Top 100 Contractors in NAICS 54172: Research and Development in the Social Sciences and Humanities, FY2024

Name: Top 100 Contractors in NAICS 54172: Research and Development in the Social Sciences and Humanities, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 69% of FY2024 NAICS 54172 contract dollars

Contract obligations: $1,306,816,702 Net of deobligations, by contracts coded NAICS 54172 or a code under it
Contractors: 400 Parent companies with an obligation
Largest contractor: Mathematica Inc. $181 million, 13.4% of obligations
Data as of: Oct 14, 2026

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

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Mathematica Inc. 3 awardees Top agencies HHS (Department of Health and Human Services) ED (Department of Education) SSA (Social Security Administration)	$180,548,627	13.4%	Rank history: #3 in FY2021, #2 in FY2022, #3 in FY2023 and #2 in FY2025; up 2 since FY2023.
2	Lockheed Martin Corporation 2 awardees Top agencies MDA (DOD Missile Defense Agency)	$130,944,686	9.7%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023 and #1 in FY2025; unchanged since FY2023.
3	The Rand Corporation Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$124,923,697	9.3%	Rank history: #2 in FY2021, #3 in FY2022, #1 in FY2023 and #8 in FY2025; down 2 since FY2023.
4	Research Triangle Institute Top agencies HHS (Department of Health and Human Services) ED (Department of Education)	$114,787,440	8.5%	Rank history: #4 in FY2021, #5 in FY2022, #6 in FY2023 and not on the FY2025 list; up 2 since FY2023.
5	Westat, Inc. 2 awardees, including Insight Policy Research, Inc. Top agencies ED (Department of Education) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$107,602,170	8.0%	Rank history: #6 in FY2021, #4 in FY2022, #5 in FY2023 and #7 in FY2025; unchanged since FY2023.
6	National Opinion Research Center Top agencies HHS (Department of Health and Human Services) DOL (Department of Labor) DHRA (Defense Human Resources Activity)	$68,036,078	5.0%	Rank history: #7 in FY2021, #8 in FY2022, #4 in FY2023 and #6 in FY2025; down 2 since FY2023.
7	American Institutes for Research In the Behavioral Sciences Top agencies ED (Department of Education) HHS (Department of Health and Human Services)	$64,532,737	4.8%	Rank history: #5 in FY2021, #7 in FY2022, #7 in FY2023 and #10 in FY2025; unchanged since FY2023.
8	UnitedHealth Group Incorporated Through The Lewin Group, Inc. Top agencies HHS (Department of Health and Human Services)	$56,080,176	4.2%	Rank history: #8 in FY2021, #9 in FY2022, #10 in FY2023 and #16 in FY2025; up 2 since FY2023.
9	Educational Testing Service Top agencies ED (Department of Education)	$39,314,232	2.9%	Rank history: #10 in FY2021, #10 in FY2022, #8 in FY2023 and #3 in FY2025; down 1 since FY2023.
10	Deloitte Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$39,234,122	2.9%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
11	Fors Marsh Group LLC Top agencies DHRA (Defense Human Resources Activity) Army (Department of the Army) DHS (Department of Homeland Security)	$32,397,031	2.4%	Rank history: #11 in FY2021, #13 in FY2022, #9 in FY2023 and #9 in FY2025; down 2 since FY2023.
12	The Mitre Corporation 2 awardees Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) Navy (Department of the Navy)	$25,133,661	1.9%	Rank history: #12 in FY2021, #14 in FY2022, #12 in FY2023 and #4 in FY2025; unchanged since FY2023.
13	ABT Global LLC 2 awardees Top agencies HHS (Department of Health and Human Services) ED (Department of Education)	$20,773,247	1.5%	Rank history: #22 in FY2021, #11 in FY2022, #14 in FY2023 and #20 in FY2025; up 1 since FY2023.
14	University of Maryland, College Park Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) NSF (National Science Foundation)	$18,156,099	1.3%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and #5 in FY2025; up 74 since FY2023.
15	Pearson PLC Through NCS Pearson Inc. Top agencies ED (Department of Education)	$13,933,700	1.0%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023 and #31 in FY2025; up 82 since FY2023.
16	Acumen LLC Top agencies HHS (Department of Health and Human Services)	$13,812,074	1.0%	Rank history: #19 in FY2021, #59 in FY2022, #20 in FY2023 and #11 in FY2025; up 4 since FY2023.
17	Reli Group Inc 2 awardees Top agencies HHS (Department of Health and Human Services)	$13,132,222	1.0%	Rank history: not on the FY2021 list, #20 in FY2022, #16 in FY2023 and #15 in FY2025; down 1 since FY2023.
18	New Editions, Inc. Top agencies ED (Department of Education)	$11,588,848	0.9%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2025; new.
19	New South Associates, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$8,955,368	0.7%	Rank history: #20 in FY2021, #22 in FY2022, #24 in FY2023 and #13 in FY2025; up 5 since FY2023.
20	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top agencies HHS (Department of Health and Human Services)	$8,026,355	0.6%	Rank history: #51 in FY2021, #48 in FY2022, #18 in FY2023 and #19 in FY2025; down 2 since FY2023.
