Top 92 Contractors in NAICS 621512: Diagnostic Imaging Centers, Jul 2025–Jun 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Vetmed Group LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$30,103,674	25.3%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023, #3 in FY2024 and #2 in FY2025; up 1 since Jul 2024–Jun 2025.
2	Valor Network, Inc. Top agencies DHA (Defense Health Agency) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$19,522,070	16.4%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; down 1 since Jul 2024–Jun 2025.
3	Mystic Ventures Group LLC Top agencies VA (Department of Veterans Affairs)	$7,033,746	5.9%	Rank history: #3 in FY2021, #8 in FY2022, #5 in FY2023, #6 in FY2024 and #5 in FY2025; up 2 since Jul 2024–Jun 2025.
4	Government Imaging Services LLC Top agencies VA (Department of Veterans Affairs)	$5,886,914	4.9%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023, #4 in FY2024 and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
5	Inner Vision Radiology LLC Top agencies VA (Department of Veterans Affairs)	$5,392,073	4.5%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; up 5 since Jul 2024–Jun 2025.
6	Diagnostic Imaging Associates, Inc. Top agencies HHS (Department of Health and Human Services)	$4,574,293	3.8%	Rank history: #5 in FY2021, #4 in FY2022, #8 in FY2023, #5 in FY2024 and #6 in FY2025; up 2 since Jul 2024–Jun 2025.
7	Advanced Imaging Management LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,985,920	2.5%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #9 in FY2025; unchanged since Jul 2024–Jun 2025.
8	Redhawk Group International, LLC Top agencies VA (Department of Veterans Affairs)	$2,258,242	1.9%	Rank history: not on the FY2021 list, #7 in FY2022, #6 in FY2023, #17 in FY2024 and #7 in FY2025; down 2 since Jul 2024–Jun 2025.
9	All Valley Imaging, L.l.c Top agencies HHS (Department of Health and Human Services)	$2,162,512	1.8%	Rank history: #11 in FY2021, #12 in FY2022, #14 in FY2023, #14 in FY2024 and #17 in FY2025; up 5 since Jul 2024–Jun 2025.
10	White Mountain Radiology, P.L.L.C. Top agencies HHS (Department of Health and Human Services)	$1,669,468	1.4%	Rank history: #63 in FY2021, #52 in FY2022, #15 in FY2023, #15 in FY2024 and #13 in FY2025; up 2 since Jul 2024–Jun 2025.
11	Ibex It Business Experts LLC Top agencies DHA (Defense Health Agency)	$1,549,690	1.3%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023, #13 in FY2024 and #12 in FY2025; up 2 since Jul 2024–Jun 2025.
12	Prime Tri Providers LLC Top agencies VA (Department of Veterans Affairs)	$1,433,829	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
13	Maxmed Healthcare Inc. Top agencies DHA (Defense Health Agency)	$1,249,026	1.0%	Rank history: #14 in FY2021, #16 in FY2022, #23 in FY2023, #12 in FY2024 and #14 in FY2025; up 3 since Jul 2024–Jun 2025.
14	Shared Medical Services Inc. Top agencies VA (Department of Veterans Affairs)	$1,136,930	1.0%	Rank history: #31 in FY2021, #10 in FY2022, #7 in FY2023, #8 in FY2024 and #8 in FY2025; down 5 since Jul 2024–Jun 2025.
15	IS Healthcare LLC Top agencies VA (Department of Veterans Affairs)	$1,111,254	0.9%	Rank history: #10 in FY2021, #11 in FY2022, #18 in FY2023, #16 in FY2024 and #11 in FY2025; unchanged since Jul 2024–Jun 2025.
16	Med-Share Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$1,110,311	0.9%	Rank history: #20 in FY2021, #14 in FY2022, #16 in FY2023, #21 in FY2024 and #15 in FY2025; up 2 since Jul 2024–Jun 2025.
17	BTL Technologies, Inc. Top agencies VA (Department of Veterans Affairs)	$979,811	0.8%	Rank history: #17 in FY2021, not on the FY2022–FY2023 lists, #20 in FY2024 and #20 in FY2025; up 4 since Jul 2024–Jun 2025.
18	Insight Health Corp Top agencies VA (Department of Veterans Affairs)	$970,146	0.8%	Rank history: #16 in FY2021, not on the FY2022–FY2024 lists and #10 in FY2025; down 7 since Jul 2024–Jun 2025.
19	Rapid Temps, LLC Top agencies HHS (Department of Health and Human Services)	$874,496	0.7%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Jul 2024–Jun 2025.
20	DMS Imaging, Inc. Top agencies HHS (Department of Health and Human Services)	$628,670	0.5%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; up 8 since Jul 2024–Jun 2025.
