Stock markets have done pretty well this summer, boosted largely by speculation that central banks will pump more money into world economies.
The Dow Jones industrial average gained 1.6% from July 1 to Aug. 31. With Wall Streeters coming back from summer vacations after a long Labor Day weekend, investors will be confronted with market-moving news this week.
The Dow was down 26 points, or 0.2%, to 13,065 in early trading Tuesday. The broader Standard & Poor's 500 was down 1 point, or 0.1%, to 1,405. The Nasdaq was down 3 points, or 0.1%, to 3,064.
Manufacturing and construction-spending reports were due out later Tuesday morning.
On Thursday, the European Central Bank will meet and potentially announce a bond-purchasing program for heavily indebted countries such as Greece, Spain and Italy. ECB president Mario Draghi dropped hints about the program, according to news reports.