Investors also will watch the Tuesday release of figures on retail sales and the producer price index, as well as news from Greece on that country’s plans in case talks with international creditors fall apart, according to CNBC.
The euro closed $1.05 Monday against the U.S. dollar and oil prices closed up 27 cents to $51.91 per barrel.
The Dow Jones Industrial Average fell 80.34 points to 17, 977.31, the S&P 500 composite index declined 9.62 points to 2, 092.44 and the NASDAQ composite index lost 7.73 points to 4, 988.25.
Top Percentage Gainers
 Company |  Stock Price |  $ Change |  % Change |
 CGI Group |   45.48 |   0.94 |   2.11% |
 AECOM Technology |   32.87 |   0.24 |   0.74% |
  SAIC |   52.33 |   0.26 |   0.50% |
 Healthnet |   58.19 |   0.25 |   0.43% |
 Cubic Corp. |   50.27 |   0.09 |   0.18% |
Market Summary
 Advancing Issues |  24 (80.00%) |
 Declining Issues |   6 (20.00%) |
 Unchanged Issues |   0 |
Executive Mosaic‘s GovCon Index is a composite index that tracks 30 of the largest publicly-traded Government Contracting (GovCon) firms.