Top 100 Defense Human Resources Activity Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	HP Enterprise Services LLC 2 awardees, including Peraton Enterprise Solutions LLC and Peraton Inc. Top NAICS codes 541512 Computer Systems Design Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541519 Other Computer Related Services	$101,709,056	14.5%	Rank history: #1 in FY2022, #1 in FY2023, #9 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
2	Deloitte LLP Through Deloitte Consulting LLP Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$48,954,389	7.0%	Rank history: #28 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
3	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$45,399,941	6.5%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
4	The Interpublic Group of Companies Inc Through Mullenlowe US Inc. Top NAICS codes 541810 Advertising Agencies	$42,820,052	6.1%	Rank history: #3 in FY2022, #6 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
5	Perspecta Inc. Through Peraton Enterprise Solutions LLC Top NAICS codes 541512 Computer Systems Design Services	$35,773,494	5.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
6	Institute of International Education Inc. Top NAICS codes 611710 Educational Support Services	$33,050,000	4.7%	Rank history: #6 in FY2022, #3 in FY2023, #5 in FY2024 and #9 in FY2025; new, not ranked in FY2020.
7	Leidos Holdings, Inc. 3 awardees, including Leidos, Inc. and QTC Medical Services Inc. Top NAICS codes 541519 Other Computer Related Services 621498 All Other Outpatient Care Centers	$31,615,360	4.5%	Rank history: #4 in FY2022, #4 in FY2023, #13 in FY2024 and #6 in FY2025; up 8 since FY2020.
8	Global Connections To Employment, Inc. Top NAICS codes 541512 Computer Systems Design Services	$28,001,326	4.0%	Rank history: #22 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
9	Fors Marsh Group LLC Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$21,589,611	3.1%	Rank history: #9 in FY2022, #9 in FY2023, #8 in FY2024 and #8 in FY2025; unchanged since FY2020.
10	Inspiritec Inc. Top NAICS codes 561422 Telemarketing Bureaus and Other Contact Centers	$18,507,382	2.6%	Rank history: #11 in FY2022, #8 in FY2023, #1 in FY2024 and not on the FY2025 list; down 4 since FY2020.
11	Human Resources Research Organization (Humrro) Top NAICS codes 611710 Educational Support Services	$16,869,449	2.4%	Rank history: #5 in FY2022, #5 in FY2023, #6 in FY2024 and #5 in FY2025; unchanged since FY2020.
12	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541330 Engineering Services 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$16,702,491	2.4%	Rank history: #8 in FY2022, #10 in FY2023, #7 in FY2024 and #4 in FY2025; down 5 since FY2020.
13	Mythics, LLC 2 awardees, including Emergent, LLC Top NAICS codes 334111 Electronic Computer Manufacturing 511210 Software Publishers	$15,961,916	2.3%	Rank history: #12 in FY2022, #12 in FY2023, #15 in FY2024 and not on the FY2025 list; down 1 since FY2020.
14	Clearavenue LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$13,576,159	1.9%	Rank history: #16 in FY2022, #27 in FY2023, #40 in FY2024 and #16 in FY2025; down 1 since FY2020.
15	Deloitte Consulting LLP Top NAICS codes 541330 Engineering Services	$13,206,421	1.9%	Rank history: #2 in FY2022, #2 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
16	Arctic Slope Regional Corporation Through Netcentric Technology, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$12,417,550	1.8%	Rank history: #14 in FY2022, #19 in FY2023, #10 in FY2024 and #14 in FY2025; new, not ranked in FY2020.
17	Rei Systems, Inc. Top NAICS codes 541512 Computer Systems Design Services	$12,297,173	1.7%	Rank history: #10 in FY2022, not on the FY2023 list, #14 in FY2024 and #10 in FY2025; new, not ranked in FY2020.
18	Kearney & Company, P.C. Top NAICS codes 541211 Offices of Certified Public Accountants	$10,465,983	1.5%	Rank history: #13 in FY2022, #14 in FY2023, #16 in FY2024 and not on the FY2025 list; down 4 since FY2020.
19	CACI International Inc. Through Caci Enterprise Solutions, LLC Top NAICS codes 541512 Computer Systems Design Services	$7,733,115	1.1%	Rank history: #17 in FY2022, #17 in FY2023, #20 in FY2024 and not on the FY2025 list; down 3 since FY2020.
20	Xtec, Incorporated Top NAICS codes 541519 Other Computer Related Services	$6,861,859	1.0%	Rank history: #7 in FY2022, #7 in FY2023, #18 in FY2024 and #7 in FY2025; new, not ranked in FY2020.
