US stocks end lower ahead of Fed, Brexit fears weigh

US stocks ended slightly lower on Tuesday, with the DJIA and the S&P 500 posting their fourth declines in a row, weighed by Brexit concerns and ahead of the closely watched Fed decision.

The Dow Jones Industrial Average dropped 57.66 points, or 0.33%, to close at 17,674.82. The S&P 500 Index lost 3.74 points, or 0.18%, to end at 2,075.32. The Nasdaq Composite Index fell 4.89 points, or 0.10%, to finish at 4,843.55.