Top 100 Contractors in PSC R420: Support – Professional: Certifications and Accreditations (Other Than Education or Information Technology C&A), FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Joint Commission On Accreditation of Healthcare Organizations Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$15,641,847	24.7%	Rank history: #2 in FY2021, #1 in FY2022, #2 in FY2024 and #1 in FY2025; unchanged since FY2022.
2	American Heart Association, Inc. Top agencies VA (Department of Veterans Affairs)	$8,502,511	13.4%	Rank history: #3 in FY2021, #11 in FY2022, not on the FY2024 list and #4 in FY2025; up 9 since FY2022.
3	National Committee for Quality Assurance Top agencies HHS (Department of Health and Human Services)	$5,283,761	8.3%	Rank history: not on the FY2021 list, #5 in FY2022, #3 in FY2024 and #3 in FY2025; up 2 since FY2022.
4	College of American Pathologists Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$5,262,211	8.3%	Rank history: #4 in FY2021, #3 in FY2022, #4 in FY2024 and #2 in FY2025; down 1 since FY2022.
5	Carahsoft Technology Corp Top agencies USAID (US Agency for International Development)	$4,842,773	7.7%	Rank history: #7 in FY2021, #4 in FY2022, #69 in FY2024 and not on the FY2025 list; down 1 since FY2022.
6	Tetrad Digital Integrity LLC Top agencies Navy (Department of the Navy)	$2,393,598	3.8%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2024 and #6 in FY2025; new.
7	American College of Surgeons Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Army (Department of the Army)	$1,767,423	2.8%	Rank history: #8 in FY2021, #10 in FY2022, #53 in FY2024 and #11 in FY2025; up 3 since FY2022.
8	Commission On Accreditation of Rehabilitation Facilities Top agencies VA (Department of Veterans Affairs)	$1,423,314	2.2%	Rank history: #5 in FY2021, #7 in FY2022, #5 in FY2024 and #7 in FY2025; down 1 since FY2022.
9	DJ Business Solutions LLC Top agencies HUD (Department of Housing and Urban Development)	$1,220,845	1.9%	Rank history: #11 in FY2021, #14 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
10	Global Skills Exchange Corporation Top agencies DCSA (Defense Counterintelligence and Security Agency)	$1,206,709	1.9%	Rank history: #9 in FY2021, #12 in FY2022, #12 in FY2024 and not on the FY2025 list; up 2 since FY2022.
11	Old Harbor Solutions LLC Top agencies DHS (Department of Homeland Security)	$1,022,868	1.6%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2024 and #9 in FY2025; new.
12	American Association of Blood Banks, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,013,734	1.6%	Rank history: #14 in FY2021, #15 in FY2022, #10 in FY2024 and #12 in FY2025; up 3 since FY2022.
13	Kearney & Company, P.C. Top agencies MCC (Millennium Challenge Corporation)	$722,566	1.1%	Rank history: #15 in FY2021, #16 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
14	Amentum Services, Inc. Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy)	$710,230	1.1%	Rank history: #1 in FY2021, #2 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
15	Accreditation Association for Ambulatory Health Care, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$500,312	0.8%	Rank history: #12 in FY2021, #13 in FY2022, #11 in FY2024 and #14 in FY2025; down 2 since FY2022.
16	Center for Public Safety Excellence, Inc. Top agencies Navy (Department of the Navy)	$492,415	0.8%	Rank history: #17 in FY2021, #18 in FY2022, #20 in FY2024 and #16 in FY2025; up 2 since FY2022.
17	The National Registry of Emergency Medical Technicians Inc. Top agencies Army (Department of the Army)	$407,884	0.6%	Rank history: #23 in FY2021, #23 in FY2022, #15 in FY2024 and #18 in FY2025; up 6 since FY2022.
18	Solutions for Information Design, Inc. Top agencies USAF (Department of the Air Force)	$399,896	0.6%	Rank history: #21 in FY2021, #25 in FY2022, #16 in FY2024 and #19 in FY2025; up 7 since FY2022.
19	Cliftonlarsonallen LLP Top agencies AbilityOne	$394,351	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
20	Global Strategic Energy LLC Top agencies USAF (Department of the Air Force)	$371,631	0.6%	Rank history: #20 in FY2021, #27 in FY2022, #18 in FY2024 and #21 in FY2025; up 7 since FY2022.
21	Ansi National Accreditation Board LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) DHA (Defense Health Agency)	$360,866	0.6%	Rank history: #22 in FY2021, #19 in FY2022, #14 in FY2024 and #17 in FY2025; down 2 since FY2022.