21	National Academy of Sciences Top agencies SSA (Social Security Administration) DOT (Department of Transportation) NSF (National Science Foundation)	$7,093,910	0.5%	Rank history: #30 in FY2021, #33 in FY2022, #17 in FY2023 and #25 in FY2025; down 4 since FY2023.
22	Econometrica, Inc. Top agencies HHS (Department of Health and Human Services)	$6,895,624	0.5%	Rank history: #21 in FY2021, #32 in FY2022, #32 in FY2023 and #27 in FY2025; up 10 since FY2023.
23	Berytech Foundation Top agencies USAID (US Agency for International Development)	$6,619,301	0.5%	Rank history: #33 in FY2021, #46 in FY2022, #38 in FY2023 and not on the FY2025 list; up 15 since FY2023.
24	Education Development Center, Inc. Top agencies USAID (US Agency for International Development)	$6,037,144	0.4%	Rank history: not on the FY2021 list, #52 in FY2022, #21 in FY2023 and not on the FY2025 list; down 3 since FY2023.
25	Far Western Anthropological Research Group, Inc. Top agencies Navy (Department of the Navy)	$5,914,271	0.4%	Rank history: #32 in FY2021, #47 in FY2022, #39 in FY2023 and not on the FY2025 list; up 14 since FY2023.
26	Dunlap and Associates, Inc. Top agencies DOT (Department of Transportation)	$5,792,006	0.4%	Rank history: #66 in FY2021, #18 in FY2022, #52 in FY2023 and not on the FY2025 list; up 26 since FY2023.
27	Actuarial Research Corporation Top agencies HHS (Department of Health and Human Services)	$5,608,212	0.4%	Rank history: #34 in FY2021, #35 in FY2022, #35 in FY2023 and #50 in FY2025; up 8 since FY2023.
28	Fundacion Inciensa Top agencies HHS (Department of Health and Human Services)	$5,462,877	0.4%	Rank history: #17 in FY2021, #16 in FY2022, #15 in FY2023 and #12 in FY2025; down 13 since FY2023.
29	Soar 365 Top agencies DLA (Defense Logistics Agency)	$4,998,345	0.4%	Rank history: not on the FY2021 list, #29 in FY2022, #34 in FY2023 and #21 in FY2025; up 5 since FY2023.
30	Sri International Top agencies ED (Department of Education)	$4,787,380	0.4%	Rank history: #81 in FY2021, #28 in FY2022, #29 in FY2023 and #37 in FY2025; down 1 since FY2023.
31	Wested Top agencies ED (Department of Education)	$4,746,534	0.4%	Rank history: not on the FY2021 list, #30 in FY2022, #27 in FY2023 and #36 in FY2025; down 4 since FY2023.
32	Mdrc Top agencies ED (Department of Education) SSA (Social Security Administration)	$4,230,034	0.3%	Rank history: #35 in FY2021, #62 in FY2022, not on the FY2023 list and not on the FY2025 list; up 229 since FY2023.
33	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services)	$3,875,701	0.3%	Rank history: #15 in FY2021, #21 in FY2022, #23 in FY2023 and #32 in FY2025; down 10 since FY2023.
34	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services)	$3,841,665	0.3%	Rank history: #23 in FY2021, #31 in FY2022, #30 in FY2023 and #23 in FY2025; down 4 since FY2023.
35	The Regents of the University of Colorado Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$3,552,994	0.3%	Rank history: #28 in FY2021, #26 in FY2022, #25 in FY2023 and #28 in FY2025; down 10 since FY2023.
36	The Washington University Top agencies HHS (Department of Health and Human Services)	$3,477,834	0.3%	Rank history: #82 in FY2021, not on the FY2022 list, #37 in FY2023 and not on the FY2025 list; up 1 since FY2023.
37	Sanametrix Inc Top agencies ED (Department of Education)	$3,040,564	0.2%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and #78 in FY2025; up 23 since FY2023.
38	The Manhattan Strategy Group LLC Top agencies ED (Department of Education)	$2,885,342	0.2%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; up 96 since FY2023.
39	Semanticbits LLC Through ICF Incorporated, L.L.C. Top agencies Army (Department of the Army)	$2,846,552	0.2%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; new.
40	Toxcel LLC Top agencies DOT (Department of Transportation)	$2,823,499	0.2%	Rank history: #37 in FY2021, #42 in FY2022, not on the FY2023 list and #24 in FY2025; returned.
41	Bevera Solutions LLC Top agencies HHS (Department of Health and Human Services)	$2,799,049	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	JJR Solutions LLC Top agencies USAF (Department of the Air Force)	$2,593,799	0.2%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #33 in FY2025; down 1 since FY2023.
43	Baron Public Affairs LLC 2 awardees Top agencies WHS (DOD Washington Headquarters Service)	$2,541,665	0.2%	Rank history: not on the FY2021 list, #70 in FY2022, #47 in FY2023 and #35 in FY2025; up 4 since FY2023.
44	Statistical Research Inc. Top agencies Navy (Department of the Navy) USDA (Department of Agriculture)	$2,377,251	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; up 62 since FY2023.
45	Wapsi Valley Archaeology, Inc. Top agencies Army (Department of the Army)	$2,327,477	0.2%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; up 120 since FY2023.
