Country and industry factors in returns: evidence from emerging markets’ stocks

This study examines the influence of country and industry factors on the cross-sectional variance and correlation structure of returns. I use new data on emerging markets’ stocks obtained from the Emerging Markets Data Base. I find that emerging markets’ returns are mainly driven by country factors, as it was shown previously in studies for mature markets, and that cross-market correlation is not affected by the industrial composition of the indices. These results have important implications in regard to international portfolio diversification: cross-market diversification seems to be a better bet than cross-industry diversification. A finer industry partition shows, however, that ignoring the industrial mix leads to an important loss of diversification benefits. Q 2000 Elsevier Science B.V. All rights reserved. JEL classification: G15 International Financial Markets