Computer Services and Software
TOTAL PURCHASES: $12,236,870,000
| Rank | Parent Company | Amount ($000s) | Market Share |
| 1 | Computer Sciences Corp. | 726,897 | 5.94 |
| 2 | Lockheed Martin Corp. | 668,073 | 5.46 |
| 3 | UNISYS | 524,353 | 4.29 |
| 4 | Electronic Data Systems Corp. | 490,267 | 4.01 |
| 5 | AT&T | 315,457 | 2.58 |
| 6 | General Motors Corp. | 305,102 | 2.49 |
| 7 | Boeing Co. | 234,539 | 1.92 |
| 8 | Allied-Signal Inc. | 234,048 | 1.91 |
| 9 | MCI Communications Corp. | 232,928 | 1.9 |
| 10 | GTE Corp. | 198,257 | 1.62 |
| 11 | Northrop Grumman Corp. | 187,941 | 1.54 |
| 12 | Computer Data Systems Inc. | 182,421 | 1.49 |
| 13 | Science Applications Intl. Corp. | 167,962 | 1.37 |
| 14 | IBM Corp. | 164,318 | 1.34 |
| 15 | Wang Laboratories Inc. | 161,670 | 1.32 |
| 16 | Litton Industries Inc. | 157,979 | 1.29 |
| 17 | Raytheon Co. | 153,900 | 1.26 |
| 18 | GTSI | 141,004 | 1.15 |
| 19 | DynCorp | 125,476 | 1.03 |
| 20 | Science and Applied Technology | 117,617 | 0.96 |
| 21 | BTG Inc. | 116,248 | 0.95 |
| 22 | Logicon Inc. | 116,148 | 0.95 |
| 23 | International Research Institute | 113,621 | 0.93 |
| 24 | Tracor Inc. | 111,628 | 0.91 |
| 25 | BDM Corp. | 98,645 | 0.81 |
| 26 | TRW Inc. | 90,500 | 0.74 |
| 27 | Nichols Research Corp. | 83,577 | 0.68 |
| 28 | Sterling Software Inc. | 80,173 | 0.66 |
| 29 | Intergraph Corp. | 74,233 | 0.61 |
| 30 | Telos Corp. | 73,161 | 0.6 |
| 31 | Booz Allen & Hamilton Inc. | 70,023 | 0.57 |
| 32 | Federal Data Corp. | 62,384 | 0.51 |
| 33 | Harris Corp. | 60,822 | 0.5 |
| 34 | CACI International Inc. | 59,311 | 0.48 |
| 35 | Digital Equipment Corp. | 58,335 | 0.48 |
| 36 | Information Technology Solutions | 51,388 | 0.42 |
| 37 | General Electric Co. | 50,444 | 0.41 |
| 38 | AMS | 46,996 | 0.38 |
| 39 | Planning Technologies Inc. | 45,218 | 0.37 |
| 40 | Computer Associates International | 44,347 | 0.36 |
Rankings are for the total federal government and are drawn from both Product Service Codes and Standard Industrial Codes and are based on prime contract actions of $25,000 or more.
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