DP5352 Non-synchronous Trading and Testing for Market Integration in Central European Emerging Markets

Author(s): Peter C Schotman, Ania Zalewska
Publication Date: November 2005
Keyword(s): emerging markets, Kalman filter, market efficiency, market integration, non-synchronous trading
JEL(s): G14, G15
Programme Areas: Financial Economics
Link to this Page: cepr.org/active/publications/discussion_papers/dp.php?dpno=5352

The paper contributes to the literature on integration of stock markets by addressing the issue of non-synchronous trading. We argue that controlling for time differences in trading hours of stock markets is important and show that time-adjustment improves estimates of market integration. We also show that using weekly frequency does not sidestep the consequences of the time-match problem but leads to significant loss of information. We show that the nature of integration of stock exchanges operating in the Czech Republic, Hungary, and Poland with the stock markets of Germany, UK and US in the period 1994-2004 is very dynamic. Finally, the study shows that the autocorrelation of returns on the main market indexes of the emerging markets have declined over time.