Wall Street steps back from record highs

Wall Street retreated from record highs on Monday as a drop in healthcare stocks offset the impact of higher oil prices on energy stocks and a strong jobs report. A rally to several all-time highs since late June has left the S&P 500 up nearly 7 percent in 2016, with many investors concerned about stretched valuations. Everyone is sitting there saying 'Holy cow, what did we do?'," said Brad McMillan, chief investment officer at Commonwealth Financial Network.