Top 100 Contractors in PSC R499: Other Professional Services, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Booz Allen Hamilton Holding Corporation 5 awardees, including Booz Allen Hamilton Inc., Liberty It Solutions LLC and Middle Bay Solutions II, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$1,198,437,196	4.9%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #2 in FY2025; up 1 since FY2020.
2	The Boeing Company 9 awardees, including Boeing Sikorsky Aircraft Support, LLC, Jeppesen Foreflight, Inc. and Boeing Intelligence & Analytics, Inc. Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$1,161,064,703	4.8%	Rank history: #2 in FY2022, #2 in FY2023, #2 in FY2024 and #1 in FY2025; down 1 since FY2020.
3	Deloitte LLP 5 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOS (Department of State)	$685,241,291	2.8%	Rank history: #5 in FY2022, #7 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
4	Maximus Inc. 5 awardees, including Maximus Federal Services, Inc., Q2 Administrators, LLC and Maximus Federal Technology Solutions, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) WHS (DOD Washington Headquarters Service)	$636,479,668	2.6%	Rank history: #3 in FY2022, #3 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
5	Accenture Federal Services LLC 4 awardees, including ASM Research, LLC and Avanade Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USDA (Department of Agriculture)	$441,987,758	1.8%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; up 20 since FY2020.
6	General Dynamics Corporation 15 awardees, including General Dynamics Information Technology, Inc., Csra LLC and General Dynamics One Source LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$383,685,969	1.6%	Rank history: #11 in FY2022, #5 in FY2023, #3 in FY2024 and #5 in FY2025; unchanged since FY2020.
7	America's Blood Centers Top agencies HHS (Department of Health and Human Services)	$325,195,248	1.3%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
8	CACI International Inc. 8 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and Caci-Wgi, LLC Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy) USDA (Department of Agriculture)	$317,226,345	1.3%	Rank history: #6 in FY2022, #8 in FY2023, #10 in FY2024 and #9 in FY2025; up 14 since FY2020.
9	Guidehouse Inc. 2 awardees Top agencies SBA (Small Business Administration) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$316,388,081	1.3%	Rank history: #20 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
10	Highlight Technologies, LLC Top agencies SBA (Small Business Administration) USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$301,464,157	1.2%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
11	Science Applications International Corporation 8 awardees, including Forfeiture Support Associates LLC, Engility Services, LLC and Halfaker and Associates, LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) OSD (Office of the Secretary of Defense)	$286,230,716	1.2%	Rank history: #7 in FY2022, #6 in FY2023, #9 in FY2024 and #8 in FY2025; down 7 since FY2020.
12	RTX Corporation 16 awardees, including Raytheon Company, Nightwing Technologies, LLC and Noresco, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) USSOCOM (United States Special Operations Command)	$254,197,595	1.0%	Rank history: #43 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2020.
13	Serco North America (Holdings) Inc 5 awardees, including Serco Inc., Serco-Ips Corporation and Whitney Bradley & Brown, Inc. Top agencies HHS (Department of Health and Human Services) PBGC (Pension Benefit Guaranty Corporation) Navy (Department of the Navy)	$252,256,411	1.0%	Rank history: #9 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
14	Logistics Management Institute 2 awardees, including The Tauri Group, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$243,137,215	1.0%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
15	Jacobs Engineering Group Inc. 14 awardees, including Amentum Technology, Inc., Ch2M Facility Support Services, LLC and The Keyw Corporation Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) DOJ (Department of Justice)	$202,639,473	0.8%	Rank history: #23 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
16	Alion Science and Technology Corporation 2 awardees, including HII Mission Technologies Corp Top agencies USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$192,651,396	0.8%	Rank history: #45 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
17	Parsons Corporation 4 awardees, including Parsons Government Services Inc., Polaris Alpha, LLC and Ptsi Managed Services Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$190,656,052	0.8%	Rank history: #17 in FY2022, #12 in FY2023, #15 in FY2024 and #22 in FY2025; up 9 since FY2020.
