Developing a model with a switching mechanism, we show how complex dynamics can be generated even though heterogeneity arises among agents with the same trading rules (fundamentalists). We assume that there are two experts which are imitated by other operators. We show that (i) market...

Cet article examine empiriquement les déterminants de l’utilisation des produits dérivés par un échantillon de sociétés non financières françaises. Les résultats des tests font apparaître le levier (le proxy des coûts de la détresse financière), le rendement des dividendes, la...

We study portfolio allocation and characterize contracts issued by firms in the international financial market when investors exhibit ambiguity aversion and perceive ambiguity in assets issued in foreign locations. Increases in the variance of their risky production process cause firms to issue...