Top 100 Contractors in NAICS 541612: Human Resources Consulting Services, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Magellan Health, Inc. 2 awardees, including Magellan Federal, Inc. and Magellan Healthcare Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$92,502,630	9.7%	Rank history: #4 in FY2022, #1 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
2	Accenture Federal Services LLC 2 awardees Top agencies DHS (Department of Homeland Security) OPM (Office of Personnel Management) Commerce (Department of Commerce)	$69,796,158	7.3%	Rank history: #8 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
3	Deloitte LLP Through Deloitte Consulting LLP Top agencies OPM (Office of Personnel Management) DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$68,885,852	7.2%	Rank history: #14 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2020.
4	Inverness Technologies Inc. Top agencies Army (Department of the Army)	$53,082,375	5.6%	Rank history: #3 in FY2022, #7 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
5	System One Holdings, LLC Through Gap Solutions, Inc. Top agencies Army (Department of the Army)	$52,053,520	5.5%	Rank history: #2 in FY2022, #4 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
6	Management Analysis Technologies (Mat), Incorporated Top agencies Army (Department of the Army)	$39,940,065	4.2%	Rank history: #7 in FY2022, #5 in FY2023, #3 in FY2024 and #4 in FY2025; up 8 since FY2020.
7	Serco North America (Holdings) Inc Through Serco Inc. Top agencies DOL (Department of Labor) Army (Department of the Army)	$34,359,696	3.6%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
8	Calibre Systems Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$32,144,272	3.4%	Rank history: #10 in FY2022, #9 in FY2023, #10 in FY2024 and #13 in FY2025; up 8 since FY2020.
9	360 Patriot Enterprises LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$28,693,668	3.0%	Rank history: #1 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; down 5 since FY2020.
10	Govstrive LLC Top agencies USDA (Department of Agriculture) Commerce (Department of Commerce) Treasury (Department of the Treasury)	$28,539,632	3.0%	Rank history: #6 in FY2022, #6 in FY2023, #25 in FY2024 and #59 in FY2025; unchanged since FY2020.
11	Science Applications International Corporation Top agencies OPM (Office of Personnel Management)	$27,738,882	2.9%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
12	Dynamic Systems Technology, Inc. Top agencies Army (Department of the Army)	$26,323,614	2.8%	Rank history: #15 in FY2022, #14 in FY2023, #11 in FY2024 and #27 in FY2025; down 3 since FY2020.
13	Rividium Inc. Top agencies USDA (Department of Agriculture) DOE (Department of Energy) Treasury (Department of the Treasury)	$16,435,118	1.7%	Rank history: #21 in FY2022, #20 in FY2023, #16 in FY2024 and #29 in FY2025; up 2 since FY2020.
14	Quality Innovation, Inc. Top agencies Army (Department of the Army)	$15,899,911	1.7%	Rank history: #27 in FY2022, not on the FY2023–FY2024 lists and #24 in FY2025; up 3 since FY2020.
15	Universities Space Research Association Top agencies NASA (National Aeronautics and Space Administration)	$15,130,212	1.6%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
16	Strategic Resources, Incorporated Top agencies Army (Department of the Army)	$14,659,251	1.5%	Rank history: #12 in FY2022, #15 in FY2023, #2 in FY2024 and #3 in FY2025; down 8 since FY2020.
17	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy)	$14,151,107	1.5%	Rank history: not on the FY2022 list, #34 in FY2023, #13 in FY2024 and #7 in FY2025; down 14 since FY2020.
18	Goldbelt, Incorporated 2 awardees, including Goldbelt Glacier Health Services, LLC and Nisga'a Tek, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$11,914,177	1.2%	Rank history: #31 in FY2022, #26 in FY2023, #26 in FY2024 and #9 in FY2025; up 14 since FY2020.
19	Golden Key Group, LLC Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security) DOS (Department of State)	$11,080,755	1.2%	Rank history: #16 in FY2022, #18 in FY2023, #14 in FY2024 and #12 in FY2025; down 1 since FY2020.
20	HR Services Solutions, LLC Top agencies Army (Department of the Army)	$10,495,750	1.1%	Rank history: #24 in FY2022, #31 in FY2023, #18 in FY2024 and #20 in FY2025; up 4 since FY2020.
