Last Friday, the US stock market ended lower, with investors showing some concern regarding the Fed decision at the next meeting. Still, the Nasdaq managed to end the eighth consecutive week of gains since April 2010. The session was marked by the traditional weak liquidity and the absence of significant catalysts or business nature, as well as macroeconomic, so there has been another day without any sign to help investors to infer about the actions of the Central Bank. The minutes of the last meeting of the Fed revealed on Wednesday, did not help much in this regard. Moreover, in recent days, investors have also weighed their decisions based on the words of some members of this body as well as the crude oil price behavior. On Thursday, the President of the Federal Reserve of San Francisco, John Williams, joined the group of members that supports a rise in interest rates in the coming months, stating that if the Fed wait too long, such an attitude can entail costs for the economy. In this context, attention is turning to the statements of Janet Yellen in Jackson Hole Conference scheduled for August 26, Friday, the day will be published important data for the country’s economy, such as GDP and the confidence index of consumers.