Top 100 Defense Human Resources Activity Contractors, FY2024

Name: Top 100 Defense Human Resources Activity Contractors, FY2024
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

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

The top 10 won 69% of FY2024 Defense Human Resources Activity contract dollars

Contract obligations: $1,103,919,155 Net of deobligations, by the Defense Human Resources Activity and its offices
Contractors: 198 Parent companies with an obligation
Largest contractor: Inspiritec Inc. $221 million, 19.3% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Inspiritec Inc. 2 awardees Top NAICS codes 561422 Telemarketing Bureaus and Other Contact Centers	$221,426,891	19.3%	Rank history: #10 in FY2021, #11 in FY2022, #8 in FY2023 and not on the FY2025 list; up 7 since FY2023.
2	Peraton Inc. 2 awardees, including Peraton Enterprise Solutions LLC Top NAICS codes 541512 Computer Systems Design Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541519 Other Computer Related Services	$163,128,288	14.2%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
3	Deloitte Through Deloitte Consulting LLP Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$126,662,079	11.0%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
4	The Interpublic Group of Companies Inc 2 awardees, including Mullenlowe US Inc. Top NAICS codes 541810 Advertising Agencies	$77,463,099	6.8%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
5	Institute of International Education Inc. Top NAICS codes 611710 Educational Support Services	$49,133,747	4.3%	Rank history: #6 in FY2021, #6 in FY2022, #3 in FY2023 and #9 in FY2025; down 2 since FY2023.
6	Human Resources Research Organization (Humrro) Top NAICS codes 611710 Educational Support Services	$40,524,997	3.5%	Rank history: #11 in FY2021, #5 in FY2022, #5 in FY2023 and #5 in FY2025; down 1 since FY2023.
7	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541511 Custom Computer Programming Services	$39,345,558	3.4%	Rank history: #12 in FY2021, #8 in FY2022, #10 in FY2023 and #4 in FY2025; up 3 since FY2023.
8	Fors Marsh Group LLC Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$30,591,386	2.7%	Rank history: #9 in FY2021, #9 in FY2022, #9 in FY2023 and #8 in FY2025; up 1 since FY2023.
9	HP Enterprise Services LLC 2 awardees, including Peraton Enterprise Solutions LLC and Peraton Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$24,832,709	2.2%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and not on the FY2025 list; down 8 since FY2023.
10	Arctic Slope Regional Corporation Through Netcentric Technology, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$19,525,067	1.7%	Rank history: #16 in FY2021, #14 in FY2022, #19 in FY2023 and #14 in FY2025; up 9 since FY2023.
11	Leidos, Inc. Top NAICS codes 541519 Other Computer Related Services	$18,755,833	1.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
12	Netcentric Technology, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$16,767,420	1.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
13	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$15,524,599	1.4%	Rank history: #7 in FY2021, #4 in FY2022, #4 in FY2023 and #6 in FY2025; down 9 since FY2023.
14	Rei Systems, Inc. 2 awardees Top NAICS codes 541512 Computer Systems Design Services	$14,969,003	1.3%	Rank history: #17 in FY2021, #10 in FY2022, #13 in FY2023 and #10 in FY2025; down 1 since FY2023.
15	Mythics Inc. 2 awardees, including Emergent, LLC Top NAICS codes 541519 Other Computer Related Services	$14,021,339	1.2%	Rank history: #13 in FY2021, #12 in FY2022, #12 in FY2023 and not on the FY2025 list; down 3 since FY2023.
16	Kearney & Company, P.C. Top NAICS codes 541211 Offices of Certified Public Accountants	$12,520,926	1.1%	Rank history: #18 in FY2021, #13 in FY2022, #14 in FY2023 and not on the FY2025 list; down 2 since FY2023.
17	Rape, Abuse and Incest National Network Rainn Top NAICS codes 624190 Other Individual and Family Services	$12,070,506	1.1%	Rank history: #26 in FY2021, #15 in FY2022, #15 in FY2023 and #13 in FY2025; down 2 since FY2023.
