Top 100 Contractors in PSC R: Support Services (Professional, Administrative, Management), Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC R: Support Services (Professional, Administrative, Management), Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 21% of PSC R contract dollars from July 2025 through June 2026

Contract obligations: $103,166,496,540 Net of deobligations, by contracts coded PSC R or a code under it
Contractors: 12,580 Parent companies with an obligation
Largest contractor: Booz Allen Hamilton Holding Corporation $3.74 billion, 3.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Booz Allen Hamilton Holding Corporation 8 awardees, including Booz Allen Hamilton Inc., Ultra Electronics Advanced Tactical Systems Inc. and IAN Evan & Alexander Corp Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$3,740,600,795	3.4%	Rank history: #2 in FY2021, #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	The Boeing Company 23 awardees, including Boeing Sikorsky Aircraft Support, LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$3,178,297,304	2.9%	Rank history: #3 in FY2021, #5 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; up 1 since Jul 2024–Jun 2025.
3	Lockheed Martin Corporation 34 awardees, including Lockheed Martin Services, LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Army (Department of the Army)	$2,619,822,962	2.4%	Rank history: #4 in FY2021, #3 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; down 1 since Jul 2024–Jun 2025.
4	CACI International Inc. 13 awardees, including Caci, Inc. - Federal, Caci Technologies, LLC and Caci Nss, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$2,317,454,548	2.1%	Rank history: #13 in FY2021, #12 in FY2022, #8 in FY2023, #8 in FY2024 and #6 in FY2025; up 2 since Jul 2024–Jun 2025.
5	Amentum Holdings, Inc. 21 awardees, including Amentum Services, Inc., Amentum Technology, Inc. and Amentum Parsons Logistics Services LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$2,046,879,584	1.8%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #4 in FY2025; up 3 since Jul 2024–Jun 2025.
6	V2X, Inc. 6 awardees, including V2X Systems LLC, V2X Aerospace LLC and Vertex Modernization and Sustainment LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$2,008,919,355	1.8%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #5 in FY2025; down 1 since Jul 2024–Jun 2025.
7	General Dynamics Corporation 26 awardees, including General Dynamics Information Technology, Inc., General Dynamics Land Systems Inc. and General Dynamics Global Force, LLC Top agencies Army (Department of the Army) DOS (Department of State) USAF (Department of the Air Force)	$1,956,745,043	1.8%	Rank history: #5 in FY2021, #4 in FY2022, #4 in FY2023, #5 in FY2024 and #7 in FY2025; down 3 since Jul 2024–Jun 2025.
8	Deloitte 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$1,790,046,808	1.6%	Rank history: #6 in FY2021, #7 in FY2022, #9 in FY2023, #4 in FY2024 and #8 in FY2025; down 1 since Jul 2024–Jun 2025.
9	Science Applications International Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,589,067,491	1.4%	Rank history: #14 in FY2021, #8 in FY2022, #7 in FY2023, #9 in FY2024 and #12 in FY2025; up 2 since Jul 2024–Jun 2025.
10	Leidos Holdings, Inc. 16 awardees, including Leidos, Inc., Dynetics, Inc. and Hanford Mission Integration Solutions, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOE (Department of Energy)	$1,542,828,849	1.4%	Rank history: #12 in FY2021, #14 in FY2022, #12 in FY2023, #10 in FY2024 and #11 in FY2025; down 1 since Jul 2024–Jun 2025.
11	Northrop Grumman Corporation 36 awardees, including Northrop Grumman Systems Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,501,848,756	1.4%	Rank history: #9 in FY2021, #11 in FY2022, #10 in FY2023, #12 in FY2024 and #9 in FY2025; down 1 since Jul 2024–Jun 2025.
12	Reliance Steel & Aluminum Co. Through Ami Metals, Inc. Top agencies DHS (Department of Homeland Security)	$1,474,828,642	1.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
13	RTX Corporation 78 awardees, including Raytheon Company, Rockwell Collins, Inc. and Raytheon Southeast Asia Systems Company Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,426,001,590	1.3%	Rank history: #7 in FY2021, #10 in FY2022, #17 in FY2023, #15 in FY2024 and #14 in FY2025; up 3 since Jul 2024–Jun 2025.
