Top 100 Defense Health Agency Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Tcfii Valor Buyer LLC Through Humana Government Business Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$7,039,551,930	39.9%	Rank history: #1 in FY2022, #1 in FY2023, #2 in FY2024 and not on the FY2025 list; unchanged since FY2020.
2	Centene Corporation Through Health Net Federal Services, LLC Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$3,214,304,715	18.2%	Rank history: #2 in FY2022, #2 in FY2023, #4 in FY2024 and not on the FY2025 list; unchanged since FY2020.
3	Accredo Health Group Inc. Through Express Scripts Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$742,072,756	4.2%	Rank history: #3 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
4	Leidos Holdings, Inc. 7 awardees, including Leidos, Inc. and QTC Medical Services Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 621112 Offices of Physicians, Mental Health Specialists	$565,605,285	3.2%	Rank history: #4 in FY2022, #4 in FY2023, #5 in FY2024 and #7 in FY2025; unchanged since FY2020.
5	Highmark Inc. Through United Concordia Companies, Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$436,535,766	2.5%	Rank history: #6 in FY2022, #7 in FY2023, #20 in FY2024 and not on the FY2025 list; up 1 since FY2020.
6	The Johns Hopkins Health System Corporation Through The Johns Hopkins Medical Services Corporation Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$392,314,944	2.2%	Rank history: #7 in FY2022, #5 in FY2023, #10 in FY2024 and not on the FY2025 list; down 1 since FY2020.
7	Martins Point Health Care Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$392,296,666	2.2%	Rank history: #8 in FY2022, #6 in FY2023, #7 in FY2024 and #6 in FY2025; unchanged since FY2020.
8	UnitedHealth Group Incorporated 3 awardees, including Optumserve Health Services, Inc., Optumhealth Care Solutions, LLC and Optum360 LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists) 541990 All Other Professional, Scientific, and Technical Services 541519 Other Computer Related Services	$187,510,995	1.1%	Rank history: #9 in FY2022, #17 in FY2023, #38 in FY2024 and #34 in FY2025; up 3 since FY2020.
9	Pacmed Clinics Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$172,063,913	1.0%	Rank history: #11 in FY2022, #11 in FY2023, #13 in FY2024 and #11 in FY2025; down 1 since FY2020.
10	Brighton Marine, Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$156,107,654	0.9%	Rank history: #12 in FY2022, #12 in FY2023, #15 in FY2024 and #13 in FY2025; down 1 since FY2020.
11	Christus Health Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$135,751,554	0.8%	Rank history: #15 in FY2022, #14 in FY2023, #16 in FY2024 and #14 in FY2025; down 1 since FY2020.
12	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541611 Administrative Management and General Management Consulting Services	$133,031,850	0.8%	Rank history: #10 in FY2022, #74 in FY2023, #29 in FY2024 and #31 in FY2025; up 1 since FY2020.
13	International SOS Government Services Inc. 3 awardees Top NAICS codes 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds 524114 Direct Health and Medical Insurance Carriers 624230 Emergency and Other Relief Services	$123,361,297	0.7%	Rank history: #16 in FY2022, #13 in FY2023, #14 in FY2024 and #12 in FY2025; up 1 since FY2020.
14	Svcmc, Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$114,092,639	0.6%	Rank history: #17 in FY2022, #15 in FY2023, #18 in FY2024 and #15 in FY2025; down 2 since FY2020.
15	Humana Government Business Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$100,328,573	0.6%	Rank history: not on the FY2022–FY2023 lists, #1 in FY2024 and #1 in FY2025; new, not ranked in FY2020.
16	Deloitte LLP 2 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services 541330 Engineering Services	$86,501,488	0.5%	Rank history: #19 in FY2022, #26 in FY2023, #25 in FY2024 and #27 in FY2025; up 29 since FY2020.
17	Luke & Associates, Inc. Top NAICS codes 622110 General Medical and Surgical Hospitals	$83,191,471	0.5%	Rank history: #20 in FY2022, #22 in FY2023, #31 in FY2024 and #37 in FY2025; new, not ranked in FY2020.
