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V-Lab

Deutsche Borse SDAX Performance Index (XETRA) Asy. Power MEM Volatility Analysis

Volatility prediction for Monday, August 17th, 2026

1 Day

11.74%

decreased by 0.94%

1 Week

11.55%

decreased by 1.13%

1 Month

11.04%

decreased by 1.64%

Analysis last updated: Friday, August 14, 2026 at 07:56 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Deutsche Borse SDAX Performance Index (XETRA) APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 5, 2013 to Aug 14, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 59% more than equivalent positive returns. The volatility power δ = 0.80 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.

μ

APMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0455
23.12***
α

ARCH

Response to squared shocks

0.1775
43.37***
β

GARCH

Volatility persistence

0.7947
162.14***
γ

leverage

Additional response to negative shocks

0.2831
24.75***
δ

power

Transformation power

0.7970
15.75***

Persistence:

0.935

Half-life:

10 days