The S&P 500 rose less than one point at 4 p.m. in New York.
An S&P index of homebuilders sank 2.6 percent, the most since September 2016. Home Depot Inc. lost 1.6 percent.
The Nasdaq 100 Index lost 0.2 percent as Facebook Inc. lost 2.1 percent.
The Stoxx Europe 600 Index decreased 0.7 percent, the first retreat in more than a week.