Top 100 Office of the Secretary of Defense Contractors, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541990 All Other Professional, Scientific, and Technical Services	$514,029,199	7.8%	Rank history: #3 in FY2021, #6 in FY2022, #3 in FY2023 and #2 in FY2025; up 2 since FY2023.
2	Fedex Corp Through Federal Express Corporation Top NAICS codes 492110 Couriers and Express Delivery Services	$340,790,127	5.2%	Rank history: #2 in FY2021, #4 in FY2022, #9 in FY2023 and #3 in FY2025; up 7 since FY2023.
3	National Security Technology Accelerator Inc.	$334,661,310	5.1%	Rank history: not on the FY2021 list, #26 in FY2022, #1 in FY2023 and #7 in FY2025; down 2 since FY2023.
4	Crowley Government Services Inc. Through Crowley Logistics, Inc. Top NAICS codes 488510 Freight Transportation Arrangement	$331,027,568	5.0%	Rank history: not on the FY2021–FY2022 lists, #2 in FY2023 and #14 in FY2025; down 2 since FY2023.
5	United Parcel Service Co. Top NAICS codes 492110 Couriers and Express Delivery Services 481112 Scheduled Freight Air Transportation	$233,798,920	3.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
6	Institute for Defense Analyses Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$230,048,586	3.5%	Rank history: #6 in FY2021, #23 in FY2022, #8 in FY2023 and #9 in FY2025; up 2 since FY2023.
7	The Mitre Corporation 2 awardees 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	$217,033,147	3.3%	Rank history: #1 in FY2021, #5 in FY2022, #4 in FY2023 and #18 in FY2025; down 3 since FY2023.
8	The Johns Hopkins University Applied Physics Laboratory LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$213,767,378	3.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
9	Huntington Ingalls Industries, Inc. 4 awardees, including HII Mission Technologies Corp Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611710 Educational Support Services	$202,399,024	3.1%	Rank history: not on the FY2021 list, #24 in FY2022, #5 in FY2023 and #6 in FY2025; down 4 since FY2023.
10	Federal Express Corporation Top NAICS codes 492110 Couriers and Express Delivery Services	$187,504,142	2.8%	Rank history: #47 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
11	Advanced Technology International	$176,893,776	2.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
12	International Auto Logistics, LLC Top NAICS codes 488999 All Other Support Activities for Transportation	$155,970,123	2.4%	Rank history: not on the FY2021 list, #10 in FY2022, #12 in FY2023 and #10 in FY2025; unchanged since FY2023.
13	Palantir Technologies Inc. 2 awardees, including Palantir USG Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 511210 Software Publishers 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$140,202,472	2.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and #5 in FY2025; up 60 since FY2023.
14	Analytic Services Inc. 2 awardees, including Advanced Technology International Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services 541330 Engineering Services	$88,877,285	1.4%	Rank history: #20 in FY2021, #15 in FY2022, #11 in FY2023 and #1 in FY2025; down 3 since FY2023.
15	Leidos Holdings, Inc. 8 awardees, including Leidos, Inc. Top NAICS codes 541330 Engineering Services 541930 Translation and Interpretation Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$87,644,127	1.3%	Rank history: #17 in FY2021, #17 in FY2022, #15 in FY2023 and #22 in FY2025; unchanged since FY2023.
16	American Systems Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services 541519 Other Computer Related Services	$84,129,287	1.3%	Rank history: #31 in FY2021, #20 in FY2022, #17 in FY2023 and #20 in FY2025; up 1 since FY2023.
17	Anduril Industries Inc.	$83,856,891	1.3%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and #8 in FY2025; up 18 since FY2023.
18	Science Applications International Corporation 4 awardees 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	$74,530,146	1.1%	Rank history: #13 in FY2021, #25 in FY2022, #30 in FY2023 and #19 in FY2025; up 12 since FY2023.
19	Triad National Security LLC Top NAICS codes 561210 Facilities Support Services	$72,019,304	1.1%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023 and not on the FY2025 list; down 3 since FY2023.
20	The Rand Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$71,312,406	1.1%	Rank history: #14 in FY2021, #14 in FY2022, #14 in FY2023 and #26 in FY2025; down 6 since FY2023.
21	Battelle Memorial Institute Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$58,655,681	0.9%	Rank history: #11 in FY2021, #21 in FY2022, #28 in FY2023 and #77 in FY2025; up 7 since FY2023.
