Top 100 Contractors in PSC AN11: Health R&D Services; Health Care Services; Basic Research, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Icon Government and Public Health Solutions Inc. Top agencies HHS (Department of Health and Human Services)	$358,067,750	18.6%	Rank history: #5 in FY2021, #16 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
2	Allucent Government Services (Us) LLC Top agencies HHS (Department of Health and Human Services)	$343,325,920	17.8%	Rank history: #3 in FY2021, not on the FY2022 list, #32 in FY2024 and not on the FY2025 list; up 257 since FY2022.
3	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$318,576,605	16.5%	Rank history: #10 in FY2021, #11 in FY2022, #3 in FY2024 and #7 in FY2025; up 8 since FY2022.
4	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$88,988,837	4.6%	Rank history: #67 in FY2021, #74 in FY2022, #87 in FY2024 and not on the FY2025 list; up 70 since FY2022.
5	RHO Inc. Through Rho Federal Systems Division Inc. Top agencies HHS (Department of Health and Human Services)	$79,687,656	4.1%	Rank history: not on the FY2021 list, #22 in FY2022, #46 in FY2024 and not on the FY2025 list; up 17 since FY2022.
6	VIR Biotechnology, Inc. Top agencies HHS (Department of Health and Human Services)	$61,300,400	3.2%	Rank history: not on the FY2021 list, #4 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
7	Modernatx Inc. Top agencies HHS (Department of Health and Human Services)	$47,744,136	2.5%	Rank history: #1 in FY2021, #1 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
8	Westat, Inc. Top agencies HHS (Department of Health and Human Services)	$37,056,671	1.9%	Rank history: #2 in FY2021, #2 in FY2022, #1 in FY2024 and #2 in FY2025; down 6 since FY2022.
9	Deloitte LLP Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$36,893,044	1.9%	Rank history: not on the FY2021 list, #75 in FY2022 and not on the FY2024–FY2025 lists; up 66 since FY2022.
10	Attucks It Solutions LLC Through Abss Solutions Inc. Top agencies USAF (Department of the Air Force)	$32,752,023	1.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
11	Indivior Inc. Top agencies HHS (Department of Health and Human Services)	$32,379,816	1.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
12	The Emmes Company, LLC Top agencies HHS (Department of Health and Human Services)	$22,328,137	1.2%	Rank history: #6 in FY2021, #6 in FY2022, #4 in FY2024 and #5 in FY2025; down 6 since FY2022.
13	Kaiser Foundation Health Plan of Washington 2 awardees, including Kaiser Foundation Hospitals Top agencies HHS (Department of Health and Human Services)	$19,808,354	1.0%	Rank history: #8 in FY2021, #8 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
14	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services)	$14,157,153	0.7%	Rank history: #27 in FY2021, #14 in FY2022, #7 in FY2024 and #14 in FY2025; unchanged since FY2022.
15	Charles River Laboratories International Inc. Through Charles River Laboratories, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$13,122,483	0.7%	Rank history: #15 in FY2021, #13 in FY2022, #9 in FY2024 and #4 in FY2025; down 2 since FY2022.
16	Sri International Top agencies HHS (Department of Health and Human Services)	$12,558,604	0.7%	Rank history: #16 in FY2021, #12 in FY2022, #18 in FY2024 and not on the FY2025 list; down 4 since FY2022.
17	The Broad Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$11,987,833	0.6%	Rank history: not on the FY2021 list, #54 in FY2022, #15 in FY2024 and #15 in FY2025; up 37 since FY2022.
18	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies USUHS (DOD Uniformed Services University of the Health Sciences) Army (Department of the Army) DHA (Defense Health Agency)	$11,981,173	0.6%	Rank history: not on the FY2021 list, #19 in FY2022, #6 in FY2024 and #16 in FY2025; up 1 since FY2022.
