US STOCKS SNAPSHOT-S&P 500, Nasdaq open higher; Dow hit by Boeing, Home Depot

The S&P 500 and the Nasdaq indexes opened slightly higher on Wednesday, with investors waiting for the Federal Reserve's decision on monetary policy, while losses in Boeing and Home pressured the Dow Jones index.

The S&P 500 was up 3.23 points, or 0.10%, at 3,135.75. The Nasdaq Composite gained 14.94 points, or 0.17%, to 8,631.12 at the opening bell.

The Dow Jones Industrial Average fell 14.41 points, or 0.05%, to 27,867.31.