Top 100 DOD Washington Headquarters Service Contractors, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	National Security Technology Accelerator Inc.	$533,981,084	27.2%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$439,341,566	22.4%	Rank history: #2 in FY2021, #2 in FY2022, #1 in FY2024 and #3 in FY2025; unchanged since FY2022.
3	Nhanced Semiconductors, Inc.	$57,447,376	2.9%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2024 and #16 in FY2025; new.
4	Maximus Inc. Through Maximus Federal Technology Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$34,831,155	1.8%	Rank history: not on the FY2021 list, #15 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
5	Honeywell International Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 333242 Semiconductor Machinery Manufacturing	$33,547,601	1.7%	Rank history: #57 in FY2021, #17 in FY2022, #5 in FY2024 and #52 in FY2025; up 12 since FY2022.
6	Georgia TECH Research Corp Through Georgia TECH Applied Research Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$32,134,368	1.6%	Rank history: #24 in FY2021, #21 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
7	Northrop Grumman Corporation 5 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541512 Computer Systems Design Services 336414 Guided Missile and Space Vehicle Manufacturing	$25,243,054	1.3%	Rank history: not on the FY2021 list, #9 in FY2022, #6 in FY2024 and #5 in FY2025; up 2 since FY2022.
8	Anduril Industries Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$25,072,355	1.3%	Rank history: not on the FY2021 list, #35 in FY2022, #20 in FY2024 and not on the FY2025 list; up 27 since FY2022.
9	General Dynamics Corporation 3 awardees, including General Dynamics Information Technology, Inc., Praxis Engineering Technologies LLC and Csra LLC Top NAICS codes 541330 Engineering Services 511210 Software Publishers 541519 Other Computer Related Services	$22,201,833	1.1%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2024 and #22 in FY2025; up 310 since FY2022.
10	Athena Construction Group, Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction 236220 Commercial and Institutional Building Construction	$20,958,311	1.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
11	Signature Renovations LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$20,257,577	1.0%	Rank history: not on the FY2021 list, #32 in FY2022, #48 in FY2024 and #9 in FY2025; up 21 since FY2022.
12	Servicesource Inc. Top NAICS codes 561210 Facilities Support Services	$18,064,590	0.9%	Rank history: #4 in FY2021, #6 in FY2022, #8 in FY2024 and #10 in FY2025; down 6 since FY2022.
13	Cherokee Nation Through Cherokee CRC LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$17,916,504	0.9%	Rank history: not on the FY2021 list, #86 in FY2022 and not on the FY2024–FY2025 lists; up 73 since FY2022.
14	Qualx, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$17,726,938	0.9%	Rank history: #25 in FY2021, #11 in FY2022, #28 in FY2024 and #11 in FY2025; down 3 since FY2022.
15	Alaska Native Government Services LLC Through Copper River Technologies, LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541519 Other Computer Related Services 541330 Engineering Services	$17,673,801	0.9%	Rank history: #33 in FY2021, #24 in FY2022, #40 in FY2024 and #61 in FY2025; up 9 since FY2022.
16	HP Enterprise Services LLC Through Peraton Inc. Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$16,752,178	0.9%	Rank history: not on the FY2021 list, #92 in FY2022 and not on the FY2024–FY2025 lists; up 76 since FY2022.
17	Concurrent Technologies Corp Top NAICS codes 541330 Engineering Services	$15,706,710	0.8%	Rank history: not on the FY2021 list, #25 in FY2022, #29 in FY2024 and #28 in FY2025; up 8 since FY2022.
18	Strategic Analysis, Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$14,956,071	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
19	Quicklogic Corp	$14,942,913	0.8%	Rank history: not on the FY2021 list, #34 in FY2022, #70 in FY2024 and #45 in FY2025; up 15 since FY2022.
20	Analytic Services Inc. 2 awardees, including Advanced Technology International Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$14,723,877	0.7%	Rank history: #3 in FY2021, #5 in FY2022, not on the FY2024 list and #84 in FY2025; down 15 since FY2022.