21	Data Recognition Corporation Top NAICS codes 541910 Marketing Research and Public Opinion Polling	$6,068,858	0.9%	Rank history: #25 in FY2022, #20 in FY2023, #41 in FY2024 and #22 in FY2025; down 1 since FY2020.
22	A-Team Solutions LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$5,955,984	0.8%	Rank history: #21 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
23	SAP America Inc Through Concur Technologies, Inc. Top NAICS codes 511210 Software Publishers	$5,547,348	0.8%	Rank history: #20 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
24	American Council On Education Top NAICS codes 611710 Educational Support Services	$5,139,787	0.7%	Rank history: #32 in FY2022, #25 in FY2023, #30 in FY2024 and #30 in FY2025; down 5 since FY2020.
25	Weris, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,837,080	0.7%	Rank history: #26 in FY2022, #22 in FY2023, #68 in FY2024 and not on the FY2025 list; down 3 since FY2020.
26	Rape, Abuse and Incest National Network Rainn Top NAICS codes 624190 Other Individual and Family Services	$4,569,187	0.6%	Rank history: #15 in FY2022, #15 in FY2023, #17 in FY2024 and #13 in FY2025; down 3 since FY2020.
27	Accenture Federal Services LLC 2 awardees, including ASM Research, LLC Top NAICS codes 541512 Computer Systems Design Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$4,547,303	0.6%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
28	Magellan Health, Inc. 2 awardees, including Magellan Healthcare Inc. and Magellan Federal, Inc. Top NAICS codes 624190 Other Individual and Family Services 541611 Administrative Management and General Management Consulting Services	$3,816,513	0.5%	Rank history: not on the FY2022–FY2023 lists, #43 in FY2024 and not on the FY2025 list; up 49 since FY2020.
29	National Opinion Research Center Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$3,642,959	0.5%	Rank history: #23 in FY2022, #21 in FY2023, #27 in FY2024 and #24 in FY2025; up 2 since FY2020.
30	On Assignment, Inc. Through Indrasoft Inc. Top NAICS codes 541519 Other Computer Related Services	$3,332,050	0.5%	Rank history: #53 in FY2022, #16 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
31	Aegis Defense Services LLC Through Crisis24 Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$3,195,376	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
32	Clason Point Partners Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,119,320	0.4%	Rank history: #33 in FY2022, #30 in FY2023, #33 in FY2024 and #39 in FY2025; up 12 since FY2020.
33	Kaimetrix L.L.C. Top NAICS codes 541511 Custom Computer Programming Services	$3,111,215	0.4%	Rank history: #35 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
34	Vistra Communications, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541613 Marketing Consulting Services	$2,974,027	0.4%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
35	College Entrance Examination Board Top NAICS codes 611710 Educational Support Services	$2,839,394	0.4%	Rank history: #49 in FY2022, #43 in FY2023, #60 in FY2024 and #43 in FY2025; down 8 since FY2020.
36	Goldbelt, Incorporated Through Goldbelt Glacier Health Services, LLC Top NAICS codes 541511 Custom Computer Programming Services	$2,714,543	0.4%	Rank history: #37 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
37	Chirality Capital Consulting, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541618 Other Management Consulting Services	$2,616,625	0.4%	Rank history: #27 in FY2022, #32 in FY2023, #31 in FY2024 and not on the FY2025 list; down 5 since FY2020.
38	Unissant Inc. Top NAICS codes 541512 Computer Systems Design Services	$2,594,107	0.4%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
39	Nelnet Servicing LLC Through Peterson's, LLC Top NAICS codes 611699 All Other Miscellaneous Schools and Instruction 519190 All Other Information Services	$2,534,295	0.4%	Rank history: #41 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
40	SRA International Inc. Through General Dynamics Information Technology, Inc. Top NAICS codes 541512 Computer Systems Design Services	$2,509,638	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Business Technology Career Opportunities, Inc. Top NAICS codes 561439 Other Business Service Centers (including Copy Shops)	$2,500,000	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
42	Cherokee Nation Through Cherokee Federal Solutions, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,466,576	0.4%	Rank history: #39 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
43	Index Systems Inc. Top NAICS codes 541219 Other Accounting Services	$2,088,792	0.3%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
44	Exponent Inc. Top NAICS codes 541330 Engineering Services	$2,045,390	0.3%	Rank history: #42 in FY2022, #66 in FY2023, #35 in FY2024 and #38 in FY2025; up 3 since FY2020.
45	Xicon Solutions, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,015,287	0.3%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
46	Center for Applied Linguistics Top NAICS codes 611430 Professional and Management Development Training	$1,999,999	0.3%	Rank history: #46 in FY2022, #48 in FY2023, #55 in FY2024 and #51 in FY2025; down 5 since FY2020.
