Top 100 Contractors in PSC R408: Program Management/Support Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC R408: Program Management/Support Services, 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 22% of PSC R408 contract dollars from July 2025 through June 2026

Contract obligations: $9,882,517,051 Net of deobligations, by contracts coded PSC R408
Contractors: 1,650 Parent companies with an obligation
Largest contractor: Booz Allen Hamilton Holding Corporation $465 million, 4.3% 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 2 awardees, including Booz Allen Hamilton Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) Commerce (Department of Commerce)	$465,269,026	4.3%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023, #3 in FY2024 and #2 in FY2025; up 1 since Jul 2024–Jun 2025.
2	Deloitte 3 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top agencies DHS (Department of Homeland Security) DOS (Department of State) Navy (Department of the Navy)	$354,581,321	3.3%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023, #2 in FY2024 and #1 in FY2025; down 1 since Jul 2024–Jun 2025.
3	Serco Inc Top agencies Navy (Department of the Navy) Army (Department of the Army) DOL (Department of Labor)	$298,099,936	2.7%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, #7 in FY2024 and #4 in FY2025; up 3 since Jul 2024–Jun 2025.
4	Accenture Federal Services LLC 3 awardees, including Cognosante, LLC Top agencies Treasury (Department of the Treasury) DOJ (Department of Justice) USAF (Department of the Air Force)	$224,797,887	2.1%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #5 in FY2025; up 6 since Jul 2024–Jun 2025.
5	Carrington Mortgage Services LLC Top agencies HUD (Department of Housing and Urban Development)	$224,463,968	2.1%	Rank history: #4 in FY2021, #44 in FY2022, not on the FY2023 list, #1 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
6	Lockheed Martin Corporation 7 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$206,042,928	1.9%	Rank history: #32 in FY2021, #65 in FY2022, #32 in FY2023, #17 in FY2024 and #75 in FY2025; up 79 since Jul 2024–Jun 2025.
7	The GEO Group, Inc. Through B.i. Incorporated Top agencies DHS (Department of Homeland Security)	$158,425,075	1.5%	Rank history: #7 in FY2021, #5 in FY2022, #4 in FY2023, #5 in FY2024 and #7 in FY2025; unchanged since Jul 2024–Jun 2025.
8	BAE Systems 3 awardees, including BAE Systems Land and Armaments L.P. and BAE Systems Technology Solutions & Services Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice) DHS (Department of Homeland Security)	$154,406,929	1.4%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; up 491 since Jul 2024–Jun 2025.
9	360 Patriot Enterprises LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$129,508,986	1.2%	Rank history: #79 in FY2021, #37 in FY2022, #17 in FY2023, #22 in FY2024 and #16 in FY2025; up 14 since Jul 2024–Jun 2025.
10	CACI International Inc. 5 awardees, including Caci, Inc. - Federal and Caci Nss, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) DHS (Department of Homeland Security)	$124,037,498	1.1%	Rank history: #12 in FY2021, #14 in FY2022, #16 in FY2023, #14 in FY2024 and #9 in FY2025; down 1 since Jul 2024–Jun 2025.
11	Guidehouse Inc. 8 awardees, including Guidehouse Digital LLC, Peraton Inc. and Peraton Technology Services Inc. Top agencies HHS (Department of Health and Human Services) DOS (Department of State) DHS (Department of Homeland Security)	$114,818,734	1.1%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; up 22 since Jul 2024–Jun 2025.
12	General Dynamics Corporation 7 awardees, including General Dynamics Information Technology Inc. and General Dynamics Mission Systems, Inc. Top agencies DOS (Department of State) DHA (Defense Health Agency) USAF (Department of the Air Force)	$102,542,047	0.9%	Rank history: #3 in FY2021, #3 in FY2022, #1 in FY2023, #8 in FY2024 and #11 in FY2025; down 4 since Jul 2024–Jun 2025.