46	Chestnut Health Systems Inc. Top agencies DOI (Department of the Interior)	$2,134,167	0.2%	Rank history: not on the FY2021 list, #94 in FY2022, #56 in FY2023 and #54 in FY2025; up 10 since FY2023.
47	Stratevarious Inc. Top agencies WHS (DOD Washington Headquarters Service)	$2,059,166	0.2%	Rank history: #96 in FY2021, #53 in FY2022, #46 in FY2023 and #47 in FY2025; down 1 since FY2023.
48	Insignia Health LLC Top agencies HHS (Department of Health and Human Services)	$1,989,230	0.1%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; new.
49	Telemus Group LLC Top agencies WHS (DOD Washington Headquarters Service)	$1,986,488	0.1%	Rank history: #46 in FY2021, #61 in FY2022, #49 in FY2023 and #29 in FY2025; unchanged since FY2023.
50	Brockington and Associates, Inc. Top agencies Army (Department of the Army)	$1,981,857	0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; new.
51	International Data Systems LLC Top agencies DHA (Defense Health Agency)	$1,969,583	0.1%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
52	Peraton Inc. Top agencies DHRA (Defense Human Resources Activity) Army (Department of the Army)	$1,871,969	0.1%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; new.
53	Louisiana State University Health Sciences Center New Orleans Top agencies HHS (Department of Health and Human Services)	$1,868,863	0.1%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
54	Activate Research Inc. Top agencies ED (Department of Education)	$1,776,916	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 71 since FY2023.
55	Southeastern Archaeological Research Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$1,752,728	0.1%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; new.
56	Dynamis, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$1,653,084	0.1%	Rank history: #55 in FY2021, #64 in FY2022, #63 in FY2023 and #71 in FY2025; up 7 since FY2023.
57	Advanced Regenerative Manufacturing Institute Inc. Top agencies HHS (Department of Health and Human Services)	$1,566,897	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
58	Oregon Health & Science University Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$1,538,265	0.1%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
59	Research Institute At Nationwide Children's Hospital Top agencies HHS (Department of Health and Human Services)	$1,409,152	0.1%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2025; new.
60	Tetra TECH ES, Inc. Top agencies USAID (US Agency for International Development)	$1,401,679	0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
61	Massachusetts Institute of Technology Top agencies HHS (Department of Health and Human Services)	$1,380,046	0.1%	Rank history: not on the FY2021 list, #6 in FY2022, #50 in FY2023 and not on the FY2025 list; down 11 since FY2023.
62	Dfusion Inc. Top agencies ED (Department of Education) SBA (Small Business Administration)	$1,342,787	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 80 since FY2023.
63	R G Research Group, Inc. Top agencies ED (Department of Education)	$1,285,534	0.1%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2025; new.
64	Atlantic Council of the United States, Inc. (The) Top agencies DTRA (Defense Threat Reduction Agency) WHS (DOD Washington Headquarters Service)	$1,272,130	0.1%	Rank history: not on the FY2021 list, #90 in FY2022, #51 in FY2023 and #74 in FY2025; down 13 since FY2023.
65	The Urban Institute Top agencies Treasury (Department of the Treasury) NSF (National Science Foundation)	$1,269,006	0.1%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; up 38 since FY2023.
66	Optimal Solutions Group, L.l.c Top agencies ED (Department of Education) HUD (Department of Housing and Urban Development)	$1,193,674	0.1%	Rank history: #40 in FY2021, #40 in FY2022, not on the FY2023 list and #52 in FY2025; up 61 since FY2023.
67	Barron LLC Top agencies DOI (Department of the Interior)	$1,056,611	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 146 since FY2023.
68	Center for Strategic & International Studies Inc. Top agencies WHS (DOD Washington Headquarters Service) DTRA (Defense Threat Reduction Agency)	$1,035,271	0.1%	Rank history: #63 in FY2021, not on the FY2022 list, #93 in FY2023 and #58 in FY2025; up 25 since FY2023.
69	Aptima Inc. Top agencies Army (Department of the Army)	$1,029,770	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	Honua Consulting, LLC Top agencies Army (Department of the Army)	$1,007,329	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Alterea, Inc. Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 97 since FY2023.
72	Inletech LLC Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 97 since FY2023.
73	Nimble Hiring, Pbc. Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	Figstar Learning, LLC Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	Kinoo Inc. Through Kibeam Learning, Inc. Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 97 since FY2023.
76	Chibitronics Inc. Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 97 since FY2023.