21	R3 Government Solutions, LLC Top agencies DHS (Department of Homeland Security) DCSA (Defense Counterintelligence and Security Agency) DOT (Department of Transportation)	$10,459,969	1.1%	Rank history: #20 in FY2022, #22 in FY2023, #24 in FY2024 and #25 in FY2025; up 16 since FY2020.
22	Ctrmg-Gapsi JV II, LLC Top agencies Army (Department of the Army)	$10,071,310	1.1%	Rank history: #67 in FY2022, #30 in FY2023, #28 in FY2024 and not on the FY2025 list; up 31 since FY2020.
23	Psi Services LLC Through Performance Assessment Network, Inc. Top agencies DHS (Department of Homeland Security)	$9,161,458	1.0%	Rank history: #28 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
24	Linkvisum Consulting Group, Inc. Top agencies DOJ (Department of Justice) Army (Department of the Army) DOT (Department of Transportation)	$8,719,421	0.9%	Rank history: #26 in FY2022, #29 in FY2023, #35 in FY2024 and #48 in FY2025; up 67 since FY2020.
25	Atlas Research LLC Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$8,384,607	0.9%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
26	Guidehouse Inc. 2 awardees Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) OPM (Office of Personnel Management)	$8,157,162	0.9%	Rank history: #37 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
27	Dynamis, Inc. Top agencies DHS (Department of Homeland Security) OPM (Office of Personnel Management)	$7,859,052	0.8%	Rank history: #25 in FY2022, #25 in FY2023, #23 in FY2024 and #16 in FY2025; up 7 since FY2020.
28	Avantgarde LLC Top agencies NSF (National Science Foundation) Army (Department of the Army) DOE (Department of Energy)	$6,889,271	0.7%	Rank history: #35 in FY2022, #39 in FY2023, #36 in FY2024 and #32 in FY2025; down 5 since FY2020.
29	Securitas AB Through Securitas Critical Infrastructure Services, Inc. Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$6,474,506	0.7%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
30	Goodwill Industries of San Antonio Contract Services Top agencies USAF (Department of the Air Force)	$6,123,987	0.6%	Rank history: #33 in FY2022, #36 in FY2023, #33 in FY2024 and #19 in FY2025; down 4 since FY2020.
31	Lsinc Corporation Top agencies MDA (DOD Missile Defense Agency)	$6,033,970	0.6%	Rank history: #41 in FY2022, #37 in FY2023, #42 in FY2024 and not on the FY2025 list; down 2 since FY2020.
32	Cape Fox Facilities Services, LLC Top agencies USAID (US Agency for International Development)	$5,509,541	0.6%	Rank history: #19 in FY2022, #17 in FY2023, #50 in FY2024 and not on the FY2025 list; up 16 since FY2020.
33	Oak Ridge Associated Universities, Incorporated Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) USDA (Department of Agriculture)	$5,359,290	0.6%	Rank history: #17 in FY2022, #16 in FY2023, #21 in FY2024 and #11 in FY2025; new, not ranked in FY2020.
34	Canvas Inc. 2 awardees, including Canvas II, LLC Top agencies Army (Department of the Army)	$5,064,692	0.5%	Rank history: #38 in FY2022, #27 in FY2023, #22 in FY2024 and #26 in FY2025; up 7 since FY2020.
35	Gartner, Inc. 2 awardees, including Personnel Decisions Research Institutes, LLC and SHL US LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) DOT (Department of Transportation)	$4,974,284	0.5%	Rank history: #30 in FY2022, #24 in FY2023, #89 in FY2024 and not on the FY2025 list; down 5 since FY2020.
36	Economic Systems Inc. Top agencies DHS (Department of Homeland Security) GSA (General Services Administration) DOJ (Department of Justice)	$4,969,014	0.5%	Rank history: #36 in FY2022, #35 in FY2023, #27 in FY2024 and #54 in FY2025; up 10 since FY2020.
37	Triple Canopy Inc. Through Omniplex World Services Corporation Top agencies DHS (Department of Homeland Security) SSA (Social Security Administration)	$4,776,648	0.5%	Rank history: not on the FY2022–FY2025 lists; down 24 since FY2020.
38	Lindholm & Associates, Inc. Top agencies DOJ (Department of Justice) DOT (Department of Transportation) DOS (Department of State)	$4,358,166	0.5%	Rank history: #52 in FY2022, #45 in FY2023, #66 in FY2024 and #44 in FY2025; down 7 since FY2020.