18	Wisconsin Physicians Service Insurance Corp. Top NAICS codes 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds	$72,167,837	0.4%	Rank history: #23 in FY2022, #32 in FY2023, #36 in FY2024 and #44 in FY2025; down 3 since FY2020.
19	Seneca Global Services LLC Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services 541612 Human Resources Consulting Services	$66,994,669	0.4%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; up 20 since FY2020.
20	The Arora Group, Inc. Top NAICS codes 622110 General Medical and Surgical Hospitals	$62,747,272	0.4%	Rank history: #22 in FY2022, #28 in FY2023, #41 in FY2024 and #70 in FY2025; up 94 since FY2020.
21	CACI International Inc. 3 awardees, including Caci Nss, LLC and Caci, Inc. - Federal Top NAICS codes 541519 Other Computer Related Services 541330 Engineering Services	$59,522,216	0.3%	Rank history: #26 in FY2022, #27 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
22	Distinctive Health Spectrum Care JV LLC Top NAICS codes 622110 General Medical and Surgical Hospitals	$59,405,302	0.3%	Rank history: #31 in FY2022, #30 in FY2023, #57 in FY2024 and not on the FY2025 list; up 81 since FY2020.
23	The Johns Hopkins Medical Services Corporation Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$55,643,234	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	Provizor Federal Inc. Top NAICS codes 622110 General Medical and Surgical Hospitals	$55,555,257	0.3%	Rank history: #37 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; up 54 since FY2020.
25	Clinicomp International Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$52,228,187	0.3%	Rank history: #27 in FY2022, #43 in FY2023, #63 in FY2024 and not on the FY2025 list; down 4 since FY2020.
26	Mantech International Corporation Through Mantech Advanced Systems International, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$49,935,858	0.3%	Rank history: not on the FY2022 list, #47 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
27	Team Health Inc. Through Spectrum Healthcare Resources, Inc. Top NAICS codes 621498 All Other Outpatient Care Centers	$48,848,355	0.3%	Rank history: #32 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
28	American Systems Corporation Top NAICS codes 541512 Computer Systems Design Services 541513 Computer Facilities Management Services 541519 Other Computer Related Services	$48,046,635	0.3%	Rank history: #33 in FY2022, #34 in FY2023, #71 in FY2024 and #72 in FY2025; down 10 since FY2020.
29	Sekon Enterprise, LLC Top NAICS codes 541512 Computer Systems Design Services	$47,293,769	0.3%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
30	Minburn Technology Group, LLC Top NAICS codes 541519 Other Computer Related Services	$46,992,312	0.3%	Rank history: not on the FY2022–FY2025 lists; up 137 since FY2020.
31	Ciqima Federal Services LLC Top NAICS codes 611430 Professional and Management Development Training	$44,795,857	0.3%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
32	Potawatomi Business Development Corp 2 awardees, including Advancia Technologies, LLC and Advancia Aeronautics, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 622110 General Medical and Surgical Hospitals	$44,320,215	0.3%	Rank history: #35 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
33	J & J Maintenance Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction 561210 Facilities Support Services	$43,292,828	0.2%	Rank history: #24 in FY2022, #33 in FY2023, #34 in FY2024 and #19 in FY2025; up 60 since FY2020.
34	Cherokee Nation Operational Solutions, L.L.C. Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services 541513 Computer Facilities Management Services	$42,945,683	0.2%	Rank history: #14 in FY2022, #49 in FY2023, #95 in FY2024 and not on the FY2025 list; up 13 since FY2020.
35	General Dynamics Corporation 3 awardees, including General Dynamics Information Technology, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541519 Other Computer Related Services 541512 Computer Systems Design Services	$42,771,347	0.2%	Rank history: #29 in FY2022, #19 in FY2023, #27 in FY2024 and #30 in FY2025; down 19 since FY2020.
36	Laboratory Corporation of America Holdings Through Laboratory Corporation of America Top NAICS codes 621511 Medical Laboratories	$33,050,804	0.2%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; up 379 since FY2020.
37	Cherokee Nation 6 awardees, including Cherokee Nation Strategic Programs, L.L.C. and Cherokee Federal Solutions, L.L.C. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services 519120 Libraries and Archives	$32,347,088	0.2%	Rank history: #51 in FY2022, #99 in FY2023, not on the FY2024 list and #25 in FY2025; down 14 since FY2020.
