Top 100 Contractors in PSC AN: Health R&D Services, FY2024

Name: Top 100 Contractors in PSC AN: Health R&D Services, FY2024
Creator: GovTribe

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

The top 10 won 58% of FY2024 PSC AN contract dollars

Contract obligations: $6,998,818,676 Net of deobligations, by contracts coded PSC AN or a code under it
Contractors: 872 Parent companies with an obligation
Largest contractor: Analytic Services Inc. $1.38 billion, 17.8% 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	Analytic Services Inc. Through Advanced Technology International Top agencies HHS (Department of Health and Human Services)	$1,379,725,319	17.8%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023 and not on the FY2025 list; unchanged since FY2023.
2	Advanced Technology International Top agencies HHS (Department of Health and Human Services)	$1,207,467,926	15.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
3	Leidos Holdings, Inc. 3 awardees, including Leidos Biomedical Research Inc. and Leidos, Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$733,386,090	9.5%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023 and #1 in FY2025; down 1 since FY2023.
4	Medical Technology Enterprise Consortium Top agencies DHA (Defense Health Agency) Army (Department of the Army) Navy (Department of the Navy)	$291,654,671	3.8%	Rank history: #5 in FY2021, #4 in FY2022, #7 in FY2023 and #2 in FY2025; up 3 since FY2023.
5	Parkdale Advanced Materials Inc. Top agencies HHS (Department of Health and Human Services)	$187,360,720	2.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
6	Emergent Biosolutions Inc. Through Emergent Product Development Gaithersburg Inc. Top agencies HHS (Department of Health and Human Services)	$145,628,762	1.9%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
7	PPD Development LP 2 awardees, including Life Technologies Corporation Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$144,249,160	1.9%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2023 and not on the FY2025 list; up 3 since FY2023.
8	The Mitre Corporation 2 awardees Top agencies HHS (Department of Health and Human Services) FCC (Federal Communications Commission) DHA (Defense Health Agency)	$130,517,779	1.7%	Rank history: #6 in FY2021, #7 in FY2022, #16 in FY2023 and #6 in FY2025; up 8 since FY2023.
9	Amgen USA Inc Top agencies HHS (Department of Health and Human Services)	$129,850,668	1.7%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2025; new.
10	Mathematica Inc. 2 awardees Top agencies HHS (Department of Health and Human Services)	$121,429,370	1.6%	Rank history: #49 in FY2021, #30 in FY2022, #32 in FY2023 and #8 in FY2025; up 22 since FY2023.
11	Siga Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$112,552,320	1.5%	Rank history: #7 in FY2021, #32 in FY2022, #12 in FY2023 and #13 in FY2025; up 1 since FY2023.
12	Westat, Inc. 2 awardees Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$103,127,065	1.3%	Rank history: #8 in FY2021, #5 in FY2022, #19 in FY2023 and #7 in FY2025; up 7 since FY2023.
13	Phlow Corp. Top agencies HHS (Department of Health and Human Services)	$91,119,397	1.2%	Rank history: not on the FY2021 list, #10 in FY2022, #26 in FY2023 and #100 in FY2025; up 13 since FY2023.
14	Ascend Performance Materials Texas Inc. Top agencies HHS (Department of Health and Human Services)	$87,666,336	1.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
15	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$67,585,809	0.9%	Rank history: #9 in FY2021, #14 in FY2022, #3 in FY2023 and #10 in FY2025; down 12 since FY2023.
16	ABT Global LLC 3 awardees Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$65,333,830	0.8%	Rank history: #11 in FY2021, #9 in FY2022, #22 in FY2023 and #32 in FY2025; up 6 since FY2023.
17	Duke University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$53,903,911	0.7%	Rank history: #14 in FY2021, #13 in FY2022, #21 in FY2023 and #18 in FY2025; up 4 since FY2023.
18	Modex Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$51,049,267	0.7%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and not on the FY2025 list; up 6 since FY2023.
19	QYK Brands LLC Top agencies HHS (Department of Health and Human Services)	$48,315,608	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	National Opinion Research Center Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$46,426,916	0.6%	Rank history: #20 in FY2021, #26 in FY2022, #33 in FY2023 and #17 in FY2025; up 13 since FY2023.
21	Resilience Government Services, Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$45,507,032	0.6%	Rank history: #10 in FY2021, #22 in FY2022, #40 in FY2023 and not on the FY2025 list; up 19 since FY2023.
22	The Emmes Company, LLC Top agencies HHS (Department of Health and Human Services)	$43,954,733	0.6%	Rank history: #21 in FY2021, #21 in FY2022, #31 in FY2023 and #20 in FY2025; up 9 since FY2023.
23	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$43,761,425	0.6%	Rank history: #100 in FY2021, #77 in FY2022, #73 in FY2023 and #25 in FY2025; up 50 since FY2023.