39	Federal Management Partners, LLC Top agencies OPM (Office of Personnel Management)	$3,997,038	0.4%	Rank history: #40 in FY2022, #40 in FY2023, #59 in FY2024 and not on the FY2025 list; up 6 since FY2020.
40	Seneca Global Services LLC Top agencies DHA (Defense Health Agency)	$3,778,747	0.4%	Rank history: #53 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
41	Fors Marsh Group LLC Top agencies DHS (Department of Homeland Security)	$3,443,659	0.4%	Rank history: #84 in FY2022, #61 in FY2023, #100 in FY2024 and not on the FY2025 list; down 5 since FY2020.
42	Contracting Resources Group Inc. Top agencies Army (Department of the Army)	$3,325,331	0.3%	Rank history: #65 in FY2022, #64 in FY2023, #69 in FY2024 and #78 in FY2025; up 94 since FY2020.
43	Eagle Hill Consulting, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$3,045,068	0.3%	Rank history: #49 in FY2022, #32 in FY2023, #29 in FY2024 and #31 in FY2025; up 26 since FY2020.
44	C2 Technologies, Inc. Top agencies OPM (Office of Personnel Management) DHS (Department of Homeland Security)	$3,036,112	0.3%	Rank history: #46 in FY2022, #47 in FY2023, #58 in FY2024 and not on the FY2025 list; up 13 since FY2020.
45	Korn / Ferry International Through Sensa Solutions, Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DOS (Department of State)	$3,012,466	0.3%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
46	Bolton Partners, Inc. Through Bolton Partners D.c., Inc. Top agencies PBGC (Pension Benefit Guaranty Corporation)	$2,985,390	0.3%	Rank history: #44 in FY2022, #43 in FY2023, #81 in FY2024 and not on the FY2025 list; down 2 since FY2020.
47	Gemini TECH Services LLC Top agencies Army (Department of the Army)	$2,934,183	0.3%	Rank history: #23 in FY2022, #28 in FY2023, #31 in FY2024 and #41 in FY2025; up 5 since FY2020.
48	Milliman, Inc. Top agencies PBGC (Pension Benefit Guaranty Corporation)	$2,873,597	0.3%	Rank history: not on the FY2022–FY2023 lists, #51 in FY2024 and not on the FY2025 list; down 8 since FY2020.
49	Indtai, Inc. Top agencies Army (Department of the Army)	$2,796,947	0.3%	Rank history: #54 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
50	Athena Technology Group, Inc. Top agencies DOJ (Department of Justice)	$2,628,922	0.3%	Rank history: #47 in FY2022 and not on the FY2023–FY2025 lists; up 30 since FY2020.
51	Conduent Federal Solutions LLC Through Buck Global LLC Top agencies PBGC (Pension Benefit Guaranty Corporation)	$2,559,115	0.3%	Rank history: #43 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
52	Business Management Associates Inc. Top agencies NRC (Nuclear Regulatory Commission) DOT (Department of Transportation) Navy (Department of the Navy)	$2,545,274	0.3%	Rank history: #42 in FY2022, #33 in FY2023, #43 in FY2024 and #51 in FY2025; down 10 since FY2020.
53	Echo Five Group, LLC Top agencies Navy (Department of the Navy)	$2,465,957	0.3%	Rank history: not on the FY2022–FY2023 lists, #48 in FY2024 and #49 in FY2025; up 20 since FY2020.
54	FYI - for Your Information, Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) DOL (Department of Labor)	$2,261,766	0.2%	Rank history: #63 in FY2022, #82 in FY2023 and not on the FY2024–FY2025 lists; down 15 since FY2020.
55	Cybermedia Technologies, LLC Top agencies Army (Department of the Army)	$2,229,919	0.2%	Rank history: #55 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
56	Hispanic Association of Colleges & Universities Top agencies Commerce (Department of Commerce) SEC (Securities and Exchange Commission) Treasury (Department of the Treasury)	$2,202,039	0.2%	Rank history: #77 in FY2022, #81 in FY2023, #91 in FY2024 and not on the FY2025 list; up 16 since FY2020.
