The services sector continued its expansion in September but at a considerably slower pace than expected, according to the ISM Non-Manufacturing Index released Thursday. The closely watched measure came in at 52.6, compared to an expected reading of 55.3 from economists surveyed by Dow Jones. It was the weakest reading since August 2016. Markets sold off sharply following the news, with the Dow Jones Industrial Average down more than 250 points after being only slightly lower earlier on. ISM officials said the overall ...