Wall St ends down

U.S. stocks closed slightly down as investors remained on sideline ahead of Federal Reserve policy decision and ECB meeting Wednesday and Thursday.
Dow Jones lost 64.33 points, or 0.49 per cent at 13,008.68, while S&P 500 lost 5.98 points, or 0.43 per cent at 1,379.33.
S&P telecom and tech sectors gained, while consumer discretionary and energy shares dropped.
Nasdaq composite lost 6.32 points, or 0.21 per cent at 2,939.52.