22	The American Correctional Association Top agencies HHS (Department of Health and Human Services) DOS (Department of State) Army (Department of the Army)	$334,451	0.5%	Rank history: #50 in FY2021, #22 in FY2022, #49 in FY2024 and #39 in FY2025; unchanged since FY2022.
23	OMNI2MAX Inc. Top agencies Navy (Department of the Navy)	$322,305	0.5%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2024 and not on the FY2025 list; new.
24	Healthcare Quality Assistance Group, LLC Top agencies VA (Department of Veterans Affairs)	$286,771	0.5%	Rank history: not on the FY2021 list, #49 in FY2022, #25 in FY2024 and not on the FY2025 list; up 25 since FY2022.
25	National Test Pilot School Inc. Top agencies Army (Department of the Army)	$275,000	0.4%	Rank history: #24 in FY2021, #17 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
26	Practising Law Institute Top agencies SEC (Securities and Exchange Commission)	$258,580	0.4%	Rank history: #26 in FY2021, #28 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
27	American Association for Laboratory Accreditation, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) EPA (Environmental Protection Agency)	$247,486	0.4%	Rank history: #28 in FY2021, #60 in FY2022, #23 in FY2024 and #22 in FY2025; up 33 since FY2022.
28	Blue Yonder Inc. Top agencies Navy (Department of the Navy)	$222,228	0.4%	Rank history: #27 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
29	Nippon Telegraph and Telephone Corporation Through NTT Data Federal Services, Inc. Top agencies DHS (Department of Homeland Security)	$197,029	0.3%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2024 and not on the FY2025 list; new.
30	San Diego Community College District Top agencies Navy (Department of the Navy)	$188,090	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
31	Hoolaulima Government Solutions, LLC Top agencies DHA (Defense Health Agency)	$186,037	0.3%	Rank history: not on the FY2021 list, #36 in FY2022, #29 in FY2024 and #25 in FY2025; up 5 since FY2022.
32	American Bureau of Shipping Top agencies Army (Department of the Army)	$179,513	0.3%	Rank history: #31 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
33	Data2Design Technologies LLC Top agencies USAF (Department of the Air Force)	$167,726	0.3%	Rank history: #35 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
34	American Institute of Certified Public Accountants Top agencies SEC (Securities and Exchange Commission)	$162,392	0.3%	Rank history: #38 in FY2021, #40 in FY2022 and not on the FY2024–FY2025 lists; up 6 since FY2022.
35	Relx Inc Through Elsevier Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$162,209	0.3%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2024 and not on the FY2025 list; new.
36	Eagle Force, Inc. Top agencies Army (Department of the Army)	$156,000	0.2%	Rank history: #42 in FY2021, #63 in FY2022, #35 in FY2024 and #54 in FY2025; up 27 since FY2022.
37	Amtivo (USA) Inc. Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury) DOS (Department of State)	$154,640	0.2%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2024 and #32 in FY2025; new.
38	University of North Carolina at Chapel Hill Through University of North Carolina At Charlotte Top agencies DHA (Defense Health Agency)	$150,000	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	American Society for Radiation Oncology Top agencies VA (Department of Veterans Affairs)	$144,500	0.2%	Rank history: #40 in FY2021, #51 in FY2022, #40 in FY2024 and #29 in FY2025; up 12 since FY2022.
40	All Environmental Compliance Inc. Top agencies DOJ (Department of Justice)	$139,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2024 and #28 in FY2025; new.
41	Accreditation Council for Graduate Medical Education Top agencies DHA (Defense Health Agency)	$136,170	0.2%	Rank history: #47 in FY2021, #34 in FY2022, #33 in FY2024 and #13 in FY2025; down 7 since FY2022.
42	Government and Military Certification Systems, Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$125,910	0.2%	Rank history: #71 in FY2021, #94 in FY2022, #46 in FY2024 and #37 in FY2025; up 52 since FY2022.
43	Transportation North Carolina Department of Through Fayetteville Technical Community College Top agencies DHA (Defense Health Agency)	$125,550	0.2%	Rank history: #60 in FY2021, #67 in FY2022, #60 in FY2024 and not on the FY2025 list; up 24 since FY2022.
44	Jamison Professional Services Inc. Top agencies VA (Department of Veterans Affairs)	$125,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2024 and #31 in FY2025; new.
45	El Paso County Community College District Top agencies DHA (Defense Health Agency)	$114,544	0.2%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2024 and #23 in FY2025; new.