13	Science Applications International Corporation 2 awardees, including Forfeiture Support Associates LLC Top agencies DOJ (Department of Justice) Army (Department of the Army) DHS (Department of Homeland Security)	$102,387,690	0.9%	Rank history: #6 in FY2021, #6 in FY2022, #5 in FY2023, #4 in FY2024 and #8 in FY2025; down 8 since Jul 2024–Jun 2025.
14	The Timken Company Through CGI Federal Inc. Top agencies DOS (Department of State) NASA (National Aeronautics and Space Administration) USAID (US Agency for International Development)	$99,552,087	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
15	Strategic Resources, Incorporated Top agencies Army (Department of the Army)	$99,398,849	0.9%	Rank history: not on the FY2021 list, #72 in FY2022, #69 in FY2023, #18 in FY2024 and #19 in FY2025; up 7 since Jul 2024–Jun 2025.
16	V2X, Inc. 2 awardees, including Vertex Modernization and Sustainment LLC and V2X Systems LLC Top agencies USAF (Department of the Air Force) DOS (Department of State) Navy (Department of the Navy)	$94,283,194	0.9%	Rank history: not on the FY2021–FY2023 lists, #34 in FY2024 and #40 in FY2025; up 400 since Jul 2024–Jun 2025.
17	Tetra Tech, Inc. 5 awardees, including LS Technologies LLC, Ard, Inc. and Amyx Inc. Top agencies DOS (Department of State) DOT (Department of Transportation) USAID (US Agency for International Development)	$83,997,659	0.8%	Rank history: #9 in FY2021, #7 in FY2022, #9 in FY2023, #9 in FY2024 and #12 in FY2025; down 5 since Jul 2024–Jun 2025.
18	Precise Systems, Inc. Top agencies Navy (Department of the Navy)	$82,419,087	0.8%	Rank history: #26 in FY2021, #20 in FY2022, #14 in FY2023, #15 in FY2024 and #18 in FY2025; up 1 since Jul 2024–Jun 2025.
19	Arctic Slope Regional Corporation 10 awardees, including Asrc Federal Agile Management LLC, Agile Decision Sciences, LLC and Asrc Federal Technology Solutions, LLC Top agencies DOJ (Department of Justice) DHA (Defense Health Agency) USAF (Department of the Air Force)	$80,643,312	0.7%	Rank history: #63 in FY2021, not on the FY2022–FY2023 lists, #97 in FY2024 and #17 in FY2025; up 152 since Jul 2024–Jun 2025.
20	Management Analysis Technologies (Mat), Incorporated Top agencies Army (Department of the Army)	$78,908,148	0.7%	Rank history: #53 in FY2021, #56 in FY2022, #35 in FY2023, #26 in FY2024 and #24 in FY2025; up 16 since Jul 2024–Jun 2025.
21	Systems Planning and Analysis, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$77,135,115	0.7%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023, #32 in FY2024 and #23 in FY2025; up 5 since Jul 2024–Jun 2025.
22	It Concepts, Inc. Top agencies USAF (Department of the Air Force) USAID (US Agency for International Development) CFPB (Consumer Financial Protection Bureau)	$74,133,997	0.7%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #27 in FY2025; up 29 since Jul 2024–Jun 2025.
23	CGI Federal Inc. Top agencies DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration) DOS (Department of State)	$69,623,714	0.6%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #3 in FY2025; down 19 since Jul 2024–Jun 2025.
24	Metrostar Systems, LLC Top agencies WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force) Army (Department of the Army)	$65,075,411	0.6%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023, not on the FY2024 list and #15 in FY2025; up 4 since Jul 2024–Jun 2025.
25	Creative It Solutions LLC Top agencies DOS (Department of State) USAF (Department of the Air Force)	$63,647,253	0.6%	Rank history: not on the FY2021 list, #59 in FY2022, #34 in FY2023, #25 in FY2024 and #25 in FY2025; down 4 since Jul 2024–Jun 2025.
26	Salient Crgt, Inc. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$62,319,255	0.6%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; up 23 since Jul 2024–Jun 2025.
27	The Boeing Company 3 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DOT (Department of Transportation)	$59,400,041	0.5%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #42 in FY2025; up 18 since Jul 2024–Jun 2025.