21	Sasse Imaging, Inc. Top agencies HHS (Department of Health and Human Services)	$586,348	0.5%	Rank history: #71 in FY2021, not on the FY2022 list, #73 in FY2023, #64 in FY2024 and #27 in FY2025; up 41 since Jul 2024–Jun 2025.
22	Northland Healthcare Alliance Top agencies HHS (Department of Health and Human Services)	$535,700	0.5%	Rank history: #43 in FY2021, #35 in FY2022, #22 in FY2023, #27 in FY2024 and #22 in FY2025; down 2 since Jul 2024–Jun 2025.
23	Argent Arc LLC Top agencies VA (Department of Veterans Affairs)	$485,051	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
24	TSR Solutions LLC Top agencies HHS (Department of Health and Human Services)	$468,000	0.4%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
25	Louisiana State University Health Sciences Center New Orleans Top agencies VA (Department of Veterans Affairs)	$464,525	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
26	University of California San Diego Top agencies VA (Department of Veterans Affairs)	$450,000	0.4%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #24 in FY2025; down 3 since Jul 2024–Jun 2025.
27	Bronze Star Industries, Inc. Top agencies HHS (Department of Health and Human Services)	$444,000	0.4%	Rank history: #23 in FY2021, #21 in FY2022, #20 in FY2023, #25 in FY2024 and #54 in FY2025; down 3 since Jul 2024–Jun 2025.
28	Traversent Solutions Inc. Top agencies DOJ (Department of Justice)	$403,000	0.3%	Rank history: #37 in FY2021, #37 in FY2022, #27 in FY2023, #26 in FY2024 and #26 in FY2025; up 1 since Jul 2024–Jun 2025.
29	Assured Imaging Womens Wellness of Southern Arizona LLC Top agencies HHS (Department of Health and Human Services)	$392,946	0.3%	Rank history: #52 in FY2021, #34 in FY2022, #30 in FY2023, #22 in FY2024 and #38 in FY2025; down 4 since Jul 2024–Jun 2025.
30	Trinity Health Top agencies HHS (Department of Health and Human Services)	$386,319	0.3%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #46 in FY2025; down 3 since Jul 2024–Jun 2025.
31	Shared Medical Technology, LLC Top agencies HHS (Department of Health and Human Services)	$314,381	0.3%	Rank history: not on the FY2021 list, #25 in FY2022, #31 in FY2023, #28 in FY2024 and #23 in FY2025; down 5 since Jul 2024–Jun 2025.
32	University of Wisconsin System Top agencies HHS (Department of Health and Human Services)	$279,011	0.2%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; down 13 since Jul 2024–Jun 2025.
33	SCL Health - Montana Top agencies HHS (Department of Health and Human Services)	$269,150	0.2%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #41 in FY2025; up 3 since Jul 2024–Jun 2025.
34	Unique Mobile Diagnostic Services Inc. Top agencies DOJ (Department of Justice)	$263,367	0.2%	Rank history: #30 in FY2021, #44 in FY2022, #32 in FY2023, #43 in FY2024 and #25 in FY2025; down 3 since Jul 2024–Jun 2025.
35	Ultrasound Imaging Concepts LLC Top agencies DOJ (Department of Justice)	$261,800	0.2%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023, #31 in FY2024 and #30 in FY2025; up 4 since Jul 2024–Jun 2025.
36	Prairie Band Health Services Inc. Top agencies HHS (Department of Health and Human Services)	$260,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Kadaj Alliance L.L.C. Top agencies HHS (Department of Health and Human Services)	$238,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	Medispace Diagnostics Ltd Top agencies USAF (Department of the Air Force)	$230,947	0.2%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; down 1 since Jul 2024–Jun 2025.
39	S & S Life Scan Corp Top agencies DOJ (Department of Justice)	$225,406	0.2%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #58 in FY2025; up 44 since Jul 2024–Jun 2025.
40	Ausdanbrook Properties Inc Top agencies DHA (Defense Health Agency)	$216,636	0.2%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #33 in FY2024 and #29 in FY2025; down 10 since Jul 2024–Jun 2025.
41	A&B Technical LLC Top agencies HHS (Department of Health and Human Services)	$209,750	0.2%	Rank history: not on the FY2021 list, #26 in FY2022, not on the FY2023–FY2024 lists and #36 in FY2025; up 31 since Jul 2024–Jun 2025.
42	University of Hawaii Top agencies HHS (Department of Health and Human Services)	$204,624	0.2%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #28 in FY2025; down 9 since Jul 2024–Jun 2025.
43	Navix Diagnostix, Inc. Top agencies VA (Department of Veterans Affairs)	$196,068	0.2%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; down 5 since Jul 2024–Jun 2025.
44	Heart and Vascular Imaging Solutions L.L.C. Top agencies VA (Department of Veterans Affairs)	$189,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
45	Hologic, Inc. Top agencies VA (Department of Veterans Affairs)	$155,649	0.1%	Rank history: #98 in FY2021, #50 in FY2022, #34 in FY2023, #34 in FY2024 and #42 in FY2025; up 35 since Jul 2024–Jun 2025.
