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 $347.2B of federal obligations between them. Concentration varies sharply: the five largest firms hold 96% of Offices Of Physicians (Except Mental Health Specialists) but just 20% of Engineering Services.
Federal prime-contract obligations (FPDS), trailing 12 months, refreshed daily. Figures as of 2026-07-10.
| # | 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 (45%) · buyer: Department of the Navy
|
$51.3B | 75% |
| 3 |
524114 Direct Health And Medical Insurance Carriers
Led by OPTUM PUBLIC SECTOR SOLUTIONS, INC. (46%) · buyer: Department of Veterans Affairs
|
$38.5B | 94% |
| 4 |
541330 Engineering Services
Led by ELECTRIC BOAT CORPORATION (8%) · buyer: Department of the Navy
|
$36.5B | 20% |
| 5 |
561210 Facilities Support Services
Led by NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC (15%) · buyer: Department of Energy
|
$36.3B | 57% |
| 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
|
$33.7B | 28% |
| 7 |
541512 Computer Systems Design Services
Led by ACCENTURE FEDERAL SERVICES LLC (9%) · buyer: Federal Acquisition Service
|
$29.3B | 31% |
| 8 |
336414 Guided Missile And Space Vehicle Manufacturing
Led by LOCKHEED MARTIN CORPORATION (31%) · buyer: Department of the Army
|
$25.1B | 75% |
| 9 |
541519 Other Computer Related Services
Led by THUNDERCAT TECHNOLOGY, LLC (5%) · buyer: Department of Veterans Affairs
|
$22.5B | 20% |
| 10 |
336611 Ship Building And Repairing
Led by BATH IRON WORKS CORPORATION (10%) · buyer: Department of the Navy
|
$18.2B | 45% |
| 11 |
334511 Search, Detection, Navigation, Guidance, Aeronautical, And Nautical System And Instrument Manufacturing
Led by RAYTHEON COMPANY (14%) · buyer: Department of the Navy
|
$13.8B | 36% |
| 12 |
325412 Pharmaceutical Preparation Manufacturing
Led by MCKESSON CORPORATION (91%) · buyer: Department of Veterans Affairs
|
$13.5B | 94% |
| 13 |
336413 Other Aircraft Parts And Auxiliary Equipment Manufacturing
Led by THE BOEING COMPANY (7%) · buyer: Department of the Navy
|
$13.1B | 28% |
| 14 |
621111 Offices Of Physicians (Except Mental Health Specialists)
Led by QTC MEDICAL SERVICES INC (31%) · buyer: Department of Veterans Affairs
|
$11.7B | 96% |
| 15 |
541990 All Other Professional, Scientific, And Technical Services
Led by BATTELLE ENERGY ALLIANCE, LLC (23%) · buyer: Department of Energy
|
$10.4B | 43% |
| 16 |
541611 Administrative Management And General Management Consulting Services
Led by CHEMONICS INTERNATIONAL, INC. (7%) · buyer: Agency for International Development
|
$10.0B | 23% |
| 17 |
541511 Custom Computer Programming Services
Led by GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. (7%) · buyer: Department of the Air Force
|
$9.8B | 24% |
| 18 |
541710 Research And Development In The Physical, Engineering, And Life Sciences
Led by LAWRENCE LIVERMORE NATIONAL SECURITY, LLC (42%) · buyer: Department of Energy
|
$9.1B | 94% |
| 19 |
237990 Other Heavy And Civil Engineering Construction
Led by DRAGADOS/HAWAIIAN DREDGING/ORION JV (11%) · buyer: Department of the Army
|
$8.4B | 28% |
| 20 |
336412 Aircraft Engine And Engine Parts Manufacturing
Led by RTX CORPORATION (46%) · buyer: Department of the Navy
|
$8.2B | 88% |
| 21 |
561612 Security Guards And Patrol Services
Led by METROPOLITAN SECURITY SERVICES, INC. (8%) · buyer: U.S. Immigration and Customs Enforcement
|
$6.8B | 34% |
| 22 |
332993 Ammunition (Except Small Arms) Manufacturing
Led by THE BOEING COMPANY (10%) · buyer: Department of the Army
|
$6.6B | 44% |
| 23 |
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
|
$6.0B | 43% |
| 24 |
562910 Remediation Services
Led by SAVANNAH RIVER MISSION COMPLETION, LLC (16%) · buyer: Department of Energy
|
$5.7B | 52% |
| 25 |
324110 Petroleum Refineries
Led by VALERO MARKETING AND SUPPLY CO (9%) · buyer: Defense Logistics Agency
|
$5.5B | 40% |
| 26 |
488190 Other Support Activities For Air Transportation
Led by AMENTUM SERVICES, INC. (19%) · buyer: Department of the Air Force
|
$5.3B | 54% |
| 27 |
336992 Military Armored Vehicle, Tank, And Tank Component Manufacturing
Led by BAE SYSTEMS LAND & ARMAMENTS L.P. (27%) · buyer: Department of the Army
|
$4.5B | 77% |
| 28 |
511210 Software Publishers
Led by CARAHSOFT TECHNOLOGY CORP (26%) · buyer: Department of Veterans Affairs
|
$4.5B | 79% |
| 29 |
541614 Process, Physical Distribution, And Logistics Consulting Services
Led by AMI METALS, INC (37%) · buyer: U.S. Customs and Border Protection
|
$4.0B | 77% |
| 30 |
325411 Medicinal And Botanical Manufacturing
Led by AMERISOURCEBERGEN DRUG CORP (99%) · buyer: Defense Logistics Agency
|
$3.4B | 100% |
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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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