28	Credence Dynamo Solutions LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$54,280,981	0.5%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #30 in FY2025; up 16 since Jul 2024–Jun 2025.
29	Goldbelt Incorporated 3 awardees, including Goldbelt Glacier Health Services, LLC and CP Marine, LLC Top agencies Army (Department of the Army) Smithsonian (Smithsonian Institution)	$49,263,706	0.5%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and #38 in FY2025; up 82 since Jul 2024–Jun 2025.
30	Stracon Services Group LLC Top agencies Navy (Department of the Navy)	$47,925,856	0.4%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 42 since Jul 2024–Jun 2025.
31	Digiflight Incorporated Top agencies Army (Department of the Army)	$46,972,980	0.4%	Rank history: #57 in FY2021, not on the FY2022–FY2023 lists, #61 in FY2024 and #60 in FY2025; up 34 since Jul 2024–Jun 2025.
32	Tekla Research, Inc. Top agencies Navy (Department of the Navy)	$46,128,479	0.4%	Rank history: #82 in FY2021, #85 in FY2022, #68 in FY2023, #68 in FY2024 and #37 in FY2025; up 11 since Jul 2024–Jun 2025.
33	Total Computer Solutions, Inc. Top agencies Army (Department of the Army)	$45,366,760	0.4%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and #39 in FY2025; up 37 since Jul 2024–Jun 2025.
34	Credence Management Solutions Limited Liability Company Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOJ (Department of Justice)	$44,956,903	0.4%	Rank history: #50 in FY2021, #86 in FY2022, not on the FY2023–FY2024 lists and #32 in FY2025; up 12 since Jul 2024–Jun 2025.
35	Noblis, Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army) USAF (Department of the Air Force)	$42,315,071	0.4%	Rank history: #44 in FY2021, #24 in FY2022, #29 in FY2023, #23 in FY2024 and #36 in FY2025; down 4 since Jul 2024–Jun 2025.
36	Oasis Systems, LLC Top agencies DOT (Department of Transportation)	$42,128,161	0.4%	Rank history: #76 in FY2021, #46 in FY2022, #44 in FY2023, #52 in FY2024 and #54 in FY2025; up 19 since Jul 2024–Jun 2025.
37	RTX Corporation 5 awardees, including Goodrich Corporation and Raytheon Company Top agencies USAF (Department of the Air Force) USCYBERCOM (Department of Defense Cyber Command)	$41,321,701	0.4%	Rank history: #24 in FY2021, #71 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	DCS Corporation Top agencies Army (Department of the Army)	$40,134,351	0.4%	Rank history: #81 in FY2021 and not on the FY2022–FY2025 lists; up 120 since Jul 2024–Jun 2025.
39	Parsons Corporation Through Parsons Government Services Inc. Top agencies DOL (Department of Labor) MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense)	$38,960,890	0.4%	Rank history: #67 in FY2021, #64 in FY2022, #39 in FY2023, #84 in FY2024 and #46 in FY2025; up 8 since Jul 2024–Jun 2025.
40	Cherokee Nation 7 awardees, including Cherokee Nation Strategic Programs, L.L.C., Cherokee Nation Defense Solutions LLC and Cherokee Nation Aerospace and Defense, L.L.C. Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Treasury (Department of the Treasury)	$38,725,830	0.4%	Rank history: #47 in FY2021, #47 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; up 107 since Jul 2024–Jun 2025.
41	Cyber Engineering and Technical Alliance, LLC Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$37,159,833	0.3%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #44 in FY2025; up 66 since Jul 2024–Jun 2025.
42	Sev1Tech, LLC Top agencies Army (Department of the Army)	$35,335,515	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
43	Synchron, LLC Top agencies Navy (Department of the Navy)	$34,845,348	0.3%	Rank history: not on the FY2021 list, #100 in FY2022, not on the FY2023 list, #79 in FY2024 and #73 in FY2025; up 57 since Jul 2024–Jun 2025.
