On Thursday, shares of Volkswagen's sports car brand Porsche began trading, marking both the second-largest

 second-largest listing in German history and a new stage in the sometimes tumultuous relationship between

between the two automakers that dates back decades.

At the end of September or the beginning of October

Volkswagen reveals its plans to list Porsche.

On September 29, Porsche AG shares begin trading at 84 euros per share on the Frankfurt Stock Exchange,

above the issuance price of 82.5 euros.

($1 = 0.9984 euros)

February - According to a suggested structure that would give Porsche SE a controlling minority in the self-titled automaker,

Volkswagen and Porsche SE say they are looking at a potential initial public offering of Porsche AG.