Top 100 DOD Uniformed Services University of the Health Sciences Contractors, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Medical Technology Enterprise Consortium	$22,346,498	25.1%	Rank history: #2 in FY2021, #9 in FY2022, #2 in FY2024 and #7 in FY2025; up 8 since FY2022.
2	CDW Corporation Through CDW Government LLC Top NAICS codes 541512 Computer Systems Design Services 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$17,743,887	19.9%	Rank history: #3 in FY2021, #3 in FY2022, #29 in FY2024 and not on the FY2025 list; up 1 since FY2022.
3	D7, LLC Top NAICS codes 541512 Computer Systems Design Services	$5,634,697	6.3%	Rank history: #1 in FY2021, #1 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
4	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. 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	$4,880,929	5.5%	Rank history: not on the FY2021 list, #2 in FY2022, #1 in FY2024 and #3 in FY2025; down 2 since FY2022.
5	Angayut, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$2,748,040	3.1%	Rank history: #5 in FY2021, #6 in FY2022, #11 in FY2024 and #38 in FY2025; up 1 since FY2022.
6	11TH Hour Search LLC Through 11Th Hour Service LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,558,058	2.9%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #8 in FY2025; new.
7	C2 Alaska, LLC Top NAICS codes 561720 Janitorial Services	$2,506,629	2.8%	Rank history: not on the FY2021 list, #5 in FY2022, #6 in FY2024 and not on the FY2025 list; down 2 since FY2022.
8	Rtkl / SSR JV Top NAICS codes 541330 Engineering Services	$2,213,519	2.5%	Rank history: #13 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
9	George Mason University Top NAICS codes 611310 Colleges, Universities, and Professional Schools	$2,180,110	2.5%	Rank history: #6 in FY2021, #7 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
10	Muscogee Staffing Solutions, LLC Top NAICS codes 561210 Facilities Support Services	$2,106,142	2.4%	Rank history: not on the FY2021 list, #8 in FY2022, #8 in FY2024 and #9 in FY2025; down 2 since FY2022.
11	Mantech International Corporation Through Mantech Mgs, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,970,762	2.2%	Rank history: #4 in FY2021, #4 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
12	Mediso Usa, LLC Top NAICS codes 334517 Irradiation Apparatus Manufacturing	$1,317,392	1.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
13	Rogers Lovelock & Fritz Inc. Top NAICS codes 541330 Engineering Services	$1,299,968	1.5%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2024 and not on the FY2025 list; new.
14	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers	$1,246,144	1.4%	Rank history: #24 in FY2021, #21 in FY2022, #9 in FY2024 and #15 in FY2025; up 7 since FY2022.
15	Seventh Sense, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$999,369	1.1%	Rank history: #14 in FY2021, #11 in FY2022, #20 in FY2024 and #95 in FY2025; down 4 since FY2022.
16	CLVG Consulting Inc Top NAICS codes 541512 Computer Systems Design Services	$898,506	1.0%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
17	Wiley Wilson Burns & Mcdonnell Joint Venture Top NAICS codes 541330 Engineering Services	$898,338	1.0%	Rank history: #17 in FY2021, #18 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
18	University System of Maryland 2 awardees, including University of Maryland, College Park and University of Maryland, Baltimore Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541940 Veterinary Services	$893,093	1.0%	Rank history: #15 in FY2021, #12 in FY2022, not on the FY2024 list and #17 in FY2025; down 6 since FY2022.
19	Tidewater, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$749,108	0.8%	Rank history: not on the FY2021 list, #60 in FY2022 and not on the FY2024–FY2025 lists; up 41 since FY2022.
20	Lynch Consultants, LLC Top NAICS codes 541219 Other Accounting Services	$616,486	0.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
21	Reed Elsevier Inc. Through Elsevier B.V. Top NAICS codes 519190 All Other Information Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$504,751	0.6%	Rank history: #19 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
22	The Efficiency Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$442,908	0.5%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2024 and not on the FY2025 list; new.
23	Prenax Inc. Top NAICS codes 513120 Periodical Publishers	$429,473	0.5%	Rank history: #20 in FY2021, #19 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
24	Cherokee Nation System Solutions LLC Top NAICS codes 541512 Computer Systems Design Services	$427,892	0.5%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and not on the FY2025 list; new.
