Concerns over the prospects of economic growth in Europe weighed on trading activity in the U.S. and investors will watch for a potential stimulus from Europe’s central bank, the Wall Street Journal reports.
The Dow Jones Industrial Average retreated 27.16 points to 17, 613.68, the S&P 500 composite index slipped 5.23 points to 2, 023.03 and the NASDAQ composite index lost 3.21 points to 4, 661.50.
Top Percentage Gainers
 Company |  Stock Price |  $ Change |  % Change |
  SAIC |   51.22 |   2.37 |   4.85% |
  CACI International |  88.60 |  2.17 |  2.51% |
 Booz Allen Hamilton |   28.46 |   0.62 |   2.23% |
  ManTech International |   31.32 |   0.65 |   2.12% |
 Maximus |   55.53 |   1.08 |   1.98% |
Market Summary
Advancing Issues | Â 20 (66.66%) |
Declining Issues | Â 10Â (33.33%) |
Unchanged Issues | Â Â 0 |
The Executive Mosaic GovCon Index is a composite index that tracks 30 of the largest publicly-traded Government Contracting (GovCon) firms.