Invesco S&P 500 Quality ETF GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, October 20th, 2026
1 Day
13.33%
decreased by 0.68%
1 Week
13.60%
decreased by 0.41%
1 Month
14.52%
increased by 0.51%
Analysis last updated: Monday, October 19, 2026 at 09:54 PM UTC
Press Delete or Backspace to remove this series.
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 6, 2005 to Oct 16, 2026Model 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
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0292 | 4.19*** |
| αARCH | 0.0167 | 0.68 |
| βGARCH | 0.8648 | 51.25*** |
| γleverage | 0.1963 | 5.24*** |
0.980
Persistence34d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0292 | 4.19*** |
α ARCH Response to squared shocks | 0.0167 | 0.68 |
β GARCH Volatility persistence | 0.8648 | 51.25*** |
γ leverage Additional response to negative shocks | 0.1963 | 5.24*** |
Persistence:
0.980
Half-life:
34 days
Other Invesco S&P 500 Quality ETF Analyses
Other GJR-GARCH Analyses on ETFs