Skip to main content
V-Lab

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

Volatility prediction for Wednesday, August 12th, 2026

1 Day

13.97%

decreased by 0.77%

1 Week

14.21%

decreased by 0.53%

1 Month

15.03%

increased by 0.29%

Analysis last updated: Tuesday, August 11, 2026 at 10:14 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 Aug 7, 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

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0292
16.52***
α

ARCH

Response to squared shocks

0.0166
2.69***
β

GARCH

Volatility persistence

0.8652
204.34***
γ

leverage

Additional response to negative shocks

0.1967
20.81***

Persistence:

0.980

Half-life:

34 days