The pace of growth in the U.S. services sector accelerated in August to its fastest pace in almost eight years. A separate report showed that new orders for U.S. factory goods dropped in July.

The Institute for Supply Management (ISM) said its services index rose to 58.6, its highest since December 2005, from 56 in July. The reading handily topped economists' consensus expectations for 55 and beat the high end of forecasts.