21	RTX Corporation 5 awardees, including Raytheon Company and Rockwell Collins, Inc. Top NAICS codes 332993 Ammunition (except Small Arms) Manufacturing 611430 Professional and Management Development Training 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$13,590,024	0.7%	Rank history: #12 in FY2021, #14 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
22	The CNA Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$13,461,087	0.7%	Rank history: #29 in FY2021, #31 in FY2022, #38 in FY2024 and #37 in FY2025; up 9 since FY2022.
23	SNA International LLC Top NAICS codes 621511 Medical Laboratories	$13,361,425	0.7%	Rank history: #17 in FY2021, #19 in FY2022, not on the FY2024 list and #20 in FY2025; down 4 since FY2022.
24	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top NAICS codes 541713 Research and Development in Nanotechnology	$12,620,000	0.6%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2024 and not on the FY2025 list; new.
25	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$12,354,028	0.6%	Rank history: not on the FY2021 list, #42 in FY2022 and not on the FY2024–FY2025 lists; up 17 since FY2022.
26	Infinity Labs LLC Top NAICS codes 541519 Other Computer Related Services	$12,216,419	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
27	Markon LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$11,307,946	0.6%	Rank history: #22 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
28	Innovasystems International LLC Top NAICS codes 541330 Engineering Services	$10,800,768	0.5%	Rank history: #36 in FY2021, #58 in FY2022, #16 in FY2024 and #71 in FY2025; up 30 since FY2022.
29	Lockheed Martin Corporation 3 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing	$10,560,341	0.5%	Rank history: #10 in FY2021, #3 in FY2022, #27 in FY2024 and #23 in FY2025; down 26 since FY2022.
30	Nakupuna Consulting LLC Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services	$10,276,999	0.5%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2024 and #19 in FY2025; new.
31	Qcm, Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$9,640,540	0.5%	Rank history: #26 in FY2021, #30 in FY2022, #22 in FY2024 and #43 in FY2025; down 1 since FY2022.
32	HSU Development, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$9,567,031	0.5%	Rank history: not on the FY2021 list, #41 in FY2022, #19 in FY2024 and not on the FY2025 list; up 9 since FY2022.
33	Riverside Research Institute Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$9,201,670	0.5%	Rank history: #37 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; down 15 since FY2022.
34	Hdr, Inc. Through HDR Architecture, Inc. Top NAICS codes 541330 Engineering Services	$8,193,468	0.4%	Rank history: #49 in FY2021, #29 in FY2022, #69 in FY2024 and #57 in FY2025; down 5 since FY2022.
35	Pavcon LLC	$8,177,275	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	Procurement & Acquisition Center of Excellence, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 611430 Professional and Management Development Training	$7,637,692	0.4%	Rank history: #59 in FY2021, #37 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
37	Nakupuna Solutions, LLC Top NAICS codes 561210 Facilities Support Services 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$7,377,784	0.4%	Rank history: #16 in FY2021, #13 in FY2022, #78 in FY2024 and not on the FY2025 list; down 24 since FY2022.
38	Akima Data Management LLC Top NAICS codes 541512 Computer Systems Design Services 541990 All Other Professional, Scientific, and Technical Services	$7,186,224	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Scale AI, Inc.	$6,900,000	0.4%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2024 and not on the FY2025 list; new.
40	Novetta Solutions, LLC Through Accenture Federal Services LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$6,800,000	0.3%	Rank history: #30 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 66 since FY2022.
41	Alliance for Energy Innovation, LLC Top NAICS codes 541711 Research and Development in Biotechnology	$6,648,174	0.3%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2024 and #97 in FY2025; new.
42	Two Six Labs Holdings, Inc. Through Two Six Labs, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$6,545,000	0.3%	Rank history: #7 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
43	Coho Consulting Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541614 Process, Physical Distribution, and Logistics Consulting Services	$6,358,980	0.3%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and #41 in FY2025; new.
44	Parsons Corporation 2 awardees, including Blackhorse, A Parsons LLC and Parsons Government Services Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$6,293,772	0.3%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and not on the FY2025 list; up 269 since FY2022.
45	Trenchant Analytics LLC	$5,846,310	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Jasint Consulting and Technologies, LLC Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541612 Human Resources Consulting Services	$5,578,603	0.3%	Rank history: #39 in FY2021, #40 in FY2022, not on the FY2024 list and #68 in FY2025; down 6 since FY2022.