14	Maximus Federal Services, Inc. 2 awardees, including Maximus Education LLC Top agencies HHS (Department of Health and Human Services) ED (Department of Education) OPM (Office of Personnel Management)	$1,367,284,742	1.2%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #10 in FY2025; up 3 since Jul 2024–Jun 2025.
15	The Aerospace Corporation Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) DOI (Department of the Interior)	$1,257,146,784	1.1%	Rank history: #19 in FY2021, #16 in FY2022, #15 in FY2023, #14 in FY2024 and #15 in FY2025; unchanged since Jul 2024–Jun 2025.
16	Huntington Ingalls Industries, Inc. 7 awardees, including HII Mission Technologies Corp, HII Technical Solutions Corporation and HII Fleet Support Group LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,202,557,489	1.1%	Rank history: #69 in FY2021, #29 in FY2022, #27 in FY2023, #16 in FY2024 and #17 in FY2025; down 2 since Jul 2024–Jun 2025.
17	KBR Wyle Services LLC 7 awardees, including KBR Services, LLC Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$1,191,205,334	1.1%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #13 in FY2025; down 4 since Jul 2024–Jun 2025.
18	Savannah River Mission Completion, LLC Top agencies DOE (Department of Energy)	$1,168,123,719	1.1%	Rank history: not on the FY2021 list, #26 in FY2022, #24 in FY2023, #21 in FY2024 and #18 in FY2025; unchanged since Jul 2024–Jun 2025.
19	Guidehouse Inc. 12 awardees, including Peraton Inc., Peraton Enterprise Solutions LLC and Peraton Technology Services Inc. Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DOS (Department of State)	$1,082,023,840	1.0%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and #29 in FY2025; up 53 since Jul 2024–Jun 2025.
20	Accenture Federal Services LLC 5 awardees, including Cognosante MVH LLC, Cognosante, LLC and Cognosante Cds, LLC Top agencies Army (Department of the Army) Treasury (Department of the Treasury) VA (Department of Veterans Affairs)	$1,035,951,570	0.9%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #19 in FY2025; unchanged since Jul 2024–Jun 2025.
21	Serco Inc 2 awardees Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) Army (Department of the Army)	$946,837,693	0.9%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, #22 in FY2024 and #22 in FY2025; up 2 since Jul 2024–Jun 2025.
22	Arctic Slope Regional Corporation 24 awardees, including Applied Research Solutions, Inc., Agile Decision Sciences, LLC and RSI Entech, LLC Top agencies USAF (Department of the Air Force) DOE (Department of Energy) Army (Department of the Army)	$927,215,969	0.8%	Rank history: #55 in FY2021, #61 in FY2022, #70 in FY2023, #55 in FY2024 and #21 in FY2025; up 31 since Jul 2024–Jun 2025.
23	Acquisition Logistics LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$863,116,496	0.8%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Jul 2024–Jun 2025.
24	Parsons Corporation 7 awardees, including Parsons Government Services Inc., Xator LLC and Altamira Technologies Corp Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) MDA (DOD Missile Defense Agency)	$831,197,826	0.7%	Rank history: #29 in FY2021, #28 in FY2022, #26 in FY2023, #24 in FY2024 and #20 in FY2025; down 3 since Jul 2024–Jun 2025.
25	The Mitre Corporation 2 awardees Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) VA (Department of Veterans Affairs)	$801,759,099	0.7%	Rank history: #22 in FY2021, #17 in FY2022, #13 in FY2023, #18 in FY2024 and #23 in FY2025; up 12 since Jul 2024–Jun 2025.
26	General Atomics Aeronautical Systems, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Navy (Department of the Navy)	$754,043,741	0.7%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and #30 in FY2025; up 2 since Jul 2024–Jun 2025.
27	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$744,735,910	0.7%	Rank history: #8 in FY2021, #9 in FY2022, #11 in FY2023, #11 in FY2024 and #16 in FY2025; down 15 since Jul 2024–Jun 2025.
28	BAE Systems 20 awardees, including BAE Systems Information and Electronic Systems Integration Inc., BAE Systems Technology Solutions & Services Inc. and BAE Systems Land and Armaments L.P. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$736,555,308	0.7%	Rank history: #33 in FY2021, #27 in FY2022, #23 in FY2023, #28 in FY2024 and #27 in FY2025; up 1 since Jul 2024–Jun 2025.