22	Bwxt Advanced Technologies LLC	$56,030,498	0.9%	Rank history: #36 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
23	Avantus Federal LLC Top NAICS codes 541330 Engineering Services 541219 Other Accounting Services 541611 Administrative Management and General Management Consulting Services	$54,896,637	0.8%	Rank history: #12 in FY2021, #18 in FY2022, #18 in FY2023 and not on the FY2025 list; down 5 since FY2023.
24	Northrop Grumman Corporation 6 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 541330 Engineering Services	$45,391,839	0.7%	Rank history: #7 in FY2021, #3 in FY2022, #6 in FY2023 and #23 in FY2025; down 18 since FY2023.
25	BWX Technologies, Inc. Through Bwxt Advanced Technologies LLC	$43,392,700	0.7%	Rank history: not on the FY2021 list, #13 in FY2022, #13 in FY2023 and #15 in FY2025; down 12 since FY2023.
26	Rocket Lab National Security LLC	$42,359,240	0.6%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023 and not on the FY2025 list; up 49 since FY2023.
27	Tatitlek Corporation Through Tatitlek Technologies, LLC Top NAICS codes 541330 Engineering Services	$38,633,921	0.6%	Rank history: not on the FY2021–FY2022 lists, #19 in FY2023 and #70 in FY2025; down 8 since FY2023.
28	Systems Planning and Analysis, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541611 Administrative Management and General Management Consulting Services	$37,854,803	0.6%	Rank history: #24 in FY2021, #27 in FY2022, #25 in FY2023 and #32 in FY2025; down 3 since FY2023.
29	General Dynamics Corporation 4 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services	$37,678,247	0.6%	Rank history: #23 in FY2021, #19 in FY2022, #24 in FY2023 and #37 in FY2025; down 5 since FY2023.
30	Amentum Services, Inc. 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 561612 Security Guards and Patrol Services 541330 Engineering Services	$37,348,782	0.6%	Rank history: #95 in FY2021, #34 in FY2022, #27 in FY2023 and not on the FY2025 list; down 3 since FY2023.
31	CACI International Inc. 2 awardees, including Caci, Inc. - Federal and Caci Nss, LLC 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	$37,083,846	0.6%	Rank history: #34 in FY2021, #32 in FY2022, #26 in FY2023 and #25 in FY2025; down 5 since FY2023.
32	Hermeus Corp	$36,023,000	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	KBR Wyle Services LLC 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$35,801,638	0.5%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; new.
34	Space Exploration Technologies Corp.	$34,832,000	0.5%	Rank history: #33 in FY2021, #7 in FY2022, #85 in FY2023 and #38 in FY2025; up 51 since FY2023.
35	Riverside Research Institute Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$34,408,570	0.5%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and not on the FY2025 list; up 48 since FY2023.
36	Guidehouse Inc. 3 awardees Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$32,747,538	0.5%	Rank history: #55 in FY2021, #44 in FY2022, #53 in FY2023 and #69 in FY2025; up 17 since FY2023.
37	The Trustees of the Stevens Institute of Technology Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$31,913,571	0.5%	Rank history: #51 in FY2021, #71 in FY2022, #29 in FY2023 and #28 in FY2025; down 8 since FY2023.
38	Scientific Research Corporation Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services	$31,338,776	0.5%	Rank history: #42 in FY2021, #45 in FY2022, #33 in FY2023 and #29 in FY2025; down 5 since FY2023.
39	Strategic Analysis, Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541990 All Other Professional, Scientific, and Technical Services 541330 Engineering Services	$30,728,113	0.5%	Rank history: #35 in FY2021, #63 in FY2022, not on the FY2023 list and #51 in FY2025; up 84 since FY2023.
40	LMI Consulting, LLC Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services 561210 Facilities Support Services	$29,435,327	0.4%	Rank history: not on the FY2021 list, #51 in FY2022, #47 in FY2023 and #27 in FY2025; up 7 since FY2023.
41	Tecolote Research, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$28,178,198	0.4%	Rank history: #44 in FY2021, #40 in FY2022, #37 in FY2023 and #35 in FY2025; down 4 since FY2023.
42	Atlas Air Worldwide Holdings Inc. 4 awardees, including Polar Air Cargo Worldwide, Inc. and Atlas Air, Inc. Top NAICS codes 492110 Couriers and Express Delivery Services 481112 Scheduled Freight Air Transportation	$27,784,985	0.4%	Rank history: #25 in FY2021, #52 in FY2022, #72 in FY2023 and #53 in FY2025; up 30 since FY2023.
43	Redhorse Corporation 2 awardees Top NAICS codes 611430 Professional and Management Development Training 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$26,241,452	0.4%	Rank history: #43 in FY2021, #54 in FY2022, #56 in FY2023 and #57 in FY2025; up 13 since FY2023.