19	State of California Controllers Office 6 awardees, including University of California Irvine, University of California, San Diego and The Regents of the University of California. San Francisco Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$9,421,195	0.5%	Rank history: #26 in FY2021, #24 in FY2022, #61 in FY2024 and not on the FY2025 list; up 5 since FY2022.
20	New York Genome Center, Inc. Top agencies HHS (Department of Health and Human Services)	$8,965,760	0.5%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2024 and #12 in FY2025; new.
21	Precision Bioservices Inc. Through Precision for Medicine, Inc. Top agencies HHS (Department of Health and Human Services)	$8,398,731	0.4%	Rank history: #32 in FY2021, #37 in FY2022 and not on the FY2024–FY2025 lists; up 16 since FY2022.
22	Nanobiosym Inc Top agencies HHS (Department of Health and Human Services)	$8,100,000	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$7,769,518	0.4%	Rank history: #17 in FY2021, #30 in FY2022, #24 in FY2024 and #29 in FY2025; up 7 since FY2022.
24	Duke University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$7,215,339	0.4%	Rank history: #47 in FY2021, #23 in FY2022, #36 in FY2024 and #17 in FY2025; down 1 since FY2022.
25	University of Pittsburgh - of the Commonwealth System of Higher Education Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$7,043,981	0.4%	Rank history: #20 in FY2021, #57 in FY2022, #72 in FY2024 and #67 in FY2025; up 32 since FY2022.
26	The University of Queens Through Vaxxas PTY Ltd Top agencies HHS (Department of Health and Human Services)	$6,801,291	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
27	Trustees of Boston University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,700,941	0.3%	Rank history: not on the FY2021 list, #58 in FY2022 and not on the FY2024–FY2025 lists; up 31 since FY2022.
28	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,488,477	0.3%	Rank history: #52 in FY2021, #25 in FY2022, #25 in FY2024 and #28 in FY2025; down 3 since FY2022.
29	Seattle Children'S Hospital Top agencies HHS (Department of Health and Human Services)	$6,385,437	0.3%	Rank history: not on the FY2021 list, #38 in FY2022, #22 in FY2024 and not on the FY2025 list; up 9 since FY2022.
30	The Leland Stanford Junior University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,276,717	0.3%	Rank history: not on the FY2021 list, #60 in FY2022, #13 in FY2024 and #37 in FY2025; up 30 since FY2022.
31	Northwestern University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,245,331	0.3%	Rank history: not on the FY2021 list, #28 in FY2022, #23 in FY2024 and #25 in FY2025; down 3 since FY2022.
32	Alpha Genesis Inc. Top agencies HHS (Department of Health and Human Services)	$6,016,799	0.3%	Rank history: #36 in FY2021, #39 in FY2022, #12 in FY2024 and #13 in FY2025; up 7 since FY2022.
33	University of Utah Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$5,996,211	0.3%	Rank history: not on the FY2021 list, #48 in FY2022, #19 in FY2024 and #20 in FY2025; up 15 since FY2022.
34	Safe Health Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$5,876,431	0.3%	Rank history: not on the FY2021 list, #53 in FY2022 and not on the FY2024–FY2025 lists; up 19 since FY2022.
35	Thermo Electron Corporation 3 awardees, including Fisher Bioservices Inc. and Life Technologies Corporation Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$5,731,733	0.3%	Rank history: not on the FY2021 list, #26 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
36	Zata Pharmaceuticals Inc. Top agencies HHS (Department of Health and Human Services)	$5,476,220	0.3%	Rank history: not on the FY2021 list, #40 in FY2022 and not on the FY2024–FY2025 lists; up 4 since FY2022.
37	The Research Foundation for the State University of New York 3 awardees Top agencies HHS (Department of Health and Human Services)	$5,331,763	0.3%	Rank history: not on the FY2021 list, #81 in FY2022, #55 in FY2024 and #40 in FY2025; up 44 since FY2022.