25	King & George, LLC Through Invicta Global, LLC Top NAICS codes 561210 Facilities Support Services	$386,770	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
26	Meta Systems Group Inc. Top NAICS codes 339112 Surgical and Medical Instrument Manufacturing 541511 Custom Computer Programming Services	$350,400	0.4%	Rank history: not on the FY2021 list, #42 in FY2022, #80 in FY2024 and not on the FY2025 list; up 16 since FY2022.
27	Bell Techlogix Inc. Top NAICS codes 513210 Software Publishers	$339,996	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
28	Carl Zeiss X-RAY Microscopy Inc. Through Carl Zeiss Microscopy, LLC Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance 333314 Optical Instrument and Lens Manufacturing	$313,057	0.4%	Rank history: #44 in FY2021, #31 in FY2022, #39 in FY2024 and not on the FY2025 list; up 3 since FY2022.
29	Pritchett Controls, Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$306,272	0.3%	Rank history: #36 in FY2021, #27 in FY2022, #26 in FY2024 and #23 in FY2025; down 2 since FY2022.
30	Accreditation Council for Graduate Medical Education Top NAICS codes 813920 Professional Organizations	$297,711	0.3%	Rank history: #23 in FY2021, #24 in FY2022, #28 in FY2024 and #25 in FY2025; down 6 since FY2022.
31	Gartner, Inc. Top NAICS codes 541519 Other Computer Related Services	$284,616	0.3%	Rank history: #26 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
32	Hyperion Technologies LLC Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$279,894	0.3%	Rank history: not on the FY2021 list, #26 in FY2022, #27 in FY2024 and #47 in FY2025; down 6 since FY2022.
33	Superior Text LLC Top NAICS codes 513130 Book Publishers	$244,741	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
34	Interim Homes Inc Top NAICS codes 531110 Lessors of Residential Buildings and Dwellings	$225,205	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top NAICS codes 813920 Professional Organizations	$225,187	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	Georgetown University (THE) Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$218,915	0.2%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2024 and not on the FY2025 list; new.
37	Thermo Electron Corporation Through Life Technologies Corporation Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance	$203,034	0.2%	Rank history: #29 in FY2021, #52 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
38	John Wiley & Sons Inc. Top NAICS codes 519190 All Other Information Services	$200,715	0.2%	Rank history: #34 in FY2021, #33 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
39	Summer Consultants Inc Top NAICS codes 541330 Engineering Services	$196,493	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
40	Becton, Dickinson and Co Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance	$188,967	0.2%	Rank history: #82 in FY2021, not on the FY2022 list, #48 in FY2024 and #85 in FY2025; returned.
41	At&T Inc. 2 awardees, including At&T Mobility National Accounts LLC and Att Mobility LLC Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite)	$182,708	0.2%	Rank history: #38 in FY2021, #36 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
42	Lyrasis Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$181,690	0.2%	Rank history: #37 in FY2021, #35 in FY2022, #36 in FY2024 and #36 in FY2025; down 7 since FY2022.
43	3T Business Group LLC Top NAICS codes 334516 Analytical Laboratory Instrument Manufacturing	$160,758	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	Elekta AB (PUBL) Through Elekta Inc. Top NAICS codes 334519 Other Measuring and Controlling Device Manufacturing	$150,000	0.2%	Rank history: #40 in FY2021, #38 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
45	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$133,085	0.1%	Rank history: #35 in FY2021, #29 in FY2022, #49 in FY2024 and #32 in FY2025; down 16 since FY2022.
46	International Business Machines Corporation 2 awardees Top NAICS codes 541512 Computer Systems Design Services 511210 Software Publishers	$129,392	0.1%	Rank history: #67 in FY2021, #70 in FY2022, #68 in FY2024 and #81 in FY2025; up 24 since FY2022.
47	Granite Telecommunications, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$127,366	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
48	Affinityce LLC Top NAICS codes 611430 Professional and Management Development Training	$125,801	0.1%	Rank history: not on the FY2021 list, #47 in FY2022, #42 in FY2024 and #64 in FY2025; down 1 since FY2022.
