Cet article a pour objet de montrer que face à l'instauration d'un cadre juridique prônant un modèle bancaire universel et unique (décloisonnement des activités, fin du cylindrage de clientèle) et face aux pressions isomorphiques institutionnelles (DiMaggio et Powell, 1983) s'exerçant sur...

This article proposes a new approach to liquidity on financial markets : do not considers liquidity individually, or stock by stock, but takes a common or systematic approach. Common factors in liquidity do exist, and they can cause the liquidity of each stock to vary simultaneously. This point...

Why do investors keep different opinions even though they learn from their own failures and successes? Why do investors keep different opinions even though they observe each other and learn from their relative failures and successes? We analyze beliefs dynamics when beliefs result from a very...

Présentation des bases de la programmation en VBA sous Excel : nature et organisation des objets, architecture des projets, structures de contrôle, doublée d'une approche financière (analyse technique des rentabilités boursières, gestion de portefeuille, évaluation des options).

The aim of this paper is to determine whether individuals exhibit a behavioral bias towards pessimism in their beliefs, in a lottery or more generally in an investment opportunities framework. For this purpose, we design a field survey on a sample of 1,540 individuals aiming at deriving a...

In this thesis, we propose to test a new behavioral explanation of the equity premium puzzle. This work is based on the heterogeneous beliefs model of Jouini and Napp (2007) according to which, pessimism of investors at the aggregate level leads to very important risk premiums. In this model,...

With hindsight, the subprime crisis highlighted the importance of high correlation regimes and systemic risks and contagion. It is mainly about them that this paper will focus on, in the context of the liquid index tranches but also for European Prime RMBS and SME securitizations.