57	Your Recruiting Company, Inc. Top agencies DNFSB (Defense Nuclear Facilities Safety Board) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$2,156,280	0.2%	Rank history: #32 in FY2022, #13 in FY2023, #9 in FY2024 and #28 in FY2025; down 36 since FY2020.
58	E-Paga, Inc. Top agencies HHS (Department of Health and Human Services)	$1,997,662	0.2%	Rank history: #62 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
59	Strategy Consulting Team, LLC Top agencies Army (Department of the Army)	$1,932,354	0.2%	Rank history: #22 in FY2022, #23 in FY2023, #17 in FY2024 and #17 in FY2025; up 11 since FY2020.
60	Riva Solutions Inc. Top agencies Commerce (Department of Commerce)	$1,928,714	0.2%	Rank history: #61 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
61	Professional Management Enterprises, Inc. Top agencies Commerce (Department of Commerce)	$1,928,115	0.2%	Rank history: #64 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
62	The Ar Group, LLC Top agencies USDA (Department of Agriculture) DCMA (Defense Contract Management Agency) Commerce (Department of Commerce)	$1,837,837	0.2%	Rank history: #60 in FY2022, #57 in FY2023, #56 in FY2024 and not on the FY2025 list; up 57 since FY2020.
63	Knowledgebank, Inc. Top agencies DHS (Department of Homeland Security) CFPB (Consumer Financial Protection Bureau)	$1,813,180	0.2%	Rank history: #39 in FY2022, #21 in FY2023, #19 in FY2024 and #15 in FY2025; down 9 since FY2020.
64	Nana Regional Corporation Inc Through Tundra Federal LLC Top agencies Army (Department of the Army)	$1,804,338	0.2%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 114 since FY2020.
65	The Chenega Corporation 2 awardees, including Chenega Analytic Business Solutions, LLC and Chenega Global Protection, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$1,716,773	0.2%	Rank history: #85 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; up 92 since FY2020.
66	Compsych Employee Assistance Programs, Inc. Top agencies Treasury (Department of the Treasury) USDA (Department of Agriculture) Army (Department of the Army)	$1,654,129	0.2%	Rank history: #71 in FY2022, #71 in FY2023, #67 in FY2024 and #56 in FY2025; down 1 since FY2020.
67	Collaborent LLC Top agencies DOI (Department of the Interior)	$1,640,883	0.2%	Rank history: #72 in FY2022, #67 in FY2023, #83 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
68	Kizano Corp. Top agencies DOJ (Department of Justice)	$1,617,840	0.2%	Rank history: #69 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
69	Eagle Health, LLC Top agencies Army (Department of the Army) DOJ (Department of Justice)	$1,520,177	0.2%	Rank history: #79 in FY2022, #94 in FY2023 and not on the FY2024–FY2025 lists; up 51 since FY2020.
70	AON Consulting Inc. Top agencies DHS (Department of Homeland Security) PBGC (Pension Benefit Guaranty Corporation)	$1,360,153	0.1%	Rank history: not on the FY2022–FY2025 lists; up 118 since FY2020.
71	AE Strategies LLC Top agencies DOJ (Department of Justice) DHRA (Defense Human Resources Activity)	$1,346,104	0.1%	Rank history: #56 in FY2022, #51 in FY2023, #39 in FY2024 and #58 in FY2025; up 15 since FY2020.
72	Rumik Consultancy LLC Top agencies USDA (Department of Agriculture)	$1,229,695	0.1%	Rank history: #75 in FY2022, #65 in FY2023, #54 in FY2024 and #80 in FY2025; new, not ranked in FY2020.
73	RMA Associates LLC Top agencies VA (Department of Veterans Affairs)	$1,129,723	0.1%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
74	A P Ventures, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$1,122,636	0.1%	Rank history: #48 in FY2022, #52 in FY2023, #64 in FY2024 and #45 in FY2025; up 64 since FY2020.
75	Logistics Management Institute Top agencies Navy (Department of the Navy)	$1,111,067	0.1%	Rank history: not on the FY2022–FY2025 lists; up 15 since FY2020.
76	Janus Associates, Inc. Top agencies DOJ (Department of Justice) Army (Department of the Army)	$994,247	0.1%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; up 94 since FY2020.
