| NASA |
| Total Purchases $11,161,528,000 |
| Rank | Parent Company | Amount ($000s) | Market Share (%) |
| 1 | Boeing Co. | 2,442,720 | 21.89 |
| 2 | Lockheed Martin Corp. | 2,248,171 | 20.14 |
| 3 | California Institute of Technology | 1,468,350 | 13.16 |
| 4 | Alliant Techsystems Inc. | 378,125 | 3.39 |
| 5 | Northrop Grumman Corp. | 367,331 | 3.29 |
| 6 | Raytheon Co. | 273,290 | 2.45 |
| 7 | SAIC | 164,414 | 1.47 |
| 8 | United Technologies Corp. | 152,064 | 1.36 |
| 9 | Computer Sciences Corp. | 126,113 | 1.13 |
| 10 | QSS Group | 125,954 | 1.13 |
| 11 | Swales Aerospace | 116,112 | 1.04 |
| 12 | Johns Hopkins University | 113,124 | 1.01 |
| 13 | TRW Inc. | 82,820 | 0.74 |
| 14 | Ball Corp. | 80,605 | 0.72 |
| 15 | Honeywell Inc. | 79,493 | 0.71 |
| 16 | Orbital Sciences Corp. | 75,986 | 0.68 |
| 17 | Assoc. Univ. for Research & Astronomy | 72,396 | 0.65 |
| 18 | Jacobs Engineering Group Inc. | 70,197 | 0.63 |
| 19 | Delta Launch Services Inc. | 61,915 | 0.55 |
| 20 | Smithsonian Institution | 59,967 | 0.54 |
| 21 | Mississippi Space Services | 58,924 | 0.53 |
| 22 | Systems Assessment & Research | 56,857 | 0.51 |
| 23 | ITT Industries | 56,808 | 0.51 |
| 24 | ACS | 56,327 | 0.50 |
| 25 | Wyle Laboratories Inc. | 53,370 | 0.48 |
| 26 | Universities Space Research Assn. | 45,679 | 0.41 |
| 27 | Johnson Engineering Corp. | 44,885 | 0.40 |
| 28 | Halliburton Co. | 42,532 | 0.38 |
| 29 | Information Dynamics Inc. | 41,931 | 0.38 |
| 30 | Stanford University | 41,103 | 0.37 |
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