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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Xtrackers S&P 100 Ex Top 20 ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 28, 2022 to Sep 18, 2026

Model 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
ParamValuet-stat
ωconst0.0936
2.03**
αARCH0.0000
0.00
βGARCH0.7633
9.08***
γleverage0.1867
1.09

0.857

Persistence

4d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-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