77	Pivotal Practices Consulting LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$983,134	0.1%	Rank history: #92 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
78	Veritas Management Group, Inc. Top agencies HHS (Department of Health and Human Services)	$978,748	0.1%	Rank history: not on the FY2022–FY2025 lists; up 44 since FY2020.
79	Equifax Inc. 3 awardees, including Equifax Workforce Solutions LLC Top agencies Commerce (Department of Commerce) USDA (Department of Agriculture) Treasury (Department of the Treasury)	$976,138	0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
80	General Dynamics Corporation 3 awardees, including Csra LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army)	$972,030	0.1%	Rank history: not on the FY2022–FY2025 lists; down 58 since FY2020.
81	Synergy America, Inc. Top agencies HHS (Department of Health and Human Services)	$931,571	0.1%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
82	Rouse Consulting, LLC Top agencies Navy (Department of the Navy) DCMA (Defense Contract Management Agency)	$923,940	0.1%	Rank history: #95 in FY2022, #92 in FY2023, #95 in FY2024 and #74 in FY2025; up 7 since FY2020.
83	Forward Solutions LLC Top agencies DHRA (Defense Human Resources Activity)	$849,257	0.1%	Rank history: not on the FY2022 list, #98 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
84	Micro Systems Consultants, Inc. Top agencies DHS (Department of Homeland Security)	$835,622	0.1%	Rank history: #74 in FY2022, #58 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
85	Tekpro Support Services, LLC Top agencies DOJ (Department of Justice)	$797,771	0.1%	Rank history: not on the FY2022 list, #78 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
86	Strategic Resolution Experts Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$776,200	0.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
87	Chickasaw Health Consulting, LLC Top agencies GAO (Government Accountability Office)	$755,566	0.1%	Rank history: #97 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
88	Performance Excellence Partners, LLC Top agencies DHS (Department of Homeland Security)	$737,080	0.1%	Rank history: #81 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; down 21 since FY2020.
89	Jasint Consulting and Technologies, LLC Top agencies WHS (DOD Washington Headquarters Service)	$694,152	0.1%	Rank history: #87 in FY2022, not on the FY2023 list, #61 in FY2024 and #40 in FY2025; up 13 since FY2020.
90	Johnsons Consulting LLC Top agencies HHS (Department of Health and Human Services)	$691,219	0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
91	It Concepts, Inc. Top agencies Commerce (Department of Commerce)	$689,049	0.1%	Rank history: #50 in FY2022, #48 in FY2023, #8 in FY2024 and #6 in FY2025; down 13 since FY2020.
92	The Millennium Group International, LLC Top agencies Navy (Department of the Navy) DOE (Department of Energy) Smithsonian (Smithsonian Institution)	$670,181	0.1%	Rank history: not on the FY2022 list, #85 in FY2023, #53 in FY2024 and #77 in FY2025; up 62 since FY2020.
93	BG Consulting Services LLC Top agencies FCC (Federal Communications Commission)	$666,530	0.1%	Rank history: #94 in FY2022, #95 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
94	BFG Enterprises, LLC Top agencies Army (Department of the Army)	$629,086	0.1%	Rank history: #78 in FY2022, #80 in FY2023, #73 in FY2024 and #68 in FY2025; new, not ranked in FY2020.
95	Hyperion Biotechnology, Inc. Top agencies Army (Department of the Army)	$626,344	0.1%	Rank history: not on the FY2022–FY2023 lists, #49 in FY2024 and #76 in FY2025; up 11 since FY2020.
96	Koniag, Inc. Through Kadiak LLC Top agencies DHS (Department of Homeland Security)	$586,801	0.1%	Rank history: #89 in FY2022, #87 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
97	Arservices, Limited Top agencies Navy (Department of the Navy)	$579,153	0.1%	Rank history: not on the FY2022–FY2023 lists, #98 in FY2024 and #88 in FY2025; new, not ranked in FY2020.
98	Syber Enterprise Group Inc. Top agencies DOT (Department of Transportation)	$576,980	0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
99	Birches Group, LLC Top agencies DOS (Department of State)	$572,120	0.1%	Rank history: not on the FY2022–FY2023 lists, #88 in FY2024 and #94 in FY2025; up 16 since FY2020.
100	Strategic Innovative Solutions LLC Top agencies HHS (Department of Health and Human Services)	$565,846	0.1%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.

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 $954 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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