Wall Street flat as health stocks weigh

The S&P 500 index failed to hold on to its gains after opening at a record high on Monday as a drop in healthcare stocks offset the impact of higher oil prices and a strong jobs report. The S&P 500 healthcare index lost 1.14 percent, the most since June 27. The S&P and the Nasdaq closed at record highs on Friday after data showed that the U.S. economy added 255,000 jobs in July, way more than 180,000 that analysts had estimated.