Stocks quit win streak; Apple lifts Nasdaq 100

SAN FRANCISCO (MarketWatch)
U.S. stocks ended lower Monday for the first day in five, hit by profit-taking and some unease over geopolitical concerns that roiled energy markets
The Dow Jones Industrial Average ended down 40.27 points, or 0.3%, to 13,553.10; Boeing Co.  and Caterpillar Inc. contributed the most to the Dow's loss
The S&P 500 ended off 4.58 points, or 0.3%
The Nasdaq Composite sank 5.28 points, or 0.2%, to 3,178.67
But the Nasdaq 100 ended higher, lifted by a 1.2% gain in Apple Inc.    
shares, the index's biggest component