Top 100 Contractors in PSC R499: Other Professional Services, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Booz Allen Hamilton Holding Corporation 7 awardees, including Booz Allen Hamilton Inc., Thunderyard Liberty JV LLC and Liberty It Solutions LLC Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$1,787,420,749	5.3%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #2 in FY2025; unchanged since FY2023.
2	The Boeing Company 13 awardees, including Boeing Sikorsky Aircraft Support, LLC and Jeppesen Foreflight, Inc. Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$1,647,949,261	4.9%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #1 in FY2025; unchanged since FY2023.
3	General Dynamics Corporation 11 awardees, including General Dynamics Information Technology, Inc., General Dynamics Land Systems Inc. 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)	$962,161,091	2.8%	Rank history: #6 in FY2021, #11 in FY2022, #5 in FY2023 and #5 in FY2025; up 2 since FY2023.
4	Olin Corporation 2 awardees, including Olin Winchester LLC Top agencies Army (Department of the Army)	$910,827,320	2.7%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
5	Savannah River Mission Completion, LLC Top agencies DOE (Department of Energy)	$885,649,780	2.6%	Rank history: not on the FY2021 list, #4 in FY2022, #4 in FY2023 and #3 in FY2025; down 1 since FY2023.
6	Maximus Federal Services, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$751,452,948	2.2%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
7	Deloitte 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) DOS (Department of State) VA (Department of Veterans Affairs)	$730,876,542	2.2%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2025; new.
8	Huntington Ingalls Industries, Inc. 4 awardees, including HII Mission Technologies Corp and Fulcrum It Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$556,990,160	1.6%	Rank history: #89 in FY2021, #18 in FY2022, #10 in FY2023 and #7 in FY2025; up 2 since FY2023.
9	Science Applications International Corporation 9 awardees, including Forfeiture Support Associates LLC Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) DOT (Department of Transportation)	$424,204,158	1.2%	Rank history: #11 in FY2021, #7 in FY2022, #6 in FY2023 and #8 in FY2025; down 3 since FY2023.
10	CACI International Inc. 8 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and Caci Enterprise Solutions, LLC Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$395,597,901	1.2%	Rank history: #8 in FY2021, #6 in FY2022, #8 in FY2023 and #9 in FY2025; down 2 since FY2023.
11	Family Endeavors, Inc. Top agencies HHS (Department of Health and Human Services)	$357,854,816	1.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
12	Guidehouse Inc. 4 awardees, including Peraton Technology Services Inc. and Aptim Federal Services, LLC Top agencies HHS (Department of Health and Human Services) DOS (Department of State) Army (Department of the Army)	$353,383,637	1.0%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; new.
13	Leidos Holdings, Inc. 10 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)	$341,204,876	1.0%	Rank history: #62 in FY2021, #54 in FY2022, #20 in FY2023 and #11 in FY2025; up 7 since FY2023.
14	DAI Global LLC Top agencies USAID (US Agency for International Development)	$315,138,794	0.9%	Rank history: #24 in FY2021, #14 in FY2022, #16 in FY2023 and #32 in FY2025; up 2 since FY2023.
15	Parsons Corporation 6 awardees, including Parsons Government Services Inc., Ptsi Managed Services Inc. and Xator LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Commerce (Department of Commerce)	$311,250,388	0.9%	Rank history: #17 in FY2021, #17 in FY2022, #12 in FY2023 and #22 in FY2025; down 3 since FY2023.
16	Peraton Inc. 2 awardees, including Peraton Enterprise Solutions LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$305,106,353	0.9%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
17	Serco Inc 2 awardees, including Whitney Bradley & Brown, Inc. Top agencies HHS (Department of Health and Human Services) PBGC (Pension Benefit Guaranty Corporation) Navy (Department of the Navy)	$305,057,025	0.9%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; up 103 since FY2023.
18	Research Triangle Institute Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) DOJ (Department of Justice)	$290,915,774	0.9%	Rank history: #20 in FY2021, #28 in FY2022, #26 in FY2023 and #38 in FY2025; up 8 since FY2023.