18	Xtec, Incorporated Top NAICS codes 541519 Other Computer Related Services	$9,672,631	0.8%	Rank history: #20 in FY2021, #7 in FY2022, #7 in FY2023 and #7 in FY2025; down 11 since FY2023.
19	Exigent Services LLC Top NAICS codes 541613 Marketing Consulting Services 541690 Other Scientific and Technical Consulting Services 541611 Administrative Management and General Management Consulting Services	$7,893,775	0.7%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #45 in FY2025; up 22 since FY2023.
20	CACI International Inc. Through Caci Enterprise Solutions, LLC Top NAICS codes 541512 Computer Systems Design Services	$7,878,407	0.7%	Rank history: #19 in FY2021, #17 in FY2022, #17 in FY2023 and not on the FY2025 list; down 3 since FY2023.
21	Oracle Corporation Through Oracle America, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$6,165,701	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
22	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top NAICS codes 541512 Computer Systems Design Services	$5,625,024	0.5%	Rank history: #59 in FY2021, #24 in FY2022, #24 in FY2023 and #23 in FY2025; up 2 since FY2023.
23	Indrasoft Inc. Top NAICS codes 541519 Other Computer Related Services	$5,610,730	0.5%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
24	ACE Info Solutions LLC Through Guidehouse Digital LLC Top NAICS codes 541512 Computer Systems Design Services	$5,563,876	0.5%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023 and not on the FY2025 list; up 2 since FY2023.
25	Nana Regional Corporation Inc. Through Lockwood Hills Federal LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$4,934,360	0.4%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; up 95 since FY2023.
26	Guidehouse Digital LLC Top NAICS codes 541512 Computer Systems Design Services	$4,691,797	0.4%	Rank history: not on the FY2021 list, #29 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
27	National Opinion Research Center Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$4,644,202	0.4%	Rank history: #29 in FY2021, #23 in FY2022, #21 in FY2023 and #24 in FY2025; down 6 since FY2023.
28	II Corps Consultants, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,520,843	0.4%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
29	Koniag Data Solutions LLC Top NAICS codes 541512 Computer Systems Design Services	$4,499,731	0.4%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
30	American Council On Education Top NAICS codes 611710 Educational Support Services	$4,323,787	0.4%	Rank history: #24 in FY2021, #32 in FY2022, #25 in FY2023 and #30 in FY2025; down 5 since FY2023.
31	Chirality Capital Consulting, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541612 Human Resources Consulting Services 541618 Other Management Consulting Services	$4,249,105	0.4%	Rank history: #37 in FY2021, #27 in FY2022, #32 in FY2023 and not on the FY2025 list; up 1 since FY2023.
32	Aderas Inc. Top NAICS codes 541512 Computer Systems Design Services	$4,056,738	0.4%	Rank history: not on the FY2021 list, #30 in FY2022, #28 in FY2023 and #31 in FY2025; down 4 since FY2023.
33	Clason Point Partners Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,879,862	0.3%	Rank history: #32 in FY2021, #33 in FY2022, #30 in FY2023 and #39 in FY2025; down 3 since FY2023.
34	Interactive Government Holdings, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,809,727	0.3%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
35	Exponent Inc. Top NAICS codes 541330 Engineering Services	$3,734,185	0.3%	Rank history: #44 in FY2021, #42 in FY2022, #66 in FY2023 and #38 in FY2025; up 31 since FY2023.
36	Goldbelt Apex, LLC Top NAICS codes 541511 Custom Computer Programming Services	$3,694,948	0.3%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
37	Crisis24 Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$3,490,109	0.3%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
38	Patrona Corporation Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,306,919	0.3%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2025; new.
