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V-Lab
V-Lab

Invesco S&P 500 Quality ETF GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, September 9th, 2026

1 Day

11.57%

decreased by 0.28%

1 Week

11.96%

increased by 0.11%

1 Month

13.23%

increased by 1.38%

Analysis last updated: Tuesday, September 8, 2026 at 10:43 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Invesco S&P 500 Quality ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 6, 2005 to Sep 4, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

GJR-GARCH Model

Tap to view equation

Leverage: volatility responds almost entirely to negative shocks
ParamValuet-stat
ωconst0.0293
4.16***
αARCH0.0167
0.68
βGARCH0.8648
51.10***
γleverage0.1965
5.21***

0.980

Persistence

34d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0293
4.16***
α

ARCH

Response to squared shocks

0.0167
0.68
β

GARCH

Volatility persistence

0.8648
51.10***
γ

leverage

Additional response to negative shocks

0.1965
5.21***

Persistence:

0.980

Half-life:

34 days