US stocks slip at open, Boeing rally caps losses on Dow

Wall Street's main indexes kicked off the holiday-shortened week lower on Monday, as investors looked ahead to commentary from Federal Reserve officials and key inflation data, while Boeing gained after the planemaker said its CEO would be stepping down.

The Dow Jones Industrial Average fell 65.36 points, or 0.17%, at the open, to 39,410.54.

The S&P 500 opened lower by 14.66 points, or 0.28%, at 5,219.52, while the Nasdaq Composite dropped 93.52 points, or 0.57%, to 16,335.30 at the opening bell.

More to come....