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...

Privately informed owners securitizing assets signal positive information by retaining sufficient interest. Signaling provides social benefits, allowing uninformed investors to insure without fearing adverse selection. Instead of signaling, owners of high value assets may prefer a pooling...

This article examines how the introduction of an ETF replicating a stock index impacts on the liquidity of the underlying stocks when the ETF market involves liquidity providers (LPs). We find that index stock spreads decline, relative to those of non-index stocks, after the introduction of the...

This paper examines the determinants of the time it takes for an index options market to be brought back to efficiency after put-call parity deviations, using intraday transactions data from the French CAC 40 index options over the August 2000 - July 2001 period. We address this issue through...

I propose a model in which firms can convey their quality by listing on a stock exchange. To list, firms must comply with costly listing requirements allowing investors to recognize imperfectly their quality. A profit maximizing exchange may set listing requirements leading to high information...

Based on a sample of 15 European countries, this survey analyses various features of the European IPO (Initial Public Offering) market over the period from 1995 to 2004: listing requirements, IPO-mechanism choices, performance and secondary market liquidity. First, the comparison of national...

We investigate the link between employee ownership and price levels of stocks. Using a comprehensive sample of firms in the Société des Bourses Françaises (SBF) 120 Index from 2000 to 2007, we document a negative correlation between share price levels and employee ownership. This suggests...

In this thesis we deal with different topics in financial mathematics, that are all related to market imperfections and to the fundamental technique of utility maximization. The work consists of three parts. In the first one, which is based on two papers, we consider the problem of optimal...