44	MEC Energy Services LLC Top agencies DOS (Department of State)	$34,775,513	0.3%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; up 29 since Jul 2024–Jun 2025.
45	KMS Solutions, LLC Top agencies Navy (Department of the Navy)	$34,366,689	0.3%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and #69 in FY2025; up 29 since Jul 2024–Jun 2025.
46	Northrop Grumman Corporation 4 awardees, including Northrop Grumman Systems Corp Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$34,167,189	0.3%	Rank history: #14 in FY2021, #13 in FY2022, not on the FY2023 list, #43 in FY2024 and #43 in FY2025; down 7 since Jul 2024–Jun 2025.
47	Ignite Digital Federal Services, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$33,910,617	0.3%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023, #48 in FY2024 and #58 in FY2025; up 20 since Jul 2024–Jun 2025.
48	Chippewa Government Solutions, LLC Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$33,230,024	0.3%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	Eagle Harbor, LLC Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$32,810,543	0.3%	Rank history: not on the FY2021 list, #87 in FY2022, #73 in FY2023, #49 in FY2024 and #53 in FY2025; up 8 since Jul 2024–Jun 2025.
50	Mission for Essential Drugs and Supplies Top agencies USAID (US Agency for International Development)	$32,766,931	0.3%	Rank history: not on the FY2021–FY2025 lists; up 110 since Jul 2024–Jun 2025.
51	LMI Consulting, LLC Top agencies DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense) DOS (Department of State)	$32,534,021	0.3%	Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #52 in FY2025; down 26 since Jul 2024–Jun 2025.
52	Analytic Services Inc. Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service)	$31,607,827	0.3%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023, not on the FY2024 list and #83 in FY2025; up 80 since Jul 2024–Jun 2025.
53	Modern Technology Solutions, Inc. Top agencies USAF (Department of the Air Force)	$31,522,379	0.3%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #76 in FY2024 and #61 in FY2025; up 7 since Jul 2024–Jun 2025.
54	Jaria LLC Top agencies OSD (Office of the Secretary of Defense) DOS (Department of State)	$31,286,200	0.3%	Rank history: not on the FY2021–FY2025 lists; up 151 since Jul 2024–Jun 2025.
55	American Technology Solutions International Corp Top agencies Navy (Department of the Navy)	$30,652,584	0.3%	Rank history: not on the FY2021–FY2025 lists; up 84 since Jul 2024–Jun 2025.
56	Vector CSP LLC Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$28,506,531	0.3%	Rank history: not on the FY2021–FY2025 lists; up 58 since Jul 2024–Jun 2025.
57	Bowhead Program Management & Operations, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$28,414,436	0.3%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #70 in FY2025; up 35 since Jul 2024–Jun 2025.
58	Intellibridge LLC Through Intelliware Systems Inc. Top agencies DOJ (Department of Justice)	$28,092,144	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
59	Regulus Group, LLC Top agencies DOT (Department of Transportation)	$27,573,556	0.3%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and #67 in FY2025; up 51 since Jul 2024–Jun 2025.
60	Alpha Omega Group LLC Top agencies Navy (Department of the Navy)	$27,388,939	0.3%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 76 since Jul 2024–Jun 2025.
61	Tunnell Consulting Inc. Top agencies HHS (Department of Health and Human Services)	$27,104,670	0.3%	Rank history: not on the FY2021–FY2023 lists, #28 in FY2024 and #56 in FY2025; down 45 since Jul 2024–Jun 2025.
62	Ernst & Young LLP 2 awardees, including Dignari, LLC Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture) DOJ (Department of Justice)	$26,967,534	0.2%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; up 41 since Jul 2024–Jun 2025.
63	Significance Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$26,710,407	0.2%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and #68 in FY2025; up 24 since Jul 2024–Jun 2025.
64	Nana Regional Corporation, Inc. 5 awardees, including Akima Data Management LLC Top agencies DODIG (Department of Defense Inspector General) DSCA (Defense Security Cooperation Agency) WHS (DOD Washington Headquarters Service)	$26,678,225	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
65	Tribility LLC Top agencies VA (Department of Veterans Affairs)	$26,580,366	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
66	Davis Defense Group, Inc. Top agencies Navy (Department of the Navy)	$26,399,531	0.2%	Rank history: not on the FY2021–FY2025 lists; up 90 since Jul 2024–Jun 2025.
