Health Net (NYSE: HNT) soared 10.01 percent over news of its $6.3 billion acquisition from health insurer Centene (NYSE: CNC).
The Dow Jones Industrial Average went down 27.80 points to 17, 730.11, the Standard & Poor’s 500 composite index closed declined 0.64 points to 2, 076.78 and the NASDAQ composite index slipped 3.91 points to 5, 009.21.
Top Percentage Gainers
 Company |  $ Stock Price |  $ Change |  % Change |
  Health Net |   71.57 |   6.51 |  10.01% |
  Serco Group |   1.996 |   0.066 |   3.42% |
  ICF International |   35.98 |   0.63 |   1.78% |
  CGI Group |   39.84 |   0.55 |   1.40% |
  Harris Corp. |   77.74 |   0.36 |   0.47% |
Market Summary
 Advancing Issues |    8 (26.66%) |
 Declining Issues |   22 (73.33%) |
 Unchanged Issues |    0 |
Executive Mosaic‘s GovCon Index is a composite index that tracks 30 of the largest publicly-traded Government Contracting (GovCon) firms.