U.S. investors showed concerns over conflicting statements from the European Union and Greece’s government leaders over that country’s debt negotiations with Eurozone and international creditors, according to Reuters.
Reuters also cited new data that showed a rise in unemployment benefit applications last week to 282, 000 as a trend that spurred the market downturn Thursday.
The Dow Jones Industrial Average fell 36.87 points to 18, 126.12, the S&P 500 composite index lost 2.68 points to 2, 120.80 and the NASDAQ composite index declined 8.62 points to 5, 097.98.
Top Percentage Gainers
 Company |  Stock Price |  $ Change |  % Change |
 ManTech International |   28.97 |   0.70 |   2.48% |
 SAIC |   54.17 |   1.18 |   2.23% |
 Northrop Grumman |   160.48 |   1.96 |   1.24% |
 Booz Allen Hamilton |   25.32 |   0.27 |   1.08% |
 Orbital ATK |   77.50 |   0.65 |   0.85% |
Market Summary
 Advancing Issues |  14 (46.66%) |
 Declining Issues |  15 (50.00%) |
 Unchanged Issues |    1  (3.33%) |
Executive Mosaic‘s GovCon Index is a composite index that tracks 30 of the largest publicly-traded Government Contracting (GovCon) firms.