44	The Pennsylvania State University Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$25,852,807	0.4%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; up 305 since FY2023.
45	Northern Air Cargo, LLC Top NAICS codes 481112 Scheduled Freight Air Transportation	$25,577,370	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
46	Modern Technology Solutions, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$25,438,114	0.4%	Rank history: #61 in FY2021, #59 in FY2022, #41 in FY2023 and #33 in FY2025; down 5 since FY2023.
47	Applied Research Associates, Inc. 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services 541512 Computer Systems Design Services	$24,397,281	0.4%	Rank history: #58 in FY2021, #38 in FY2022, #34 in FY2023 and #52 in FY2025; down 13 since FY2023.
48	Alaska Air Group Inc Through Alaska Airlines, Inc. Top NAICS codes 481112 Scheduled Freight Air Transportation	$23,529,199	0.4%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #76 in FY2025; up 46 since FY2023.
49	Qbase, LLC Top NAICS codes 541519 Other Computer Related Services	$23,444,018	0.4%	Rank history: #38 in FY2021, #42 in FY2022, #50 in FY2023 and not on the FY2025 list; up 1 since FY2023.
50	Eccalon, LLC Top NAICS codes 541512 Computer Systems Design Services 334290 Other Communications Equipment Manufacturing	$22,796,574	0.3%	Rank history: #52 in FY2021, #33 in FY2022, #52 in FY2023 and #75 in FY2025; up 2 since FY2023.
51	The George Mason University Instructional Foundation, Inc. Through George Mason University Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$21,135,832	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	Deloitte 2 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541211 Offices of Certified Public Accountants 541990 All Other Professional, Scientific, and Technical Services	$20,337,119	0.3%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
53	Lawrence Livermore National Security, LLC	$19,901,754	0.3%	Rank history: #22 in FY2021, #29 in FY2022, not on the FY2023 list and #16 in FY2025; returned.
54	Wulco Inc. Top NAICS codes 336992 Military Armored Vehicle, Tank, and Tank Component Manufacturing	$19,699,450	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	HII Mission Technologies Corp Top NAICS codes 541330 Engineering Services	$19,508,708	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	Jaria LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$18,918,656	0.3%	Rank history: not on the FY2021 list, #90 in FY2022, #61 in FY2023 and #54 in FY2025; up 5 since FY2023.
57	Vector Atomic Inc	$18,700,000	0.3%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2025; up 105 since FY2023.
58	Group W Inc. Top NAICS codes 541511 Custom Computer Programming Services 541330 Engineering Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$18,551,405	0.3%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and not on the FY2025 list; up 16 since FY2023.
59	Chesapeake Technology International, Corp. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$18,485,065	0.3%	Rank history: #78 in FY2021, #61 in FY2022, #58 in FY2023 and not on the FY2025 list; down 1 since FY2023.
60	American Airlines, Inc. Top NAICS codes 481112 Scheduled Freight Air Transportation	$17,314,660	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	Zeno Power Systems Inc.	$17,000,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
62	Amentum Holdings, Inc. Through Amentum Services, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$16,916,856	0.3%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
63	Arlo Solutions L.L.C. Top NAICS codes 541519 Other Computer Related Services 611430 Professional and Management Development Training 541611 Administrative Management and General Management Consulting Services	$16,489,815	0.3%	Rank history: not on the FY2021 list, #75 in FY2022, #69 in FY2023 and #40 in FY2025; up 6 since FY2023.
64	Seed Innovations, LLC Top NAICS codes 541511 Custom Computer Programming Services	$16,010,106	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 74 since FY2023.
65	Cellcube Energy Storage Inc.	$15,938,235	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 129 since FY2023.
66	SNA International LLC Top NAICS codes 621511 Medical Laboratories	$15,678,460	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	Nanograf Corporation	$15,226,655	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
68	Pavcon LLC	$14,989,427	0.2%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2025; new.
69	Koniag Management Solutions LLC Top NAICS codes 541512 Computer Systems Design Services	$14,869,907	0.2%	Rank history: #84 in FY2021, #76 in FY2022, #78 in FY2023 and not on the FY2025 list; up 9 since FY2023.
70	IAN Evan & Alexander Corp Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$14,778,821	0.2%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and #61 in FY2025; down 10 since FY2023.
71	Siemens Energy, Inc.	$14,208,480	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Karem Aircraft, Inc.	$14,118,990	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 129 since FY2023.
