Wolff founded investment companies Marchfifteen (1998) and Marchsixteen (2004), which initially focused on internet and technology company investments. Since 2003, Wolff has concentrated on strategic investments in medium-sized industrial and listed companies.Autosport.com: Williams sells stake in team Investments included the German HWA AG, in which Wolff bought a 49% stake in 2006 listing the company on the stock exchange in 2007. The company ran the Deutsche Tourenwagen Masters race program for Mercedes-Benz, developing F3 engines and the Gullwing Mercedes-Benz SLS AMG GT3 racing car.
