The company Deutsche Wohnen is also relegated to the SDax. It is being pushed out by the bioethanol manufacturer Verbio, which is moving up from the SDax to the MDax. The chip manufacturer Elmos Semiconductor and the telecommunications supplier Adva Optical are also moving up to the SDax. The real estate developer Instone and the pharmaceutical company Medios are no longer listed in the small-cap index.

The changes will be implemented on December 19, as Deutsche Börse further announced. She regularly checked the composition of the Dax. In addition to general standards, the criterion for promotion and relegation is market capitalization.

The VW subsidiary Porsche only went public at the end of September amid turbulent times on the financial markets. Measured in terms of the value of the shares, the IPO was the most significant in Germany since Deutsche Telekom went public in 1996.

Porsche is 100 percent owned by Volkswagen, has its headquarters in Stuttgart-Zuffenhausen and employs around 37,000 people. Last year, Porsche delivered more than 300,000 vehicles, with profits totaling over five billion euros.