The GovCon Index reached a new high for the month of December with a gain of 0.187 points — or 0.261 percent — to close at 71.467 on Tuesday.
Investors appeared to show confidence after the Commerce Department said U.S. gross domestic product grew at a 5-percent annual rate between July and September, according to Bloomberg.
Bloomberg said this is the largest increase in GDP recorded since the third quarter of 2003.
The Dow Jones Industrial Average gained 64.73 points to close at 18.024.17, the S&P 500 composite index rose 5.24 points to close at 2, 083.78 and the NASDAQ composite index fell 153.66 points to close at 4, 770.11.
Top Percentage Gainers
Company | Stock Price | $ Change | % Change |
 Serco Inc. |  2.4843 |  0.0813 |  3.38% |
 Orbital |  26.66 |  0.87 |  3.37% |
 Navistar |  33.92 |  1.01 |  3.07% |
 Booz Allen Hamilton |  27.11 |  0.56 |  2.11% |
 AECOM |  30.40 |  0.51 |  1.71% |
Market Summary
Advancing Issues | Â 21 (70.00%) |
Declining Issues | Â Â 9 (30.00%) |
Unchanged Issues | Â Â 0 (0.00%) |
The Executive Mosaic GovCon Index is a composite index that tracks 30 of the largest publicly-traded Government Contracting (GovCon) firms.