Resumen
The microstructure approach to exchange rates have received special attention in recent years, particularly because it highlights the existence of asymmetric information in this market. The Brazilian future FX market data provided from BM&F was used to test the private information effects of trading on prices. The structural VAR results confirm the existence of asymmetric information in this market, indicating that roughly 50% of all efficient price variation is due to the private information of the order flow. Additionally, the order flow observation allows the informed and uninformed arrival rates estimation, which we use to calculate the probability of information-based trade (PIN). High PIN value leads to wide spreads, which reduces the market liquidity. The PIN results about 1.53% indicate the liquidity of Brazilian future FX market is quite high, what impound fewer trading costs for the uninformed agents.