This week, markets are poised for volatility with several key economic events on the horizon. On Monday, investors will be closely monitoring the market's response to Trump's newly imposed tariffs on the European Union. Midweek, attention shifts to the release of December's pending home sales data on Wednesday. Thursday will see the publication of the U.S. Q3 2025 GDP figures alongside November's PCE inflation data, both critical indicators of economic health. The week concludes with January's S&P Global PMI data on Friday. Additionally, around 10% of S&P 500 companies are set to report earnings, adding to the potential for market fluctuations.