档案照片:一名交易员在纽约证券交易所的大厅里工作。纽约——美国股市上周五大幅下挫,道琼斯指数在下午下跌超过550点,跌幅超过2.2%,投资者对可能出现的经济放缓的担忧加剧。
File Photo: A trader works on the floor of the New York Stock Exchange at the end of the day in New York. [Photo/IC]

NEW YORK -- US stocks suffered steep sell-off on Friday, with the Dow slumping more than 550 points, or over 2.2 percent, in the afternoon session as rising fears of a possible economic slowdown rattled investors.