after approximately 30 days. Returns follow a Student-t distribution with v = 6.27 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

1.1114
5.24***
α

ARCH

Response to squared shocks

0.0712
18.55***
β

GARCH

Volatility persistence

0.9773
191.07***
ν

DF

Student-t tail thickness

6.2663
2.93***

Persistence:

0.977

Half-life:

30 days