U.S. stocks traded nearly flat, as traders are waiting for the results of today's Federal Reserve's policy meeting. The Dow Jones Industrial Average erased 0.04 per cent, the S&P 500 Index declined by 0.07 per cent, while the Nasdaq Composite Index lost 0.11 per cent. Moreover, disappointing data of existing home sales came out, with a rise of 2.3% to 4.47 million units, below expectations, which were for a 3.2 per cent increase.