49	Aimcon Design Build, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$122,447	0.1%	Rank history: #11 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
50	Amboss SE Top NAICS codes 611691 Exam Preparation and Tutoring	$113,400	0.1%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2024 and #40 in FY2025; new.
51	Association of American Medical Colleges Top NAICS codes 813920 Professional Organizations	$104,263	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
52	Clarivate Analytics (US) LLC Top NAICS codes 513210 Software Publishers 511210 Software Publishers	$102,951	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 69 since FY2022.
53	Environmental Management Services Inc. Top NAICS codes 562112 Hazardous Waste Collection	$99,525	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2024 and #52 in FY2025; new.
54	Danaher Corporation 2 awardees, including Beckman Coulter, Inc. and Global Life Sciences Solutions USA LLC Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance	$99,343	0.1%	Rank history: #80 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 55 since FY2022.
55	Avant Garde Scientific, Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance	$99,276	0.1%	Rank history: #32 in FY2021, #49 in FY2022, #37 in FY2024 and #27 in FY2025; down 6 since FY2022.
56	Balch & Bingham LLP Top NAICS codes 541110 Offices of Lawyers	$92,500	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
57	On Site Systems Inc. Top NAICS codes 513210 Software Publishers	$91,498	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Echo Healthcare Inc. Top NAICS codes 334310 Audio and Video Equipment Manufacturing	$91,350	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
59	Bioniquest Lab Services, Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance	$87,000	0.1%	Rank history: #48 in FY2021, not on the FY2022 list, #65 in FY2024 and not on the FY2025 list; up 45 since FY2022.
60	Microsoft Corporation Top NAICS codes 513210 Software Publishers	$86,399	0.1%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2024 and #66 in FY2025; new.
61	Adstec Corporation Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance	$82,710	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	Tecniplast Usa, Inc. Top NAICS codes 339113 Surgical Appliance and Supplies Manufacturing	$82,569	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	Wolters Kluwer N.V. Through Uptodate, Inc. Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$77,170	0.1%	Rank history: #42 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
64	Xstrahl, Inc. Top NAICS codes 811210 Electronic and Precision Equipment Repair and Maintenance	$74,195	0.1%	Rank history: #50 in FY2021, not on the FY2022 list, #62 in FY2024 and #76 in FY2025; returned.
65	5D Investment OY Through Gasmet Technologies Inc. Top NAICS codes 334519 Other Measuring and Controlling Device Manufacturing	$72,413	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
66	Cambridge Information Group Inc. Through Ex Libris USA Inc. Top NAICS codes 511210 Software Publishers	$72,175	0.1%	Rank history: #61 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
67	Leidos Holdings, Inc. Through Leidos, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$69,193	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
68	Foss Therapy Services, Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance	$65,518	0.1%	Rank history: #63 in FY2021, #97 in FY2022, #91 in FY2024 and #99 in FY2025; up 29 since FY2022.
69	Key Solutions Inc Top NAICS codes 541512 Computer Systems Design Services	$65,425	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
70	Morgan, Lewis & Bockius LLP Top NAICS codes 611430 Professional and Management Development Training	$63,000	0.1%	Rank history: #56 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
71	Viastar, LLC Top NAICS codes 339113 Surgical Appliance and Supplies Manufacturing	$60,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
72	Mtfa Architecture, Inc. Top NAICS codes 541310 Architectural Services	$58,183	0.1%	Rank history: #59 in FY2021, #15 in FY2022 and not on the FY2024–FY2025 lists; down 57 since FY2022.
73	Presidio Government Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$55,437	0.1%	Rank history: not on the FY2021 list, #69 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
74	Downeast Logistics LLC Top NAICS codes 325612 Polish and Other Sanitation Good Manufacturing	$51,463	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
75	Aquifer Inc. Top NAICS codes 813920 Professional Organizations	$50,875	0.1%	Rank history: #78 in FY2021, #72 in FY2022, #67 in FY2024 and #79 in FY2025; down 3 since FY2022.
76	Adventures By Dawn L.l.c Top NAICS codes 485999 All Other Transit and Ground Passenger Transportation	$50,728	0.1%	Rank history: not on the FY2021 list, #81 in FY2022, #58 in FY2024 and #72 in FY2025; up 5 since FY2022.