46	Chesapeake Open Mri, LLC Top agencies HHS (Department of Health and Human Services)	$151,400	0.1%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, #32 in FY2024 and #47 in FY2025; down 14 since Jul 2024–Jun 2025.
47	Unimed S.R.L. Top agencies DHA (Defense Health Agency)	$149,524	0.1%	Rank history: #41 in FY2021, #42 in FY2022, #49 in FY2023, #41 in FY2024 and #48 in FY2025; down 6 since Jul 2024–Jun 2025.
48	Aikens Powerful and Elite Solutions, LLC Top agencies DHA (Defense Health Agency)	$142,538	0.1%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; down 5 since Jul 2024–Jun 2025.
49	General Electric Company Through GE Precision Healthcare LLC Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$134,453	0.1%	Rank history: #48 in FY2021, #54 in FY2022, #37 in FY2023, #40 in FY2024 and #40 in FY2025; up 2 since Jul 2024–Jun 2025.
50	A-Bear Consult LLC Top agencies VA (Department of Veterans Affairs)	$133,821	0.1%	Rank history: #68 in FY2021, #60 in FY2022, #48 in FY2023, #39 in FY2024 and #37 in FY2025; down 10 since Jul 2024–Jun 2025.
51	Bgesh Incorporated Top agencies HHS (Department of Health and Human Services)	$120,000	0.1%	Rank history: not on the FY2021–FY2023 lists, #76 in FY2024 and #57 in FY2025; down 1 since Jul 2024–Jun 2025.
52	Sonoaid Imaging, Inc. Top agencies DOJ (Department of Justice)	$104,400	0.1%	Rank history: #75 in FY2021, #80 in FY2022, #79 in FY2023, #58 in FY2024 and #61 in FY2025; up 9 since Jul 2024–Jun 2025.
53	Agiliti Health Inc Top agencies VA (Department of Veterans Affairs)	$97,945	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
54	Mansa Medical LLC Top agencies DOJ (Department of Justice)	$90,133	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 22 since Jul 2024–Jun 2025.
55	The Vanderbilt University Top agencies HHS (Department of Health and Human Services)	$76,895	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Jul 2024–Jun 2025.
56	Symphony Diagnostic Services NO. 1, LLC Top agencies DOJ (Department of Justice) DHA (Defense Health Agency)	$75,494	0.1%	Rank history: not on the FY2021–FY2023 lists, #59 in FY2024 and #50 in FY2025; down 7 since Jul 2024–Jun 2025.
57	Alko Enterprises Inc. Top agencies HHS (Department of Health and Human Services)	$69,541	0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Jul 2024–Jun 2025.
58	Cardiovascular Imaging Services, Inc. Top agencies VA (Department of Veterans Affairs)	$64,511	0.1%	Rank history: not on the FY2021 list, #58 in FY2022, #52 in FY2023, #65 in FY2024 and #64 in FY2025; up 8 since Jul 2024–Jun 2025.
59	Edger Associates, Inc. Top agencies VA (Department of Veterans Affairs)	$60,798	0.1%	Rank history: #85 in FY2021, #91 in FY2022, #75 in FY2023, #70 in FY2024 and #66 in FY2025; down 2 since Jul 2024–Jun 2025.
60	Shared Imaging LLC Top agencies VA (Department of Veterans Affairs)	$60,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; down 15 since Jul 2024–Jun 2025.
61	Seven Corners Inc. Top agencies DOJ (Department of Justice)	$58,954	<0.1%	Rank history: not on the FY2021–FY2023 lists, #88 in FY2024 and not on the FY2025 list; up 27 since Jul 2024–Jun 2025.
62	Tech62 Inc. Top agencies VA (Department of Veterans Affairs)	$58,700	<0.1%	Rank history: not on the FY2021 list, #72 in FY2022, #77 in FY2023, #67 in FY2024 and #67 in FY2025; down 2 since Jul 2024–Jun 2025.
63	NOX Health Group, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$58,387	<0.1%	Rank history: not on the FY2021 list, #95 in FY2022, not on the FY2023 list, #78 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
64	Nuvasive Inc. Through Nuvasive Clinical Services Monitoring, Inc. Top agencies VA (Department of Veterans Affairs)	$55,329	<0.1%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
65	Virtual Radiologic Professionals of Texas I, Pa Top agencies HHS (Department of Health and Human Services)	$55,179	<0.1%	Rank history: #70 in FY2021, not on the FY2022–FY2024 lists and #49 in FY2025; down 9 since Jul 2024–Jun 2025.
66	United Trinity Investment Group, LLC Top agencies HHS (Department of Health and Human Services)	$54,984	<0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023, #54 in FY2024 and #60 in FY2025; down 19 since Jul 2024–Jun 2025.
