The broader Standard & Poor 's 500 Index .SPX edged down 9 points , or 0.98 percent , to 921 .
The Standard & Poor 's 500 Index shed 5.20 , or 0.6 percent , to 924.42 as of 9 : 33 a.m. in New York .
The technology-laced Nasdaq Composite Index < .IXIC > shed 15 points , or 0.98 percent , to 1,492 .