Long term family fortune preservation is a matter of human behavior; it is a dynamic process of activity or group governance that has to be reenergized successfully in each successive generation to overcome the threat of falling into entropy. Each successive generation has to reaffirm its participation in such government system.Family enterprises are the fundamental actors of the economic activity, and also constitute a stability factor of the productive system, because the majority of them is small or medium-sized (SMEs), and that is why it is interesting to investigate their financial behavior.There is little knowledge concerning financing decisions of enterprises on emerging markets. There is a particular need of empirical work that identifies the financial patterns of developing countries enterprises. It is possible that these enterprises are creating a new financial structure that results convenient for their particular environment. / Long term family fortune preservation is a matter of human behavior; it is a dynamic process of activity or group governance that has to be reenergized successfully in each successive generation to overcome the threat of falling into entropy. Each successive generation has to reaffirm its participation in such government system.Family enterprises are the fundamental actors of the economic activity, and also constitute a stability factor of the productive system, because the majority of them is small or medium-sized (SMEs), and that is why it is interesting to investigate their financial behavior.There is little knowledge concerning financing decisions of enterprises on emerging markets. There is a particular need of empirical work that identifies the financial patterns of developing countries enterprises. It is possible that these enterprises are creating a new financial structure that results convenient for their particular environment.

Cette thèse tente d’analyser qualitativement et quantitativement les impacts, parfois déstabilisateurs, de l’excès de liquidité mondiale sur les prix des actifs des marchés émergents. Cet excès de liquidité mondiale s’est notamment matérialisé par un essor des investissements de portefeuille vers les marchés émergents, essor dont l’étude est devenue un thème central que ce soit pour les décideurs politiques ou pour l’industrie de la gestion d’actifs. A ce titre, nous nous proposons de contourner les faiblesses des données de la Balance des Paiements en construisant un indicateur non-retardé et à haute fréquence des flux de portefeuille, et ce, grâce aux données EPFR. La dynamique de recherche de rendement induite par la mise en place de politiques monétaires non conventionnelles par les principales banques centrales des marchés développés a eu pour effet une forte inflation des prix des actifs, au premier rang desquels figurent les marchés d’actions émergents, marchés sur lesquels de potentielles bulles ont pu faire leur apparition dans la période qualifiée de « Nouvelle Normale ». / This thesis aims to qualitatively and quantitatively analyse the sometimes destabilising impacts of global excess liquidity on emerging markets asset prices. This global excess liquidity has particularly manifested in a rise in portfolio capital flows towards emerging markets. The study of this rise has become a central topic both for policymakers and asset managers. As such, we propose to circumvent the Balance of Payments weaknesses by building a non-lagging and high frequency indicator of portfolio capital flows using the data provided by EPFR. The search for yield trend caused by the unconventional monetary policies undertaken by the main developed markets central banks has caused significant inflation in asset prices, most prominently in emerging equity markets, where potential bubbles have appeared during the so-called “New Normal” period.