18	Amentum Services, Inc. 4 awardees, including URS Federal Services International, Inc. and Dyncorp International LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) Treasury (Department of the Treasury)	$186,971,618	0.8%	Rank history: #24 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2020.
19	Michael Baker International, LLC 2 awardees, including Sallyport Global Holdings Inc. Top agencies USAF (Department of the Air Force) EPA (Environmental Protection Agency) DOS (Department of State)	$184,733,006	0.8%	Rank history: #13 in FY2022, #14 in FY2023, #21 in FY2024 and not on the FY2025 list; down 14 since FY2020.
20	Research Triangle Institute 2 awardees, including International Resources Group Ltd. Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) EPA (Environmental Protection Agency)	$183,424,849	0.8%	Rank history: #28 in FY2022, #26 in FY2023, #18 in FY2024 and #38 in FY2025; down 5 since FY2020.
21	ICF International, Inc. 3 awardees, including ICF Incorporated, L.L.C., ICF Macro Inc. and Incentive Technology Group LLC Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) EPA (Environmental Protection Agency)	$176,414,090	0.7%	Rank history: #22 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
22	H.i.g. Capital Management Inc. 4 awardees, including Iron Bow Technologies, LLC, Empower AI, Inc. and Symplicity Corporation Top agencies VA (Department of Veterans Affairs) OSD (Office of the Secretary of Defense) FCC (Federal Communications Commission)	$174,894,623	0.7%	Rank history: #19 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; up 55 since FY2020.
23	Mantech International Corporation 4 awardees, including Mantech Advanced Systems International, Inc., Mantech SRS Technologies, Inc. and Knowledge Consulting Group Inc. Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$165,854,229	0.7%	Rank history: #8 in FY2022, #50 in FY2023, #87 in FY2024 and not on the FY2025 list; up 5 since FY2020.
24	DAI Global LLC Top agencies USAID (US Agency for International Development)	$163,825,941	0.7%	Rank history: #14 in FY2022, #16 in FY2023, #14 in FY2024 and #32 in FY2025; down 7 since FY2020.
25	Mathematica Inc 2 awardees Top agencies HHS (Department of Health and Human Services) ED (Department of Education) SSA (Social Security Administration)	$151,209,762	0.6%	Rank history: #25 in FY2022, #34 in FY2023 and not on the FY2024–FY2025 lists; down 13 since FY2020.
26	ACE Info Solutions LLC 2 awardees, including Dovel Technologies LLC and Guidehouse Digital LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$147,397,937	0.6%	Rank history: #34 in FY2022, #61 in FY2023 and not on the FY2024–FY2025 lists; up 37 since FY2020.
27	PAE Government Services Inc. 7 awardees, including PAE Professional Services, LLC, Metis Solutions, LLC and PAE National Security Solutions LLC Top agencies DHS (Department of Homeland Security) DOS (Department of State) USSOCOM (United States Special Operations Command)	$146,796,228	0.6%	Rank history: #58 in FY2022 and not on the FY2023–FY2025 lists; up 25 since FY2020.
28	The Boston Consulting Group Inc 2 awardees, including BCG Federal Corp. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$143,490,360	0.6%	Rank history: #39 in FY2022, #11 in FY2023, #27 in FY2024 and not on the FY2025 list; up 9 since FY2020.
29	Kbr, Inc. 7 awardees, including KBR Wyle Services, LLC, Kord Technologies, LLC and Dependable Global Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$141,835,759	0.6%	Rank history: #33 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
30	International Business Machines Corporation 7 awardees Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$138,391,492	0.6%	Rank history: #16 in FY2022, #30 in FY2023, #30 in FY2024 and #26 in FY2025; up 6 since FY2020.
31	Signature Choice, LLC Top agencies VA (Department of Veterans Affairs)	$132,070,820	0.5%	Rank history: #47 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; up 39 since FY2020.