19	Accenture Federal Services LLC 3 awardees Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) Army (Department of the Army)	$270,909,742	0.8%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
20	LMI Consulting, LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) HHS (Department of Health and Human Services)	$261,469,995	0.8%	Rank history: not on the FY2021 list, #26 in FY2022, #25 in FY2023 and #21 in FY2025; up 5 since FY2023.
21	Michael Baker International, LLC 2 awardees, including Sallyport Global Holdings Inc. Top agencies USAF (Department of the Air Force)	$247,371,475	0.7%	Rank history: #19 in FY2021, #13 in FY2022, #14 in FY2023 and not on the FY2025 list; down 7 since FY2023.
22	Carahsoft Technology Corp Top agencies HHS (Department of Health and Human Services) DOE (Department of Energy) USAF (Department of the Air Force)	$215,259,443	0.6%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #30 in FY2025; up 29 since FY2023.
23	Ernst & Young LLP 3 awardees Top agencies Army (Department of the Army) DOJ (Department of Justice) DOE (Department of Energy)	$197,483,648	0.6%	Rank history: #44 in FY2021, #37 in FY2022, not on the FY2023 list and #25 in FY2025; returned.
24	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$184,073,337	0.5%	Rank history: #41 in FY2021, #40 in FY2022, #27 in FY2023 and #49 in FY2025; up 3 since FY2023.
25	Signature Choice II, LLC Top agencies VA (Department of Veterans Affairs)	$164,457,790	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
26	Westat, Inc. 2 awardees, including Insight Policy Research, Inc. Top agencies ED (Department of Education) HHS (Department of Health and Human Services) DOT (Department of Transportation)	$164,022,673	0.5%	Rank history: #51 in FY2021, #38 in FY2022, #49 in FY2023 and not on the FY2025 list; up 23 since FY2023.
27	The Boston Consulting Group Inc Through BCG Federal Corp. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) Army (Department of the Army)	$158,618,999	0.5%	Rank history: #28 in FY2021, #39 in FY2022, #11 in FY2023 and not on the FY2025 list; down 16 since FY2023.
28	Iron Bow Technologies, LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$158,415,253	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	KBR Wyle Services LLC 5 awardees Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$154,236,404	0.5%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; up 142 since FY2023.
30	International Business Machines Corporation 7 awardees Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$148,042,598	0.4%	Rank history: #30 in FY2021, #16 in FY2022, #30 in FY2023 and #26 in FY2025; unchanged since FY2023.
31	Caci Technologies LLC 5 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and Caci Enterprise Solutions, LLC Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency) USDA (Department of Agriculture)	$137,186,417	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	BCG Federal Corp. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) OPM (Office of Personnel Management)	$128,957,686	0.4%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
33	RTX Corporation 10 awardees, including Raytheon Company and Goodrich Corporation Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Army (Department of the Army)	$127,141,437	0.4%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
34	Dawson's Realty & Mortgages, Inc. Top agencies USDA (Department of Agriculture)	$118,880,130	0.4%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and not on the FY2025 list; up 35 since FY2023.
35	Heritage Health Solutions Inc. Top agencies DOJ (Department of Justice)	$116,420,706	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
36	Tetra Tech, Inc. 13 awardees, including Ard, Inc., Bluewater Federal Solutions, Inc. and Management Systems International, Inc. Top agencies USAID (US Agency for International Development) DOE (Department of Energy) USAF (Department of the Air Force)	$112,106,080	0.3%	Rank history: #39 in FY2021, #27 in FY2022, #36 in FY2023 and #45 in FY2025; unchanged since FY2023.
37	Amentum Services, Inc. 5 awardees, including Centra Technology, Inc. and URS Federal Services International, Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DOS (Department of State)	$111,750,190	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
38	Lockheed Martin Corporation 6 awardees, including Lockheed Martin Services, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$108,714,194	0.3%	Rank history: #46 in FY2021, #30 in FY2022, #47 in FY2023 and #42 in FY2025; up 9 since FY2023.