77	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$49,607	0.1%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2024 and #58 in FY2025; new.
78	Myjove Corporation Top NAICS codes 513210 Software Publishers	$48,500	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2024 and not on the FY2025 list; new.
79	Price Modern LLC Top NAICS codes 337127 Institutional Furniture Manufacturing	$45,190	0.1%	Rank history: #28 in FY2021, #67 in FY2022, #32 in FY2024 and #31 in FY2025; down 12 since FY2022.
80	TECH Service Solutions LLC Top NAICS codes 334519 Other Measuring and Controlling Device Manufacturing	$44,998	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 33 since FY2022.
81	Caterpillar Inc. Through Carter Machinery Company, Incorporated Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$44,120	<0.1%	Rank history: not on the FY2021 list, #74 in FY2022, #88 in FY2024 and not on the FY2025 list; down 7 since FY2022.
82	Jackson Laboratory Top NAICS codes 112990 All Other Animal Production	$43,064	<0.1%	Rank history: not on the FY2021 list, #40 in FY2022 and not on the FY2024–FY2025 lists; down 42 since FY2022.
83	DAI Scientific Equipment, Inc. Top NAICS codes 334516 Analytical Laboratory Instrument Manufacturing	$40,953	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Executive Information Systems, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$39,876	<0.1%	Rank history: #91 in FY2021, #83 in FY2022, #76 in FY2024 and #84 in FY2025; down 1 since FY2022.
85	Advanced Computer Concepts, Inc. Top NAICS codes 541519 Other Computer Related Services	$39,437	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	Labrepco Inc. Top NAICS codes 333415 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing	$39,325	<0.1%	Rank history: #27 in FY2021, #89 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
87	VRL Maryland LLC Top NAICS codes 541380 Testing Laboratories and Services	$38,728	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #94 in FY2025; new.
88	Next Interactions, Inc. Top NAICS codes 621511 Medical Laboratories	$38,500	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	I. Miller Precision Optical Instruments, Inc. Top NAICS codes 333310 Commercial and Service Industry Machinery Manufacturing	$37,740	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
90	The Strathmore Hall Foundation, Inc. Top NAICS codes 711310 Promoters of Performing Arts, Sports, and Similar Events with Facilities	$35,087	<0.1%	Rank history: not on the FY2021 list, #84 in FY2022, #83 in FY2024 and #91 in FY2025; down 6 since FY2022.
91	On Computer Services, L.L.C. Top NAICS codes 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing	$34,601	<0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2024 and not on the FY2025 list; new.
92	Simulab Corp Top NAICS codes 423490 Other Professional Equipment and Supplies Merchant Wholesalers	$34,336	<0.1%	Rank history: not on the FY2021 list, #58 in FY2022 and not on the FY2024–FY2025 lists; down 34 since FY2022.
93	Ebsco Industries Inc. Top NAICS codes 519190 All Other Information Services	$33,985	<0.1%	Rank history: #97 in FY2021, #87 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
94	Mcgraw Hill LLC Top NAICS codes 513130 Book Publishers 611691 Exam Preparation and Tutoring	$33,106	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Lumivero LLC Top NAICS codes 513210 Software Publishers	$32,997	<0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2024 and #89 in FY2025; new.
96	Sinclair Group, Inc. Through Sinclair Bio Resources, LLC Top NAICS codes 112990 All Other Animal Production	$32,952	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 21 since FY2022.
97	Hydro Service & Supplies Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance	$32,733	<0.1%	Rank history: #88 in FY2021, not on the FY2022 list, not on the FY2024 list and #69 in FY2025; up 52 since FY2022.
98	Anderson Court Reporting, LLC Top NAICS codes 561410 Document Preparation Services	$32,300	<0.1%	Rank history: #93 in FY2021, #88 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
99	Graham Advisory Network Inc Top NAICS codes 513120 Periodical Publishers	$31,459	<0.1%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2024 and #21 in FY2025; new.
100	Verizon Communications Inc. Through Cellco Partnership Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite)	$28,426	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 25 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 $89 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. 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