46	Best Practices Group LLC Top agencies VA (Department of Veterans Affairs)	$112,230	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
47	Devry Inc. 2 awardees, including Association of Certified Anti-Money Laundering Specialists, LLC and Becker Professional Development Corporation Top agencies DOS (Department of State) SEC (Securities and Exchange Commission)	$110,400	0.2%	Rank history: #85 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
48	International Electrical Testing Association Top agencies Army (Department of the Army)	$109,360	0.2%	Rank history: #41 in FY2021, #44 in FY2022, #30 in FY2024 and #33 in FY2025; down 4 since FY2022.
49	American Society of Health-System Pharmacists Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$104,700	0.2%	Rank history: #37 in FY2021, #48 in FY2022, #34 in FY2024 and #24 in FY2025; down 1 since FY2022.
50	Team Henry Enterprises, LLC Top agencies Army (Department of the Army)	$102,258	0.2%	Rank history: not on the FY2021 list, #50 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
51	American Nurses' Association Through American Nurses Credentialing Center, Inc. A / K / A American Nurses Credentialing Center Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$88,483	0.1%	Rank history: not on the FY2021 list, #45 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
52	Quality Texas Foundation Top agencies VA (Department of Veterans Affairs)	$86,983	0.1%	Rank history: not on the FY2021 list, #57 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
53	American National Standards Institute Incorporated Top agencies HHS (Department of Health and Human Services)	$86,900	0.1%	Rank history: #48 in FY2021, #58 in FY2022, #45 in FY2024 and #35 in FY2025; up 5 since FY2022.
54	Kristall De El Salvador SA De CV Top agencies DOS (Department of State)	$86,550	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	American Industrial Hygiene Association Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) DOL (Department of Labor)	$84,852	0.1%	Rank history: #77 in FY2021, #54 in FY2022, #43 in FY2024 and #41 in FY2025; down 1 since FY2022.
56	Association for Clinical Pastoral Education Inc. Top agencies Army (Department of the Army)	$75,226	0.1%	Rank history: #68 in FY2021, #53 in FY2022, #50 in FY2024 and #34 in FY2025; down 3 since FY2022.
57	Vanguard Gcs, LLC Top agencies VA (Department of Veterans Affairs)	$66,250	0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2024 and not on the FY2025 list; new.
58	National Society of Black Engineers Top agencies DOS (Department of State)	$65,000	0.1%	Rank history: #63 in FY2021, #68 in FY2022, #97 in FY2024 and not on the FY2025 list; up 10 since FY2022.
59	Cornell University Top agencies USAF (Department of the Air Force)	$62,973	0.1%	Rank history: #55 in FY2021, #62 in FY2022, #39 in FY2024 and not on the FY2025 list; up 3 since FY2022.
60	Parachute Laboratories Inc. Top agencies DOT (Department of Transportation)	$62,820	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
61	National Commission On Correctional Health Care Top agencies DHS (Department of Homeland Security)	$57,136	0.1%	Rank history: #59 in FY2021, #61 in FY2022, #27 in FY2024 and #38 in FY2025; unchanged since FY2022.
62	Accreditation Council for Pharmacy Education Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$55,500	0.1%	Rank history: #65 in FY2021, #71 in FY2022, #55 in FY2024 and #67 in FY2025; up 9 since FY2022.
63	Commonweal Top agencies VA (Department of Veterans Affairs)	$52,700	0.1%	Rank history: not on the FY2021 list, #83 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
64	Mountain State ESC Top agencies Army (Department of the Army)	$52,500	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2024 and #47 in FY2025; new.
65	Microtechnologies LLC Top agencies USAF (Department of the Air Force)	$52,368	0.1%	Rank history: #44 in FY2021, #47 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
66	Arrow Electronics, Inc. Through Immixtechnology Inc. Top agencies EEOC (Equal Employment Opportunity Commission)	$50,677	0.1%	Rank history: #91 in FY2021, #76 in FY2022 and not on the FY2024–FY2025 lists; up 10 since FY2022.
67	Simx, Inc. Top agencies DHA (Defense Health Agency)	$50,560	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #65 in FY2025; new.
68	Press Ganey Associates Inc Top agencies VA (Department of Veterans Affairs)	$50,205	0.1%	Rank history: #80 in FY2021, #75 in FY2022, #58 in FY2024 and #51 in FY2025; up 7 since FY2022.
69	Congressional Award Foundation Top agencies CNCS (Corporation for National and Community Service)	$50,000	0.1%	Rank history: #82 in FY2021, #69 in FY2022, #74 in FY2024 and not on the FY2025 list; unchanged since FY2022.
70	Aaalac International Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) Army (Department of the Army)	$47,124	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2024 and #55 in FY2025; new.
71	Mcgraw Hill LLC Top agencies DHA (Defense Health Agency)	$44,213	0.1%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2024 and not on the FY2025 list; new.