39	Kelly Services, Inc. Top agencies HHS (Department of Health and Human Services) EEOC (Equal Employment Opportunity Commission)	$108,298,465	0.3%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
40	Connected Alliances LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) DLA (Defense Logistics Agency)	$106,839,426	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 127 since FY2023.
41	Kpmg LLP Top agencies DCSA (Defense Counterintelligence and Security Agency) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$106,491,931	0.3%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
42	Arctic Slope Regional Corporation 8 awardees, including Asrc Federal Professional Services, LLC, Broadleaf, Inc. and Data Networks, Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency) Army (Department of the Army) Commerce (Department of Commerce)	$106,149,665	0.3%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; up 63 since FY2023.
43	Deployed Services, LLC Top agencies HHS (Department of Health and Human Services)	$103,636,072	0.3%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023 and not on the FY2025 list; down 3 since FY2023.
44	Poplicus Incorporated Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$102,323,300	0.3%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and #94 in FY2025; up 41 since FY2023.
45	Lantana Consulting Group, Inc. Top agencies HHS (Department of Health and Human Services)	$102,038,466	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 139 since FY2023.
46	UnitedHealth Group Incorporated 4 awardees, including Optumhealth Care Solutions, LLC, The Lewin Group, Inc. and Optumserve Technology Services, Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$100,095,842	0.3%	Rank history: #38 in FY2021, #29 in FY2022, #52 in FY2023 and not on the FY2025 list; up 6 since FY2023.
47	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$99,745,066	0.3%	Rank history: #64 in FY2021, #46 in FY2022, #39 in FY2023 and #35 in FY2025; down 8 since FY2023.
48	Cognosante Holdings, LLC 3 awardees, including Cognosante MVH LLC and Cognosante, LLC Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$97,853,329	0.3%	Rank history: #33 in FY2021, #35 in FY2022, #45 in FY2023 and not on the FY2025 list; down 3 since FY2023.
49	The GEO Group, Inc. Top agencies DOJ (Department of Justice)	$93,534,951	0.3%	Rank history: #34 in FY2021, #32 in FY2022, #38 in FY2023 and #41 in FY2025; down 11 since FY2023.
50	Semanticbits LLC 3 awardees, including ICF Incorporated, L.L.C. and Incentive Technology Group LLC Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) DHA (Defense Health Agency)	$92,617,576	0.3%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
51	Information Systems & Networks Corporation Top agencies USDA (Department of Agriculture)	$90,431,085	0.3%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023 and not on the FY2025 list; up 13 since FY2023.
52	The Cadmus Group LLC Top agencies DHS (Department of Homeland Security) USAID (US Agency for International Development) EPA (Environmental Protection Agency)	$86,906,363	0.3%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023 and not on the FY2025 list; up 15 since FY2023.
53	American Institutes for Research In the Behavioral Sciences 2 awardees Top agencies ED (Department of Education) HHS (Department of Health and Human Services) DOL (Department of Labor)	$83,882,088	0.2%	Rank history: #57 in FY2021, #49 in FY2022, #48 in FY2023 and not on the FY2025 list; down 5 since FY2023.
54	Deep Mile Networks LLC Top agencies DHA (Defense Health Agency)	$82,026,750	0.2%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and #40 in FY2025; down 12 since FY2023.
55	Strategic Analysis, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$82,006,974	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #34 in FY2025; up 27 since FY2023.
56	Jacobs Government Services Company 4 awardees, including Amentum Technology, Inc. and Jacobs Engineering Group Inc. Top agencies USAF (Department of the Air Force) EPA (Environmental Protection Agency) GSA (General Services Administration)	$80,375,202	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
57	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$75,016,374	0.2%	Rank history: #50 in FY2021, #56 in FY2022, #54 in FY2023 and #55 in FY2025; down 3 since FY2023.