32	Perspecta Inc. 4 awardees, including Peraton Technology Services Inc., Peraton Enterprise Solutions LLC and Peraton Services & Solutions Inc. Top agencies Army (Department of the Army) ED (Department of Education) NSF (National Science Foundation)	$126,987,628	0.5%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
33	Cognosante Holdings, LLC 3 awardees, including Cognosante, LLC, Cognosante MVH LLC and Cognosante Cds, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Army (Department of the Army)	$121,477,892	0.5%	Rank history: #35 in FY2022, #45 in FY2023, #48 in FY2024 and not on the FY2025 list; up 64 since FY2020.
34	The GEO Group, Inc. Top agencies DOJ (Department of Justice)	$118,452,830	0.5%	Rank history: #32 in FY2022, #38 in FY2023, #49 in FY2024 and #41 in FY2025; down 3 since FY2020.
35	Ingenesis Inc. Through Kelly Services, Inc. Top agencies HHS (Department of Health and Human Services)	$116,401,215	0.5%	Rank history: #15 in FY2022, #21 in FY2023, #59 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
36	National Exchange Carrier Association Inc. Through Universal Service Administrative Company Top agencies FCC (Federal Communications Commission)	$114,185,000	0.5%	Rank history: #73 in FY2022, #29 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
37	Advanced Technology Systems Inc. 5 awardees, including Salient Crgt, Inc. and Salient Federal-Sgis Inc. Top agencies USAF (Department of the Air Force) PBGC (Pension Benefit Guaranty Corporation) HHS (Department of Health and Human Services)	$112,566,047	0.5%	Rank history: not on the FY2022 list, #35 in FY2023, #64 in FY2024 and not on the FY2025 list; down 7 since FY2020.
38	UnitedHealth Group Incorporated 6 awardees, including Optumhealth Care Solutions, LLC, The Lewin Group, Inc. and Optumserve Technology Services, Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$110,909,978	0.5%	Rank history: #29 in FY2022, #52 in FY2023, #46 in FY2024 and not on the FY2025 list; down 22 since FY2020.
39	Tetra Tech, Inc. 17 awardees, including Ard, Inc., Management Systems International, Inc. and Advanced Management Technology, Inc. Top agencies USAID (US Agency for International Development) DOT (Department of Transportation) DOS (Department of State)	$110,100,497	0.5%	Rank history: #27 in FY2022, #36 in FY2023, #36 in FY2024 and #45 in FY2025; up 3 since FY2020.
40	Universal Service Administrative Company Top agencies FCC (Federal Communications Commission)	$102,600,000	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$94,695,134	0.4%	Rank history: #40 in FY2022, #27 in FY2023, #24 in FY2024 and #49 in FY2025; down 20 since FY2020.
42	National Opinion Research Center Top agencies HHS (Department of Health and Human Services) EEOC (Equal Employment Opportunity Commission)	$92,694,008	0.4%	Rank history: #44 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
43	Sapient Corporation 3 awardees, including Plowshare Group, Inc., Sapient Government Services, Inc. and Onpoint Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$92,184,789	0.4%	Rank history: #48 in FY2022, #43 in FY2023, #58 in FY2024 and #82 in FY2025; up 4 since FY2020.
44	Ernst & Young LLP 2 awardees Top agencies Army (Department of the Army) DOJ (Department of Justice) OSD (Office of the Secretary of Defense)	$92,023,968	0.4%	Rank history: #37 in FY2022, #23 in FY2023, #23 in FY2024 and #25 in FY2025; down 10 since FY2020.
45	BAE Systems PLC 4 awardees, including BAE Systems Technology Solutions & Services Inc. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$89,869,319	0.4%	Rank history: #61 in FY2022, #70 in FY2023, #100 in FY2024 and not on the FY2025 list; up 19 since FY2020.
