Top 100 Contractors in PSC R499: Other Professional Services, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Booz Allen Hamilton Holding Corporation 4 awardees, including Booz Allen Hamilton Inc. Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$1,575,399,954	5.2%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2024 and #2 in FY2025; unchanged since FY2022.
2	The Boeing Company 9 awardees, including Jeppesen Foreflight, Inc. and Boeing Sikorsky Aircraft Support, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$1,349,390,107	4.4%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2024 and #1 in FY2025; unchanged since FY2022.
3	Maximus Inc. 7 awardees, including Maximus Federal Services, Inc., Maximus Federal Technology Solutions, LLC and Q2 Administrators, LLC Top agencies HHS (Department of Health and Human Services) WHS (DOD Washington Headquarters Service) VA (Department of Veterans Affairs)	$886,324,902	2.9%	Rank history: #4 in FY2021, #3 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
4	Savannah River Mission Completion, LLC Top agencies DOE (Department of Energy)	$823,336,868	2.7%	Rank history: not on the FY2021 list, #4 in FY2022, #5 in FY2024 and #3 in FY2025; unchanged since FY2022.
5	General Dynamics Corporation 11 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and Arma Global Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$577,775,022	1.9%	Rank history: #6 in FY2021, #11 in FY2022, #3 in FY2024 and #5 in FY2025; up 6 since FY2022.
6	Science Applications International Corporation 6 awardees, including Forfeiture Support Associates LLC and Engility Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOJ (Department of Justice)	$533,367,473	1.7%	Rank history: #11 in FY2021, #7 in FY2022, #9 in FY2024 and #8 in FY2025; up 1 since FY2022.
7	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)	$478,395,611	1.6%	Rank history: #3 in FY2021, #5 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
8	CACI International Inc. 10 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and Caci-Wgi, LLC Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$477,011,056	1.6%	Rank history: #8 in FY2021, #6 in FY2022, #10 in FY2024 and #9 in FY2025; down 2 since FY2022.
9	HP Enterprise Services LLC 8 awardees, including Peraton Technology Services Inc., Peraton Enterprise Solutions LLC and Peraton Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$360,375,537	1.2%	Rank history: #61 in FY2021, #10 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
10	Huntington Ingalls Industries, Inc. 3 awardees, including HII Mission Technologies Corp, Fulcrum It Services, LLC and Huntington Ingalls Incorporated Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) ED (Department of Education)	$334,687,828	1.1%	Rank history: #89 in FY2021, #18 in FY2022, #8 in FY2024 and #7 in FY2025; up 8 since FY2022.
11	The Boston Consulting Group Inc 2 awardees, including BCG Federal Corp. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) Army (Department of the Army)	$329,228,416	1.1%	Rank history: #28 in FY2021, #39 in FY2022, #27 in FY2024 and not on the FY2025 list; up 28 since FY2022.
12	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) Navy (Department of the Navy) Army (Department of the Army)	$320,425,885	1.1%	Rank history: #17 in FY2021, #17 in FY2022, #15 in FY2024 and #22 in FY2025; up 5 since FY2022.
13	Deloitte Consulting LLP 2 awardees Top agencies HHS (Department of Health and Human Services) DHRA (Defense Human Resources Activity) DOS (Department of State)	$307,223,967	1.0%	Rank history: not on the FY2021 list, #12 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
14	Michael Baker International, LLC 3 awardees, including Sallyport Global Holdings Inc. Top agencies USAF (Department of the Air Force) DOS (Department of State)	$298,750,820	1.0%	Rank history: #19 in FY2021, #13 in FY2022, #21 in FY2024 and not on the FY2025 list; down 1 since FY2022.
15	Guidehouse Inc. 2 awardees Top agencies HHS (Department of Health and Human Services) SBA (Small Business Administration) DOS (Department of State)	$291,650,180	1.0%	Rank history: #9 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
16	DAI Global LLC Top agencies USAID (US Agency for International Development)	$276,525,151	0.9%	Rank history: #24 in FY2021, #14 in FY2022, #14 in FY2024 and #32 in FY2025; down 2 since FY2022.
17	Serco North America (Holdings) Inc 3 awardees, including Serco Inc. and Whitney Bradley & Brown, Inc. Top agencies HHS (Department of Health and Human Services) PBGC (Pension Benefit Guaranty Corporation) Navy (Department of the Navy)	$215,089,574	0.7%	Rank history: #13 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
18	ICF International, Inc. 3 awardees, including ICF Incorporated, L.L.C., ICF Macro Inc. and ICF Esac, LLC Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) EPA (Environmental Protection Agency)	$214,368,596	0.7%	Rank history: #21 in FY2021, #22 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
19	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)	$214,088,036	0.7%	Rank history: #16 in FY2021, #45 in FY2022 and not on the FY2024–FY2025 lists; up 26 since FY2022.
