Volgens Wikipedia:
Corporate restructuring[edit]
Porsche headquarters in Stuttgart, Germany
Porsche SE was created in June 2007 by renaming the old Dr. Ing. h.c. F. Porsche AG, and became a holding company for the families' stake in Porsche Zwischenholding GmbH (50.1%) (which in turn held 100% of the old Porsche AG) and Volkswagen AG (50.7%).[19][20] At the same time, the new Dr. Ing. h.c. F. Porsche AG (Porsche AG) was created for the car manufacturing business.
In August 2009, Porsche SE and Volkswagen AG reached an agreement that the car manufacturing operations of the two companies would merge in 2011, to form an "Integrated Automotive Group".[21][22] The management of Volkswagen AG agreed to 50.76% of Volkswagen AG being owned by Porsche SE in return for Volkswagen AG management taking Porsche SE management positions (in order for Volkswagen management to remain in control), and for Volkswagen AG acquiring ownership of Porsche AG.
As of the end of 2013, the 50.76% control interest in VW AG is the predominant investment by Porsche SE, and Volkswagen AG in turn controls brands and companies such as Volkswagen, Audi, SEAT, Škoda, Bentley, Bugatti, Lamborghini, Porsche AG, Ducati, VW Commercial Vehicles, Scania, MAN, as well as Volkswagen Financial Services.[23]