58	Sapient Corporation 2 awardees, including Plowshare Group, Inc. and Sapient Government Services, Inc. Top agencies HHS (Department of Health and Human Services)	$73,277,283	0.2%	Rank history: #43 in FY2021, #48 in FY2022, #43 in FY2023 and #82 in FY2025; down 15 since FY2023.
59	Ingenesis Inc. Through Kelly Services, Inc. Top agencies HHS (Department of Health and Human Services)	$72,649,190	0.2%	Rank history: #35 in FY2021, #15 in FY2022, #21 in FY2023 and not on the FY2025 list; down 38 since FY2023.
60	Govcio, LLC Top agencies VA (Department of Veterans Affairs) USSOCOM (United States Special Operations Command)	$70,325,395	0.2%	Rank history: not on the FY2021 list, #36 in FY2022, #62 in FY2023 and #39 in FY2025; up 2 since FY2023.
61	Digital Mobilizations LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$69,604,834	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 51 since FY2023.
62	Systems Plus, Inc. Top agencies USAF (Department of the Air Force) DOS (Department of State) DHA (Defense Health Agency)	$69,266,509	0.2%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and not on the FY2025 list; up 1 since FY2023.
63	Hive Group, LLC Top agencies GSA (General Services Administration)	$68,234,287	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 100 since FY2023.
64	Advanced Technology Systems Inc. 2 awardees, including Salient Crgt, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) PBGC (Pension Benefit Guaranty Corporation)	$68,141,081	0.2%	Rank history: #37 in FY2021, not on the FY2022 list, #35 in FY2023 and not on the FY2025 list; down 29 since FY2023.
65	CGI Federal Inc. Top agencies DOS (Department of State) DOI (Department of the Interior) Commerce (Department of Commerce)	$67,304,282	0.2%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
66	Bryce Space and Technology, LLC Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration)	$67,143,646	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 151 since FY2023.
67	Black Canyon Consulting LLC Top agencies HHS (Department of Health and Human Services)	$67,034,495	0.2%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and #44 in FY2025; up 4 since FY2023.
68	Great Hill Solutions, LLC Top agencies DOS (Department of State) DSCA (Defense Security Cooperation Agency) HHS (Department of Health and Human Services)	$66,875,517	0.2%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #63 in FY2025; up 26 since FY2023.
69	E.f. Kearney, Limited 2 awardees, including Kearney & Company, P.C. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) SSA (Social Security Administration)	$66,821,476	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	Salient Crgt, Inc. Top agencies USAF (Department of the Air Force) PBGC (Pension Benefit Guaranty Corporation) HHS (Department of Health and Human Services)	$65,370,384	0.2%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023 list and #16 in FY2025; up 67 since FY2023.
71	Analytic Services Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army)	$64,624,262	0.2%	Rank history: not on the FY2021 list, #90 in FY2022, #79 in FY2023 and #61 in FY2025; up 8 since FY2023.
72	Maveris LLC Top agencies VA (Department of Veterans Affairs)	$62,688,743	0.2%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2025; up 37 since FY2023.
73	Calibre Systems Inc. Top agencies Army (Department of the Army) OPM (Office of Personnel Management) USAF (Department of the Air Force)	$60,815,030	0.2%	Rank history: #60 in FY2021, #63 in FY2022, #65 in FY2023 and #72 in FY2025; down 8 since FY2023.
74	Northrop Grumman Corporation 13 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$60,025,763	0.2%	Rank history: #76 in FY2021, not on the FY2022 list, #24 in FY2023 and not on the FY2025 list; down 50 since FY2023.
75	Mathematica Inc. Top agencies HHS (Department of Health and Human Services) ED (Department of Education)	$59,167,515	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Goldschmitt and Associates LLC Top agencies SBA (Small Business Administration) Treasury (Department of the Treasury) Army (Department of the Army)	$56,708,246	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 81 since FY2023.
77	Apogee Engineering, LLC Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$54,520,990	0.2%	Rank history: #56 in FY2021, #71 in FY2022, not on the FY2023 list and #47 in FY2025; returned.
