The rapid proliferation of Islamic-oriented investments has placed an added urgency on better understanding their risk profile. With respect to Islamic stock market indexes, this concern is more pertinent to the extent that indexes could be subject to manipulation, and because they are often...

This study investigates the components of the mobile telephone demand in several countries in the Middle East and North Africa (MENA) between 1995 and 2007. We find that the magnitude of demand elasticities do not entice collusive behavior between service providers because the effect of price...