38	Brigham & Womens Hospital Inc 3 awardees, including The Mclean Hospital Corporation and The General Hospital Corporation Top agencies HHS (Department of Health and Human Services)	$5,217,859	0.3%	Rank history: #31 in FY2021, #17 in FY2022, #74 in FY2024 and #72 in FY2025; down 21 since FY2022.
39	Spero Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$4,987,205	0.3%	Rank history: #62 in FY2021, not on the FY2022 list, #33 in FY2024 and not on the FY2025 list; returned.
40	University System of Maryland 2 awardees, including University of Maryland, Baltimore Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,356,781	0.2%	Rank history: #19 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; down 20 since FY2022.
41	Bioinfoexperts LLC Top agencies HHS (Department of Health and Human Services)	$4,283,031	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
42	Icahn School of Medicine at Mount Sinai Top agencies HHS (Department of Health and Human Services)	$4,259,283	0.2%	Rank history: #39 in FY2021, #50 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
43	University of Oklahoma Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,111,717	0.2%	Rank history: #46 in FY2021, #71 in FY2022, #27 in FY2024 and not on the FY2025 list; up 28 since FY2022.
44	University of Washington 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$3,981,470	0.2%	Rank history: #29 in FY2021, #61 in FY2022, #35 in FY2024 and #97 in FY2025; up 17 since FY2022.
45	Hexamer Therapeutics Inc. Top agencies DHA (Defense Health Agency)	$3,928,061	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	Inbios International Inc. Top agencies HHS (Department of Health and Human Services)	$3,894,468	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
47	University of Sydney Top agencies HHS (Department of Health and Human Services)	$3,844,310	0.2%	Rank history: not on the FY2021 list, #63 in FY2022, #37 in FY2024 and #47 in FY2025; up 16 since FY2022.
48	The Administrators of Tulane Educational Fund Top agencies HHS (Department of Health and Human Services)	$3,351,190	0.2%	Rank history: #30 in FY2021, #36 in FY2022, #97 in FY2024 and #27 in FY2025; down 12 since FY2022.
49	Coriell Institute for Medical Research, Inc. Top agencies HHS (Department of Health and Human Services)	$3,268,509	0.2%	Rank history: #49 in FY2021, #64 in FY2022, #60 in FY2024 and #66 in FY2025; up 15 since FY2022.
50	La Jolla Institute for Immunology Top agencies HHS (Department of Health and Human Services)	$3,209,450	0.2%	Rank history: #44 in FY2021, #46 in FY2022, #30 in FY2024 and #31 in FY2025; down 4 since FY2022.
51	National Academy of Sciences Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DHA (Defense Health Agency)	$3,174,584	0.2%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2024 and #32 in FY2025; up 65 since FY2022.
52	Emory University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,967,705	0.2%	Rank history: #42 in FY2021, #44 in FY2022, #40 in FY2024 and #35 in FY2025; down 8 since FY2022.
53	Luna Innovations Incorporated 2 awardees, including Luna Labs USA LLC Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) Army (Department of the Army)	$2,814,285	0.1%	Rank history: #37 in FY2021, #97 in FY2022 and not on the FY2024–FY2025 lists; up 44 since FY2022.
54	Rutgers, the State University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,723,549	0.1%	Rank history: #34 in FY2021, #43 in FY2022, #41 in FY2024 and #73 in FY2025; down 11 since FY2022.
55	Lovelace Biomedical Research Institute Top agencies HHS (Department of Health and Human Services)	$2,693,411	0.1%	Rank history: #33 in FY2021, #52 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
56	University of North Carolina at Chapel Hill 2 awardees Top agencies HHS (Department of Health and Human Services)	$2,547,335	0.1%	Rank history: #38 in FY2021, #10 in FY2022 and not on the FY2024–FY2025 lists; down 46 since FY2022.
57	The University of Mississippi Top agencies HHS (Department of Health and Human Services)	$2,506,110	0.1%	Rank history: #51 in FY2021, #70 in FY2022, #57 in FY2024 and not on the FY2025 list; up 13 since FY2022.