38	SBD Alliant, LLC Top NAICS codes 541512 Computer Systems Design Services	$28,847,472	0.2%	Rank history: #76 in FY2022, #98 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2020.
39	Thundercat Technology, LLC Top NAICS codes 541519 Other Computer Related Services 621111 Offices of Physicians (except Mental Health Specialists)	$28,650,358	0.2%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; up 32 since FY2020.
40	Intellidyne, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$28,626,273	0.2%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
41	Donald L. Mooney Enterprises, LLC Top NAICS codes 622110 General Medical and Surgical Hospitals	$28,267,691	0.2%	Rank history: #39 in FY2022, #29 in FY2023, #35 in FY2024 and #92 in FY2025; up 135 since FY2020.
42	Vista Defense Technologies, LLC 2 awardees Top NAICS codes 541513 Computer Facilities Management Services 541512 Computer Systems Design Services 541519 Other Computer Related Services	$28,066,988	0.2%	Rank history: #46 in FY2022, #82 in FY2023, #75 in FY2024 and not on the FY2025 list; up 33 since FY2020.
43	HP Enterprise Services LLC 4 awardees, including Peraton Enterprise Solutions LLC, Peraton Inc. and Onsolve LLC Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541519 Other Computer Related Services	$27,609,705	0.2%	Rank history: #21 in FY2022, #20 in FY2023, #68 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
44	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing 511210 Software Publishers	$27,440,433	0.2%	Rank history: #72 in FY2022, #84 in FY2023, #81 in FY2024 and not on the FY2025 list; up 16 since FY2020.
45	Dell Federal Systems L.P. 3 awardees, including Dell Marketing L.P. and EMC Corporation Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers 334111 Electronic Computer Manufacturing	$26,481,045	0.2%	Rank history: #43 in FY2022, #18 in FY2023, #96 in FY2024 and not on the FY2025 list; down 15 since FY2020.
46	The Mitre Corporation Top NAICS codes 541618 Other Management Consulting Services 541519 Other Computer Related Services	$26,191,123	0.1%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
47	Matrix Providers Inc. Top NAICS codes 622110 General Medical and Surgical Hospitals	$24,939,139	0.1%	Rank history: #38 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
48	Perspecta Inc. Through Peraton Enterprise Solutions LLC Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$23,889,936	0.1%	Rank history: not on the FY2022–FY2025 lists; down 26 since FY2020.
49	Emergent, LLC Top NAICS codes 541519 Other Computer Related Services	$23,546,552	0.1%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
50	Arctic Slope Regional Corporation 5 awardees, including Asrc Federal Data Network Technologies, LLC, Asrc Federal Cyber, LLC and Arctic Slope Technical Services, Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$23,471,863	0.1%	Rank history: not on the FY2022 list, #97 in FY2023, not on the FY2024 list and #77 in FY2025; up 30 since FY2020.
51	Frontier Technology Inc. Top NAICS codes 541618 Other Management Consulting Services	$23,261,908	0.1%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
52	Planned Systems International Inc. 2 awardees, including Quarterline Consulting Services, LLC Top NAICS codes 541511 Custom Computer Programming Services 622110 General Medical and Surgical Hospitals	$23,072,880	0.1%	Rank history: #50 in FY2022, #45 in FY2023, #66 in FY2024 and not on the FY2025 list; down 20 since FY2020.
53	Nana Regional Corporation Inc 5 awardees, including Talu LLC, Tuvli LLC and Affigent, LLC Top NAICS codes 337127 Institutional Furniture Manufacturing 541519 Other Computer Related Services 337215 Showcase, Partition, Shelving, and Locker Manufacturing	$22,934,303	0.1%	Rank history: not on the FY2022–FY2025 lists; down 19 since FY2020.
54	D7, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$22,677,668	0.1%	Rank history: #49 in FY2022, #61 in FY2023 and not on the FY2024–FY2025 lists; up 140 since FY2020.
55	Sehlke Consulting LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$21,819,690	0.1%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; up 15 since FY2020.
