International audienceBecause IPO mechanisms determine 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 made available to candidate firms. A survey of listing practices in fifteen European countries shows the increasing prominence of book-building. Although this IPO mechanism is probably the only way to go public for young and risky firms that could not list otherwise, auctions run by exchanges may enhance the competitiveness and efficiency of the primary markets for issuers and investors. Further, in the prospect of integrated European stock markets, it appears necessary to pursue the harmonisation of IPO procedures and listing requirements that has started with the enforcement of the Prospectus Directive
Alternext a été créé en 2005 pour accueillir les entreprises en forte croissance. À partir d’un échantillon d’entreprises introduites sur ce marché entre 2005 et 2009, par le biais d’une offre au public, cet article vise trois objectifs. Premièrement, il rend compte des caractéristiques opérationnelles et financières des entreprises avant et après leur introduction. Deuxièmement, il met en évidence l’existence d’une sous-évaluation initiale et d’une sous-performance à trois ans relativement faibles. Et troisièmement, il renseigne le lecteur sur l’activité d’émission du marché primaire d’Alternext au moment de l’introduction et sur les trois années qui l’ont suivie. Classification JEL : G10, G23, G32, L25.
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