24	UnitedHealth Group Incorporated Through The Lewin Group, Inc. Top agencies HHS (Department of Health and Human Services)	$42,303,960	0.5%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and #34 in FY2025; up 64 since FY2023.
25	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies DHA (Defense Health Agency) USUHS (DOD Uniformed Services University of the Health Sciences) VA (Department of Veterans Affairs)	$33,853,728	0.4%	Rank history: #15 in FY2021, #42 in FY2022, #57 in FY2023 and #29 in FY2025; up 32 since FY2023.
26	Icahn School of Medicine At Mount Sinai 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$32,927,043	0.4%	Rank history: #18 in FY2021, #37 in FY2022, #28 in FY2023 and #31 in FY2025; up 2 since FY2023.
27	Start2 Group, Inc. Top agencies HHS (Department of Health and Human Services)	$32,864,208	0.4%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
28	Seattle Children'S Hospital Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$32,650,891	0.4%	Rank history: #31 in FY2021, #35 in FY2022, #41 in FY2023 and not on the FY2025 list; up 13 since FY2023.
29	Trustees of Boston University 2 awardees Top agencies HHS (Department of Health and Human Services)	$27,984,567	0.4%	Rank history: #76 in FY2021, #24 in FY2022, #20 in FY2023 and #16 in FY2025; down 9 since FY2023.
30	Basilea Pharmaceutica AG Through Basilea Pharmaceutica International Ltd, Allschwil Top agencies HHS (Department of Health and Human Services)	$27,539,470	0.4%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
31	Sri International Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$25,945,438	0.3%	Rank history: #23 in FY2021, #27 in FY2022, #39 in FY2023 and #49 in FY2025; up 8 since FY2023.
32	Deloitte Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$25,400,916	0.3%	Rank history: not on the FY2021–FY2023 lists and #90 in FY2025; new.
33	Battelle Memorial Institute 2 awardees Top agencies HHS (Department of Health and Human Services)	$25,286,771	0.3%	Rank history: #26 in FY2021, #60 in FY2022, #54 in FY2023 and #14 in FY2025; up 21 since FY2023.
34	The Johns Hopkins University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$24,393,849	0.3%	Rank history: #16 in FY2021, #34 in FY2022, #46 in FY2023 and not on the FY2025 list; up 12 since FY2023.
35	Locus Biosciences Inc. Top agencies HHS (Department of Health and Human Services)	$23,887,628	0.3%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; up 78 since FY2023.
36	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$23,855,199	0.3%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023 and not on the FY2025 list; down 19 since FY2023.
37	Cellphire, Inc. Top agencies DHA (Defense Health Agency)	$23,172,556	0.3%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; up 112 since FY2023.
38	Pattern Bioscience, Inc. Top agencies HHS (Department of Health and Human Services)	$22,500,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
39	Ossium Health Inc. Top agencies HHS (Department of Health and Human Services)	$21,043,426	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	SNA International LLC Top agencies DHA (Defense Health Agency)	$20,838,036	0.3%	Rank history: #38 in FY2021, #51 in FY2022, #60 in FY2023 and #35 in FY2025; up 20 since FY2023.
41	4J Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$20,597,670	0.3%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
42	American Institutes for Research In the Behavioral Sciences Top agencies HHS (Department of Health and Human Services)	$20,384,679	0.3%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; up 118 since FY2023.
43	Albert B. Sabin Vaccine Institute, Inc. (The) Top agencies HHS (Department of Health and Human Services)	$20,310,632	0.3%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
44	3M Company Through Solventum US LLC Top agencies Army (Department of the Army)	$20,087,478	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	ST Jude Children's Research Hospital Inc. Top agencies HHS (Department of Health and Human Services)	$20,013,640	0.3%	Rank history: #32 in FY2021, #67 in FY2022, #55 in FY2023 and #54 in FY2025; up 10 since FY2023.
46	Vysnova Partners LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$19,995,210	0.3%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2025; up 72 since FY2023.
47	Sanofi Pasteur Inc. Through Sanofi Vaccines US Inc. Top agencies HHS (Department of Health and Human Services)	$19,875,769	0.3%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
48	Synedgen, Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$19,234,879	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
49	Teledyne Technologies Incorporated 4 awardees, including Teledyne Brown Engineering, Inc. and Teledyne Instruments, Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$18,837,835	0.2%	Rank history: #42 in FY2021, #82 in FY2022, #81 in FY2023 and #65 in FY2025; up 32 since FY2023.