20	Leidos Holdings, Inc. 12 awardees, including Leidos, Inc. and 1901 Group, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$209,061,195	0.7%	Rank history: #62 in FY2021, #54 in FY2022, #13 in FY2024 and #11 in FY2025; up 34 since FY2022.
21	Ingenesis Inc. 2 awardees, including Kelly Services, Inc. Top agencies HHS (Department of Health and Human Services)	$202,410,197	0.7%	Rank history: #35 in FY2021, #15 in FY2022, #59 in FY2024 and not on the FY2025 list; down 6 since FY2022.
22	Accenture Inc. 2 awardees, including Accenture Federal Services LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DOJ (Department of Justice)	$200,852,602	0.7%	Rank history: not on the FY2021 list, #21 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
23	Ernst & Young LLP Top agencies Army (Department of the Army) DOJ (Department of Justice) OSD (Office of the Secretary of Defense)	$198,629,577	0.7%	Rank history: #44 in FY2021, #37 in FY2022 and not on the FY2024–FY2025 lists; up 14 since FY2022.
24	Northrop Grumman Corporation 12 awardees, including Northrop Grumman Systems Corporation and Vinnell Arabia, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOI (Department of the Interior)	$195,163,341	0.6%	Rank history: #76 in FY2021, not on the FY2022 list, #74 in FY2024 and not on the FY2025 list; up 221 since FY2022.
25	LMI Consulting, LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) HHS (Department of Health and Human Services)	$194,021,110	0.6%	Rank history: not on the FY2021 list, #26 in FY2022, #20 in FY2024 and #21 in FY2025; up 1 since FY2022.
26	Research Triangle Institute 2 awardees Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) DOJ (Department of Justice)	$191,236,618	0.6%	Rank history: #20 in FY2021, #28 in FY2022, #18 in FY2024 and #38 in FY2025; up 2 since FY2022.
27	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$180,203,926	0.6%	Rank history: #41 in FY2021, #40 in FY2022, #24 in FY2024 and #49 in FY2025; up 13 since FY2022.
28	Amentum Services, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$176,112,076	0.6%	Rank history: #18 in FY2021, #24 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
29	National Exchange Carrier Association Inc. Through Universal Service Administrative Company Top agencies FCC (Federal Communications Commission)	$174,722,555	0.6%	Rank history: #36 in FY2021, #73 in FY2022 and not on the FY2024–FY2025 lists; up 44 since FY2022.
30	International Business Machines Corporation 5 awardees Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$174,203,839	0.6%	Rank history: #30 in FY2021, #16 in FY2022, #30 in FY2024 and #26 in FY2025; down 14 since FY2022.
31	RTX Corporation 14 awardees, including Raytheon Company, Goodrich Corporation and Noresco, LLC Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) Navy (Department of the Navy)	$158,581,472	0.5%	Rank history: #12 in FY2021, #43 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
32	Kpmg L.L.P. 2 awardees Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) DCSA (Defense Counterintelligence and Security Agency)	$151,817,863	0.5%	Rank history: #48 in FY2021, #31 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
33	Jacobs Engineering Group Inc. 12 awardees, including Amentum Technology, Inc., The Keyw Corporation and Ch2M Hill, Inc. Top agencies USAF (Department of the Air Force) EPA (Environmental Protection Agency) DOJ (Department of Justice)	$148,357,205	0.5%	Rank history: #15 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
34	Mathematica Inc 2 awardees Top agencies HHS (Department of Health and Human Services) ED (Department of Education) DOJ (Department of Justice)	$142,826,140	0.5%	Rank history: #25 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
35	Advanced Technology Systems Inc. 2 awardees, including Salient Crgt, Inc. Top agencies USAF (Department of the Air Force) PBGC (Pension Benefit Guaranty Corporation) VA (Department of Veterans Affairs)	$136,832,235	0.4%	Rank history: #37 in FY2021, not on the FY2022 list, #64 in FY2024 and not on the FY2025 list; returned.
36	Tetra Tech, Inc. 14 awardees, including Ard, Inc., The Kaizen Company, LLC and Tetra TECH ES, Inc. Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force) DOE (Department of Energy)	$135,993,772	0.4%	Rank history: #39 in FY2021, #27 in FY2022, #36 in FY2024 and #45 in FY2025; down 9 since FY2022.
