US shares close little changed

NYSE traders Image copyright AP

(Close): US shares end the day flat, having traded lower for most of the session.

The Dow Jones lost 12 points to end at 18,526, while the S&P 500 was more or less where it started the day at 2,186.

The Nasdaq however, managed a small gain of 8 points to close at 5,284, helped by a 0.6% rise in Apple shares as it launched its new iPhone.

Shares in the grocery chain Sprouts Farmers Market fell more than 13% after a disappointing profit forecast.

That news also hit its rival Whole Foods, with its shares falling more than 5%.