39	ECS Federal, LLC Top NAICS codes 541330 Engineering Services	$3,244,531	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Clearavenue LLC Top NAICS codes 541519 Other Computer Related Services	$3,199,360	0.3%	Rank history: #14 in FY2021, #16 in FY2022, #27 in FY2023 and #16 in FY2025; down 13 since FY2023.
41	Data Recognition Corporation Top NAICS codes 541910 Marketing Research and Public Opinion Polling	$3,120,065	0.3%	Rank history: #21 in FY2021, #25 in FY2022, #20 in FY2023 and #22 in FY2025; down 21 since FY2023.
42	Accenture Federal Services LLC Through ASM Research, LLC Top NAICS codes 541512 Computer Systems Design Services	$3,103,236	0.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
43	Magellan Health, Inc. Through Magellan Federal, Inc. Top NAICS codes 624190 Other Individual and Family Services	$3,000,675	0.3%	Rank history: #28 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
44	AE Strategies LLC Top NAICS codes 541612 Human Resources Consulting Services	$2,986,751	0.3%	Rank history: #84 in FY2021, #47 in FY2022, #47 in FY2023 and not on the FY2025 list; up 3 since FY2023.
45	Acuity-Chs, LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists)	$2,833,281	0.2%	Rank history: #92 in FY2021, not on the FY2022–FY2023 lists and #28 in FY2025; returned.
46	Dell Technologies Inc. 2 awardees, including Dell Marketing L.P. and Dell Federal Systems L.P Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services	$2,833,118	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
47	Applied Development, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,739,669	0.2%	Rank history: #48 in FY2021, #45 in FY2022, #38 in FY2023 and #48 in FY2025; down 9 since FY2023.
48	Kaimetrix L.L.C. Top NAICS codes 541511 Custom Computer Programming Services	$2,624,375	0.2%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; new.
49	Magellan Federal Inc. Top NAICS codes 624190 Other Individual and Family Services	$2,489,552	0.2%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
50	Exhibit Arts. LLC Top NAICS codes 541890 Other Services Related to Advertising	$2,370,040	0.2%	Rank history: #47 in FY2021, #44 in FY2022, #40 in FY2023 and #41 in FY2025; down 10 since FY2023.
51	Peterson's, LLC Top NAICS codes 611699 All Other Miscellaneous Schools and Instruction	$2,364,608	0.2%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; new.
52	Tripoint Solutions LLC Top NAICS codes 541512 Computer Systems Design Services	$2,292,546	0.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and not on the FY2025 list; down 7 since FY2023.
53	Redwood Strategy Group Inc. Top NAICS codes 541219 Other Accounting Services	$2,226,245	0.2%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
54	Ishpi Information Technologies Inc. Top NAICS codes 541519 Other Computer Related Services	$2,156,127	0.2%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and #79 in FY2025; up 2 since FY2023.
55	Center for Applied Linguistics Top NAICS codes 611430 Professional and Management Development Training	$1,999,999	0.2%	Rank history: #46 in FY2021, #46 in FY2022, #48 in FY2023 and #51 in FY2025; down 7 since FY2023.
56	Culture One World LLC Top NAICS codes 541810 Advertising Agencies	$1,976,249	0.2%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023 and not on the FY2025 list; down 38 since FY2023.
57	The Joachim Group, Cpa's & Consultants, LLC Top NAICS codes 541219 Other Accounting Services	$1,848,500	0.2%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2025; new.
58	Microsoft Corporation Top NAICS codes 541512 Computer Systems Design Services	$1,618,386	0.1%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2025; up 58 since FY2023.
59	Amazon Web Services, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$1,603,139	0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
60	College Entrance Examination Board 2 awardees Top NAICS codes 611710 Educational Support Services	$1,591,546	0.1%	Rank history: #35 in FY2021, #49 in FY2022, #43 in FY2023 and #43 in FY2025; down 17 since FY2023.