58	College of American Pathologists Top agencies HHS (Department of Health and Human Services)	$2,470,545	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 90 since FY2022.
59	Odyssey Systems Consulting Group, Ltd. Top agencies DHA (Defense Health Agency)	$2,380,448	0.1%	Rank history: not on the FY2021 list, #59 in FY2022, #53 in FY2024 and #74 in FY2025; unchanged since FY2022.
60	Pro-Change Behavior Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$2,361,627	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 83 since FY2022.
61	Information Management Services, Inc. Top agencies HHS (Department of Health and Human Services)	$2,361,424	0.1%	Rank history: #74 in FY2021, #95 in FY2022, #43 in FY2024 and #42 in FY2025; up 34 since FY2022.
62	Utah State University Top agencies HHS (Department of Health and Human Services)	$2,314,470	0.1%	Rank history: #25 in FY2021, #35 in FY2022, #42 in FY2024 and #87 in FY2025; down 27 since FY2022.
63	Path-Tec LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$2,258,347	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
64	Virginia Commonwealth University Top agencies HHS (Department of Health and Human Services)	$2,234,510	0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2024 and #55 in FY2025; new.
65	Battelle Memorial Institute 2 awardees Top agencies HHS (Department of Health and Human Services)	$2,231,476	0.1%	Rank history: #23 in FY2021, not on the FY2022 list, #88 in FY2024 and #54 in FY2025; up 39 since FY2022.
66	University of Montana System Through University of Montana Top agencies HHS (Department of Health and Human Services)	$2,223,031	0.1%	Rank history: #21 in FY2021, #21 in FY2022 and not on the FY2024–FY2025 lists; down 45 since FY2022.
67	Physical Sciences Inc. Top agencies Army (Department of the Army)	$2,198,523	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 62 since FY2022.
68	Olifant Medical, Inc. Top agencies Army (Department of the Army)	$2,192,930	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 159 since FY2022.
69	Technology Management Company, Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$2,111,359	0.1%	Rank history: #76 in FY2021, #96 in FY2022, #48 in FY2024 and not on the FY2025 list; up 27 since FY2022.
70	Oregon Health & Science University Top agencies HHS (Department of Health and Human Services)	$2,091,487	0.1%	Rank history: #55 in FY2021, #78 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
71	University of Texas System 4 awardees, including University of Texas Medical Branch At Galveston and The University of Texas Health Science Center At San Antonio Top agencies HHS (Department of Health and Human Services)	$1,946,466	0.1%	Rank history: #28 in FY2021, #33 in FY2022 and not on the FY2024–FY2025 lists; down 38 since FY2022.
72	Synensys, LLC Top agencies HHS (Department of Health and Human Services)	$1,893,507	0.1%	Rank history: not on the FY2021 list, #94 in FY2022 and not on the FY2024–FY2025 lists; up 22 since FY2022.
73	CFD Research Corporation Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$1,889,698	0.1%	Rank history: #45 in FY2021, #72 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
74	Altasciences Clinical Kansas Inc. Top agencies HHS (Department of Health and Human Services)	$1,838,615	0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2024 and not on the FY2025 list; new.
75	Cherokee Nation Through Cherokee Federal Solutions, L.L.C. Top agencies DOT (Department of Transportation)	$1,784,158	0.1%	Rank history: #59 in FY2021, #87 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
76	University of Miami Top agencies HHS (Department of Health and Human Services)	$1,772,191	0.1%	Rank history: #66 in FY2021, #99 in FY2022 and not on the FY2024–FY2025 lists; up 23 since FY2022.
77	Children's Hospital LOS Angeles Top agencies HHS (Department of Health and Human Services)	$1,715,877	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 103 since FY2022.
78	Critical Innovations LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$1,691,336	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2024 and not on the FY2025 list; up 83 since FY2022.
