Once traders return from Monday's Presidents Day holiday, data on the strength of the U.S. consumer will be in focus, with the Commerce Department's monthly retail sales report and earnings results from retail giant Walmart (WMT) each on tap. A bevy of housing data is also due for release. Consensus economists are looking for retail sales to rise by 0.9% in January over December, according to Bloomberg-compiled data. This would mark the first increase in three months after a year-end slump, and coincide with the rollout of stimulus checks to most Americans.