29	Peraton Inc. 3 awardees, including Peraton Enterprise Solutions LLC and Safeguard Services LLC Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) Army (Department of the Army)	$712,228,334	0.6%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #26 in FY2025; down 5 since Jul 2024–Jun 2025.
30	L3Harris Technologies, Inc. 28 awardees, including L3Harris Technologies Integrated Systems L.P., L3 Technologies, Inc. and L3Harris Forcex, Inc. Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) USSOCOM (United States Special Operations Command)	$623,731,010	0.6%	Rank history: #18 in FY2021, #15 in FY2022, #16 in FY2023, #27 in FY2024 and #25 in FY2025; down 8 since Jul 2024–Jun 2025.
31	ManTech International Corporation 3 awardees, including Mantech Advanced Systems International, Inc., Unison Software Inc. and TCW Asset Management Company LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$593,142,514	0.5%	Rank history: #23 in FY2021, #23 in FY2022, #34 in FY2023, #31 in FY2024 and #33 in FY2025; down 4 since Jul 2024–Jun 2025.
32	Salient Crgt, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$558,711,710	0.5%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; up 20 since Jul 2024–Jun 2025.
33	Sierra Nevada Company, LLC 4 awardees Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$549,860,169	0.5%	Rank history: #28 in FY2021, #46 in FY2022, #43 in FY2023, #32 in FY2024 and #34 in FY2025; down 1 since Jul 2024–Jun 2025.
34	Odyssey Systems Consulting Group, Ltd. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$541,963,494	0.5%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023, not on the FY2024 list and #44 in FY2025; up 30 since Jul 2024–Jun 2025.
35	Nelnet Servicing LLC Top agencies ED (Department of Education)	$445,472,901	0.4%	Rank history: #43 in FY2021, #42 in FY2022, #46 in FY2023, #43 in FY2024 and #39 in FY2025; up 24 since Jul 2024–Jun 2025.
36	Beyond New Horizons, LLC Top agencies USAF (Department of the Air Force)	$435,621,915	0.4%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; up 5 since Jul 2024–Jun 2025.
37	Strategic Storage Partners, Llc. Top agencies DOE (Department of Energy)	$424,026,021	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	LMI Consulting, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) OSD (Office of the Secretary of Defense)	$420,393,789	0.4%	Rank history: not on the FY2021 list, #81 in FY2022, #81 in FY2023, #51 in FY2024 and #48 in FY2025; up 11 since Jul 2024–Jun 2025.
39	Fedex Corp 5 awardees, including Fedex Supply Chain Distribution System, Inc., Federal Express Corporation and Fedex Custom Critical Inc. Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) DOJ (Department of Justice)	$414,732,050	0.4%	Rank history: #59 in FY2021, #60 in FY2022, #52 in FY2023, #50 in FY2024 and #38 in FY2025; up 4 since Jul 2024–Jun 2025.
40	Smartronix, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$413,655,754	0.4%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #28 in FY2025; down 7 since Jul 2024–Jun 2025.
41	Ernst & Young LLP 3 awardees, including Dignari, LLC Top agencies USAF (Department of the Air Force) HUD (Department of Housing and Urban Development) Navy (Department of the Navy)	$398,376,484	0.4%	Rank history: #40 in FY2021, #51 in FY2022, not on the FY2023 list, #34 in FY2024 and #36 in FY2025; down 2 since Jul 2024–Jun 2025.
42	DDB Chicago Inc. Top agencies Army (Department of the Army)	$392,097,224	0.4%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #40 in FY2025; up 3 since Jul 2024–Jun 2025.
43	Torch Technologies Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$383,614,097	0.3%	Rank history: #44 in FY2021, #69 in FY2022, #49 in FY2023, #52 in FY2024 and #42 in FY2025; up 3 since Jul 2024–Jun 2025.
44	Kpmg LLP Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) Army (Department of the Army)	$372,132,116	0.3%	Rank history: #39 in FY2021, #44 in FY2022, #44 in FY2023, #40 in FY2024 and #41 in FY2025; unchanged since Jul 2024–Jun 2025.
45	Systems Planning and Analysis, Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DHS (Department of Homeland Security)	$320,578,293	0.3%	Rank history: not on the FY2021 list, #92 in FY2022, #80 in FY2023, #70 in FY2024 and #51 in FY2025; up 13 since Jul 2024–Jun 2025.
