This study examines the return behavior of 15 emerging equity markets for persistent deviations from the fundamental value hypothesis. The duration dependence test shows that rational expectations bubble do not cause deviations from fundamental value in any of the markets. Markov chain test...

Using the Tsay (1988) outlier identification methodology on daily log-returns of 16 commodity spot price series and 25 commodity index series, this study assesses the impact significant and unexpected news announcements had on volatility between January 1, 1997 and December 31, 2007. Results...