67	Linquest Corporation Top agencies USAF (Department of the Air Force)	$26,027,908	0.2%	Rank history: not on the FY2021 list, #99 in FY2022, #70 in FY2023, #88 in FY2024 and #72 in FY2025; down 13 since Jul 2024–Jun 2025.
68	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies USCYBERCOM (Department of Defense Cyber Command) Army (Department of the Army)	$25,806,348	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
69	Sierra Nevada Company, LLC 2 awardees Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$25,249,686	0.2%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #22 in FY2025; down 39 since Jul 2024–Jun 2025.
70	Cherokee Nation System Solutions LLC Top agencies DOS (Department of State) DOI (Department of the Interior) Navy (Department of the Navy)	$24,988,167	0.2%	Rank history: #72 in FY2021, #54 in FY2022, #50 in FY2023, #36 in FY2024 and #63 in FY2025; down 29 since Jul 2024–Jun 2025.
71	Arservices, Limited Top agencies DTRA (Defense Threat Reduction Agency)	$24,973,819	0.2%	Rank history: not on the FY2021 list, #81 in FY2022, #71 in FY2023, #75 in FY2024 and #57 in FY2025; down 12 since Jul 2024–Jun 2025.
72	The Trustees of the Stevens Institute of Technology Top agencies OSD (Office of the Secretary of Defense)	$24,472,400	0.2%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023, not on the FY2024 list and #76 in FY2025; up 207 since Jul 2024–Jun 2025.
73	Red Canyon Perikin JV, LLC Top agencies USAF (Department of the Air Force)	$24,028,264	0.2%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
74	O & A Technical Services LLC Top agencies DOT (Department of Transportation)	$23,893,891	0.2%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 253 since Jul 2024–Jun 2025.
75	Highbury Defense Group Through Accelint Mission Solutions, LLC Top agencies Navy (Department of the Navy)	$23,765,429	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023, #66 in FY2024 and #59 in FY2025; up 3 since Jul 2024–Jun 2025.
76	MG Facility Services, LLC Top agencies DOS (Department of State)	$23,688,425	0.2%	Rank history: not on the FY2021–FY2025 lists; up 134 since Jul 2024–Jun 2025.
77	Katmai North America LLC Top agencies Army (Department of the Army)	$23,657,210	0.2%	Rank history: not on the FY2021–FY2025 lists; up 257 since Jul 2024–Jun 2025.
78	Cape Fox Corporation 4 awardees, including Cape Fox Federal Integrators, LLC, Saxman One, LLC and Eagle Health, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHA (Defense Health Agency)	$23,283,552	0.2%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; up 17 since Jul 2024–Jun 2025.
79	22Nd Century Technologies, Inc. Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services) DODIG (Department of Defense Inspector General)	$23,163,145	0.2%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 78 since Jul 2024–Jun 2025.
80	G 2 Software Systems Inc. Top agencies Navy (Department of the Navy)	$22,890,612	0.2%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 4 since Jul 2024–Jun 2025.
81	HX5 LLC Top agencies NASA (National Aeronautics and Space Administration)	$22,525,194	0.2%	Rank history: not on the FY2021–FY2025 lists; up 225 since Jul 2024–Jun 2025.
82	National Marrow Donor Program Top agencies HHS (Department of Health and Human Services)	$22,105,504	0.2%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023, not on the FY2024 list and #87 in FY2025; up 15 since Jul 2024–Jun 2025.
83	Microtechnologies LLC Top agencies HUD (Department of Housing and Urban Development)	$21,878,353	0.2%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 347 since Jul 2024–Jun 2025.
84	Gap Solutions, Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$21,778,097	0.2%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and not on the FY2025 list; down 18 since Jul 2024–Jun 2025.
