The Nasdaq Composite Index lost 16.95 , or 1.1 percent , to 1507.76 , its first slide in five days .
The Nasdaq Composite Index lost 16.95 , or 1.1 percent , to 1507.76 , its first slide in five days .
The tech-heavy Nasdaq Stock Markets composite index lost the most ground , falling 16.95 points to 1,506,76 .