72	UBM LLC Through Informa TECH Holdings LLC Top agencies VA (Department of Veterans Affairs)	$40,275	0.1%	Rank history: #45 in FY2021, not on the FY2022 list, #79 in FY2024 and not on the FY2025 list; up 63 since FY2022.
73	NTS Holding Corporation Inc. Through National Quality Assurance - U.s.a., Inc. Top agencies DOJ (Department of Justice)	$37,775	0.1%	Rank history: #76 in FY2021, not on the FY2022 list, #86 in FY2024 and not on the FY2025 list; returned.
74	Francis Tuttle Technology Center School District Top agencies DOI (Department of the Interior)	$36,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2024 and not on the FY2025 list; new.
75	United Training Career LLC Top agencies OSD (Office of the Secretary of Defense)	$35,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
76	American Bar Association Top agencies Navy (Department of the Navy)	$35,000	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #64 in FY2024 and #57 in FY2025; up 4 since FY2022.
77	Management Concepts, Inc. Top agencies DHS (Department of Homeland Security)	$33,304	0.1%	Rank history: not on the FY2021 list, #85 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
78	Penguin Random House LLC Through Relias LLC Top agencies VA (Department of Veterans Affairs)	$32,356	0.1%	Rank history: #81 in FY2021, #82 in FY2022, #68 in FY2024 and not on the FY2025 list; up 4 since FY2022.
79	Clinical and Laboratory Standards Institute, Inc. Top agencies DHA (Defense Health Agency)	$32,000	0.1%	Rank history: #83 in FY2021, not on the FY2022 list, #72 in FY2024 and #60 in FY2025; returned.
80	A2La Workplace Training, Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$31,275	<0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2024 and #70 in FY2025; new.
81	TECH Scan Inc. Top agencies VA (Department of Veterans Affairs)	$28,225	<0.1%	Rank history: #57 in FY2021, #52 in FY2022, #41 in FY2024 and #48 in FY2025; down 29 since FY2022.
82	International Information System Security Certification Consortium, Inc. Top agencies DHS (Department of Homeland Security)	$25,630	<0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2024 and not on the FY2025 list; new.
83	Kahl William Top agencies Army (Department of the Army)	$25,552	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Executive Information Systems, L.L.C. Top agencies USAF (Department of the Air Force)	$25,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	Foundation for the Accreditation of Cellular Therapy Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$24,860	<0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #75 in FY2024 and #68 in FY2025; up 4 since FY2022.
86	New Hampshire Commission for Human Rights Through New Hampshire Department of Environmental Services Top agencies EPA (Environmental Protection Agency)	$24,600	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
87	Vaxa Inc Top agencies DHA (Defense Health Agency)	$23,891	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2024 and not on the FY2025 list; new.
88	Applylogic Consulting Group, LLC Top agencies VA (Department of Veterans Affairs)	$23,523	<0.1%	Rank history: #66 in FY2021, #72 in FY2022 and not on the FY2024–FY2025 lists; down 16 since FY2022.
89	Wisconsin Hospital Association Inc. Top agencies VA (Department of Veterans Affairs)	$23,199	<0.1%	Rank history: #89 in FY2021, not on the FY2022 list, #80 in FY2024 and #71 in FY2025; returned.
90	American Association of State Highway and Transportation Officials Top agencies DOT (Department of Transportation)	$22,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2024 and not on the FY2025 list; new.
91	Florida Sterling Council, Inc. Top agencies VA (Department of Veterans Affairs)	$22,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	LBT Diagnostic Radiation Physics Consulting Ltd Top agencies DHA (Defense Health Agency)	$21,600	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	American Council On Education Top agencies DCSA (Defense Counterintelligence and Security Agency)	$21,300	<0.1%	Rank history: #61 in FY2021, not on the FY2022 list, #78 in FY2024 and not on the FY2025 list; up 12 since FY2022.
94	TUV SUD E.V. Through Tuev Technische Ueberwachung Hessen GMBH Top agencies Army (Department of the Army)	$19,945	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #84 in FY2025; new.
95	Strativia LLC Top agencies Commerce (Department of Commerce)	$18,014	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	Sprintzeal Americas Inc. Top agencies Navy (Department of the Navy)	$17,500	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Accreditation Board for Engineering & Technology Inc Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$17,185	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	Detroit East Medical Control Authority (Demca,) Inc. Top agencies VA (Department of Veterans Affairs)	$17,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2024 and #63 in FY2025; up 3 since FY2022.
99	National Strength & Conditioning Association Top agencies Army (Department of the Army)	$14,985	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
100	New York University Top agencies VA (Department of Veterans Affairs)	$14,516	<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 $63.3 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.
• 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