47	Applied Environmental Inc. Top NAICS codes 541620 Environmental Consulting Services	$5,556,433	0.3%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2024 and #74 in FY2025; up 238 since FY2022.
48	Chinook Systems, Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$5,533,228	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
49	Planned Systems International Inc. Through Pro-Sphere Tek, Inc. Top NAICS codes 541512 Computer Systems Design Services	$5,407,236	0.3%	Rank history: not on the FY2021 list, #33 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
50	Deloitte LLP Through Deloitte Consulting LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$5,334,719	0.3%	Rank history: #50 in FY2021, #71 in FY2022 and not on the FY2024–FY2025 lists; up 21 since FY2022.
51	Guidehouse Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$5,219,521	0.3%	Rank history: #32 in FY2021, #27 in FY2022 and not on the FY2024–FY2025 lists; down 24 since FY2022.
52	Applied Research Institute Inc.	$5,093,552	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
53	Sehlke Consulting LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$5,082,771	0.3%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2024 and not on the FY2025 list; new.
54	Jensen Hughes, Inc. Top NAICS codes 541330 Engineering Services	$4,567,893	0.2%	Rank history: #55 in FY2021, #52 in FY2022, #80 in FY2024 and #72 in FY2025; down 2 since FY2022.
55	R & R Janitorial, Painting & Building Services Inc. Top NAICS codes 561720 Janitorial Services	$4,364,823	0.2%	Rank history: #46 in FY2021, #36 in FY2022, #81 in FY2024 and #75 in FY2025; down 19 since FY2022.
56	CACI International Inc. Through Caci, Inc. - Federal Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541511 Custom Computer Programming Services	$4,355,934	0.2%	Rank history: not on the FY2021 list, #45 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
57	Radiance Technologies Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$4,235,217	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Teledyne Technologies Incorporated Through Teledyne Scientific & Imaging, LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$4,148,655	0.2%	Rank history: #81 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
59	Puyenpa Services, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$4,112,932	0.2%	Rank history: #5 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
60	Chenega It Enterprise Services, LLC Top NAICS codes 541512 Computer Systems Design Services	$3,947,985	0.2%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2024 and not on the FY2025 list; new.
61	M.c. Dean, Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance 238210 Electrical Contractors and Other Wiring Installation Contractors 561621 Security Systems Services (except Locksmiths)	$3,790,994	0.2%	Rank history: #8 in FY2021, #43 in FY2022, #46 in FY2024 and #47 in FY2025; down 18 since FY2022.
62	Andworx, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,781,883	0.2%	Rank history: not on the FY2021 list, #64 in FY2022, #85 in FY2024 and #86 in FY2025; up 2 since FY2022.
63	The Donohoe Companies. Inc. Through AAA Complete Building Services Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$3,759,500	0.2%	Rank history: not on the FY2021 list, #60 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
64	Johnson Controls Industries Through Johnson Controls Building Automation Systems, LLC Top NAICS codes 541512 Computer Systems Design Services	$3,758,850	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	Eccalon, LLC Top NAICS codes 334290 Other Communications Equipment Manufacturing	$3,699,209	0.2%	Rank history: not on the FY2021 list, #55 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
66	Deloitte Consulting LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,550,248	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
67	C3.Ai, Inc.	$3,500,000	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
68	DCS Corporation Top NAICS codes 541330 Engineering Services	$3,436,500	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
69	Ati-Endyna JV, LLC Top NAICS codes 541620 Environmental Consulting Services	$3,311,578	0.2%	Rank history: #62 in FY2021, #61 in FY2022, #87 in FY2024 and not on the FY2025 list; down 8 since FY2022.
70	Kpmg L.L.P. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,228,493	0.2%	Rank history: #61 in FY2021, #51 in FY2022 and not on the FY2024–FY2025 lists; down 19 since FY2022.
71	Kunj Construction Corporation Top NAICS codes 236220 Commercial and Institutional Building Construction	$3,183,026	0.2%	Rank history: not on the FY2021 list, #23 in FY2022 and not on the FY2024–FY2025 lists; down 48 since FY2022.
