The S&P 500

closed relatively unchanged on Tuesday as Wall Street looked ahead to this week’s interest rate decision from the Federal Reserve.

The broad market index traded around the flatline, slipping just 0.09% to close at 6,840.51, while the Nasdaq Composite

gained 0.13% to settle at 23,576.49. The Dow Jones Industrial Average

fell 179.03 points, or 0.38%, to finish at 47,560.29. The 30-stock index was dragged down by a decline in JPMorgan