46	Leonardo S.p.A. 7 awardees, including DRS Sustainment Systems, Inc., Laurel Technologies Partnership and DRS Network & Imaging Systems LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$314,785,381	0.3%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023, #76 in FY2024 and #37 in FY2025; up 31 since Jul 2024–Jun 2025.
47	E.f. Kearney, Limited 2 awardees, including Kearney & Company, P.C. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$301,164,078	0.3%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #69 in FY2025; up 21 since Jul 2024–Jun 2025.
48	Acacia Center for Justice Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$281,280,919	0.3%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #55 in FY2025; up 21 since Jul 2024–Jun 2025.
49	Peraton Risk Decision Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency) DHS (Department of Homeland Security)	$276,248,330	0.2%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 5 since Jul 2024–Jun 2025.
50	Scientific Research Corporation Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$259,156,537	0.2%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #65 in FY2025; up 24 since Jul 2024–Jun 2025.
51	The GEO Group, Inc. 2 awardees, including B.i. Incorporated Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice)	$243,427,044	0.2%	Rank history: #56 in FY2021, #45 in FY2022, #38 in FY2023, #46 in FY2024 and #50 in FY2025; unchanged since Jul 2024–Jun 2025.
52	Microsoft Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army) DISA (Defense Information Systems Agency)	$233,929,958	0.2%	Rank history: #61 in FY2021, #63 in FY2022, #65 in FY2023, #48 in FY2024 and #49 in FY2025; down 2 since Jul 2024–Jun 2025.
53	Intuitive Research and Technology Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$233,099,381	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 71 since Jul 2024–Jun 2025.
54	Missouri Higher Education Loan Authority Top agencies ED (Department of Education)	$229,907,000	0.2%	Rank history: not on the FY2021 list, #86 in FY2022, #56 in FY2023, #73 in FY2024 and #59 in FY2025; up 33 since Jul 2024–Jun 2025.
55	The Timken Company Through CGI Federal Inc. Top agencies DOS (Department of State) DOJ (Department of Justice) Navy (Department of the Navy)	$229,666,745	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56	Carrington Mortgage Services LLC Top agencies HUD (Department of Housing and Urban Development)	$224,463,968	0.2%	Rank history: #53 in FY2021, not on the FY2022–FY2023 lists, #25 in FY2024 and not on the FY2025 list; down 18 since Jul 2024–Jun 2025.
57	Trace Systems, Inc. Top agencies Army (Department of the Army)	$222,916,531	0.2%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 99 since Jul 2024–Jun 2025.
58	Carahsoft Technology Corp Top agencies HHS (Department of Health and Human Services) DOE (Department of Energy) DHS (Department of Homeland Security)	$216,318,659	0.2%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023, #74 in FY2024 and #81 in FY2025; up 31 since Jul 2024–Jun 2025.
59	SRC Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) EPA (Environmental Protection Agency)	$212,962,947	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023, #57 in FY2024 and #72 in FY2025; up 3 since Jul 2024–Jun 2025.
60	Clark Construction LLC Through Clark Construction Group LLC Top agencies Army (Department of the Army)	$212,693,510	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
61	Loyalty Support Services Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$211,793,031	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; up 31 since Jul 2024–Jun 2025.
62	International Business Machines Corporation 5 awardees Top agencies USAF (Department of the Air Force) DMEA (Defense Microelectronics Activity) DHS (Department of Homeland Security)	$205,876,379	0.2%	Rank history: #48 in FY2021, #50 in FY2022, #57 in FY2023, #60 in FY2024 and #61 in FY2025; down 6 since Jul 2024–Jun 2025.
63	Family Health International Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$203,014,346	0.2%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 156 since Jul 2024–Jun 2025.
64	Tetra Tech, Inc. 22 awardees, including LS Technologies LLC, Amyx Inc. and Bluewater Federal Solutions, Inc. Top agencies DOT (Department of Transportation) DOS (Department of State) DOE (Department of Energy)	$199,276,438	0.2%	Rank history: #38 in FY2021, #36 in FY2022, #33 in FY2023, #30 in FY2024 and #43 in FY2025; down 29 since Jul 2024–Jun 2025.
