NYSE imposes trading collars amid broad sell-off
NEW YORK, May 17 (Reuters) - The New York Stock Exchange imposed arbitrage trading collars on Wednesday as the sell-off in U.S. stocks picked up speed after a government report that stoked concerns of quickening inflation at the consumer level.
The New York Stock Exchange Composite Index <.NYA> was down 160.35 points at 11:47 a.m. (1547 GMT). Earlier the index had fallen by 173.97 points.
The NYSE imposes limits on index-arbitrage sell orders on the Standard & Poor's 500