U.S. markets had a nice bounce yesterday and they look poised for another bounce today, barring any hawkish comments from the Fed in todayโ€™s policy announcement. But all may not be fine and well as market internals have a real troubling look.

The chart below shows the NYSE cumulative advance-decline line for stocks compared to the S&P 500. The advance-decline line measures market breadth. The YTD trading range of the headline indices may be masking underlying weakness in the market that is evident in the downtrend in the A/D line. Narrowing markets are often a sign that stocks are running out of gas. Keep a close eye on market breath. If the A/D line continues its downtrend, a deeper correction could be in the cards.

S&P vs NYSE Decline