65	Noblis, Inc. Top agencies DOT (Department of Transportation) DTRA (Defense Threat Reduction Agency) DHS (Department of Homeland Security)	$196,412,585	0.2%	Rank history: #77 in FY2021, #56 in FY2022, #53 in FY2023, #63 in FY2024 and #66 in FY2025; down 2 since Jul 2024–Jun 2025.
66	Linquest Corporation Top agencies USAF (Department of the Air Force)	$184,630,265	0.2%	Rank history: #78 in FY2021, #98 in FY2022, #88 in FY2023, #95 in FY2024 and #76 in FY2025; up 14 since Jul 2024–Jun 2025.
67	Citibank, N.A. Top agencies DOS (Department of State) Smithsonian (Smithsonian Institution)	$184,057,647	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
68	Inter-CON Security Systems Inc. Top agencies DOS (Department of State) GAO (Government Accountability Office)	$182,550,440	0.2%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 81 since Jul 2024–Jun 2025.
69	Fluor Corporation 4 awardees, including Fluor Intercontinental, Inc., Fluor Federal Services Inc. and Fluor Intercontinental Germany GMBH Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$182,280,738	0.2%	Rank history: #35 in FY2021, #53 in FY2022, #39 in FY2023, #35 in FY2024 and #31 in FY2025; down 43 since Jul 2024–Jun 2025.
70	Johns Hopkins University 4 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC and The Johns Hopkins Health System Corporation Top agencies USAF (Department of the Air Force) USCYBERCOM (Department of Defense Cyber Command) USSOCOM (United States Special Operations Command)	$177,926,464	0.2%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Jul 2024–Jun 2025.
71	BCG Federal Corp. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$177,611,829	0.2%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; down 1 since Jul 2024–Jun 2025.
72	Westland Resources Inc. 2 awardees, including Bowman Consulting Group Ltd Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture)	$176,988,364	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	BAE Systems Land & Armaments L.P. Top agencies Army (Department of the Army)	$175,479,900	0.2%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #56 in FY2025; down 12 since Jul 2024–Jun 2025.
74	Oasis Systems, LLC Top agencies USAF (Department of the Air Force) DOT (Department of Transportation)	$175,347,983	0.2%	Rank history: #57 in FY2021, #41 in FY2022, #67 in FY2023, #89 in FY2024 and #67 in FY2025; down 9 since Jul 2024–Jun 2025.
75	Sos International LLC Top agencies DOJ (Department of Justice) DOS (Department of State) DHS (Department of Homeland Security)	$173,593,443	0.2%	Rank history: not on the FY2021–FY2025 lists; up 50 since Jul 2024–Jun 2025.
76	Credence Dynamo Solutions LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DHS (Department of Homeland Security)	$163,542,788	0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 19 since Jul 2024–Jun 2025.
77	Halvik LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) USSOCOM (United States Special Operations Command)	$163,043,945	0.1%	Rank history: not on the FY2021–FY2025 lists; up 75 since Jul 2024–Jun 2025.
78	Credence Management Solutions Limited Liability Company Top agencies USAF (Department of the Air Force) USAID (US Agency for International Development) Army (Department of the Army)	$160,870,700	0.1%	Rank history: #76 in FY2021, #67 in FY2022, #54 in FY2023, #33 in FY2024 and #60 in FY2025; down 36 since Jul 2024–Jun 2025.
79	Cherokee Nation 13 awardees, including Cherokee Nation Strategic Programs, L.L.C., Cherokee Nation Defense Solutions LLC and Cherokee Nation Government Solutions, L.L.C. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) DOS (Department of State)	$160,121,319	0.1%	Rank history: #27 in FY2021, #80 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
80	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$159,349,238	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023, not on the FY2024 list and #78 in FY2025; up 5 since Jul 2024–Jun 2025.
81	Edfinancial Services LLC Top agencies ED (Department of Education)	$158,878,119	0.1%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and #57 in FY2025; unchanged since Jul 2024–Jun 2025.
82	Modern Technology Solutions, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$157,726,544	0.1%	Rank history: not on the FY2021–FY2025 lists; up 38 since Jul 2024–Jun 2025.
83	Research Triangle Institute Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) DOJ (Department of Justice)	$157,455,714	0.1%	Rank history: #52 in FY2021, #58 in FY2022, #50 in FY2023, #42 in FY2024 and #75 in FY2025; down 35 since Jul 2024–Jun 2025.