50	Revagenix Inc. Top agencies HHS (Department of Health and Human Services)	$17,912,826	0.2%	Rank history: not on the FY2021 list, #75 in FY2022, not on the FY2023 list and not on the FY2025 list; up 97 since FY2023.
51	University of Pittsburgh - of the Commonwealth System of Higher Education Top agencies Army (Department of the Army) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$17,364,394	0.2%	Rank history: #39 in FY2021, #66 in FY2022, #34 in FY2023 and #30 in FY2025; down 17 since FY2023.
52	Venatorx Pharmaceuticals Inc. Top agencies HHS (Department of Health and Human Services)	$16,683,471	0.2%	Rank history: #28 in FY2021, #38 in FY2022, #35 in FY2023 and not on the FY2025 list; down 17 since FY2023.
53	Abss Solutions Inc. Top agencies USAF (Department of the Air Force)	$16,466,817	0.2%	Rank history: #27 in FY2021, #25 in FY2022, not on the FY2023 list and not on the FY2025 list; up 335 since FY2023.
54	Fisher Bioservices Inc. Top agencies HHS (Department of Health and Human Services)	$16,144,626	0.2%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; new.
55	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services)	$16,052,411	0.2%	Rank history: not on the FY2021 list, #79 in FY2022, #75 in FY2023 and #75 in FY2025; up 20 since FY2023.
56	Spero Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$15,763,277	0.2%	Rank history: not on the FY2021 list, #68 in FY2022, not on the FY2023 list and not on the FY2025 list; up 94 since FY2023.
57	University of Utah Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$15,679,429	0.2%	Rank history: #95 in FY2021, #90 in FY2022, #78 in FY2023 and #82 in FY2025; up 21 since FY2023.
58	Vanderbelt University Medical Center Through Vanderbilt University Medical Center Top agencies HHS (Department of Health and Human Services)	$15,319,208	0.2%	Rank history: not on the FY2021 list, #55 in FY2022, #74 in FY2023 and not on the FY2025 list; up 16 since FY2023.
59	Fred Hutchinson Cancer Center Top agencies HHS (Department of Health and Human Services)	$15,166,204	0.2%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #62 in FY2025; up 20 since FY2023.
60	RHO Inc. Through Rho Federal Systems Division Inc. Top agencies HHS (Department of Health and Human Services)	$14,627,085	0.2%	Rank history: not on the FY2021 list, #52 in FY2022, #18 in FY2023 and not on the FY2025 list; down 42 since FY2023.
61	University of Georgia Research Foundation, Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$14,522,783	0.2%	Rank history: #36 in FY2021, #59 in FY2022, #71 in FY2023 and #64 in FY2025; up 10 since FY2023.
62	Velico Medical, Inc. Top agencies HHS (Department of Health and Human Services)	$13,874,402	0.2%	Rank history: #37 in FY2021, #72 in FY2022, #25 in FY2023 and not on the FY2025 list; down 37 since FY2023.
63	The Children's Hospital Corporation Top agencies HHS (Department of Health and Human Services)	$13,620,409	0.2%	Rank history: #71 in FY2021, #56 in FY2022, #76 in FY2023 and not on the FY2025 list; up 13 since FY2023.
64	The Leland Stanford Junior University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$13,153,528	0.2%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023 and not on the FY2025 list; up 35 since FY2023.
65	Precision for Medicine, Inc. Top agencies HHS (Department of Health and Human Services)	$13,133,560	0.2%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; new.
66	Partner Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$12,990,717	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 310 since FY2023.
67	GE Medical Systems Information Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$12,954,095	0.2%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2023 and #23 in FY2025; down 17 since FY2023.
68	The Trustees of the University of Pennsylvania 2 awardees Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$12,405,134	0.2%	Rank history: #43 in FY2021, #39 in FY2022, #62 in FY2023 and #94 in FY2025; down 6 since FY2023.
69	Hoffmann-La Roche Inc. Top agencies HHS (Department of Health and Human Services)	$12,271,311	0.2%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; new.
70	Biomerieux Inc. 2 awardees, including Advanced Bioscience Laboratories, Inc. and Biofire Defense LLC Top agencies HHS (Department of Health and Human Services)	$12,145,148	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Emory University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$11,783,679	0.2%	Rank history: #59 in FY2021, #97 in FY2022, #77 in FY2023 and #61 in FY2025; up 6 since FY2023.
72	Psychogenics Inc. Top agencies HHS (Department of Health and Human Services)	$11,772,171	0.2%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2025; new.
73	Indivior Inc. Top agencies HHS (Department of Health and Human Services)	$11,190,536	0.1%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; new.
74	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. and Dynport Vaccine Company LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DHA (Defense Health Agency)	$10,916,299	0.1%	Rank history: #40 in FY2021, #61 in FY2022, #56 in FY2023 and not on the FY2025 list; down 18 since FY2023.
