PSC codes › B599
PSC B599 — Other Special Studies and Analysis: federal contracts
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What PSC B599 covers
Description: Other Special Studies and Analysis
Official definition: GSA PSC Manual (PSC April 2025.xlsx), acquisition.gov/psc-manual. Category: Professional Services › Management Advisory Services.
Who is winning new PSC B599 work
Contractors ranked by obligations on awards that started FY2024–FY2027 to date.
| Contractor | Obligations | Awards |
|---|---|---|
| BOOZ ALLEN HAMILTON INC | $165.8M | 138 |
| THE RAND CORPORATION | $104.9M | 55 |
| FORS MARSH GROUP LLC | $59.0M | 32 |
| MATHEMATICA INC. | $52.7M | 12 |
| AMERICAN INSTITUTE IN TAIWAN | $44.9M | 2 |
| EMORY UNIVERSITY | $36.9M | 4 |
| THE BROAD INSTITUTE, INC | $34.5M | 3 |
| BAYLOR COLLEGE OF MEDICINE | $27.7M | 3 |
| GROUP W INC | $19.3M | 43 |
| JANUS RESEARCH GROUP, LLC | $18.4M | 1 |
How competitive is PSC B599?
- 51.8% of obligations on these awards were competed.
- 39.3% of competed awards that report offers drew a single offer (n=369).
- 11.7% went to small businesses.
- The five largest contractors hold 50.0% across 425 contractors.
NAICS codes used on PSC B599 awards
| NAICS | Industry | Share |
|---|---|---|
| 541330 | Engineering Services | 23.6% |
| 541720 | Research and Development in the Social Sciences and Humanities | 19.8% |
| 541380 | Testing Laboratories and Services | 15.7% |
| 541611 | Administrative Management and General Management Consulting Services | 11.6% |
| 541990 | All Other Professional, Scientific, and Technical Services | 7.4% |
| 928120 | International Affairs | 5.2% |
| 541690 | Other Scientific and Technical Consulting Services | 3.6% |
| 336411 | Aircraft Manufacturing | 3.5% |
Related PSC codes
R499 Other Professional Services · R408 Program Management/Support Services · R425 Engineering and Technical Services · R799 Other Management Support Services · AC13 National Defense R&D Services; Department of Defense - Military; Experimental Development · R410 Program Evaluation/Review/Development · B529 Scientific Data Studies · AJ11 General Science and Technology R&D Services; General Science and Technology; Basic Research
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