
Investors showed concern over continued declines in oil prices and are preparing to watch the start of quarterly earnings reports, CNBC reports.
Crude futures on the New York Mercantile Exchange closed at $46.09 per barrel and traded below the $46 level for the first time in almost five years, according to CNBC.
The Dow Jones Industrial Average fell 96.53 points to 17, 640.84, the S&P 500 composite index lost 16.54 points to 2, 028.27 and the NASDAQ composite index declined 39.36 points to 4, 664.71.
Percentage Gainers
 Company |  Stock Price |  $ Change |  % Change |
 Navistar |  32.05 |  0.55 |  1.75% |
 Maximus |  54.45 |  0.32 |  0.59% |
 Exelis |  17.01 |  0.05 |  0.29% |
  BAE Systems Inc. |  28.385 |  0.045 |  0.16% |
 Engility Holdings |  40.94 |  0.03 |  0.07% |
Market Summary
Advancing Issues | Â Â 5Â (16.66%) |
Declining Issues | Â 25 (83.33%) |
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.