This thesis questions the emergence of a new Swiss banking elite. It relies on a biographical database composed of executive directors and non-executive directors of 37 Swiss banks (N = 487) as well as a series of 20 biographical interviews. First, I show that there is a polarization within the Swiss banking elites, between an international pole on the one hand and a national pole on the other. The new elite is rather located on the international pole. Second, I establish a typology of the geographical mobility of the careers of banking elites. I identify four types attesting the plurality of the career paths: national careers, early international careers, international careers and European careers. Thirdly, I identify individual pathways leading to the hierarchical top of a bank. Through this career analysis, I show how the social space of banking elites is highly differenciated. Fourth, I analyze dispositions and strategies of presentations of self by banking elites. I show an opposition between the figure of the wealh manager and the figure of the investment banker, embodied by a new elite. In conclusion, I affirm that there is indeed a new banking elite, characterized by its internationality and its relationship to performance. However, this new group did not replaced the old ones and Swiss banking elites remain a group defined by its plurality.