摘要:This purpose of this study is to explore the behavior of returns generated from Large-, Mid-, and Small- Caps European stocks act differently and should be taken into consideration before building international portfolios. The result showed that the returns of Mid- and Small-Cap markets stocks have low correlations with both returns of World market and the U.S. country indices; while Large-Cap funds have high correlations. Investors interested in European stock market can obtain potential gains if they consider including Mid- and Small-Cap stocks in their portfolio.