Top 100 Defense Security Cooperation Agency Contractors, FY2025

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	$81,016,013	28.0%	Rank history: #5 in FY2021, #2 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Great Hill Solutions, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services 541990 All Other Professional, Scientific, and Technical Services	$22,302,256	7.7%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; up 1 since FY2024.
3	Deloitte 2 awardees, including Deloitte & Touche LLP and Deloitte Consulting LLP Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services 541219 Other Accounting Services	$22,264,561	7.7%	Rank history: #4 in FY2021, #4 in FY2022, #9 in FY2023 and #5 in FY2024; up 2 since FY2024.
4	Huntington Ingalls Industries, Inc. 2 awardees, including HII Mission Technologies Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611710 Educational Support Services	$21,048,178	7.3%	Rank history: #28 in FY2021, #13 in FY2022, #8 in FY2023 and #2 in FY2024; down 2 since FY2024.
5	Dexis Interactive Incorporated Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$18,089,196	6.2%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #4 in FY2024; down 1 since FY2024.
6	Infopoint LLC Top NAICS codes 541511 Custom Computer Programming Services	$11,015,947	3.8%	Rank history: #2 in FY2021, #5 in FY2022, #12 in FY2023 and #6 in FY2024; unchanged since FY2024.
7	Morgan 6, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$9,337,200	3.2%	Rank history: not on the FY2021 list, #11 in FY2022, #11 in FY2023 and #8 in FY2024; up 1 since FY2024.
8	American Systems Corporation Top NAICS codes 541511 Custom Computer Programming Services	$8,090,176	2.8%	Rank history: not on the FY2021 list, #9 in FY2022, #7 in FY2023 and #9 in FY2024; up 1 since FY2024.
9	Koniag, Inc. 2 awardees, including Koniag Professional Services, LLC and Koniag Management Solutions LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$7,812,695	2.7%	Rank history: #26 in FY2021, #27 in FY2022, #31 in FY2023 and #59 in FY2024; up 50 since FY2024.
10	White Pine Innovations, LLC Top NAICS codes 611710 Educational Support Services	$6,743,170	2.3%	Rank history: not on the FY2021–FY2024 lists; new.
11	Kpmg LLP Top NAICS codes 541219 Other Accounting Services	$6,550,039	2.3%	Rank history: not on the FY2021–FY2024 lists; new.
12	Nana Regional Corporation, Inc. 2 awardees, including Akima Data Management LLC and Affigent, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541519 Other Computer Related Services	$6,166,269	2.1%	Rank history: not on the FY2021–FY2024 lists; new.
13	Consortium Management Group, Inc.	$5,821,027	2.0%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; down 6 since FY2024.
14	Hunatek-Culmen JV, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,936,417	1.7%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2024; up 6 since FY2024.
15	Arizona State University Top NAICS codes 611310 Colleges, Universities, and Professional Schools	$4,666,860	1.6%	Rank history: not on the FY2021–FY2024 lists; new.
16	Sikich CPA LLC Top NAICS codes 541211 Offices of Certified Public Accountants	$4,241,835	1.5%	Rank history: not on the FY2021 list, #14 in FY2022, #15 in FY2023 and #17 in FY2024; up 1 since FY2024.
17	Organizational Development Resource Group, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,230,704	1.5%	Rank history: #19 in FY2021, #25 in FY2022, #26 in FY2023 and #12 in FY2024; down 5 since FY2024.
18	Bristol Bay Native Corporation Through Tekpro Support Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,219,702	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
19	Starlo Innovation, LLC Top NAICS codes 541519 Other Computer Related Services	$2,249,840	0.8%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2024; down 4 since FY2024.
20	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$2,203,302	0.8%	Rank history: #52 in FY2021, #34 in FY2022, #49 in FY2023 and #26 in FY2024; up 6 since FY2024.
21	V2X, Inc. Through V2X Systems LLC Top NAICS codes 541519 Other Computer Related Services	$2,095,729	0.7%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2024; up 6 since FY2024.
22	Armed Forces Recreation Centers Europe Top NAICS codes 721110 Hotels (except Casino Hotels) and Motels 812320 Drycleaning and Laundry Services (except Coin-Operated)	$1,997,052	0.7%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and #42 in FY2024; up 20 since FY2024.
23	G3 Innovative Solutions LLC Top NAICS codes 541511 Custom Computer Programming Services	$1,983,968	0.7%	Rank history: not on the FY2021 list, #17 in FY2022, #30 in FY2023 and #23 in FY2024; unchanged since FY2024.
