A discrete time probabilistic model, for optimal equity allocation and portfolio selection, is formulated so as to apply to (at least) reinsurance. In the context of a company with several portfolios (or subsidiaries), representing both liabilities and assets, it is proved that the model has...

The possible existence of a link between the structure of firms' equity and profitability is a recurrent question among economists. The primary objective of this article is to provide a critical analysis of the two most recent hypotheses on the subject, one put forward by Demsetz, and the other...

We investigate the capital structure dynamics of a panel of 766 firms from five Western Europe countries: France, Italy, UK, Germany and Switzerland over the period 1996-2007. If firms adjust their capital structure towards an optimal level with adjustment costs affecting this optimization...

In this paper, we want to characterize the optimal health insurance contract with adverse selection and moral hazard. We assume that policyholders differ by the permanent health status loss and choose an unobservable preventive effort in order to reduce the probability of illness which is...

This paper investigates the impact of health risk on insurance contract with hazard moral. We use a bi-dimensional utility function (wealth and health status). We prove that the type of health risk influences the equilibrium of insurance market. A full coverage is possible with moral hazard....

An F-cone is a pointed and generating convex cone of a real vector space that is the union of a countable family of finite dimensional polyedral convex cones such that each of which is an extremel subset of the subsequent one. In this paper, we study securities markets with countably many...

Dans un contexte de vieillissement de la population, différents scenarii sont envisagés pour réformer l'organisation et le financement de la prise en charge des personnes âgées dépendantes. La place de la prévoyance individuelle dans le financement de la dépendance est à ce titre...

Insurance coverage for natural disasters remains low in many exposed areas. A limited supply of insurance is commonly identified as a primary causal factor in this low insurance coverage. The French overseas departments provide a rare natural experiment of a well-developed supply of natural...

The European Union is completely redesigning the system of prudential supervision of insurance institutions as part of the Solvency Directive II. During its implementation, the Directive, which can be compared to the Basel II prudential standard, was analysed above all in terms of actuarial...