We empirically investigate the impact of option listing on the underlying stock efficiency by looking at the volume-volatility relation of underlying stock. We use a time- consistent bivariate VAR (Vector Autoregressive Regression) model that includes time duration between trades. This model...

This paper analyzes the special features of electricity spot prices derived from the physics of this commodity and from the economics of supply and demand in a market pool. Besides mean-reversion, a property they share with other commodities, power prices exhibit the unique feature of spikes in...

With hedgefunds, managers develop risk management models that mainly aim to play on the effect of de correlation.In order to achieve this goal,companies use the correlation coefficient as an indicator for measuring dependencies existing between(i)the various hedge funds strategies and share...

Outliers can lead to model misspecifications, poor forecasts and invalid inferences. Their identification and correction is therefore an important objective of financial modeling. This paper introduces a simple method to detect outliers in a financial series. It uses an AR(1)–GARCH(1,1) model...

This article explores the influence of social background and social situation on the smoking career. This study is based on a sample of 4.473 individuals who answered the 2006 French Health, Health Care and Insurance Survey. The results of a non-parametric analysis and of a stratified Cox model...

The purpose of this article is to analyse the efficiency of the repayment incentive mechanisms used for individual microcredit, the guarantor mechanism in particular. Little academic research has been devoted to this instrument whereas it is very frequently used. Churchill (1999) notably...

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...

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...

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...

Ce chapitre traite des analyses longitudinales à savoir des analyses cherchant à souligner l'évolution (ou la non évolution) d'un phénomène dans le temps. Il présente dans un premier temps les bases de ces analyses, en insistant sur la conception du temps, la notion d'évènement et en...