37	Kbr, Inc. 7 awardees, including KBR Wyle Services, LLC and Kord Technologies, LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$134,756,295	0.4%	Rank history: #29 in FY2021, #33 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
38	The GEO Group, Inc. Top agencies DOJ (Department of Justice)	$133,469,553	0.4%	Rank history: #34 in FY2021, #32 in FY2022, #49 in FY2024 and #41 in FY2025; down 6 since FY2022.
39	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$133,057,389	0.4%	Rank history: #64 in FY2021, #46 in FY2022, #47 in FY2024 and #35 in FY2025; up 7 since FY2022.
40	Deployed Services, LLC Top agencies HHS (Department of Health and Human Services)	$132,765,588	0.4%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2024 and not on the FY2025 list; new.
41	Signature Choice, LLC Top agencies VA (Department of Veterans Affairs)	$130,386,323	0.4%	Rank history: #31 in FY2021, #47 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
42	Deep Mile Networks LLC Top agencies DHA (Defense Health Agency)	$112,967,125	0.4%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2024 and #40 in FY2025; new.
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)	$108,002,187	0.4%	Rank history: #43 in FY2021, #48 in FY2022, #58 in FY2024 and #82 in FY2025; up 5 since FY2022.
44	H.i.g. Capital Management Inc. 3 awardees, including Empower AI, Inc. and Iron Bow Technologies, LLC Top agencies VA (Department of Veterans Affairs) OSD (Office of the Secretary of Defense) DISA (Defense Information Systems Agency)	$105,980,032	0.3%	Rank history: #22 in FY2021, #19 in FY2022 and not on the FY2024–FY2025 lists; down 25 since FY2022.
45	Cognosante Holdings, LLC 3 awardees, including Cognosante MVH LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$98,908,233	0.3%	Rank history: #33 in FY2021, #35 in FY2022, #48 in FY2024 and not on the FY2025 list; down 10 since FY2022.
46	The Mitre Corporation Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) DOS (Department of State)	$95,605,023	0.3%	Rank history: #77 in FY2021, #52 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
47	Lockheed Martin Corporation 5 awardees, including Lockheed Martin Services, LLC Top agencies USAF (Department of the Air Force)	$93,810,144	0.3%	Rank history: #46 in FY2021, #30 in FY2022, #38 in FY2024 and #42 in FY2025; down 17 since FY2022.
48	American Institutes for Research In the Behavioral Sciences 3 awardees, including Growth Transitions Inc. Top agencies ED (Department of Education) HHS (Department of Health and Human Services) DOL (Department of Labor)	$92,830,601	0.3%	Rank history: #57 in FY2021, #49 in FY2022, #53 in FY2024 and not on the FY2025 list; up 1 since FY2022.
49	Westat, Inc. Top agencies ED (Department of Education) HHS (Department of Health and Human Services) OPM (Office of Personnel Management)	$89,243,702	0.3%	Rank history: #51 in FY2021, #38 in FY2022, #26 in FY2024 and not on the FY2025 list; down 11 since FY2022.
50	Mantech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. and Mantech SRS Technologies, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) DARPA (Defense Advanced Research Projects Agency)	$86,785,327	0.3%	Rank history: #23 in FY2021, #8 in FY2022, #87 in FY2024 and not on the FY2025 list; down 42 since FY2022.
51	Carahsoft Technology Corp Top agencies HHS (Department of Health and Human Services) GSA (General Services Administration) Navy (Department of the Navy)	$83,597,311	0.3%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2024 and #30 in FY2025; new.
52	UnitedHealth Group Incorporated 4 awardees, including Optumhealth Care Solutions, LLC, Optumserve Technology Services, Inc. and The Lewin Group, Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$82,757,066	0.3%	Rank history: #38 in FY2021, #29 in FY2022, #46 in FY2024 and not on the FY2025 list; down 23 since FY2022.
53	Koniag, Inc. 6 awardees, including Tuknik Government Services LLC, Kadiak LLC and Pacarctic, LLC Top agencies DISA (Defense Information Systems Agency) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$82,318,969	0.3%	Rank history: #79 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
54	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$80,476,660	0.3%	Rank history: #50 in FY2021, #56 in FY2022, #57 in FY2024 and #55 in FY2025; up 2 since FY2022.
55	National Opinion Research Center Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) EEOC (Equal Employment Opportunity Commission)	$78,820,611	0.3%	Rank history: #42 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
56	Quality Health Strategies Inc. Through Qlarant Integrity Solutions LLC Top agencies HHS (Department of Health and Human Services)	$78,634,583	0.3%	Rank history: #58 in FY2021, #60 in FY2022, #81 in FY2024 and not on the FY2025 list; up 4 since FY2022.
