The recent period has highlighted a well-known phenomenon, namely the existence of a positive bias in experts' anticipations. Literature on this subject underlines optimism in the financial analyst community. In this work, our significant contributions are twofold: we provide explanatory bias...

The use of the trading halts is a practice common to all markets. However, the advantages and the disadvantages of the measurements are regularly discussed. The partisans think that the trading suspensions or the price limits make it possible to the investors to have time to react to the new...

Aujourd'hui, les réglementations de toutes les places boursières prévoient des procédures d'interruption de cotation. Le rôle de ces dispositifs est de permettre l'information des participants au marché et de protéger les intérêts des petits porteurs. Il s'agit ainsi de garantir...

Les interruptions de cotation réglementées d'Euronext Paris et de toutes les autres places boursières ont pour but de réduire les asymétries d'informations et la volatilité et de permettre l'émergence d'un consensus. L'usage de ces interruptions est très fréquent sur le marché boursier...

Le rôle des interruptions de cotation est de permettre l'information des participants au marché et de protéger les intérêts des petits porteurs. Il s'agit ainsi de réduire les asymétries d'information et la volatilité. L'objectif de notre travail est d'appréhender empiriquement les...

In this paper, we shed light on the selection of the benefi ciaries from the French competitiveness cluster policy which was launched in 2005 and extended to 2012. We disentangle the selection and self-selection eff ects, as emphasized in the theoretical literature on regional and industrial...

Will employment instability be the employment pattern tomorrow? Many studies support this view which is first discussed on the basis of various statistical studies already carried out. A general trend of employment instability is not proved to be true by statistical data. These data show that...

Analyse de l'accaparation d'actifs (asset grabbing) lors des privatisations, sur les marchés financiers et dans le "shadow banking"par des oligarques comme émergence d'une économie où le "gagnant rafle tout" (winner take all) formant un secteur "cupidaliste". Son apparition dans l'économie...

In 1998 the Fifty-first World Health Assembly passed the "health-for-all policy for the twenty-first century". During this assembly the Member States of the World Health Organization (WHO) reaffirmed their commitment to the principle that "the enjoyment of the highest attainable standard of...

A government agency delegates to a provider (hospital, medical gatekeeper, school, social worker) the decision to supply a service or treatment to individual recipients. The agency does not perfectly know the distribution of individual treatment costs in the population. The single-crossing...