Porsche Automobil Holding SE, usually shortened to Porsche SE, is a German multinational corporation primarily known as a holding company of Volkswagen Group with investments in the automotive industry. Porsche SE is headquartered in Zuffenhausen, a city district of Stuttgart, Baden-Württemberg and is majority owned by the Austrian-German Porsche-Piëch family. The company was founded in Stuttgart as Dr. Ing. h.c. F. Porsche GmbH in 1931 by Ferdinand Porsche (1875–1951) and his son-in-law Anton Piëch (1894–1952).

The DAX is a stock market index consisting of the 40 major German blue chip companies trading on the Frankfurt Stock Exchange. It is a total return index. Prices are taken from the Xetra trading venue. According to Deutsche Börse, the operator of Xetra, DAX measures the performance of the Prime Standard's 40 largest German companies in terms of order book volume and market capitalization. DAX is the equivalent of the UK FTSE 100 and the US Dow Jones Industrial Average, and because of its small company selection it does not necessarily represent the vitality of the German economy as a whole.