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Invesco S&P 500 Quality ETF GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, November 10th, 2026

1 Day

24.70%

increased by 4.67%

1 Week

24.57%

increased by 4.54%

1 Month

24.09%

increased by 4.06%

Analysis last updated: Monday, November 9, 2026 at 10:48 PM UTC

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Date Range:

from

11/09/2024

to

11/09/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Invesco S&P 500 Quality ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 6, 2005 to Nov 6, 2026

Model Insight

Volatility shocks decay with a half-life of 52 trading days, meaning a shock loses half its impact after approximately 52 days. Returns follow a Student-t distribution with v = 8.10 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 52-day half-lifev = 8.10 · fat tails
ParamValuet-stat
ωlong-run1.4526
1.57
αscore0.1122
8.45***
βpersistence0.9868
106.29***
νDF8.1034
1.51

0.987

Persistence

52d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

long-run

Long-run variance given a price move

1.4526
1.57
α

score

Weight on the scaled score

0.1122
8.45***
β

persistence

Volatility persistence

0.9868
106.29***
ν

DF

Student-t tail thickness

8.1034
1.51

Persistence:

0.987

Half-life:

52 days