PPR and Yoox have signed a letter of internet to create a joint venture that would take care of the internet sales of some of the French group's luxury goods brands, such as Yves Saint Laurent or Sergio Rossi. The Gucci brand would be excluded. Yoox, which has a global reach, already hosts the online shops of about 30 fashion brands including Armani, Diesel or Dolce & Gabbana. The announcement lifted the stock market value of Yoox just as its young founder, Federico Marchetti, raised his own stake in the company from 6.59 to 7.07 percent.