V-Lab
Xtrackers S&P 100 Ex Top 20 ETF GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
12.76%
increased by 0.43%
1 Week
12.78%
increased by 0.45%
1 Month
12.81%
increased by 0.48%
Analysis last updated: Friday, September 18, 2026 at 09:58 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 28, 2022 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 4 trading days, meaning a shock loses half its impact after approximately 4 days.
σ
GJR-GARCH Model
Tap to view equation
Shock decay: Shocks decay with a 4-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0936 | 2.03** |
| αARCH | 0.0000 | 0.00 |
| βGARCH | 0.7633 | 9.08*** |
| γleverage | 0.1867 | 1.09 |
0.857
Persistence4d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0936 | 2.03** |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.7633 | 9.08*** |
γ leverage Additional response to negative shocks | 0.1867 | 1.09 |
Persistence:
0.857
Half-life:
4 days
Other Xtrackers S&P 100 Ex Top 20 ETF Analyses
Other GJR-GARCH Analyses on ETFs