46	Lockheed Martin Corporation 5 awardees, including Lockheed Martin Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$85,735,374	0.4%	Rank history: #30 in FY2022, #47 in FY2023, #38 in FY2024 and #42 in FY2025; down 14 since FY2020.
47	ABT Global LLC 2 awardees Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) ED (Department of Education)	$81,642,702	0.3%	Rank history: #51 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
48	Kpmg L.L.P. 2 awardees Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DCSA (Defense Counterintelligence and Security Agency)	$79,728,819	0.3%	Rank history: #31 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
49	Palladium International LLC Top agencies USAID (US Agency for International Development)	$79,608,735	0.3%	Rank history: #41 in FY2022, #59 in FY2023, #90 in FY2024 and not on the FY2025 list; down 14 since FY2020.
50	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$78,561,220	0.3%	Rank history: #56 in FY2022, #54 in FY2023, #57 in FY2024 and #55 in FY2025; up 7 since FY2020.
51	Westat, Inc. Top agencies ED (Department of Education) HHS (Department of Health and Human Services) OPM (Office of Personnel Management)	$77,449,528	0.3%	Rank history: #38 in FY2022, #49 in FY2023, #26 in FY2024 and not on the FY2025 list; down 3 since FY2020.
52	Highpoint Global, LLC Through Highpoint Digital, Inc. Top agencies HHS (Department of Health and Human Services)	$76,833,120	0.3%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
53	Tanaq Support Services, LLC Top agencies HHS (Department of Health and Human Services)	$72,951,007	0.3%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 143 since FY2020.
54	Medical Science & Computing, LLC Top agencies HHS (Department of Health and Human Services)	$72,402,279	0.3%	Rank history: #62 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
55	Asrc Federal Professional Services, LLC Top agencies DCSA (Defense Counterintelligence and Security Agency) Army (Department of the Army)	$72,237,519	0.3%	Rank history: not on the FY2022–FY2025 lists; up 71 since FY2020.
56	Apogee Engineering, LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) DOI (Department of the Interior)	$70,429,039	0.3%	Rank history: #71 in FY2022, not on the FY2023 list, #77 in FY2024 and #47 in FY2025; up 66 since FY2020.
57	American Institutes for Research In the Behavioral Sciences 3 awardees, including Impaq International, LLC and Growth Transitions Inc. Top agencies HHS (Department of Health and Human Services) ED (Department of Education) DOL (Department of Labor)	$68,011,642	0.3%	Rank history: #49 in FY2022, #48 in FY2023, #53 in FY2024 and not on the FY2025 list; up 31 since FY2020.
58	Quality Health Strategies Inc. Through Qlarant Integrity Solutions LLC Top agencies HHS (Department of Health and Human Services)	$67,936,739	0.3%	Rank history: #60 in FY2022, #56 in FY2023, #81 in FY2024 and not on the FY2025 list; up 1 since FY2020.
59	Ba-Zai JV, LLC Top agencies DOJ (Department of Justice)	$66,997,331	0.3%	Rank history: #84 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
60	Calibre Systems Inc. 2 awardees Top agencies Army (Department of the Army) DHRA (Defense Human Resources Activity) USAF (Department of the Air Force)	$66,326,936	0.3%	Rank history: #63 in FY2022, #65 in FY2023, #73 in FY2024 and #72 in FY2025; up 12 since FY2020.
61	HP Enterprise Services LLC 9 awardees, including Peraton Inc., Peraton Government Communications Inc. and Peraton Technology Services Inc. Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services) ED (Department of Education)	$65,476,289	0.3%	Rank history: #10 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; up 165 since FY2020.
62	Leidos Holdings, Inc. 15 awardees, including Leidos, Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$64,951,543	0.3%	Rank history: #54 in FY2022, #20 in FY2023, #13 in FY2024 and #11 in FY2025; down 23 since FY2020.