61	Chugach Technical Solutions LLC Top NAICS codes 541511 Custom Computer Programming Services	$1,553,314	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
62	2Bfocused Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,528,237	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	Sterling Computers Corporation Top NAICS codes 541519 Other Computer Related Services	$1,500,476	0.1%	Rank history: #74 in FY2021, #79 in FY2022, #55 in FY2023 and #89 in FY2025; down 8 since FY2023.
64	ITC Federal, LLC Top NAICS codes 541512 Computer Systems Design Services	$1,394,522	0.1%	Rank history: #63 in FY2021, #52 in FY2022, #49 in FY2023 and not on the FY2025 list; down 15 since FY2023.
65	Unissant Inc Top NAICS codes 541512 Computer Systems Design Services	$1,373,245	0.1%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023 and not on the FY2025 list; down 26 since FY2023.
66	Robert D. Niehaus, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,366,942	0.1%	Rank history: #52 in FY2021, #56 in FY2022, #51 in FY2023 and #44 in FY2025; down 15 since FY2023.
67	Capella Partners LLC Top NAICS codes 541511 Custom Computer Programming Services	$1,351,517	0.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and #57 in FY2025; down 9 since FY2023.
68	Weris, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,343,163	0.1%	Rank history: #25 in FY2021, #26 in FY2022, #22 in FY2023 and not on the FY2025 list; down 46 since FY2023.
69	The Bowen Consulting Group. Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,255,496	0.1%	Rank history: #67 in FY2021, #64 in FY2022, #59 in FY2023 and #87 in FY2025; down 10 since FY2023.
70	Azoole LLC Top NAICS codes 541512 Computer Systems Design Services	$1,236,327	0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #59 in FY2025; up 12 since FY2023.
71	Gentech Associates Inc. Top NAICS codes 541211 Offices of Certified Public Accountants	$1,163,907	0.1%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and #61 in FY2025; down 8 since FY2023.
72	National Organization for Victim Assistance, Inc. Top NAICS codes 611430 Professional and Management Development Training	$1,136,976	0.1%	Rank history: #73 in FY2021, #67 in FY2022, #64 in FY2023 and #65 in FY2025; down 8 since FY2023.
73	Ergoguys, LLC Top NAICS codes 337214 Office Furniture (except Wood) Manufacturing	$1,134,055	0.1%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2023 and #72 in FY2025; down 8 since FY2023.
74	Vistra Communications LLC Top NAICS codes 541613 Marketing Consulting Services	$1,090,074	0.1%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2025; new.
75	CHS Middle East LLC Through Acuity-Chs, LLC Top NAICS codes 621111 Offices of Physicians (except Mental Health Specialists)	$1,070,815	0.1%	Rank history: #58 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 63 since FY2023.
76	Aptima Inc. Top NAICS codes 541511 Custom Computer Programming Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,054,937	0.1%	Rank history: not on the FY2021–FY2023 lists and #95 in FY2025; new.
77	R3 Government Solutions, LLC Top NAICS codes 541612 Human Resources Consulting Services	$1,021,031	0.1%	Rank history: #70 in FY2021, #69 in FY2022, #68 in FY2023 and not on the FY2025 list; down 9 since FY2023.
78	Delany Siegel Zorn & Associates Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$989,570	0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023 and #56 in FY2025; down 5 since FY2023.
79	Technuf, LLC Top NAICS codes 541511 Custom Computer Programming Services	$960,876	0.1%	Rank history: #75 in FY2021, #76 in FY2022, #74 in FY2023 and not on the FY2025 list; down 5 since FY2023.
80	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$931,847	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
81	At&T Inc. 3 awardees, including At&T Enterprises, LLC, At&T Mobility National Accounts LLC and Att Mobility LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite)	$921,164	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Hope Services Top NAICS codes 561720 Janitorial Services	$913,136	0.1%	Rank history: #82 in FY2021, #80 in FY2022, #78 in FY2023 and #67 in FY2025; down 4 since FY2023.