67	Astute Imaging LLC Top agencies VA (Department of Veterans Affairs)	$50,993	<0.1%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #98 in FY2025; up 14 since Jul 2024–Jun 2025.
68	Salem Radiology Consultants PC Top agencies HHS (Department of Health and Human Services)	$50,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
69	Evident Scientific Mis, Inc. Top agencies DHS (Department of Homeland Security)	$49,898	<0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
70	Ischemaview, Inc. Top agencies VA (Department of Veterans Affairs)	$42,120	<0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023, #69 in FY2024 and #72 in FY2025; down 1 since Jul 2024–Jun 2025.
71	Danaher Corporation Through Cepheid Top agencies VA (Department of Veterans Affairs)	$41,768	<0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; down 1 since Jul 2024–Jun 2025.
72	Jennifer Longoria Top agencies DHA (Defense Health Agency)	$41,600	<0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; new, not ranked in Jul 2024–Jun 2025.
73	Soundwave Imaging, Inc. Top agencies DOJ (Department of Justice)	$40,410	<0.1%	Rank history: #93 in FY2021, #74 in FY2022, #57 in FY2023, #62 in FY2024 and #71 in FY2025; down 6 since Jul 2024–Jun 2025.
74	Icy Bones, LLC Top agencies HHS (Department of Health and Human Services)	$38,839	<0.1%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Radnet, Inc. Top agencies DHA (Defense Health Agency)	$38,000	<0.1%	Rank history: not on the FY2021–FY2023 lists, #91 in FY2024 and #83 in FY2025; up 4 since Jul 2024–Jun 2025.
76	James Valley Imaging Limited Top agencies HHS (Department of Health and Human Services)	$37,530	<0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	Cenmed Enterprises Inc. Top agencies WHS (DOD Washington Headquarters Service)	$34,380	<0.1%	Rank history: not on the FY2021 list, #83 in FY2022, #84 in FY2023, #71 in FY2024 and #78 in FY2025; down 3 since Jul 2024–Jun 2025.
78	Nikon Americas Inc. Through Nikon Metrology, LLC Top agencies USAF (Department of the Air Force)	$31,500	<0.1%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; new, not ranked in Jul 2024–Jun 2025.
79	Medical Access Uganda Limited Top agencies DOS (Department of State)	$29,006	<0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Jul 2024–Jun 2025.
80	DGA Medical LLC Top agencies VA (Department of Veterans Affairs)	$28,198	<0.1%	Rank history: #62 in FY2021, not on the FY2022–FY2024 lists and #84 in FY2025; new, not ranked in Jul 2024–Jun 2025.
81	Bamajack, LLC Top agencies VA (Department of Veterans Affairs)	$24,990	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Carson Staffing Solutions LLC Top agencies HHS (Department of Health and Human Services)	$15,945	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
83	American Correctional Healthcare, Inc. Top agencies DOJ (Department of Justice)	$15,630	<0.1%	Rank history: #61 in FY2021, #56 in FY2022, #60 in FY2023, #56 in FY2024 and #85 in FY2025; down 1 since Jul 2024–Jun 2025.
84	Globus Medical, Inc. Through Nuvasive Clinical Services Monitoring, Inc. Top agencies VA (Department of Veterans Affairs)	$12,823	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
85	Altamont Software, Inc. Top agencies HHS (Department of Health and Human Services)	$12,350	<0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; new, not ranked in Jul 2024–Jun 2025.
86	Healthtronics Stone Solutions, LLC Top agencies VA (Department of Veterans Affairs)	$11,600	<0.1%	Rank history: #32 in FY2021, #33 in FY2022, #78 in FY2023, not on the FY2024 list and #88 in FY2025; new, not ranked in Jul 2024–Jun 2025.
87	Neosoft, LLC Top agencies VA (Department of Veterans Affairs)	$9,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, #92 in FY2024 and #94 in FY2025; up 2 since Jul 2024–Jun 2025.
88	Park Nicollet Clinic Top agencies DOJ (Department of Justice)	$8,560	<0.1%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #86 in FY2025; down 4 since Jul 2024–Jun 2025.
89	Northern Montana Hospital Top agencies HHS (Department of Health and Human Services)	$7,530	<0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 2 since Jul 2024–Jun 2025.
90	Sound Diagnostics of Northwest Florida, LLC Top agencies DOJ (Department of Justice)	$7,500	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
91	The Saratoga Hospital Top agencies DHA (Defense Health Agency)	$6,740	<0.1%	Rank history: #67 in FY2021, not on the FY2022 list, #82 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
92	Raysearch Americas Inc. Top agencies VA (Department of Veterans Affairs)	$5,420	<0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; new, not ranked in Jul 2024–Jun 2025.

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 $119 million 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