Size has become a significant factor in explaining returns. According to the size effect, smaller capitalization stocks on average outperform larger capitalization stocks over long periods of time. This paper first documents the traditional size effect on the French market for the 1986-1998...

L’accélération des échanges internationaux de capitaux a révélé au grand public le rôle déterminant joué par le fonctionnement des marchés financiers. La Bourse est dans ce cadre un acteur central, lieu de rencontre – réel et virtuel – entre l’offre et la demande de capitaux....

Open market share repurchases are strictly regulated to prevent companies from profiting from insider information. We examine compliance with these rules in France, where the mandatory disclosure of share repurchases provides detailed information on repurchases actually undertaken. Using a...

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...

Research on the impact of open market share repurchases has been hindered by the lack of data available on actual share repurchases in many countries, including the US. Using a previously unused database containing detailed information on 36,848 repurchases made by 352 French firms, we show that...

The objective of this thesis is to comprehend the behaviour of firms repurchasing their own shares, listed in Paris stock exchange, and liquidity contractors, by examining the impact of their trades on market liquidity and share return. More specifically, the thesis focuses on three elements...

We examine how ownership concentration and the separation of ownership and control affect market liquidity in France. We find that firms with a large insider blockholder exhibit significantly lower liquidity. Different methods of concentrating control affect liquidity in different ways. Pyramid...