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
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 Nov 6, 2026Model 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
| Param | Value | t-stat |
|---|---|---|
| ωlong-run | 1.4526 | 1.57 |
| αscore | 0.1122 | 8.45*** |
| βpersistence | 0.9868 | 106.29*** |
| νDF | 8.1034 | 1.51 |
0.987
Persistence52d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-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
Other Invesco S&P 500 Quality ETF Analyses
Other GAS-GARCH Student T Analyses on ETFs