[9] From 1994, under the company name Madison Clothing, he took over the distribution of international brands, such as Pepe Jeans, Stone Island and C.P.

[10][11] In 1997, the company got the tender to become the sales agency for Tommy Hilfiger in Grieder's native Switzerland, Austria and Eastern Europe,[1][12] responsible to establish the brand there.

[18] In mid-June 2020, the German fashion company Hugo Boss announced that Grieder would become their CEO.

[25] As Stephan Knieps wrote in his Wirtschaftswoche commentary, the contract extension is attributed, among other factors, to the results of the new marketing strategy.

[26] In addition, Grieder's business strategy also included the introduction of brands for a broader and younger audience.