Against an uncertain geopolitical backdrop, investors are looking at further confirmation of an improving U.S. job market with two data points that come out on Tuesday.
The National Federation of Independent Business releases its Small Business Optimism Index at 9 a.m. on Tuesday.
"Small business should be strong. Hiring should be strong," said Alan Skrainka, chief investment officer, Cornerstone Wealth Management. "Small business makes up 90 percent of all new hiring."