Black et Scholes ont proposé en 1973 un modèle de marché financier qui conduit à une formule simple pour calculer le prix d'une option européenne sur un actif boursier. Bien que les formules de Black-Scholes soient explicites, le modèle repose sur certaines hypothèses qui ne correspondent...

L'objectif de cet article est de confronter deux mesures classiques du risque de défaillance de l'émetteur, la notation et l'écart de rentabilité. La première est attribuée par des agences spécialisées dans cette activité (Standard and Poor's et Moody's) alors que la seconde résulte du...

French abstract: Le présent papier formalise un nouveau modèle de dynamique du système des prix du marché action, capable de saisir un large spectre de phénomènes renseignés par la littérature académique financière. Le modèle s’attache particulièrement à rendre compte de trois...

Information processing filters out the noise in data but it takes time. Hence, low precision signals are available before high precision signals. We analyze how this feature affects asset price informativeness when investors can acquire signals of increasing precision over time about the payoff...

This study assesses the effect of financial development on income inequality in Côte d'Ivoire, using a multidimensional indicator of financial development that incorporates financial inclusion. We use ARDL and quantile regression methods to regress income inequality (measured by the Gini index)...

This study assesses the effect of financial development on income inequality in Côte d'Ivoire, using a multidimensional indicator of financial development that incorporates financial inclusion. We use ARDL and quantile regression methods to regress income inequality (measured by the Gini index)...

This study examines the impact of information security breaches on the stock returns on French companies. Using the event study methodology, we provide insights on the effect of cyberattack announcements on the market value of French companies from 2009 to 2019. We show that following...

This paper argues in an Austrian-Business Cycle's perspective that all the conditions are met again to have new crisis. The Federal Bank treats, always, a crisis of liquidity excess by low interest rate, i.e. "cheap money policy". When Federal Bank will have to rise its rates, the crisis will...

We apply several recently proposed tests for structural breaks in conditional variance and covariance dynamics. The tests apply to both the class of ARCH and SV type processes and allow for long memory features. We also apply them to data-driven volatility estimators using high-frequency data...