75	President and Fellows of Harvard College Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$10,494,856	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 391 since FY2023.
76	Bioqual, Inc. Top agencies HHS (Department of Health and Human Services)	$10,464,345	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #69 in FY2023 and #87 in FY2025; down 7 since FY2023.
77	National Jewish Health Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$10,365,835	0.1%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; new.
78	Deutsches Zentrum FÜR Luft- UND Raumfahrt E.V. Top agencies NASA (National Aeronautics and Space Administration)	$10,060,374	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	The Medicines Company Top agencies HHS (Department of Health and Human Services)	$10,000,000	0.1%	Rank history: #52 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
80	Allucent Government Services (Us) LLC Top agencies HHS (Department of Health and Human Services)	$9,961,794	0.1%	Rank history: #13 in FY2021, not on the FY2022 list, #5 in FY2023 and not on the FY2025 list; down 75 since FY2023.
81	The Children's Hospital of Philadelphia Top agencies HHS (Department of Health and Human Services)	$9,917,110	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Alpha Genesis Inc. Top agencies HHS (Department of Health and Human Services)	$9,707,445	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 50 since FY2023.
83	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$9,666,471	0.1%	Rank history: #94 in FY2021, #81 in FY2022, #87 in FY2023 and #92 in FY2025; up 4 since FY2023.
84	Africa Global Logistics Mocambique, S.A Top agencies USAID (US Agency for International Development)	$9,659,833	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Vaxart Biosciences Inc. Top agencies HHS (Department of Health and Human Services)	$9,271,193	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	Revvity Health Sciences, Inc. Top agencies HHS (Department of Health and Human Services)	$9,263,365	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	University of North Carolina At Chapel Hill Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$9,167,410	0.1%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; up 124 since FY2023.
88	New York Genome Center, Inc. Top agencies HHS (Department of Health and Human Services)	$8,984,433	0.1%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2025; up 17 since FY2023.
89	Theradex Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$8,900,870	0.1%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2025; up 15 since FY2023.
90	Oregon Health & Science University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$8,517,874	0.1%	Rank history: #87 in FY2021, not on the FY2022 list, #84 in FY2023 and not on the FY2025 list; down 6 since FY2023.
91	The University of Chicago Top agencies HHS (Department of Health and Human Services)	$8,221,245	0.1%	Rank history: #44 in FY2021, #87 in FY2022, #45 in FY2023 and not on the FY2025 list; down 46 since FY2023.
92	The Charles Stark Draper Laboratory, Inc. Top agencies HHS (Department of Health and Human Services)	$8,096,757	0.1%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and not on the FY2025 list; down 41 since FY2023.
93	Charles River Laboratories International Inc. Through Charles River Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$8,067,283	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; new.
94	Access To Advanced Health Institute Top agencies HHS (Department of Health and Human Services)	$7,857,491	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 111 since FY2023.
95	UIC Parent Corporation Through Curia Global Inc. Top agencies HHS (Department of Health and Human Services)	$7,813,197	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2025 list; up 3 since FY2023.
96	Wake Forest University Through Wake Forest University Health Sciences Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$7,800,840	0.1%	Rank history: not on the FY2021 list, #91 in FY2022, #90 in FY2023 and not on the FY2025 list; down 6 since FY2023.
97	Biofactura Inc. Top agencies HHS (Department of Health and Human Services)	$7,786,261	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Health Decisions, Inc. Top agencies HHS (Department of Health and Human Services)	$7,609,627	0.1%	Rank history: #81 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 27 since FY2023.
99	Biofire Defense LLC 2 awardees, including Advanced Bioscience Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$7,571,967	0.1%	Rank history: not on the FY2021 list, #33 in FY2022, #36 in FY2023 and not on the FY2025 list; down 63 since FY2023.
100	Public Health Vaccines LLC Top agencies HHS (Department of Health and Human Services)	$7,490,707	0.1%	Rank history: #61 in FY2021, not on the FY2022–FY2023 lists and #43 in FY2025; up 34 since FY2023.