24	Carahsoft Technology Corp Top NAICS codes 334111 Electronic Computer Manufacturing 511210 Software Publishers 513210 Software Publishers	$1,773,527	0.6%	Rank history: #45 in FY2021, #16 in FY2022, #27 in FY2023 and #24 in FY2024; unchanged since FY2024.
25	Western Door Federal, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,645,245	0.6%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2024; up 3 since FY2024.
26	TFC Consulting Inc. Top NAICS codes 541219 Other Accounting Services	$1,565,508	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
27	Kallman Worldwide Inc. Top NAICS codes 561920 Convention and Trade Show Organizers	$1,484,819	0.5%	Rank history: #36 in FY2021, #39 in FY2022, #22 in FY2023 and #38 in FY2024; up 11 since FY2024.
28	Four LLC Top NAICS codes 541519 Other Computer Related Services	$1,403,550	0.5%	Rank history: #27 in FY2021, #30 in FY2022, #32 in FY2023 and #30 in FY2024; up 2 since FY2024.
29	Forge Group, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$1,275,300	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
30	Blackstone Consulting, Inc. Top NAICS codes 722310 Food Service Contractors	$949,203	0.3%	Rank history: #43 in FY2021, #28 in FY2022, #24 in FY2023 and #19 in FY2024; down 11 since FY2024.
31	DJS Financial Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$938,246	0.3%	Rank history: #32 in FY2021, not on the FY2022–FY2023 lists and #47 in FY2024; up 16 since FY2024.
32	Metaphase Consulting LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$935,259	0.3%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 7 since FY2024.
33	Professionlx Ltd Top NAICS codes 512290 Other Sound Recording Industries	$882,383	0.3%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and #32 in FY2024; down 1 since FY2024.
34	Culmen International, LLC Top NAICS codes 611630 Language Schools 561110 Office Administrative Services	$868,819	0.3%	Rank history: #44 in FY2021, #43 in FY2022, #43 in FY2023 and #41 in FY2024; up 7 since FY2024.
35	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$829,901	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
36	Tetra Tech, Inc. Through Management Systems International, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$827,928	0.3%	Rank history: #3 in FY2021, #7 in FY2022, #4 in FY2023 and #11 in FY2024; down 25 since FY2024.
37	Target Media-Mid Atlantic Inc. Top NAICS codes 541511 Custom Computer Programming Services	$802,030	0.3%	Rank history: #35 in FY2021, #37 in FY2022, #56 in FY2023 and #29 in FY2024; down 8 since FY2024.
38	Govsmart, Inc. Top NAICS codes 541519 Other Computer Related Services	$689,483	0.2%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2024; up 8 since FY2024.
39	Blackboard LLC Top NAICS codes 511210 Software Publishers	$652,664	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
40	The CNA Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$600,000	0.2%	Rank history: #39 in FY2021, #41 in FY2022, #28 in FY2023 and #37 in FY2024; down 3 since FY2024.
41	Act1 Federal LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$508,952	0.2%	Rank history: #7 in FY2021, #6 in FY2022, #5 in FY2023 and #10 in FY2024; down 31 since FY2024.
42	Lilium LLC Top NAICS codes 541614 Process, Physical Distribution, and Logistics Consulting Services	$492,996	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
43	Silver Chain Kuwait Company Top NAICS codes 561990 All Other Support Services 561210 Facilities Support Services	$486,762	0.2%	Rank history: #42 in FY2021, #42 in FY2022, #41 in FY2023 and #40 in FY2024; down 3 since FY2024.
44	Dell Technologies Inc. 2 awardees, including Dell Marketing L.P. and Dell Federal Systems L.P Top NAICS codes 511210 Software Publishers 513210 Software Publishers	$421,207	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; up 14 since FY2024.
45	Teya Enterprises LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$382,348	0.1%	Rank history: #9 in FY2021, #8 in FY2022, #6 in FY2023 and not on the FY2024 list; returned.
46	The QED Group LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$382,163	0.1%	Rank history: not on the FY2021 list, #3 in FY2022 and not on the FY2023–FY2024 lists; returned.
47	413 LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$277,184	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
48	Decibel Management, LLC Top NAICS codes 561920 Convention and Trade Show Organizers	$275,000	0.1%	Rank history: not on the FY2021 list, #51 in FY2022, #51 in FY2023 and #56 in FY2024; up 8 since FY2024.