83	Eminent It LLC Top NAICS codes 541511 Custom Computer Programming Services	$899,222	0.1%	Rank history: #71 in FY2021, #71 in FY2022, #71 in FY2023 and #68 in FY2025; down 12 since FY2023.
84	Communication Institute International, Inc. Top NAICS codes 611430 Professional and Management Development Training	$863,345	0.1%	Rank history: not on the FY2021 list, #88 in FY2022, #77 in FY2023 and #69 in FY2025; down 7 since FY2023.
85	Astor & Sanders Corporation Top NAICS codes 541512 Computer Systems Design Services	$836,842	0.1%	Rank history: not on the FY2021 list, #60 in FY2022, #37 in FY2023 and not on the FY2025 list; down 48 since FY2023.
86	Immersion Consulting LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$749,598	0.1%	Rank history: #76 in FY2021, #77 in FY2022, #76 in FY2023 and #75 in FY2025; down 10 since FY2023.
87	Assyst Inc. Top NAICS codes 541519 Other Computer Related Services	$746,623	0.1%	Rank history: #90 in FY2021, #81 in FY2022, #79 in FY2023 and #80 in FY2025; down 8 since FY2023.
88	Arrow Electronics, Inc. 2 awardees, including EC America, Inc. and Immixtechnology Inc. Top NAICS codes 443120 Computer and Software Stores 541519 Other Computer Related Services	$737,959	0.1%	Rank history: #100 in FY2021, #82 in FY2022, #81 in FY2023 and #85 in FY2025; down 7 since FY2023.
89	Charles River Analytics, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$717,994	0.1%	Rank history: not on the FY2021 list, #72 in FY2022, not on the FY2023 list and #96 in FY2025; up 13 since FY2023.
90	Oracle Health Government Services Inc. Through Oracle America, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$686,766	0.1%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
91	Archimedes Global, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$671,049	0.1%	Rank history: #68 in FY2021, #62 in FY2022, #57 in FY2023 and not on the FY2025 list; down 34 since FY2023.
92	Nisga'A TEK LLC Top NAICS codes 541511 Custom Computer Programming Services	$624,645	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Intellectechs Inc. Top NAICS codes 541511 Custom Computer Programming Services	$611,289	0.1%	Rank history: not on the FY2021 list, #86 in FY2022, #83 in FY2023 and #82 in FY2025; down 10 since FY2023.
94	Prometric LLC Top NAICS codes 611710 Educational Support Services	$583,106	0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; new.
95	Dynamic Systems Inc. Top NAICS codes 541519 Other Computer Related Services	$525,918	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	Asgn Incorporated Through ECS Federal, LLC Top NAICS codes 541330 Engineering Services	$514,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
97	ABM Federal Sales Inc. Top NAICS codes 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing	$511,607	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 9 since FY2023.
98	Vantage Point Consulting Inc. Top NAICS codes 541511 Custom Computer Programming Services	$507,182	<0.1%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023 and #97 in FY2025; down 44 since FY2023.
99	Goldbelt Incorporated Through Goldbelt Glacier Health Services, LLC Top NAICS codes 541511 Custom Computer Programming Services	$480,999	<0.1%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023 and not on the FY2025 list; down 65 since FY2023.
100	Design Interactive, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$479,998	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 198 contractors listed here. See the rest on GovTribe.

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 $1.15 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 Defense Human Resources Activity contractors in FY2024?

1. Inspiritec Inc. ($221M), 2. Peraton Inc. ($163M), 3. Deloitte ($127M), 4. The Interpublic Group of Companies Inc ($77.5M), 5. Institute of International Education Inc. ($49.1M), 6. Human Resources Research Organization (Humrro) ($40.5M), 7. Booz Allen Hamilton Holding Corporation ($39.3M), 8. Fors Marsh Group LLC ($30.6M), 9. HP Enterprise Services LLC ($24.8M), 10. Arctic Slope Regional Corporation ($19.5M).

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