The risk-return trade-off being the very substance of finance, volatility has always been an essential parameter for portfolio management. Moreover, the generalization of the use of derivatives has placed in the forefront the concept of volatility risk: i.e. the model risk generated by treating...

We consider sequential data that is sampled from an unknown process, so that the data are not necessarily iid. We develop a measure of generalization for such data and we consider a recently proposed approach to optimizing hyper-parameters, based on the computation of the gradient of a model...

We study the development of a duopoly industry - evolution of firm capacities and competitive behavior - in a continuous-time real-options model of capacity investment. Our methodology allows the evaluation of investment options and exercise rules in a strategic setup. In the initial industry...

The purpose of the regulated interruptions of quotation on Stock exchange markets is to reduce asymmetries of information and volatility and to allow the emergence of a consensus. The use of these interruptions is very frequent on the French stock exchange market for the values included in the...

The purpose of the regulated halts on stock exchange markets is to spread the information on the market and to protect the interests of the small shareholders. The aim of this work is to empirically investigate the trading halts on the French stock exchange market. We proceed to a detailed...

Le rapport fait le point sur les interactions entre la volatilité des prix du pétrole et les stratégies des acteurs financiers. Il présente également les réflexions et actions en cours au niveau international pour améliorer le fonctionnement des marchés pétroliers. Et au final, il...

We analyze empirically the determinants of Eurozone Treasury bills yields. Market microstructure as well as macroeconomic variables are found to significantly impact yields. Secondary trading in a centralized transparent electronic limit order book enhances liquidity and thus reduce yields....