56	Amyx Inc. Top NAICS codes 541330 Engineering Services	$21,743,610	0.1%	Rank history: #53 in FY2022, #92 in FY2023 and not on the FY2024–FY2025 lists; up 62 since FY2020.
57	Koniag, Inc. 4 awardees, including Eagle Harbor Solutions LLC, Arlluk Technology Solutions LLC and Koniag Services, Inc. Top NAICS codes 561110 Office Administrative Services 541611 Administrative Management and General Management Consulting Services 541511 Custom Computer Programming Services	$21,508,978	0.1%	Rank history: #70 in FY2022, #69 in FY2023, not on the FY2024 list and #68 in FY2025; up 10 since FY2020.
58	Ernst & Young LLP 2 awardees Top NAICS codes 541211 Offices of Certified Public Accountants	$21,311,890	0.1%	Rank history: not on the FY2022–FY2025 lists; down 16 since FY2020.
59	Netimpact Strategies Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services	$20,060,445	0.1%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; down 26 since FY2020.
60	Irving Burton Associates, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$19,907,628	0.1%	Rank history: not on the FY2022–FY2025 lists; down 24 since FY2020.
61	SNA International LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$19,885,348	0.1%	Rank history: #56 in FY2022, #70 in FY2023, #76 in FY2024 and #79 in FY2025; down 13 since FY2020.
62	Kapili Services, LLC Top NAICS codes 611430 Professional and Management Development Training 541519 Other Computer Related Services	$19,078,701	0.1%	Rank history: not on the FY2022–FY2025 lists; down 9 since FY2020.
63	Unissant Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services	$19,050,896	0.1%	Rank history: #58 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
64	EMCOR Group, Inc. Through Emcor Government Services, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$19,009,332	0.1%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
65	Magnificus Corporation Top NAICS codes 622110 General Medical and Surgical Hospitals	$18,279,305	0.1%	Rank history: #62 in FY2022 and not on the FY2023–FY2025 lists; up 55 since FY2020.
66	Axiom Resource Management, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$18,162,642	0.1%	Rank history: #68 in FY2022, not on the FY2023 list, #85 in FY2024 and #93 in FY2025; down 7 since FY2020.
67	The Royster Group, Inc. Top NAICS codes 622110 General Medical and Surgical Hospitals 561320 Temporary Help Services	$18,005,426	0.1%	Rank history: #69 in FY2022, #73 in FY2023, #70 in FY2024 and #75 in FY2025; down 12 since FY2020.
68	Veteran Information Technologies, LLC Top NAICS codes 541519 Other Computer Related Services	$17,644,056	0.1%	Rank history: #30 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; up 120 since FY2020.
69	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$16,632,660	0.1%	Rank history: #54 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
70	Global Connections To Employment, Inc. Top NAICS codes 541519 Other Computer Related Services	$16,018,997	0.1%	Rank history: not on the FY2022–FY2025 lists; down 39 since FY2020.
71	Knowesis, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services 541720 Research and Development in the Social Sciences and Humanities	$15,753,801	0.1%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
72	3M Company 3 awardees, including Solventum Health Information Systems, Inc. Top NAICS codes 541519 Other Computer Related Services 443120 Computer and Software Stores 511210 Software Publishers	$15,688,553	0.1%	Rank history: #65 in FY2022, #88 in FY2023, #84 in FY2024 and #100 in FY2025; down 3 since FY2020.
73	Change Healthcare Technologies LLC 3 awardees, including Change Healthcare Operations, LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$15,069,780	0.1%	Rank history: #92 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
74	Sewp Solutions LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$14,997,030	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Giamed Alliance JV LLC Top NAICS codes 622110 General Medical and Surgical Hospitals	$14,759,252	0.1%	Rank history: not on the FY2022 list, #91 in FY2023, not on the FY2024 list and #99 in FY2025; up 34 since FY2020.
76	Ellumen, Inc. Top NAICS codes 541512 Computer Systems Design Services	$14,719,465	0.1%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; up 32 since FY2020.
77	Magellan Health, Inc. 2 awardees, including Magellan Federal, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$14,633,238	0.1%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; down 27 since FY2020.
