Cet ouvrage décrit l'organisation d'un marché d'actions et expose les concepts de base de la gestion de portefeuille et des risques : la rentabilité, la volatilité, l'hostilité au risque, les principes et les avantages de la diversification. Il présente les modèles linéaires...

The purpose of this paper is to study the effect of operational, and market risks disclosures on investors’ disagreements about French firms’ value. The paper provides evidence on risks reporting efficiency in reducing investors’ disagreements about the implication for firm’s value of...

Selon les travaux de Hamada (1972), Ryan (1997) et Pae (2002), l’incertitude des investisseurs sur la valeur est liée aux sources de risques sectoriels et inhérents. Depuis, peu de travaux se sont intéressées à la relation entre les informations liées aux sources de risques et le marché...

The main task of this paper is to confront two classical measures of default risk of the issuer, the rating and the spread. The first is attributed by agencies specialized in this activity (Standard and Poor's or Moody's) while the second results directly from the market price of the bond. This...

Because IPO mechanisms determine both the initial trading price and the allocation of newly-listed firms' shares, they have financial and strategic consequences for shareholders. For that reason, it is of interest to analyse the relative advantages and disadvantages of the different procedures...

This article explains the role of the convenience yield in the relationships linking spot and futures prices in commodity derivatives markets. First, this variable restores the non arbitrage relationship between the prices of the underlying asset and the derivative instrument. Second, it allows...