A model of realized variance-covariance is proposed using a portfolio with the most liquid stockassets of Ibovespa. The purpose is to evaluate the economic gains associated with following avolatility timing strategy based on the model’s conditional forecasts. Comparing with...

The estimation of the impact of macroeconomic announcements in the Brazilian futuresmarkets is used to uncover the relationship between macroeconomic fundamentals andasset prices. Using intraday data from October 2008 to January 2011, we find thatexternal macroeconomic announcements dominate...

Brazilian Foreign Exchange (FX) markets have a unique structure: most trades are conducted in the derivatives (futures) market. We study price discovery in the FX markets in Brazil and indicate which market (spot or futures) adjusts more quickly to the arrival of new information. We find that...