57	Delta Solutions & Strategies LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Army (Department of the Army)	$77,758,594	0.3%	Rank history: not on the FY2021 list, #97 in FY2022 and not on the FY2024–FY2025 lists; up 40 since FY2022.
58	The Chenega Corporation 9 awardees, including Chenega Global Protection, LLC, Chenega Analytic Business Solutions, LLC and Chenega Healthcare Services LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) DHA (Defense Health Agency)	$76,862,962	0.3%	Rank history: #67 in FY2021, #69 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
59	Palladium International LLC Top agencies USAID (US Agency for International Development)	$76,215,586	0.2%	Rank history: #49 in FY2021, #41 in FY2022, #90 in FY2024 and not on the FY2025 list; down 18 since FY2022.
60	Grant Thornton International Ltd 2 awardees, including Grant Thornton LLP and Grant Thornton Public Sector LLC Top agencies USAF (Department of the Air Force) DOS (Department of State) ED (Department of Education)	$75,761,091	0.2%	Rank history: #70 in FY2021, #65 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
61	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) DHS (Department of Homeland Security)	$74,281,920	0.2%	Rank history: #26 in FY2021, #34 in FY2022 and not on the FY2024–FY2025 lists; down 27 since FY2022.
62	Govcio, LLC Top agencies VA (Department of Veterans Affairs)	$73,896,866	0.2%	Rank history: not on the FY2021 list, #36 in FY2022, #60 in FY2024 and #39 in FY2025; down 26 since FY2022.
63	Systems Plus, Inc. Top agencies USAF (Department of the Air Force) DOS (Department of State) DOL (Department of Labor)	$73,329,265	0.2%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2024 and not on the FY2025 list; up 318 since FY2022.
64	Information Systems & Networks Corporation Top agencies USDA (Department of Agriculture)	$72,666,080	0.2%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and not on the FY2025 list; new.
65	Calibre Systems Inc. Top agencies Army (Department of the Army) GSA (General Services Administration) DHRA (Defense Human Resources Activity)	$71,654,657	0.2%	Rank history: #60 in FY2021, #63 in FY2022, #73 in FY2024 and #72 in FY2025; down 2 since FY2022.
66	University System of Maryland 6 awardees, including University of Maryland, College Park, University of Maryland, Baltimore and University of Maryland Baltimore County Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$69,226,548	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 86 since FY2022.
67	The Cadmus Group LLC Top agencies USAID (US Agency for International Development) DHS (Department of Homeland Security) EPA (Environmental Protection Agency)	$68,132,893	0.2%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2024 and not on the FY2025 list; up 224 since FY2022.
68	Gartner, Inc. 2 awardees, including Personnel Decisions Research Institutes, LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$66,832,696	0.2%	Rank history: #93 in FY2021, #81 in FY2022, #78 in FY2024 and not on the FY2025 list; up 13 since FY2022.
69	Dawson's Realty & Mortgages, Inc. Top agencies USDA (Department of Agriculture) HHS (Department of Health and Human Services)	$64,913,889	0.2%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2024 and not on the FY2025 list; new.
70	BAE Systems PLC 4 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Australia Limited and BAE Systems Information and Electronic Systems Integration Inc. Top agencies DOJ (Department of Justice) USAF (Department of the Air Force)	$64,176,513	0.2%	Rank history: #45 in FY2021, #61 in FY2022, #100 in FY2024 and not on the FY2025 list; down 9 since FY2022.
71	Black Canyon Consulting LLC Top agencies HHS (Department of Health and Human Services)	$63,681,591	0.2%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2024 and #44 in FY2025; up 44 since FY2022.
72	Medical Science & Computing, LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$63,270,847	0.2%	Rank history: #54 in FY2021, #62 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
73	RP Professional Services, LLC Top agencies SBA (Small Business Administration) NSF (National Science Foundation)	$60,867,379	0.2%	Rank history: not on the FY2021 list, #66 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
74	Apogee Engineering LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) Navy (Department of the Navy)	$59,736,252	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 255 since FY2022.
75	Halvik LLC Top agencies NASA (National Aeronautics and Space Administration) USSOCOM (United States Special Operations Command) DOT (Department of Transportation)	$59,569,690	0.2%	Rank history: not on the FY2021 list, #72 in FY2022, #95 in FY2024 and #51 in FY2025; down 3 since FY2022.
76	On Assignment, Inc. 4 awardees, including ECS Federal, LLC, Iron Vine Security LLC and Enterprise Resource Performance, LLC Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$59,111,557	0.2%	Rank history: #92 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 32 since FY2022.
