Top 100 DOD Washington Headquarters Service Contractors, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541990 All Other Professional, Scientific, and Technical Services	$503,100,582	20.6%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #3 in FY2025; up 1 since FY2023.
2	National Security Technology Accelerator Inc.	$454,858,220	18.6%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; down 1 since FY2023.
3	Deloitte Through Deloitte Consulting LLP Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541611 Administrative Management and General Management Consulting Services	$105,442,619	4.3%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
4	L3Harris Technologies, Inc. 3 awardees, including Fisica Applied Technologies, Inc. and L3 Technologies, Inc. Top NAICS codes 334517 Irradiation Apparatus Manufacturing 332993 Ammunition (except Small Arms) Manufacturing	$44,851,322	1.8%	Rank history: #40 in FY2021, not on the FY2022 list, #99 in FY2023 and not on the FY2025 list; up 95 since FY2023.
5	Honeywell International Inc. 2 awardees Top NAICS codes 333242 Semiconductor Machinery Manufacturing 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$40,713,833	1.7%	Rank history: #57 in FY2021, #17 in FY2022, #5 in FY2023 and #52 in FY2025; unchanged since FY2023.
6	Northrop Grumman Corporation 7 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing	$30,931,771	1.3%	Rank history: not on the FY2021 list, #9 in FY2022, #7 in FY2023 and #5 in FY2025; up 1 since FY2023.
7	Institute for Defense Analyses Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$29,677,422	1.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
8	Servicesource Inc. Top NAICS codes 561210 Facilities Support Services	$29,633,614	1.2%	Rank history: #4 in FY2021, #6 in FY2022, #12 in FY2023 and #10 in FY2025; up 4 since FY2023.
9	The Cherokee Nation Through Cherokee CRC LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$26,343,333	1.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
10	North Point Defense Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$24,729,309	1.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 337 since FY2023.
11	Alliance for Energy Innovation, LLC Top NAICS codes 541711 Research and Development in Biotechnology	$24,067,027	1.0%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #97 in FY2025; up 30 since FY2023.
12	Sehlke Consulting LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$21,472,092	0.9%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and not on the FY2025 list; up 41 since FY2023.
13	IST Research, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$20,881,609	0.9%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
14	Johnson Controls Building Automation Systems, LLC Top NAICS codes 541512 Computer Systems Design Services	$20,855,376	0.9%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
15	Palantir Technologies Inc. Through Palantir USG Inc.	$20,658,646	0.8%	Rank history: not on the FY2021 list, #4 in FY2022, not on the FY2023 list and #55 in FY2025; returned.
16	Innovasystems International LLC Top NAICS codes 541330 Engineering Services	$20,055,991	0.8%	Rank history: #36 in FY2021, #58 in FY2022, #28 in FY2023 and #71 in FY2025; up 12 since FY2023.
17	Science Applications International Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$19,463,371	0.8%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
18	General Atomics Aeronautical Systems, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336411 Aircraft Manufacturing	$18,810,293	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
19	HSU Development, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$18,287,818	0.7%	Rank history: not on the FY2021 list, #41 in FY2022, #32 in FY2023 and not on the FY2025 list; up 13 since FY2023.
20	Anduril Industries Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$18,025,000	0.7%	Rank history: not on the FY2021 list, #35 in FY2022, #8 in FY2023 and not on the FY2025 list; down 12 since FY2023.
21	Attain Consulting Group LLC Through Maximus Federal Technology Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$17,706,740	0.7%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
22	Qcm, Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors 236220 Commercial and Institutional Building Construction	$17,559,937	0.7%	Rank history: #26 in FY2021, #30 in FY2022, #31 in FY2023 and #43 in FY2025; up 9 since FY2023.
23	Nhanced Semiconductors, Inc.	$17,508,000	0.7%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #16 in FY2025; down 20 since FY2023.
24	Oceaneering International Inc	$16,969,271	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
25	Nakupuna Consulting LLC Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services 516210 Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers	$15,727,155	0.6%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023 and #19 in FY2025; up 5 since FY2023.
26	Addon Services LLC Top NAICS codes 237310 Highway, Street, and Bridge Construction	$15,709,617	0.6%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2025; new.
27	Lockheed Martin Corporation 4 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 511210 Software Publishers 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing	$15,347,114	0.6%	Rank history: #10 in FY2021, #3 in FY2022, #29 in FY2023 and #23 in FY2025; up 2 since FY2023.
28	Qualx, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$15,252,967	0.6%	Rank history: #25 in FY2021, #11 in FY2022, #14 in FY2023 and #11 in FY2025; down 14 since FY2023.
29	Concurrent Technologies Corp Top NAICS codes 541330 Engineering Services	$14,766,369	0.6%	Rank history: not on the FY2021 list, #25 in FY2022, #17 in FY2023 and #28 in FY2025; down 12 since FY2023.
