This study investigates multiple changes in persistence in the dividend–price and price–earnings ratio of the NASDAQ Composite Index. Recent time series methods that are capable of signalling and dating asset price bubbles are employed, in particular the method developed by Leybourne, Kim,...

This article examines the existence of lead-lag effects between the U.S. stock market (NYSE) and the Brazilian stock market (Bovespa), i.e., whether upward and downward price movements in the NYSE are followed, on average, by similar movements in Bovespa, which would enable predicting stock...

We investigate the empirical relationship between stock returns, return volatility and trading volume in the Brazilian stock market (Bovespa). Our sample contains stock return and trading volume data from a theoretical portfolio including stocks participating in the Bovespa Index (Ibovespa)...