77	Oak Ridge Associated Universities, Incorporated Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$58,682,519	0.2%	Rank history: #75 in FY2021, #68 in FY2022, #86 in FY2024 and #84 in FY2025; down 9 since FY2022.
78	Tatitlek Corporation Through Tatitlek Technologies, LLC Top agencies OSD (Office of the Secretary of Defense) DOS (Department of State) Army (Department of the Army)	$58,375,588	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 265 since FY2022.
79	Analytic Services Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army) WHS (DOD Washington Headquarters Service)	$54,937,380	0.2%	Rank history: not on the FY2021 list, #90 in FY2022, #71 in FY2024 and #61 in FY2025; up 11 since FY2022.
80	ABT Global LLC 2 awardees Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) EPA (Environmental Protection Agency)	$54,497,569	0.2%	Rank history: #47 in FY2021, #51 in FY2022 and not on the FY2024–FY2025 lists; down 29 since FY2022.
81	Union Station Venture, Ltd. Through Jones Lang Lasalle Americas, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) GSA (General Services Administration)	$53,642,798	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 26 since FY2022.
82	Strategic Analysis, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) OSD (Office of the Secretary of Defense)	$53,375,031	0.2%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2024 and #34 in FY2025; up 24 since FY2022.
83	Miracle Systems LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$48,880,582	0.2%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2024 and #50 in FY2025; new.
84	Goldbelt, Incorporated 4 awardees, including Goldbelt C6, LLC, Goldbelt Professional Services, LLC and Peregrine Technical Solutions, LLC Top agencies HHS (Department of Health and Human Services) DOS (Department of State) USAF (Department of the Air Force)	$48,656,883	0.2%	Rank history: #91 in FY2021, #77 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
85	Poplicus Incorporated Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$47,785,082	0.2%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2024 and #94 in FY2025; up 37 since FY2022.
86	Systems Planning and Analysis, Inc. Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) DHS (Department of Homeland Security)	$47,693,814	0.2%	Rank history: #94 in FY2021, #83 in FY2022, not on the FY2024 list and #70 in FY2025; down 3 since FY2022.
87	Hendall Inc. Top agencies HHS (Department of Health and Human Services)	$47,138,958	0.2%	Rank history: not on the FY2021 list, #92 in FY2022, #99 in FY2024 and not on the FY2025 list; up 5 since FY2022.
88	Concept Solutions LLC Top agencies DOT (Department of Transportation)	$46,996,584	0.2%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2024 and #69 in FY2025; up 244 since FY2022.
89	Nova Global Supply and Services LLC 2 awardees, including Valiant Global Defense Services Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) Army (Department of the Army)	$46,574,628	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 58 since FY2022.
90	Chenega Enterprise Systems & Solutions, LLC Top agencies HHS (Department of Health and Human Services) DOE (Department of Energy) USAID (US Agency for International Development)	$45,458,961	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #79 in FY2024 and #85 in FY2025; down 1 since FY2022.
91	VSE Corporation 3 awardees, including Akimeka, LLC Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$45,215,094	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	System High Corporation Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$45,055,514	0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and #65 in FY2025; up 25 since FY2022.
93	WWC Global LLC Top agencies USSOCOM (United States Special Operations Command) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$44,264,339	0.1%	Rank history: #84 in FY2021, #78 in FY2022 and not on the FY2024–FY2025 lists; down 15 since FY2022.
94	Great Hill Solutions, LLC Top agencies DOS (Department of State)	$44,146,309	0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2024 and #63 in FY2025; up 119 since FY2022.
95	American Institute In Taiwan Top agencies DOS (Department of State) DHS (Department of Homeland Security)	$44,071,577	0.1%	Rank history: #85 in FY2021, #85 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
96	Aptive HTG LLC Top agencies VA (Department of Veterans Affairs)	$42,966,744	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #97 in FY2025; up 59 since FY2022.
97	Teamstaff Inc. 3 awardees, including Danya International LLC, Social & Scientific Systems, Inc. and Dlh, LLC Top agencies HHS (Department of Health and Human Services)	$42,948,054	0.1%	Rank history: not on the FY2021 list, #87 in FY2022 and not on the FY2024–FY2025 lists; down 10 since FY2022.
98	Digiflight Incorporated Top agencies Army (Department of the Army)	$42,852,682	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #89 in FY2025; up 65 since FY2022.
99	Sehlke Consulting LLC Top agencies Navy (Department of the Navy) DTRA (Defense Threat Reduction Agency) Army (Department of the Army)	$42,308,791	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 54 since FY2022.
100	Threat Tec, LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$40,971,765	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #77 in FY2025; up 85 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 $30.5 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 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