Harris Corp.’s stock price jumped 9.63 percent after the military radio maker said it would buy defense technology contractor Exelis (NYSE: XLS) for approximately $4.75 billion in cash and stock.
Exelis recorded the largest gain of all index companies with a price surge of 36.25 percent.
Worries over the S&P’s downgrade of Greece’s rating to “B-” from “B” offset gains earlier in the day after the release of the Labor Department‘s January job creation report that beat Wall Street’s estimates and showed an increase in hourly wages for the month, CNBC reported.
The Dow Jones Industrial Average fell 60.59 points to 17, 824.29, the S&P 500 composite index dipped 7.05 points to 2, 055.47 and the NASDAQ composite index declined 20.7 points to 2, 744.40.
Top Percentage Gainers
 Company |  Stock Price |  $ Change |  % Change |
 Exelis |   24.13 |   6.42 |   36.25% |
  Harris Corp. |   76.18 |   6.69 |   9.63% |
 McKesson |   222.76 |   6.90 |   3.20% |
 Computer Sciences Corp. |   65.02 |   1.57 |   2.47% |
 Navistar |   28.63 |   0.50 |   1.78% |
Market Summary
 Advancing Issues |   18 (60.00%) |
 Declining Issues |   12 (40.00%) |
 Unchanged Issues |    0 |
Executive Mosaic‘s GovCon Index is a composite index that tracks 30 of the largest publicly-traded Government Contracting (GovCon) firms.