The American markets closed with contained losses, and the volume continued to suffer a decrease. The session was marked by the publication of macroeconomic data, which did not influence the trend of major indexes but provided investors and economists with useful information about the US economy. GDP growth relative to the third quarter of the year continues to be revised upwards. According to the Commerce Department, the US economy grew 3.50% in that period, surpassing the 3.20% calculated in November and the forecasts of 3.30%. Starts today the period that corresponds to the so-called Santa Claus Rally. This period includes the last five sessions of the year and the first two of the new year. Over the past 30 years, the S & P performed 26 times, with an average gain of 1.74%. However, given the gains made by Trump Rally, the odds of a strong Santa Claus Rally will probably be lower than in previous years.