72	Bechtel Corp Through National Aerospace Solutions, LLC Top NAICS codes 541330 Engineering Services	$3,088,257	0.2%	Rank history: #60 in FY2021, #82 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
73	Starfish Space Inc.	$3,000,000	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
74	Datarobot Inc.	$2,947,902	0.2%	Rank history: not on the FY2021 list, #97 in FY2022 and not on the FY2024–FY2025 lists; up 23 since FY2022.
75	Prime Response, Inc. Top NAICS codes 561210 Facilities Support Services	$2,925,081	0.1%	Rank history: #51 in FY2021, #62 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
76	The Bridge Group LLC Top NAICS codes 561920 Convention and Trade Show Organizers	$2,910,446	0.1%	Rank history: not on the FY2021 list, #54 in FY2022 and not on the FY2024–FY2025 lists; down 22 since FY2022.
77	Epmpoint Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$2,884,204	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
78	Metrostar Systems, LLC	$2,862,447	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #4 in FY2025; new.
79	Second Front Systems, Inc.	$2,810,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
80	Gapingvoid Culture Design Group LLC	$2,774,130	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
81	PM2 Strategies LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$2,743,265	0.1%	Rank history: not on the FY2021 list, #77 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
82	The Johns Hopkins University Through The Johns Hopkins University Applied Physics Laboratory LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$2,740,000	0.1%	Rank history: #58 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
83	Kitware Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,690,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Agile Decision Sciences, LLC Top NAICS codes 541512 Computer Systems Design Services	$2,609,463	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	R & K Solutions, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$2,596,635	0.1%	Rank history: #92 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 64 since FY2022.
86	The Clearing, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,580,795	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #70 in FY2025; up 39 since FY2022.
87	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,571,564	0.1%	Rank history: not on the FY2021 list, #59 in FY2022 and not on the FY2024–FY2025 lists; down 28 since FY2022.
88	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,570,799	0.1%	Rank history: #64 in FY2021, #81 in FY2022, not on the FY2024 list and #80 in FY2025; down 7 since FY2022.
89	Telemus Group LLC Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities 541611 Administrative Management and General Management Consulting Services	$2,539,779	0.1%	Rank history: #89 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 21 since FY2022.
90	Magellan Health, Inc. Through Magellan Federal, Inc. Top NAICS codes 624190 Other Individual and Family Services	$2,446,860	0.1%	Rank history: not on the FY2021 list, #48 in FY2022 and not on the FY2024–FY2025 lists; down 42 since FY2022.
91	Redhorse Corporation Top NAICS codes 611430 Professional and Management Development Training	$2,417,193	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 64 since FY2022.
92	Cedarville Engineering Group LLC Top NAICS codes 237310 Highway, Street, and Bridge Construction	$2,313,844	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Par Technology Corporation Through Par Government Systems Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,313,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 73 since FY2022.
94	Morsecorp, Inc.	$2,295,876	0.1%	Rank history: #27 in FY2021, not on the FY2022 list, #91 in FY2024 and not on the FY2025 list; returned.
95	Reach Power, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,250,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2024 and not on the FY2025 list; new.
96	CHS Middle East LLC Through Acuity-Chs, LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists)	$2,242,268	0.1%	Rank history: not on the FY2021 list, #91 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
97	Ashland Industrial Services, LLC Through A&E Elevator, LLC Top NAICS codes 238290 Other Building Equipment Contractors	$2,123,209	0.1%	Rank history: #100 in FY2021, #72 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
98	Hewlett Packard Enterprise Co Top NAICS codes 334111 Electronic Computer Manufacturing	$2,077,270	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
99	L3Harris Technologies, Inc. 3 awardees, including Fisica Applied Technologies, Inc. and L3 Technologies, Inc. Top NAICS codes 334517 Irradiation Apparatus Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,073,579	0.1%	Rank history: #40 in FY2021, not on the FY2022 list, #4 in FY2024 and not on the FY2025 list; up 167 since FY2022.
100	Tlingit Haida Tribal Business Corporation Through Kira Aviation Services LLC Top NAICS codes 561210 Facilities Support Services	$2,059,199	0.1%	Rank history: #82 in FY2021, #69 in FY2022 and not on the FY2024–FY2025 lists; down 31 since FY2022.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $1.96 billion obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2023 ran Oct 1, 2022 – Sep 30, 2023. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2022. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2022 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers