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V-Lab

Xtrackers S&P 100 Ex Top 20 ETF APARCH Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

13.29%

increased by 0.21%

1 Week

13.20%

increased by 0.12%

1 Month

13.04%

decreased by 0.04%

Analysis last updated: Monday, July 20, 2026 at 09:24 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Xtrackers S&P 100 Ex Top 20 ETF APARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 28, 2022 to Jul 17, 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

APARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1087
13.99***
α

ARCH

Response to squared shocks

0.0513
0.00
β

GARCH

Volatility persistence

0.7354
26.83***
γ

leverage

Additional response to negative shocks

1.0000
0.00
δ

power

Transformation power

1.9903
7.74***

Persistence:

0.837

Half-life:

4 days