79	University of Wisconsin System 3 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,656,201	0.1%	Rank history: #71 in FY2021, #88 in FY2022, #58 in FY2024 and not on the FY2025 list; up 9 since FY2022.
80	Integrated Biotherapeutics, LLC Top agencies HHS (Department of Health and Human Services)	$1,626,773	0.1%	Rank history: #70 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
81	Mriglobal Top agencies HHS (Department of Health and Human Services)	$1,578,677	0.1%	Rank history: #79 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 31 since FY2022.
82	The Mclean Hospital Corporation Top agencies HHS (Department of Health and Human Services)	$1,557,246	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Embleema Inc. Top agencies HHS (Department of Health and Human Services)	$1,500,000	0.1%	Rank history: #64 in FY2021, #56 in FY2022, #54 in FY2024 and #79 in FY2025; down 27 since FY2022.
84	Greater LOS Angeles Veterans Research and Education Foundation Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$1,489,329	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2024 and #75 in FY2025; up 31 since FY2022.
85	Eurofins EAG Agroscience LLC Through Pharmacology Discovery Services Taiwan, Ltd. Top agencies HHS (Department of Health and Human Services)	$1,476,647	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	American Foundation for Biological Research Top agencies HHS (Department of Health and Human Services)	$1,459,887	0.1%	Rank history: #97 in FY2021, not on the FY2022 list, #62 in FY2024 and #51 in FY2025; up 23 since FY2022.
87	Creare LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency)	$1,455,678	0.1%	Rank history: #58 in FY2021, #93 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
88	The University of Chicago Top agencies HHS (Department of Health and Human Services)	$1,434,134	0.1%	Rank history: #65 in FY2021, not on the FY2022 list, #91 in FY2024 and not on the FY2025 list; up 20 since FY2022.
89	Massachusetts Institute of Technology Top agencies HHS (Department of Health and Human Services)	$1,426,640	0.1%	Rank history: #13 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
90	Illinois Institute of Technology Through IIT Research Institute Top agencies HHS (Department of Health and Human Services)	$1,403,931	0.1%	Rank history: #68 in FY2021, #55 in FY2022 and not on the FY2024–FY2025 lists; down 35 since FY2022.
91	Triton Systems, Inc. Top agencies Army (Department of the Army)	$1,349,326	0.1%	Rank history: #18 in FY2021, #68 in FY2022, not on the FY2024 list and #90 in FY2025; down 23 since FY2022.
92	The Children's Hospital Corporation Top agencies HHS (Department of Health and Human Services)	$1,345,426	0.1%	Rank history: #12 in FY2021, #34 in FY2022 and not on the FY2024–FY2025 lists; down 58 since FY2022.
93	University of Georgia Research Foundation, Inc. Top agencies HHS (Department of Health and Human Services)	$1,320,578	0.1%	Rank history: #57 in FY2021, not on the FY2022 list, #81 in FY2024 and #57 in FY2025; up 20 since FY2022.
94	Kericure Inc. Top agencies Army (Department of the Army)	$1,299,857	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 152 since FY2022.
95	Sharp Vision Software LLC Top agencies DHA (Defense Health Agency)	$1,299,603	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	Real-Time Analyzers Inc. Top agencies DHA (Defense Health Agency)	$1,299,212	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Cherokee Nation Defense Solutions LLC Top agencies DOT (Department of Transportation)	$1,298,727	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	Laulima Government Solutions, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$1,234,560	0.1%	Rank history: #56 in FY2021, #73 in FY2022, #56 in FY2024 and #61 in FY2025; down 25 since FY2022.
99	Missouri Breaks Industries Research, Inc. Top agencies HHS (Department of Health and Human Services)	$1,233,970	0.1%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2024 and #83 in FY2025; up 57 since FY2022.
100	Sim-Vivo LLC Top agencies Army (Department of the Army)	$1,220,951	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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 $1.93 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