77	OKO Labs, Inc. Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 97 since FY2023.
78	Graspable Inc. Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Infinid Learning Inc. Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 100 since FY2023.
80	Liminal Esports LLC Top agencies ED (Department of Education)	$1,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 100 since FY2023.
81	Soar Technology Inc. Through Accelint AI, LLC Top agencies Navy (Department of the Navy)	$999,941	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Environmental Solutions & Innovations, Inc. Top agencies Army (Department of the Army)	$907,982	0.1%	Rank history: not on the FY2021 list, #91 in FY2022, not on the FY2023 list and not on the FY2025 list; up 226 since FY2023.
83	Bluepath Labs LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$907,439	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 31 since FY2023.
84	Center for Strategic and Budgetary Assessments Top agencies WHS (DOD Washington Headquarters Service)	$894,729	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.
85	Georgia State University Research Foundation Inc. Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$863,637	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Personnel Decisions Research Institutes, LLC Top agencies Army (Department of the Army)	$846,240	0.1%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; new.
87	BW Research Partnership Inc. Top agencies DOE (Department of Energy)	$842,944	0.1%	Rank history: #57 in FY2021, #58 in FY2022, #55 in FY2023 and #30 in FY2025; down 32 since FY2023.
88	JOS Group LLC Top agencies IMLS (The Institute of Museum and Library Services)	$838,522	0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and #73 in FY2025; up 12 since FY2023.
89	Long Term Strategy Group, LLC Top agencies WHS (DOD Washington Headquarters Service)	$836,048	0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2025; up 34 since FY2023.
90	Auxilio Management Services Top agencies Army (Department of the Army)	$817,145	0.1%	Rank history: #85 in FY2021, not on the FY2022 list, #65 in FY2023 and not on the FY2025 list; down 25 since FY2023.
91	Chickasaw Health Consulting, LLC Top agencies DOT (Department of Transportation)	$729,399	0.1%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and #89 in FY2025; down 30 since FY2023.
92	Preusser Research Group, Inc. Top agencies DOT (Department of Transportation) DOI (Department of the Interior)	$713,877	0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023 and not on the FY2025 list; up 7 since FY2023.
93	Sos International LLC Through Exovera LLC Top agencies WHS (DOD Washington Headquarters Service)	$696,671	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023 and not on the FY2025 list; down 13 since FY2023.
94	Donald William Walls Top agencies Treasury (Department of the Treasury) USDA (Department of Agriculture) FTC (Federal Trade Commission)	$655,625	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 123 since FY2023.
95	NCS Pearson, Inc. Top agencies VA (Department of Veterans Affairs)	$624,957	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	Vsgi LLC Top agencies Commerce (Department of Commerce)	$620,534	<0.1%	Rank history: #92 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 20 since FY2023.
97	BNP Education Partners LLC Top agencies ED (Department of Education)	$617,877	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	R. Christopher Goodwin & Associates, Inc. Top agencies USDA (Department of Agriculture) Army (Department of the Army)	$603,639	<0.1%	Rank history: #45 in FY2021, #54 in FY2022, not on the FY2023 list and #94 in FY2025; up 21 since FY2023.
99	University of Connecticut Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$594,653	<0.1%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; new.
100	Gryphon Scientific, LLC Top agencies WHS (DOD Washington Headquarters Service)	$571,595	<0.1%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2025; new.

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100 of 400 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54172

Code	Net obligations	Largest contractor
541720 Research and Development in the Social Sciences and Humanities	$1,306,816,702	Mathematica Inc.

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 $1.35 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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

Who were the top 10 NAICS 54172 contractors in FY2024?

1. Mathematica Inc. ($181M), 2. Lockheed Martin Corporation ($131M), 3. The Rand Corporation ($125M), 4. Research Triangle Institute ($115M), 5. Westat, Inc. ($108M), 6. National Opinion Research Center ($68M), 7. American Institutes for Research In the Behavioral Sciences ($64.5M), 8. UnitedHealth Group Incorporated ($56.1M), 9. Educational Testing Service ($39.3M), 10. Deloitte ($39.2M).

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