Diversificação internacional para carteira de investimentos

Abstract

Since the beginning of trading in stock exchanges there are studies concerning its behaviour, evolution and economic-financial models for many purposes. Theories like Markowitz and Sharpe have become classicals, and are still used nowadays for historical data studies. In this context, the aim of this research was to analyse the correlations between the Market indexes of different countries, from 1999 to 2014. Moreover, to verify whether there was correlation or not between the stock exchange indexes, foreign currency variation, geographical distance and the fluctuation of stock exchange indexes. The methodology was the survey of weekly historical data from closing prices and geographical distance. Data was obtained through three-yearly cuts for analysing its evolution and the conclusion of the proposed aim. It could be concluded that in all periods, there was a relevant majority of significances in correlations of stock Exchange returns at 1%. The same significance could not be observed for the foreign currency return correlations at 1%. It could also be concluded that there is statistic significance at 1% between the independent variable foreign Exchange correlation, and the dependent variable stock Exchange indexes correlation. Moreover, in most periods, the same statistic significance can be seen for the independent variable geographical distance, together with the dependent variable stock Exchange indexes correlation.