Largest federal contract markets
The federal NAICS markets with the most contract money obligated over the trailing 12 months, ranked by net obligations. This is where the dollars are: the largest, most-established buying programs in the government. The top-5 share column shows how much of each market the five largest vendors already hold, so you can see at a glance which of the big markets are wide open and which are effectively owned by a handful of incumbents.
The largest federal contract market over the trailing 12 months is Commercial And Institutional Building Construction at $55.9B, led by FISHER SAND & GRAVEL CO. The ten largest markets here account for $375.2B of federal obligations between them. Concentration varies sharply: the five largest firms hold 95% of Offices Of Physicians (Except Mental Health Specialists) but just 20% of Administrative Management And General Management Consulting Services.
Federal prime-contract obligations (FPDS), trailing 12 months, refreshed daily. Figures as of 2026-08-16.
| # | NAICS market | Obligated | Top-5 share |
|---|---|---|---|
| 1 |
236220 Commercial And Institutional Building Construction
Led by FISHER SAND & GRAVEL CO (25%) · buyer: U.S. Customs and Border Protection
|
$55.9B | 47% |
| 2 |
336411 Aircraft Manufacturing
Led by LOCKHEED MARTIN CORPORATION (46%) · buyer: Department of the Navy
|
$53.2B | 76% |
| 3 |
524114 Direct Health And Medical Insurance Carriers
Led by OPTUM PUBLIC SECTOR SOLUTIONS, INC. (48%) · buyer: Department of Veterans Affairs
|
$48.7B | 94% |
| 4 |
541330 Engineering Services
Led by ELECTRIC BOAT CORPORATION (17%) · buyer: Department of the Navy
|
$41.2B | 27% |
| 5 |
561210 Facilities Support Services
Led by TRIAD NATIONAL SECURITY, LLC (15%) · buyer: Department of Energy
|
$36.7B | 56% |
| 6 |
541715 Research And Development In The Physical, Engineering, And Life Sciences (Except Nanotechnology And Biotechnology)
Led by FLUOR MARINE PROPULSION, LLC (11%) · buyer: Department of the Air Force
|
$35.5B | 26% |
| 7 |
336414 Guided Missile And Space Vehicle Manufacturing
Led by LOCKHEED MARTIN CORPORATION (35%) · buyer: Department of the Army
|
$29.8B | 78% |
| 8 |
541512 Computer Systems Design Services
Led by ACCENTURE FEDERAL SERVICES LLC (9%) · buyer: Federal Acquisition Service
|
$29.5B | 31% |
| 9 |
541519 Other Computer Related Services
Led by THUNDERCAT TECHNOLOGY, LLC (5%) · buyer: Department of Veterans Affairs
|
$22.4B | 20% |
| 10 |
336611 Ship Building And Repairing
Led by DAVIE DEFENSE INC. (15%) · buyer: Department of the Navy
|
$22.3B | 54% |
| 11 |
334511 Search, Detection, Navigation, Guidance, Aeronautical, And Nautical System And Instrument Manufacturing
Led by RAYTHEON COMPANY (15%) · buyer: Department of the Navy
|
$14.5B | 35% |
| 12 |
336413 Other Aircraft Parts And Auxiliary Equipment Manufacturing
Led by NORTHROP GRUMMAN SYSTEMS CORPORATION (8%) · buyer: Department of the Navy
|
$14.0B | 29% |
| 13 |
325412 Pharmaceutical Preparation Manufacturing
Led by MCKESSON CORPORATION (91%) · buyer: Department of Veterans Affairs
|
$13.4B | 94% |
| 14 |
541990 All Other Professional, Scientific, And Technical Services
Led by BATTELLE ENERGY ALLIANCE, LLC (21%) · buyer: Department of Energy
|
$10.5B | 42% |
| 15 |
541511 Custom Computer Programming Services
Led by PALANTIR USG INC (9%) · buyer: Department of the Air Force
|
$10.2B | 27% |
| 16 |
541611 Administrative Management And General Management Consulting Services
Led by DELOITTE CONSULTING LLP (7%) · buyer: Centers for Medicare and Medicaid Services
|
$9.8B | 20% |
| 17 |
621111 Offices Of Physicians (Except Mental Health Specialists)
Led by QTC MEDICAL SERVICES INC (27%) · buyer: Department of Veterans Affairs
|
$9.4B | 95% |
| 18 |
541710 Research And Development In The Physical, Engineering, And Life Sciences
Led by LAWRENCE LIVERMORE NATIONAL SECURITY, LLC (42%) · buyer: Department of Energy
|
$9.3B | 94% |
| 19 |
237990 Other Heavy And Civil Engineering Construction
Led by BARNARD CONSTRUCTION COMPANY, INCORPORATED (15%) · buyer: Department of the Army
|
$9.2B | 31% |
| 20 |
336412 Aircraft Engine And Engine Parts Manufacturing
Led by RTX CORPORATION (48%) · buyer: Department of the Navy
|
$8.2B | 84% |
| 21 |
561612 Security Guards And Patrol Services
Led by THE GEO GROUP, INC. (9%) · buyer: U.S. Immigration and Customs Enforcement
|
$7.1B | 36% |
| 22 |
324110 Petroleum Refineries
Led by PHILLIPS 66 COMPANY (10%) · buyer: Defense Logistics Agency
|
$6.5B | 40% |
| 23 |
332993 Ammunition (Except Small Arms) Manufacturing
Led by THE BOEING COMPANY (17%) · buyer: Department of the Army
|
$6.2B | 50% |
| 24 |
488190 Other Support Activities For Air Transportation
Led by AMENTUM SERVICES, INC. (18%) · buyer: Department of the Air Force
|
$6.1B | 57% |
| 25 |
541712 Research And Development In The Physical, Engineering, And Life Sciences (Except Biotechnology)
Led by BROOKHAVEN SCIENCE ASSOCIATES LLC (16%) · buyer: Department of the Air Force
|
$5.8B | 44% |
| 26 |
562910 Remediation Services
Led by SAVANNAH RIVER MISSION COMPLETION, LLC (20%) · buyer: Department of Energy
|
$5.8B | 54% |
| 27 |
336992 Military Armored Vehicle, Tank, And Tank Component Manufacturing
Led by GENERAL DYNAMICS LAND SYSTEMS INC. (27%) · buyer: Department of the Army
|
$4.5B | 74% |
| 28 |
511210 Software Publishers
Led by CARAHSOFT TECHNOLOGY CORP (27%) · buyer: Department of Veterans Affairs
|
$4.5B | 80% |
| 29 |
541614 Process, Physical Distribution, And Logistics Consulting Services
Led by AMI METALS, INC (40%) · buyer: U.S. Customs and Border Protection
|
$3.7B | 76% |
| 30 |
518210 Computing Infrastructure Providers, Data Processing, Web Hosting, And Related Services
Led by AMAZON WEB SERVICES, INC. (12%) · buyer: Department of Veterans Affairs
|
$3.6B | 32% |
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How these numbers are computed
Each row aggregates the public FPDS prime-contract record for one NAICS code, over the trailing 12 months. Obligated dollars are net of de-obligations, so the figure is money that actually moved. Firms is the count of distinct winning entities by UEI. Top-5 share is the five largest recipients' portion of awarded dollars, a structural read of the market, not a verdict on whether you can win in it.
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