49	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$268,528	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
50	Blue Sky Innovative Solutions, LLC Top NAICS codes 541810 Advertising Agencies	$267,648	0.1%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2024; up 11 since FY2024.
51	Advanced Decision Vectors LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$259,745	0.1%	Rank history: not on the FY2021 list, #47 in FY2022, not on the FY2023 list and #62 in FY2024; up 11 since FY2024.
52	Integrated Data Services, LLC Top NAICS codes 541511 Custom Computer Programming Services	$257,057	0.1%	Rank history: #31 in FY2021, #32 in FY2022, #39 in FY2023 and #31 in FY2024; down 21 since FY2024.
53	CDW Government LLC Through Sirius Federal LLC Top NAICS codes 541519 Other Computer Related Services	$238,484	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
54	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top NAICS codes 541519 Other Computer Related Services	$216,414	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
55	Quiet Professionals, LLC Through Spathe Systems LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$189,999	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
56	Park Hotels & Resorts Inc. Through Crystal City Lessee LLC Top NAICS codes 721110 Hotels (except Casino Hotels) and Motels	$184,367	0.1%	Rank history: not on the FY2021–FY2024 lists; up 61 since FY2024.
57	Logistics Management Institute Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$162,616	0.1%	Rank history: #38 in FY2021, #12 in FY2022, #10 in FY2023 and #39 in FY2024; down 18 since FY2024.
58	International-Business Center TOV Top NAICS codes 721110 Hotels (except Casino Hotels) and Motels	$161,656	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
59	Presidio Government Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$142,911	<0.1%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2024; up 18 since FY2024.
60	Temenos, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$140,367	<0.1%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2024; up 15 since FY2024.
61	The Association of the United States Army Top NAICS codes 561920 Convention and Trade Show Organizers	$133,988	<0.1%	Rank history: #99 in FY2021, not on the FY2022 list, #66 in FY2023 and not on the FY2024 list; up 76 since FY2024.
62	Alaka`i Services Group Inc. Top NAICS codes 561110 Office Administrative Services	$122,922	<0.1%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023 and #65 in FY2024; up 3 since FY2024.
63	Stellar Innovations & Solutions Inc. Top NAICS codes 541519 Other Computer Related Services	$113,658	<0.1%	Rank history: #48 in FY2021, #60 in FY2022, #61 in FY2023 and #80 in FY2024; up 17 since FY2024.
64	B.f. Saul Property Company 2 awardees Top NAICS codes 721110 Hotels (except Casino Hotels) and Motels	$111,670	<0.1%	Rank history: #90 in FY2021, #40 in FY2022, #37 in FY2023 and #51 in FY2024; down 13 since FY2024.
65	Dynamic Systems Inc. Top NAICS codes 541519 Other Computer Related Services	$109,597	<0.1%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2024; down 29 since FY2024.
66	Redhawk It Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$107,635	<0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and #71 in FY2024; up 5 since FY2024.
67	ASO International Group Inc. Top NAICS codes 541511 Custom Computer Programming Services	$105,097	<0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and #81 in FY2024; up 14 since FY2024.
68	Insight Public Sector Inc. Top NAICS codes 541519 Other Computer Related Services	$100,066	<0.1%	Rank history: not on the FY2021 list, #58 in FY2022, #57 in FY2023 and #53 in FY2024; down 15 since FY2024.
69	Starlight Corp Top NAICS codes 561720 Janitorial Services	$99,937	<0.1%	Rank history: #60 in FY2021, #71 in FY2022 and not on the FY2023–FY2024 lists; returned.
70	Verizon 3 awardees, including Verizon Business Network Services LLC, Cellco Partnership and MCI Communications Services LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517112 Wireless Telecommunications Carriers (except Satellite)	$95,376	<0.1%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; up 27 since FY2024.
71	Cennet Akar Taxiunternehmen Top NAICS codes 485310 Taxi and Ridesharing Services	$91,956	<0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and not on the FY2024 list; up 47 since FY2024.
72	A.p. Inspections, L.L.C. Top NAICS codes 541614 Process, Physical Distribution, and Logistics Consulting Services	$90,005	<0.1%	Rank history: #91 in FY2021, #73 in FY2022, #80 in FY2023 and #94 in FY2024; up 22 since FY2024.