78	Gartner, Inc. 3 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$53,320,425	0.2%	Rank history: #93 in FY2021, #81 in FY2022, #68 in FY2023 and not on the FY2025 list; down 10 since FY2023.
79	Chenega Enterprise Systems & Solutions, LLC Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) DOE (Department of Energy)	$52,641,597	0.2%	Rank history: not on the FY2021 list, #89 in FY2022, #90 in FY2023 and #85 in FY2025; up 11 since FY2023.
80	Miracle Systems LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$52,378,019	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #50 in FY2025; up 3 since FY2023.
81	Quality Health Strategies Inc. Through Qlarant Integrity Solutions LLC Top agencies HHS (Department of Health and Human Services)	$51,640,622	0.2%	Rank history: #58 in FY2021, #60 in FY2022, #56 in FY2023 and not on the FY2025 list; down 25 since FY2023.
82	Tista Science and Technology Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$51,239,166	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 61 since FY2023.
83	Encompass LLC Top agencies USAID (US Agency for International Development)	$51,118,339	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 76 since FY2023.
84	Nika Technologies Inc. Top agencies Army (Department of the Army)	$50,777,132	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Amentum Holdings, Inc. 3 awardees, including Amentum Services, Inc. Top agencies Navy (Department of the Navy) DOS (Department of State) Army (Department of the Army)	$50,331,870	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
86	Oak Ridge Associated Universities, Incorporated Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$50,254,448	0.1%	Rank history: #75 in FY2021, #68 in FY2022, #77 in FY2023 and #84 in FY2025; down 9 since FY2023.
87	Mantech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. and Mantech SRS Technologies, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) DHA (Defense Health Agency)	$49,421,135	0.1%	Rank history: #23 in FY2021, #8 in FY2022, #50 in FY2023 and not on the FY2025 list; down 37 since FY2023.
88	System High Corporation Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$49,130,455	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #65 in FY2025; up 4 since FY2023.
89	Mks2 LLC Top agencies Army (Department of the Army)	$49,013,402	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 105 since FY2023.
90	Palladium International LLC Top agencies USAID (US Agency for International Development)	$48,447,756	0.1%	Rank history: #49 in FY2021, #41 in FY2022, #59 in FY2023 and not on the FY2025 list; down 31 since FY2023.
91	Gzo, Inc. Top agencies USAF (Department of the Air Force)	$48,257,199	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Credence Management Solutions Limited Liability Company Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) Army (Department of the Army)	$48,229,135	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 101 since FY2023.
93	Celeen LLC Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$47,796,019	0.1%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2025; new.
94	Delta Solutions & Strategies LLC Top agencies USAF (Department of the Air Force)	$47,709,674	0.1%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; new.
95	Halvik LLC Top agencies NASA (National Aeronautics and Space Administration) USSOCOM (United States Special Operations Command) DOT (Department of Transportation)	$47,305,176	0.1%	Rank history: not on the FY2021 list, #72 in FY2022, #75 in FY2023 and #51 in FY2025; down 20 since FY2023.
96	The Mitre Corporation Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) DHS (Department of Homeland Security)	$47,107,561	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	Palantir Technologies Inc. Top agencies HHS (Department of Health and Human Services)	$46,648,258	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 383 since FY2023.
98	Concept Solutions LLC Top agencies DOT (Department of Transportation)	$45,740,371	0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and #69 in FY2025; down 10 since FY2023.
99	Hendall Inc. Top agencies HHS (Department of Health and Human Services)	$45,653,906	0.1%	Rank history: not on the FY2021 list, #92 in FY2022, #87 in FY2023 and not on the FY2025 list; down 12 since FY2023.
100	BAE Systems PLC 4 awardees, including BAE Systems Technology Solutions & Services Inc. and BAE Systems Australia Limited Top agencies DOJ (Department of Justice) USAF (Department of the Air Force)	$45,123,943	0.1%	Rank history: #45 in FY2021, #61 in FY2022, #70 in FY2023 and not on the FY2025 list; down 30 since FY2023.

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 $34 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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