47	Exhibit Arts. LLC Top NAICS codes 541890 Other Services Related to Advertising	$1,982,481	0.3%	Rank history: #44 in FY2022, #40 in FY2023, #50 in FY2024 and #41 in FY2025; down 4 since FY2020.
48	Applied Development, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,948,564	0.3%	Rank history: #45 in FY2022, #38 in FY2023, #47 in FY2024 and #48 in FY2025; up 14 since FY2020.
49	Prometric LLC Top NAICS codes 611710 Educational Support Services	$1,776,417	0.3%	Rank history: not on the FY2022 list, #92 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
50	Forward Solutions LLC Top NAICS codes 541612 Human Resources Consulting Services 541720 Research and Development in the Social Sciences and Humanities 541611 Administrative Management and General Management Consulting Services	$1,717,337	0.2%	Rank history: #58 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; up 63 since FY2020.
51	Chugach Technical Solutions LLC Top NAICS codes 541511 Custom Computer Programming Services	$1,678,214	0.2%	Rank history: #59 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
52	Robert D. Niehaus, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,646,275	0.2%	Rank history: #56 in FY2022, #51 in FY2023, #66 in FY2024 and #44 in FY2025; down 2 since FY2020.
53	Advanced Technology Systems Inc. Through Salient Crgt, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,583,233	0.2%	Rank history: not on the FY2022 list, #75 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
54	Calibre Systems Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,567,319	0.2%	Rank history: #31 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; down 29 since FY2020.
55	TFC Consulting Inc. Top NAICS codes 541219 Other Accounting Services	$1,532,359	0.2%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
56	Ishpi Information Technologies Inc. Top NAICS codes 541519 Other Computer Related Services	$1,482,241	0.2%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
57	Innovasystems International LLC Top NAICS codes 541511 Custom Computer Programming Services	$1,457,972	0.2%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
58	CHS Middle East LLC Through Acuity-Chs, LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists)	$1,454,607	0.2%	Rank history: not on the FY2022–FY2023 lists, #75 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
59	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,447,306	0.2%	Rank history: #24 in FY2022, #24 in FY2023, #22 in FY2024 and #23 in FY2025; down 23 since FY2020.
60	Alliant Information Technologies, LLC Top NAICS codes 541512 Computer Systems Design Services	$1,440,243	0.2%	Rank history: not on the FY2022–FY2025 lists; down 43 since FY2020.
61	Marketing for Change Co. Top NAICS codes 541613 Marketing Consulting Services	$1,427,707	0.2%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
62	3T-Innovations, LLC Top NAICS codes 541512 Computer Systems Design Services	$1,407,476	0.2%	Rank history: #54 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; up 59 since FY2020.
63	ITC Federal, LLC Top NAICS codes 541512 Computer Systems Design Services	$1,385,028	0.2%	Rank history: #52 in FY2022, #49 in FY2023, #64 in FY2024 and not on the FY2025 list; down 2 since FY2020.
64	Yak-Tat Kwaan Incorporated Through Tecport Solutions Inc. Top NAICS codes 541512 Computer Systems Design Services	$1,372,897	0.2%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
65	Credence Management Solutions Limited Liability Company Top NAICS codes 541330 Engineering Services	$1,311,041	0.2%	Rank history: #50 in FY2022 and not on the FY2023–FY2025 lists; down 20 since FY2020.
66	Insight Public Sector Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$1,285,432	0.2%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
67	The Bowen Consulting Group. Inc. Top NAICS codes 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$1,279,224	0.2%	Rank history: #64 in FY2022, #59 in FY2023, #69 in FY2024 and #87 in FY2025; up 7 since FY2020.
68	Archimedes Global, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,177,831	0.2%	Rank history: #62 in FY2022, #57 in FY2023, #91 in FY2024 and not on the FY2025 list; down 5 since FY2020.
69	Agile Defense, LLC Top NAICS codes 541512 Computer Systems Design Services	$1,174,162	0.2%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; down 32 since FY2020.
70	R3 Government Solutions, LLC Top NAICS codes 541612 Human Resources Consulting Services	$960,461	0.1%	Rank history: #69 in FY2022, #68 in FY2023, #77 in FY2024 and not on the FY2025 list; down 2 since FY2020.
71	Eminent It LLC Top NAICS codes 541511 Custom Computer Programming Services	$835,017	0.1%	Rank history: #71 in FY2022, #71 in FY2023, #83 in FY2024 and #68 in FY2025; down 7 since FY2020.
72	Northrop Grumman Systems Corporation Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$775,756	0.1%	Rank history: not on the FY2022–FY2025 lists; down 67 since FY2020.