73	Iron Bow Technologies, LLC Top NAICS codes 541519 Other Computer Related Services	$89,989	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	Procon OOD Top NAICS codes 323111 Commercial Printing (except Screen and Books)	$86,920	<0.1%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 4 since FY2024.
75	Atilla Colak Taxiunternehmen Top NAICS codes 485310 Taxi and Ridesharing Services	$86,812	<0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and not on the FY2024 list; up 59 since FY2024.
76	Ebsco Industries Inc. Top NAICS codes 511120 Periodical Publishers	$85,469	<0.1%	Rank history: #67 in FY2021, #78 in FY2022, #83 in FY2023 and #91 in FY2024; up 15 since FY2024.
77	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services	$84,988	<0.1%	Rank history: #79 in FY2021, #64 in FY2022, #62 in FY2023 and #76 in FY2024; down 1 since FY2024.
78	Government Acquisitions LLC Top NAICS codes 541519 Other Computer Related Services	$74,590	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 79 since FY2024.
79	Zahra Hamidi Top NAICS codes 611630 Language Schools	$71,286	<0.1%	Rank history: #68 in FY2021, #80 in FY2022, #81 in FY2023 and #82 in FY2024; up 3 since FY2024.
80	Oak Overseas Ltd Top NAICS codes 561910 Packaging and Labeling Services	$68,565	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
81	Hawaiian Telcom, Inc. Top NAICS codes 517111 Wired Telecommunications Carriers 517311 Wired Telecommunications Carriers	$65,176	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$62,969	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
83	Minburn Technology Group, LLC Top NAICS codes 511210 Software Publishers	$62,771	<0.1%	Rank history: #69 in FY2021, not on the FY2022 list, #65 in FY2023 and #87 in FY2024; up 4 since FY2024.
84	Accessagility LLC Top NAICS codes 541519 Other Computer Related Services	$59,275	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 30 since FY2024.
85	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$58,902	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 27 since FY2024.
86	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$57,004	<0.1%	Rank history: #84 in FY2021, #88 in FY2022 and not on the FY2023–FY2024 lists; up 82 since FY2024.
87	Vladimir Mehling Top NAICS codes 611630 Language Schools	$56,000	<0.1%	Rank history: #80 in FY2021, #93 in FY2022, #97 in FY2023 and #95 in FY2024; up 8 since FY2024.
88	Alaska Communications Internet, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$54,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	Cycle & Carriage Industries Pte. Limited Top NAICS codes 336110 Automobile and Light Duty Motor Vehicle Manufacturing	$53,402	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
90	Smart Communications, Inc. Top NAICS codes 517112 Wireless Telecommunications Carriers (except Satellite) 334290 Other Communications Equipment Manufacturing	$53,198	<0.1%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2024; up 3 since FY2024.
91	United Translation Services LLC Top NAICS codes 541930 Translation and Interpretation Services	$51,770	<0.1%	Rank history: not on the FY2021 list, #59 in FY2022, #50 in FY2023 and #60 in FY2024; down 31 since FY2024.
92	Mice-Mobility GMBH Top NAICS codes 485310 Taxi and Ridesharing Services	$47,210	<0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and not on the FY2024 list; up 41 since FY2024.
93	Ashford TRS Crystal City LLC Top NAICS codes 721110 Hotels (except Casino Hotels) and Motels	$45,659	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
94	Language On Demand, Inc. Top NAICS codes 611630 Language Schools	$43,848	<0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and #84 in FY2024; down 10 since FY2024.
95	US Fitness Holdings LLC Top NAICS codes 713940 Fitness and Recreational Sports Centers	$42,966	<0.1%	Rank history: not on the FY2021 list, #79 in FY2022 and not on the FY2023–FY2024 lists; up 20 since FY2024.
96	Mccolm & Company LLC Top NAICS codes 611519 Other Technical and Trade Schools	$42,521	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	American Council On Education Top NAICS codes 813910 Business Associations	$42,100	<0.1%	Rank history: #92 in FY2021, #91 in FY2022 and not on the FY2023–FY2024 lists; up 16 since FY2024.
98	At&T Inc. Through Att Mobility LLC Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite) 517112 Wireless Telecommunications Carriers (except Satellite)	$41,508	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 61 since FY2024.
99	Oclc, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$39,742	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	The Designpond Top NAICS codes 541430 Graphic Design Services	$33,640	<0.1%	Rank history: not on the FY2021–FY2024 lists; 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 $289 million 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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