63	Cherokee Nation 10 awardees, including Cherokee Nation Strategic Programs, L.L.C., Cherokee Federal Solutions, L.L.C. and Cherokee Nation Management & Consulting, L.l.c.. Top agencies DHA (Defense Health Agency) Army (Department of the Army) HHS (Department of Health and Human Services)	$64,382,682	0.3%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; down 13 since FY2020.
64	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$63,083,780	0.3%	Rank history: #46 in FY2022, #39 in FY2023, #47 in FY2024 and #35 in FY2025; up 23 since FY2020.
65	Blue Cross & Blue Shield of South Carolina 2 awardees, including Palmetto Gba, LLC Top agencies HHS (Department of Health and Human Services)	$61,652,657	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Nana Regional Corporation Inc 14 awardees, including Rivertech LLC, Tundra Federal LLC and Cloud Lake Technology LLC Top agencies OPM (Office of Personnel Management) DOS (Department of State) DHS (Department of Homeland Security)	$61,433,559	0.3%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; up 32 since FY2020.
67	The Chenega Corporation 11 awardees, including Chenega Healthcare Services LLC, Chenega Integrated Security Solutions, LLC and Chenega Reliable Services LLC Top agencies SEC (Securities and Exchange Commission) DOJ (Department of Justice) DHA (Defense Health Agency)	$60,323,518	0.2%	Rank history: #69 in FY2022, #58 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
68	TMF Health Quality Institute 2 awardees, including C2C Innovative Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$58,947,759	0.2%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
69	General Dynamics Information Technology, Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DHA (Defense Health Agency)	$58,408,329	0.2%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; down 36 since FY2020.
70	Grant Thornton International Ltd 2 awardees, including Grant Thornton LLP and Grant Thornton Public Sector LLC Top agencies Commerce (Department of Commerce) VA (Department of Veterans Affairs) PBGC (Pension Benefit Guaranty Corporation)	$58,341,402	0.2%	Rank history: #65 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; up 61 since FY2020.
71	The American National Red Cross Top agencies HHS (Department of Health and Human Services)	$54,427,783	0.2%	Rank history: not on the FY2022–FY2025 lists; down 20 since FY2020.
72	Worldwide Language Resources, LLC Top agencies USSOCOM (United States Special Operations Command) Army (Department of the Army)	$54,321,017	0.2%	Rank history: not on the FY2022–FY2025 lists; up 65 since FY2020.
73	L3Harris Technologies, Inc. 5 awardees, including L3Harris Technologies Integrated Systems L.P. and CAE USA Inc. Top agencies USAF (Department of the Air Force)	$53,229,249	0.2%	Rank history: #76 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
74	Inverness Technologies Inc. Top agencies Army (Department of the Army)	$53,082,375	0.2%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 94 since FY2020.
75	Oak Ridge Associated Universities, Incorporated Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) Morris K. Udall Foundation	$51,158,535	0.2%	Rank history: #68 in FY2022, #77 in FY2023, #86 in FY2024 and #84 in FY2025; up 4 since FY2020.
76	Northrop Grumman Corporation 14 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) Treasury (Department of the Treasury)	$50,582,445	0.2%	Rank history: not on the FY2022 list, #24 in FY2023, #74 in FY2024 and not on the FY2025 list; up 79 since FY2020.
77	The Mitre Corporation Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) DHS (Department of Homeland Security)	$49,909,406	0.2%	Rank history: #52 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
78	Hewlett Packard Enterprise Co 2 awardees, including Safeguard Services LLC Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$49,389,549	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Koniag, Inc. 6 awardees, including Tuknik Government Services LLC, Pacarctic, LLC and Koniag Technology Solutions Inc. Top agencies DISA (Defense Information Systems Agency) DOJ (Department of Justice) DOS (Department of State)	$48,062,083	0.2%	Rank history: #55 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
80	Mckinsey & Company, Inc. Through Mckinsey & Company, Inc. Washington D.c. Top agencies Army (Department of the Army) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$47,935,186	0.2%	Rank history: #100 in FY2022 and not on the FY2023–FY2025 lists; up 74 since FY2020.