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100 of 872 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AN

Code	Net obligations	Largest contractor
AN42 Health R&D Services; Health Care – Other; Applied Research	$3,286,944,864	Analytic Services Inc.
AN12 Health R&D Services; Health Care Services; Applied Research	$1,822,916,212	Leidos Holdings, Inc.
AN13 Health R&D Services; Health Care Services; Experimental Development	$532,065,245	Amgen USA Inc
AN11 Health R&D Services; Health Care Services; Basic Research	$501,855,137	Westat, Inc.
AN41 Health R&D Services; Health Care – Other; Basic Research	$166,183,817	The Mitre Corporation
AN14 Health R&D Services; Health Care Services; R&D Administrative Expenses	$49,257,507	University of Pittsburgh - of the Commonwealth System of Higher Education
AN21 Health R&D Services; Health Research and Training; Basic Research	$6,548,113	Glacier Support Services, LLC

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 $7.75 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 PSC AN contractors in FY2024?

1. Analytic Services Inc. ($1.38B), 2. Advanced Technology International ($1.21B), 3. Leidos Holdings, Inc. ($733M), 4. Medical Technology Enterprise Consortium ($292M), 5. Parkdale Advanced Materials Inc. ($187M), 6. Emergent Biosolutions Inc. ($146M), 7. PPD Development LP ($144M), 8. The Mitre Corporation ($131M), 9. Amgen USA Inc ($130M), 10. Mathematica Inc. ($121M).

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