This paper examines the implications for European investors of the recent European Union (EU) expansion to encompass former Eastern bloc economies. Cappiello et al (2006) question whether the formation of European Monetary Union (EMU) within the EU has increased the correlation of national assets? This clearly has important implications for investors wishing to diversify across national markets. What are the implications for growing asset correlations, if they are displayed? Should investors diversify outside the Central and Eastern European (CEE) countries? It could be argued that the former Eastern bloc economies constitute emerging markets which typically offer attractive risk adjusted returns for international investors. In this paper, we explore a number of aspects of this important issue and their implications for CEE based investors culminating in a Markowitz efficient frontier analysis of these markets pre and post EU expansion.
On 1st May 2004 the EU welcomed ten and on 1st January 2007 a further two more countries as part of its largest enlargement ever. The countries concerned are: Bulgaria, Czech Republic, Cyprus, Estonia, Hungry, Latvia, Lithuania, Malta, Poland, Romania, Slovakia and Slovenia. In this paper we investigate the interactions between the CEE bloc countries and apply time-series analysis to examine the relationship between stock market index return volatility. This includes a discussion of the volatility process of stock market indices as well as their correlations for the purpose of modelling volatility in these markets and assessing the implications for investors.