30	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top NAICS codes 541713 Research and Development in Nanotechnology 336411 Aircraft Manufacturing	$14,205,050	0.6%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and not on the FY2025 list; down 6 since FY2023.
31	Scale AI, Inc.	$13,618,990	0.6%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and not on the FY2025 list; up 8 since FY2023.
32	Sealing Technologies LLC	$13,266,195	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Kongsberg Underwater Technology LLC Through Kongsberg Discovery US, LLC	$12,359,438	0.5%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
34	Nana Regional Corporation Inc. 2 awardees, including Akima Data Management LLC and Affigent, LLC Top NAICS codes 541512 Computer Systems Design Services 334111 Electronic Computer Manufacturing	$12,297,870	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
35	Huntington Ingalls Industries, Inc. 2 awardees, including Enlighten It Consulting LLC and HII Mission Technologies Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541511 Custom Computer Programming Services	$12,252,694	0.5%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; new.
36	Didlake Inc. Top NAICS codes 561720 Janitorial Services	$12,035,978	0.5%	Rank history: #19 in FY2021, #7 in FY2022, not on the FY2023 list and #32 in FY2025; up 93 since FY2023.
37	Integrated Solutions for Systems Inc. Top NAICS codes 332994 Small Arms, Ordnance, and Ordnance Accessories Manufacturing	$11,937,378	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
38	The CNA Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$11,700,088	0.5%	Rank history: #29 in FY2021, #31 in FY2022, #22 in FY2023 and #37 in FY2025; down 16 since FY2023.
39	Amazon Web Services, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$11,585,626	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Alaska Native Government Services LLC Through Copper River Technologies, LLC Top NAICS codes 541519 Other Computer Related Services 541330 Engineering Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$11,205,181	0.5%	Rank history: #33 in FY2021, #24 in FY2022, #15 in FY2023 and #61 in FY2025; down 25 since FY2023.
41	Coldquanta Inc. Through Infleqtion Quantum, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$10,900,000	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	The Tomorrow Companies Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$10,229,075	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
43	Radiance Technologies, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$9,648,046	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
44	HDR Architecture, Inc. Top NAICS codes 541330 Engineering Services	$9,450,751	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	Southwest Research Institute Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$9,448,031	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
46	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	$9,296,731	0.4%	Rank history: #8 in FY2021, #43 in FY2022, #61 in FY2023 and #47 in FY2025; up 15 since FY2023.
47	Atg, Inc.	$9,000,000	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Signature Renovations LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$8,817,472	0.4%	Rank history: not on the FY2021 list, #32 in FY2022, #11 in FY2023 and #9 in FY2025; down 37 since FY2023.
49	Applied Intuition, Inc.	$8,750,000	0.4%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; new.
50	RTX Corporation 7 awardees, including Raytheon Company Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611430 Professional and Management Development Training 811213 Communication Equipment Repair and Maintenance	$8,629,137	0.4%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
51	Coho Consulting Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541614 Process, Physical Distribution, and Logistics Consulting Services	$8,465,682	0.3%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and #41 in FY2025; down 8 since FY2023.
52	Cathexis LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$8,426,867	0.3%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
53	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) 541990 All Other Professional, Scientific, and Technical Services	$8,248,986	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	General Dynamics Corporation 4 awardees, including Csra LLC, Praxis Engineering Technologies LLC and General Dynamics Information Technology, Inc. Top NAICS codes 541511 Custom Computer Programming Services 511210 Software Publishers 541519 Other Computer Related Services	$7,936,036	0.3%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023 and #22 in FY2025; down 45 since FY2023.
55	Chimes District of Columbia Inc. Top NAICS codes 561720 Janitorial Services	$7,884,215	0.3%	Rank history: #21 in FY2021, #10 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
56	Tekpro Support Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$7,697,048	0.3%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
57	Ametek Inc. Through Advanced Measurement Technology Inc. Top NAICS codes 334519 Other Measuring and Controlling Device Manufacturing	$7,498,031	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Invictus International Consulting LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$7,432,826	0.3%	Rank history: not on the FY2021–FY2023 lists and #98 in FY2025; new.
59	Amentum Services, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$7,302,389	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
60	Joby Aviation Inc. Through Joby Aero Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$7,300,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	Joby Aero Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$6,500,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
62	DEF-Logix Inc Top NAICS codes 511210 Software Publishers	$6,359,232	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	Isi-Markon JV LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$6,036,912	0.2%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
64	Securigence LLC Top NAICS codes 541511 Custom Computer Programming Services	$5,926,150	0.2%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
65	Chinook Systems Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$5,907,696	0.2%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2025; new.
66	Maximus Federal Technology Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$5,746,750	0.2%	Rank history: #14 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
67	University of Dayton Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$5,565,704	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 117 since FY2023.
68	CCS Lintech JV LLC Top NAICS codes 541512 Computer Systems Design Services	$5,461,555	0.2%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; up 118 since FY2023.