73	National Organization for Victim Assistance, Inc. Top NAICS codes 611430 Professional and Management Development Training	$768,000	0.1%	Rank history: #67 in FY2022, #64 in FY2023, #72 in FY2024 and #65 in FY2025; unchanged since FY2020.
74	Sterling Computers Corporation Top NAICS codes 541519 Other Computer Related Services	$756,860	0.1%	Rank history: #79 in FY2022, #55 in FY2023, #63 in FY2024 and #89 in FY2025; up 106 since FY2020.
75	Technuf, LLC Top NAICS codes 541511 Custom Computer Programming Services	$721,871	0.1%	Rank history: #76 in FY2022, #74 in FY2023, #79 in FY2024 and not on the FY2025 list; unchanged since FY2020.
76	Immersion Consulting LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$710,626	0.1%	Rank history: #77 in FY2022, #76 in FY2023, #86 in FY2024 and #75 in FY2025; new, not ranked in FY2020.
77	Delany, Siegel, Zorn & Associates, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$690,430	0.1%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
78	Human Resources Technologies, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$668,484	0.1%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; down 26 since FY2020.
79	Intellect Solutions, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$666,034	0.1%	Rank history: #84 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
80	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$648,000	0.1%	Rank history: #68 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; down 14 since FY2020.
81	Millennium Health & Fitness, Inc. Top NAICS codes 561990 All Other Support Services	$646,225	0.1%	Rank history: not on the FY2022–FY2024 lists and #49 in FY2025; new, not ranked in FY2020.
82	Hope Services Top NAICS codes 561720 Janitorial Services	$640,288	0.1%	Rank history: #80 in FY2022, #78 in FY2023, #82 in FY2024 and #67 in FY2025; new, not ranked in FY2020.
83	Arttra Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$627,510	0.1%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
84	AE Strategies LLC Top NAICS codes 541612 Human Resources Consulting Services	$626,104	0.1%	Rank history: #47 in FY2022, #47 in FY2023, #44 in FY2024 and not on the FY2025 list; down 15 since FY2020.
85	Afognak Native Corporation 2 awardees, including "Alutiiq Logistics & Maintenance Services, Llc" and Alutiiq Commercial Enterprises LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$619,626	0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
86	Dsfederal, Inc. Top NAICS codes 541512 Computer Systems Design Services	$567,538	0.1%	Rank history: #87 in FY2022, #84 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
87	Advanced Onion Inc. Top NAICS codes 541512 Computer Systems Design Services	$563,946	0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
88	Eduworks Corporation Top NAICS codes 541519 Other Computer Related Services	$563,692	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	PCI Productions LLC Top NAICS codes 541430 Graphic Design Services	$551,041	0.1%	Rank history: #78 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
90	Assyst Inc. Top NAICS codes 541519 Other Computer Related Services	$528,509	0.1%	Rank history: #81 in FY2022, #79 in FY2023, #87 in FY2024 and #80 in FY2025; up 4 since FY2020.
91	Westwind Computer Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$502,761	0.1%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; down 15 since FY2020.
92	Acuity-Chs, LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists)	$500,000	0.1%	Rank history: not on the FY2022–FY2023 lists, #45 in FY2024 and #28 in FY2025; new, not ranked in FY2020.
93	Catmedia Inc. Top NAICS codes 541820 Public Relations Agencies 541613 Marketing Consulting Services	$472,685	0.1%	Rank history: #96 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
94	The Masy Group LLC Top NAICS codes 541519 Other Computer Related Services	$428,619	0.1%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
95	Transtecs Corporation Top NAICS codes 541519 Other Computer Related Services	$397,007	0.1%	Rank history: #95 in FY2022, #90 in FY2023, not on the FY2024 list and #54 in FY2025; up 2 since FY2020.
96	Decisionpoint Corporation Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$342,396	<0.1%	Rank history: not on the FY2022 list, #99 in FY2023 and not on the FY2024–FY2025 lists; up 22 since FY2020.
97	Safety Research Corporation of America, L.L.C. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$327,131	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
98	The Conference Board, Inc. Top NAICS codes 813920 Professional Organizations	$302,014	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
99	Management Analysis Technologies (Mat), Incorporated Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$296,314	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
100	Arrow Electronics, Inc. 2 awardees, including Immixtechnology Inc. and EC America, Inc. Top NAICS codes 541519 Other Computer Related Services 443120 Computer and Software Stores	$287,639	<0.1%	Rank history: #82 in FY2022, #81 in FY2023, #88 in FY2024 and #85 in FY2025; up 10 since FY2020.

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 $703 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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