In this paper we consider the value of Google Trends search data for nowcasting (and forecasting) GDP growth for a developed (U.S.) and emerging-market economy (Brazil). Our focus is on the marginal contribution of "Big Data" in the form of Google Trends data over and above that of traditional...

This paper examines the impact of the introduction of the Euro currency on the market efficiency of ten of the most developed European stock markets during the period 1988-2012. We use an autocorrelation test, a runs test, various formulations of the variance ratio test and the nonlinear BDS...