S&P 500: Market Breadth Suggests First Down And Then Up

 | Aug 09, 2016 07:42PM ET

The recent market rally may have reached its crecendo for now as underlying market breadth has been deteriorating over the past weeks. The chart below shows the McClellan Oscillator for the S&P500: SPX-MO. It simple measures how many stocks are advancing vs declining. A postive reading means more stocks are going up than down, and vice versa for a negative reading.