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Top 25 GSA Contractors
Total Purchases: $14,458,084,018
| Rank | Parent Company | Amount | Market Share |
| 1 | General Motors Corp. | $695,654,983 | 4.81% |
| 2 | Ford Motor Co. | 482,584,424 | 3.34 |
| 3 | Clark Enterprises | 435,381,000 | 3.01 |
| 4 | SAIC | 370,666,462 | 2.56 |
| 5 | Washington Gas Light Co. | 352,543,536 | 2.44 |
| 6 | Chrysler LLC | 265,901,048 | 1.84 |
| 7 | Hewlett-Packard Co. | 247,526,159 | 1.71 |
| 8 | Grunley Construction Co. | 235,714,841 | 1.63 |
| 9 | Cauldwell Wingate Co. LLC | 226,877,597 | 1.57 |
| 10 | Northrop Grumman Corp. | 194,743,735 | 1.35 |
| 11 | National Industries for the Blind | 178,283,865 | 1.23 |
| 12 | SRA International Inc. | 163,327,975 | 1.13 |
| 13 | General Dynamics Corp. | 145,880,854 | 1.01 |
| 14 | Booz Allen Hamilton Inc. | 138,405,106 | 0.96 |
| 15 | Harris Corp. | 134,174,498 | 0.93 |
| 16 | Lockheed Martin Corp. | 125,899,407 | 0.87 |
| 17 | Turner Construction Co. | 122,041,582 | 0.84 |
| 18 | Charles N. White Construction Co. | 105,930,538 | 0.73 |
| 19 | BAE Systems | 99,482,385 | 0.68 |
| 20 | Skanska AB | 95,180,679 | 0.65 |
| 21 | Jacobs Engineering Group Inc. | 90,632,789 | 0.62 |
| 22 | Unisys Corp. | 90,138,244 | 0.62 |
| 23 | Gilbane Inc. | 83,432,977 | 0.57 |
| 24 | CACI International Inc. | 72,254,703 | 0.49 |
| 25 | Computer Sciences Corp. | 69,408,815 | 0.48 |
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