84	CGI Federal Inc. 2 awardees, including Sehlke Consulting LLC Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration)	$155,766,076	0.1%	Rank history: not on the FY2021–FY2023 lists, #53 in FY2024 and #32 in FY2025; down 48 since Jul 2024–Jun 2025.
85	Kbr, Inc. 3 awardees, including KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior) Navy (Department of the Navy)	$154,232,783	0.1%	Rank history: #1 in FY2021, #1 in FY2022, #29 in FY2023, #85 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
86	Oshkosh Corporation 2 awardees, including Oshkosh Defense LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$153,402,490	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 183 since Jul 2024–Jun 2025.
87	Soldierpoint Digital Health, LLC Top agencies VA (Department of Veterans Affairs)	$148,149,422	0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; new, not ranked in Jul 2024–Jun 2025.
88	Avantus Federal LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense)	$146,309,902	0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; up 12 since Jul 2024–Jun 2025.
89	Trax International Corporation Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$140,131,097	0.1%	Rank history: not on the FY2021–FY2025 lists; up 182 since Jul 2024–Jun 2025.
90	Nana Regional Corporation, Inc. 13 awardees, including Akima Data Management LLC, Akima Systems Engineering LLC and Akima Global Logistics, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$139,273,006	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
91	Path Top agencies USAID (US Agency for International Development)	$135,062,532	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 297 since Jul 2024–Jun 2025.
92	P E Systems, Inc. Top agencies USAF (Department of the Air Force)	$134,955,374	0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 65 since Jul 2024–Jun 2025.
93	True North Communications Inc. Top agencies HHS (Department of Health and Human Services)	$133,642,390	0.1%	Rank history: not on the FY2021–FY2025 lists; up 98 since Jul 2024–Jun 2025.
94	WPP PLC 2 awardees, including Young & Rubicam LLC and Salmon Group Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DOE (Department of Energy)	$132,314,997	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023, #79 in FY2024 and not on the FY2025 list; up 19 since Jul 2024–Jun 2025.
95	Applied Research Associates, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$131,567,192	0.1%	Rank history: not on the FY2021 list, #96 in FY2022, #75 in FY2023, #96 in FY2024 and #98 in FY2025; down 11 since Jul 2024–Jun 2025.
96	Semanticbits LLC 4 awardees, including ICF Incorporated, L.L.C. and Incentive Technology Group LLC Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation) NSF (National Science Foundation)	$130,646,679	0.1%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #79 in FY2025; down 36 since Jul 2024–Jun 2025.
97	360 Patriot Enterprises LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$130,507,377	0.1%	Rank history: not on the FY2021–FY2025 lists; up 69 since Jul 2024–Jun 2025.
98	CQ JV, LLC Top agencies USAF (Department of the Air Force)	$129,669,003	0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; up 18 since Jul 2024–Jun 2025.
99	QED Systems LLC Top agencies Army (Department of the Army)	$128,849,354	0.1%	Rank history: not on the FY2021–FY2025 lists; up 28 since Jul 2024–Jun 2025.
100	Sev1Tech, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$128,422,874	0.1%	Rank history: #100 in FY2021, not on the FY2022 list, #90 in FY2023, not on the FY2024 list and #71 in FY2025; down 22 since Jul 2024–Jun 2025.

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100 of 12,580 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC R

Code	Net obligations	Largest contractor
R4 Professional Services	$77,754,115,841	Booz Allen Hamilton Holding Corporation
R7 Management Support Services	$20,505,889,888	Reliance Steel & Aluminum Co.
R6 Administrative Support Services	$4,906,490,810	Fedex Corp

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 $111 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 PSC R contractors in Jul 2025–Jun 2026?

1. Booz Allen Hamilton Holding Corporation ($3.74B), 2. The Boeing Company ($3.18B), 3. Lockheed Martin Corporation ($2.62B), 4. CACI International Inc. ($2.32B), 5. Amentum Holdings, Inc. ($2.05B), 6. V2X, Inc. ($2.01B), 7. General Dynamics Corporation ($1.96B), 8. Deloitte ($1.79B), 9. Science Applications International Corporation ($1.59B), 10. Leidos Holdings, Inc. ($1.54B).

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