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V-Lab

Siemens AG MF2-GARCH Volatility Analysis

Volatility prediction for Tuesday, August 25th, 2026

1 Day

29.07%

decreased by 0.63%

1 Week

29.64%

decreased by 0.06%

1 Month

31.02%

increased by 1.32%

Analysis last updated: Tuesday, August 25, 2026 at 06:39 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Siemens AG MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Aug 21, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

56
α

ARCH

Response to squared shocks

0.0184
8.78***
β

GARCH

Volatility persistence

0.8693
129.86***
γ

leverage

Additional response to negative shocks

0.0817
20.22***
λ₁

tau intercept

Baseline long-term coefficient

0.0092
2.49**
λ₂

forecast adj.

Forecast performance sensitivity

0.0251
2.78***
λ₃

tau persistence

Long-term factor persistence

0.9720
97.50***

Persistence:

0.929

Half-life:

9 days