81	Aptim Federal Services LLC Top agencies DHS (Department of Homeland Security) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$45,280,845	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Ciqima Federal Services LLC Top agencies DHA (Defense Health Agency)	$44,795,857	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
83	Sierra Nevada Company, LLC Top agencies USAF (Department of the Air Force)	$44,720,826	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	WWC Global LLC Top agencies USSOCOM (United States Special Operations Command) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$43,905,999	0.2%	Rank history: #78 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
85	American Institute In Taiwan Top agencies DOS (Department of State) DHS (Department of Homeland Security)	$43,845,677	0.2%	Rank history: #85 in FY2022, #95 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
86	Avantus Federal LLC Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) DOT (Department of Transportation)	$43,177,255	0.2%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
87	Innovative Technology Solutions JV, LLC Top agencies USAF (Department of the Air Force)	$42,432,431	0.2%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
88	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$41,885,088	0.2%	Rank history: #80 in FY2022, not on the FY2023–FY2024 lists and #48 in FY2025; up 37 since FY2020.
89	Huntington Ingalls Industries, Inc. 3 awardees, including Fulcrum It Services, LLC and HII Mission Technologies Corp Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command) ED (Department of Education)	$41,275,995	0.2%	Rank history: #18 in FY2022, #10 in FY2023, #8 in FY2024 and #7 in FY2025; down 20 since FY2020.
90	The Johns Hopkins University 3 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC and Broadway Services, Incorporated Top agencies USSOCOM (United States Special Operations Command) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$40,642,406	0.2%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
91	Goldbelt, Incorporated 8 awardees, including Goldbelt C6, LLC, Goldbelt Glacier Health Services, LLC and Nisga'a Tek, LLC Top agencies HHS (Department of Health and Human Services) DOS (Department of State) Navy (Department of the Navy)	$39,594,988	0.2%	Rank history: #77 in FY2022, #84 in FY2023 and not on the FY2024–FY2025 lists; up 67 since FY2020.
92	On Assignment, Inc. 3 awardees, including ECS Federal, LLC Top agencies DARPA (Defense Advanced Research Projects Agency) DOJ (Department of Justice) Navy (Department of the Navy)	$39,285,576	0.2%	Rank history: not on the FY2022 list, #76 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
93	Gartner, Inc. 3 awardees, including Personnel Decisions Research Institutes, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOE (Department of Energy)	$39,229,481	0.2%	Rank history: #81 in FY2022, #68 in FY2023, #78 in FY2024 and not on the FY2025 list; up 56 since FY2020.
94	Systems Planning and Analysis, Inc. Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$39,059,370	0.2%	Rank history: #83 in FY2022, #86 in FY2023, not on the FY2024 list and #70 in FY2025; up 107 since FY2020.
95	Manufacturing Technical Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$38,853,553	0.2%	Rank history: not on the FY2022–FY2025 lists; down 33 since FY2020.
96	Vion Corporation Top agencies Commerce (Department of Commerce) DOI (Department of the Interior) FCC (Federal Communications Commission)	$38,278,211	0.2%	Rank history: #98 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
97	Summit Technologies, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$37,766,424	0.2%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
98	Planned Systems International Inc. 2 awardees, including Advanced Technologies and Laboratories (Atl) International, Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) Army (Department of the Army)	$37,253,373	0.2%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; up 74 since FY2020.
99	Chickasaw Health Consulting, LLC Top agencies HHS (Department of Health and Human Services)	$36,862,253	0.2%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 330 since FY2020.
100	Broadleaf, Inc. Top agencies Army (Department of the Army) DOL (Department of Labor) DARPA (Defense Advanced Research Projects Agency)	$36,503,722	0.2%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; up 108 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 $24.3 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