85	Centene Corporation Through Magellan Federal, Inc. Top agencies Army (Department of the Army)	$21,549,490	0.2%	Rank history: not on the FY2021 list, #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
86	SP Technologies, LLC Top agencies HUD (Department of Housing and Urban Development)	$21,421,110	0.2%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 158 since Jul 2024–Jun 2025.
87	NTT Data Federal Services Inc. Top agencies USAID (US Agency for International Development) DOJ (Department of Justice)	$21,411,973	0.2%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #26 in FY2025; down 72 since Jul 2024–Jun 2025.
88	Leidos Holdings, Inc. 7 awardees, including Leidos, Inc. Top agencies DHA (Defense Health Agency) DOT (Department of Transportation) USAF (Department of the Air Force)	$21,236,481	0.2%	Rank history: #31 in FY2021, #33 in FY2022, #27 in FY2023, #27 in FY2024 and #28 in FY2025; down 48 since Jul 2024–Jun 2025.
89	Great Hill Solutions, LLC Top agencies DOS (Department of State) DSCA (Defense Security Cooperation Agency) USAID (US Agency for International Development)	$21,044,504	0.2%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 52 since Jul 2024–Jun 2025.
90	Capitol Management Consulting Services, Inc. Top agencies HUD (Department of Housing and Urban Development)	$21,007,520	0.2%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; up 131 since Jul 2024–Jun 2025.
91	Ginkgo Bioworks Holdings Inc. Through Ginkgo Bioworks, Inc. Top agencies HHS (Department of Health and Human Services)	$20,999,984	0.2%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and not on the FY2025 list; down 54 since Jul 2024–Jun 2025.
92	Atlantic Diving Supply, Inc. Top agencies DOS (Department of State)	$20,666,561	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
93	Asgn Incorporated Through ECS Federal, LLC Top agencies Commerce (Department of Commerce) DHA (Defense Health Agency) Treasury (Department of the Treasury)	$20,270,685	0.2%	Rank history: not on the FY2021–FY2025 lists; up 98 since Jul 2024–Jun 2025.
94	Cyberstar LLC Top agencies Army (Department of the Army)	$19,906,573	0.2%	Rank history: not on the FY2021–FY2025 lists; up 168 since Jul 2024–Jun 2025.
95	Pact, Inc. Top agencies USAID (US Agency for International Development)	$19,617,368	0.2%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #63 in FY2024 and not on the FY2025 list; up 30 since Jul 2024–Jun 2025.
96	MLT Systems LLC Top agencies Navy (Department of the Navy)	$19,563,673	0.2%	Rank history: not on the FY2021–FY2025 lists; up 31 since Jul 2024–Jun 2025.
97	Koniag Data Solutions LLC Top agencies DOS (Department of State) DODIG (Department of Defense Inspector General) NARA (National Archives and Records Administration)	$19,335,441	0.2%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 24 since Jul 2024–Jun 2025.
98	Digital Cloak, LLC Top agencies Navy (Department of the Navy)	$19,192,828	0.2%	Rank history: not on the FY2021–FY2025 lists; up 154 since Jul 2024–Jun 2025.
99	Red River Resources LLC Top agencies Navy (Department of the Navy)	$18,944,176	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	Selene Finance LP Top agencies HUD (Department of Housing and Urban Development)	$18,930,254	0.2%	Rank history: #5 in FY2021, #43 in FY2022, not on the FY2023 list, #31 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.

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100 of 1,650 contractors listed here. See the rest on GovTribe.

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 $10.8 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 R408 contractors in Jul 2025–Jun 2026?

1. Booz Allen Hamilton Holding Corporation ($465M), 2. Deloitte ($355M), 3. Serco Inc ($298M), 4. Accenture Federal Services LLC ($225M), 5. Carrington Mortgage Services LLC ($224M), 6. Lockheed Martin Corporation ($206M), 7. The GEO Group, Inc. ($158M), 8. BAE Systems ($154M), 9. 360 Patriot Enterprises LLC ($130M), 10. CACI International Inc. ($124M).

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