69	Hdr, Inc. Through HDR Architecture, Inc. Top NAICS codes 541330 Engineering Services	$5,258,179	0.2%	Rank history: #49 in FY2021, #29 in FY2022, #34 in FY2023 and #57 in FY2025; down 35 since FY2023.
70	Quicklogic Corp	$5,256,000	0.2%	Rank history: not on the FY2021 list, #34 in FY2022, #19 in FY2023 and #45 in FY2025; down 51 since FY2023.
71	Silver Lake - TMG Jv2, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$5,208,011	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Calspan, LLC Top NAICS codes 488190 Other Support Activities for Air Transportation	$5,158,431	0.2%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
73	Reach Power, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$5,131,326	0.2%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and not on the FY2025 list; up 22 since FY2023.
74	Kpmg LLP Top NAICS codes 541211 Offices of Certified Public Accountants	$5,105,101	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Arlo Solutions L.L.C. Top NAICS codes 561110 Office Administrative Services	$4,935,846	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 98 since FY2023.
76	Parsons Corporation Through Parsons Government Services Inc. Top NAICS codes 541511 Custom Computer Programming Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$4,774,626	0.2%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and not on the FY2025 list; down 32 since FY2023.
77	Applied Environmental Inc. Top NAICS codes 541620 Environmental Consulting Services	$4,729,811	0.2%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and #74 in FY2025; down 30 since FY2023.
78	Nakupuna Solutions, LLC Top NAICS codes 561210 Facilities Support Services 541611 Administrative Management and General Management Consulting Services	$4,704,958	0.2%	Rank history: #16 in FY2021, #13 in FY2022, #37 in FY2023 and not on the FY2025 list; down 41 since FY2023.
79	Advanced Technology International	$4,680,920	0.2%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
80	Jensen Hughes, Inc. Top NAICS codes 541330 Engineering Services	$4,674,752	0.2%	Rank history: #55 in FY2021, #52 in FY2022, #54 in FY2023 and #72 in FY2025; down 26 since FY2023.
81	R & R Janitorial, Painting & Building Services Inc. Top NAICS codes 561720 Janitorial Services	$4,637,313	0.2%	Rank history: #46 in FY2021, #36 in FY2022, #55 in FY2023 and #75 in FY2025; down 26 since FY2023.
82	Bering Straits Professional Services, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$4,473,789	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
83	Research Innovations Incorporated	$4,444,444	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	Shoulder 2 Shoulder Inc. Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services	$4,350,000	0.2%	Rank history: #78 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 33 since FY2023.
85	Andworx, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,085,246	0.2%	Rank history: not on the FY2021 list, #64 in FY2022, #62 in FY2023 and #86 in FY2025; down 23 since FY2023.
86	Accenture Federal Services LLC 2 awardees Top NAICS codes 511210 Software Publishers 541990 All Other Professional, Scientific, and Technical Services	$4,052,803	0.2%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
87	Ati-Endyna JV, LLC Top NAICS codes 541620 Environmental Consulting Services	$4,015,763	0.2%	Rank history: #62 in FY2021, #61 in FY2022, #69 in FY2023 and not on the FY2025 list; down 18 since FY2023.
88	Gartner, Inc.	$3,960,651	0.2%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2025; up 169 since FY2023.
89	Chenega It Enterprise Services, LLC Top NAICS codes 541512 Computer Systems Design Services	$3,880,254	0.2%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and not on the FY2025 list; down 29 since FY2023.
90	Seneca Federal Solutions, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$3,839,759	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	Morsecorp, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,685,750	0.2%	Rank history: #27 in FY2021, not on the FY2022 list, #94 in FY2023 and not on the FY2025 list; up 3 since FY2023.
92	Fibertek, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,583,644	0.1%	Rank history: #95 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
93	The Boeing Company Top NAICS codes 336411 Aircraft Manufacturing	$3,555,202	0.1%	Rank history: #9 in FY2021, #16 in FY2022, not on the FY2023 list and not on the FY2025 list; up 69 since FY2023.
94	By Light Professional It Services LLC Top NAICS codes 541512 Computer Systems Design Services	$3,521,700	0.1%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2025; new.
95	Cobham Mission Systems Orchard Park Inc. Through Frontgrade Colorado Springs LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,500,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	Chugach Technical Solutions LLC Top NAICS codes 541330 Engineering Services	$3,486,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	Bering-Weston JV, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$3,221,998	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Redhorse Corporation Top NAICS codes 611430 Professional and Management Development Training	$3,059,705	0.1%	Rank history: #66 in FY2021, #76 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
99	Jlgov LLC Top NAICS codes 541512 Computer Systems Design Services	$3,032,627	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
100	E.f. Kearney, Limited Through Kearney & Company, P.C. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,003,836	0.1%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; new.

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 $2.44 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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