73	Hawaiian Holdings Inc Through Hawaiian Airlines, Inc. Top NAICS codes 481112 Scheduled Freight Air Transportation	$14,050,339	0.2%	Rank history: #66 in FY2021, #46 in FY2022, #44 in FY2023 and not on the FY2025 list; down 29 since FY2023.
74	Red River Technology LLC Top NAICS codes 541519 Other Computer Related Services	$13,722,092	0.2%	Rank history: not on the FY2021 list, #93 in FY2022, not on the FY2023 list and not on the FY2025 list; up 36 since FY2023.
75	Georgia TECH Applied Research Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$13,182,840	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Nakupuna Consulting LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 561110 Office Administrative Services	$12,988,908	0.2%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; up 88 since FY2023.
77	Alion Science and Technology Corporation Through HII Mission Technologies Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$11,937,736	0.2%	Rank history: #5 in FY2021, not on the FY2022 list, #23 in FY2023 and not on the FY2025 list; down 54 since FY2023.
78	CNH Industrial N.V. Through Aerostar International, LLC	$11,672,114	0.2%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2025 list; up 3 since FY2023.
79	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 611310 Colleges, Universities, and Professional Schools	$11,429,900	0.2%	Rank history: #4 in FY2021, #9 in FY2022, #10 in FY2023 and not on the FY2025 list; down 69 since FY2023.
80	Cornerstone Ondemand Inc. Top NAICS codes 611420 Computer Training	$11,287,574	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
81	Logistics Management Institute 2 awardees Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541611 Administrative Management and General Management Consulting Services 541330 Engineering Services	$11,239,154	0.2%	Rank history: #16 in FY2021, #36 in FY2022, #43 in FY2023 and #68 in FY2025; down 38 since FY2023.
82	Consolidated Nuclear Security, LLC Top NAICS codes 561210 Facilities Support Services	$11,004,012	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 31 since FY2023.
83	Cybermedia Technologies LLC Top NAICS codes 611710 Educational Support Services	$10,981,834	0.2%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023 and #88 in FY2025; up 1 since FY2023.
84	Asgn Incorporated Through ECS Federal, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$10,797,843	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Applied Research Institute Inc.	$10,374,015	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 16 since FY2023.
86	University of Maryland, College Park Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities 611310 Colleges, Universities, and Professional Schools	$10,244,269	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Metropolitan Van and Storage Inc. Top NAICS codes 493110 General Warehousing and Storage	$9,915,654	0.2%	Rank history: not on the FY2021 list, #99 in FY2022, #87 in FY2023 and not on the FY2025 list; unchanged since FY2023.
88	E.f. Kearney, Limited Through Kearney & Company, P.C. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541219 Other Accounting Services 541211 Offices of Certified Public Accountants	$9,817,758	0.1%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2025; new.
89	Mantech Tsg-2 Joint Venture Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$9,549,864	0.1%	Rank history: #18 in FY2021, not on the FY2022–FY2023 lists and #46 in FY2025; up 88 since FY2023.
90	Forge Group, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 561110 Office Administrative Services 541330 Engineering Services	$9,453,393	0.1%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; up 17 since FY2023.
91	MPF Federal, LLC Top NAICS codes 611710 Educational Support Services 541611 Administrative Management and General Management Consulting Services 561110 Office Administrative Services	$9,240,460	0.1%	Rank history: #30 in FY2021, #53 in FY2022, #62 in FY2023 and not on the FY2025 list; down 29 since FY2023.
92	National Air Cargo Group, Inc. Top NAICS codes 481112 Scheduled Freight Air Transportation	$9,164,927	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Information Systems Solutions, Inc. Top NAICS codes 541330 Engineering Services	$9,061,725	0.1%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; new.
94	Chitra Productions LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541330 Engineering Services	$9,007,065	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	The Texas A&M University System Through Texas A&M Engineering Experiment Station	$8,860,928	0.1%	Rank history: #68 in FY2021, #37 in FY2022, #51 in FY2023 and not on the FY2025 list; down 44 since FY2023.
96	Sancorp Consulting, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$8,537,428	0.1%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; up 34 since FY2023.
97	ICR Inc Top NAICS codes 541511 Custom Computer Programming Services	$8,342,534	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Culmen International, LLC Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$8,049,630	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 53 since FY2023.
99	Saildrone Inc.	$8,031,452	0.1%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and not on the FY2025 list; down 53 since FY2023.
100	Galapagos Federal Systems LLC Top NAICS codes 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$7,999,060	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 17 since FY2023.

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 $6.58 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