U.S. markets reacted to reports that the European Central Bank could launch a quantitative easing program for one year and earnings reports from firms such as UnitedHealth Group (NYSE: UNH), CNBC reported.
The Dow Jones Industrial Average gained 39.05Â points to close at 17, 554.23, the S&P 500Â composite index increased 9.57Â points to 2, 032.12Â and the NASDAQ composite index jumped 12.58Â points to 4, 667.42.
Top Percentage Gainers
 Company |  Stock Price |  $ Change |  % Change |
 Exelis |  17.41 |  0.45 |  2.65% |
  Navistar |  32.37 |  0.60 |  1.89% |
  BAE Systems Inc. |  30.425 |  0.52 |  1.74% |
 Healthnet |  54.43 |  0.81 |  1.51% |
 AECOM Technology |  26.08 |  0.28 |  1.09% |
Market Summary
 Advancing Issues |   13 (43.33%) |
 Declining Issues |   17 (56.66%) |
 Unchanged Issues |   0 |
The Executive Mosaic GovCon Index is a composite index that tracks 30 of the largest publicly-traded Government Contracting (GovCon) firms.