In this work we measure the evolution of the long-range dependence phenomenon of returns and volatilities of nominal British exchange rates (British pound against US dollar) futures contracts negotiated on the Chicago Mercantile Exchange from 1986 to 2004. The measurement employs the R/S classic...

This paper presents empirical evidence of short and long-run predictability in stock returns for European transition economies. We employ Variance Ratios with a bootstrap methodology to test for short-run predictability, which is present in most countries. We also estimate Hurst exponents to...

This study applies data envelopment analysis and stochastic frontier approach to a sample of Indian commercial banks to discuss the inconsistencies between these models. We find that DEA average efficiency scores are, in general, lower than those from the SFA model. However, both models indicate...

Several specialists and authorities blame inflation targeting (IT) regime for not responding to the increasing systemic risk and the development of asset bubbles. Nevertheless, we employ a database with commercial banks from 71 countries between 1998 and 2012, and we present evidence that: banks...

Recent literature has focused on the study of systemic risk in complex networks. It is clear now, after the crisis of 2008, that the aggregate behavior of the interaction among agents is not straightforward and it is very difficult to predict. Contributing to this debate, this paper shows that...

This paper investigates the topological properties of the Brazilian stock market networks. We build the minimum spanning tree, which is based on the concept of ultrametricity, using the correlation matrix for a variety of stocks of different sectors. Our results suggest that stocks tend to...