Internet offers real openness on pricing policy increasing the buyer's market power. Higher competition should result from an easier comparison of the offers with, as a consequence, price decrease and lower margins. This article explores the validity of such an assumption and studies major...

In Mali, the situation of cotton growing households has traditionally been considered as more favorable than that of food crop producers. However, official statistics on poverty suggest that the cotton growing region of Sikasso is among the poorest regions of the country and that cotton...

Islamic and conventional investment funds have the same purpose. However, unlike conventional funds, Islamic funds offer different investment contracts and have to invest in accordance with a set of selection rules. This dissertation focuses on developing theoretical and empirical analysis...

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...

This article is centred on the volatility of commodity prices. It presents the instruments offering a protection against volatility and shows how they can be employed. The first section exposes these derivative instruments. It distinguishes them in step with the need they respond and the way...

The aim of this work consists of a panoramic study of trading halts (trading reservations and suspensions) in the different world stock Exchanges. We draw up an inventory of the regulatory environments. We then compare the practices on the international financial markets. We show that the...

We discuss the relevance of the volatility as a risk measure. By considering recent studies on tick by tick data and specific features of derivatives, we introduce alternative measures to take into account the time and volume effects, or the distributional asymmetry.

The IASB is developing proposals to require that companies recognize changes in the fair values of almost all financial instruments in income. Net income, comprehensive income, and the proposed “full fair value income” are likely to portray firm performance and risk very differently,...

Aujourd'hui, les réglementations de toutes les places boursières prévoient des procédures d'interruption de cotation. Le rôle de ces dispositifs est de permettre l'information des participants au marché et de protéger les intérêts des petits porteurs. Il s'agit ainsi de garantir...

Cet article étudie l'impact de 15 évènements reliés à l'IAS 39 sur les cours boursiers des banques Françaises. Les résultats prouvent que les évènements qui annoncent une augmentation (diminution) de la probabilité de l'adoption de la norme donnent de rentabilités anormales négatives...