78	Lintech Global Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$14,480,587	0.1%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
79	Data Computer Corporation of America Top NAICS codes 541512 Computer Systems Design Services	$13,861,123	0.1%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
80	Medical Center Orthotics and Prosthetics, LLC Top NAICS codes 339113 Surgical Appliance and Supplies Manufacturing	$13,613,443	0.1%	Rank history: not on the FY2022–FY2025 lists; down 22 since FY2020.
81	AMG Healthcare Services Inc. Top NAICS codes 622110 General Medical and Surgical Hospitals	$13,519,527	0.1%	Rank history: #77 in FY2022, #66 in FY2023, not on the FY2024 list and #82 in FY2025; up 248 since FY2020.
82	Goldenwolf - Ewingcole A Joint Venture LLC Top NAICS codes 541330 Engineering Services	$13,492,062	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Accolade Inc. Top NAICS codes 524114 Direct Health and Medical Insurance Carriers	$13,080,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	Federal Staffing Resources, LLC Top NAICS codes 622110 General Medical and Surgical Hospitals	$12,687,641	0.1%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; up 52 since FY2020.
85	Concept Plus, LLC Top NAICS codes 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$12,554,481	0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
86	Sterling Computers Corporation Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing 334614 Software and Other Prerecorded Compact Disc, Tape, and Record Reproducing	$12,461,712	0.1%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
87	Core4Ce LLC Through Spinvi Consulting LLC Top NAICS codes 541330 Engineering Services	$12,229,955	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Roche Holding AG 2 awardees, including Roche Diagnostics Corporation and Kapa Biosystems, Inc. Top NAICS codes 622110 General Medical and Surgical Hospitals 325413 In-Vitro Diagnostic Substance Manufacturing 334516 Analytical Laboratory Instrument Manufacturing	$12,047,123	0.1%	Rank history: #83 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; up 40 since FY2020.
89	Nexsys Electronics, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$11,826,554	0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; down 26 since FY2020.
90	Angel Staffing Incorporated Top NAICS codes 622110 General Medical and Surgical Hospitals	$11,467,747	0.1%	Rank history: not on the FY2022–FY2025 lists; down 53 since FY2020.
91	Professional Contract Services, Inc. Top NAICS codes 561720 Janitorial Services 561730 Landscaping Services	$11,193,333	0.1%	Rank history: #93 in FY2022, #44 in FY2023, #60 in FY2024 and #48 in FY2025; up 14 since FY2020.
92	Tetra Tech, Inc. Through Bluewater Federal Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$11,166,960	0.1%	Rank history: #98 in FY2022, not on the FY2023–FY2024 lists and #87 in FY2025; new, not ranked in FY2020.
93	Tecknomic LLC Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$10,766,616	0.1%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; up 252 since FY2020.
94	Four LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$10,663,819	0.1%	Rank history: not on the FY2022–FY2025 lists; down 32 since FY2020.
95	Niksoft Systems Corp. Top NAICS codes 541519 Other Computer Related Services	$10,641,886	0.1%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
96	KSJ & Associates Inc. Top NAICS codes 541519 Other Computer Related Services	$10,368,809	0.1%	Rank history: not on the FY2022–FY2025 lists; up 47 since FY2020.
97	CDW Corporation Through CDW Government LLC Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing 541512 Computer Systems Design Services	$10,253,342	0.1%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; down 6 since FY2020.
98	Novetta Solutions, LLC Through Accenture Federal Services LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$10,131,495	0.1%	Rank history: not on the FY2022–FY2025 lists; up 236 since FY2020.
99	Federal Resources Corporation Top NAICS codes 541519 Other Computer Related Services	$10,111,115	0.1%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
100	The Chenega Corporation 5 awardees, including Chenega Reliable Services LLC, Chenega Analytic Business Solutions, LLC and Chenega Logistics, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 532420 Office Machinery and Equipment Rental and Leasing 611430 Professional and Management Development Training	$10,020,859	0.1%	Rank history: #66 in FY2022, #90 in FY2023, not on the FY2024 list and #28 in FY2025; up 41 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 $17.6 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 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