Top 100 Defense Finance and Accounting Service Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	CACI International Inc. 3 awardees, including Caci, Inc. - Federal and Caci Nss, LLC Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541519 Other Computer Related Services	$173,905,107	42.9%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2020.
2	Dell Federal Systems L.P. 2 awardees, including Dell Marketing L.P. Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services	$18,138,366	4.5%	Rank history: #7 in FY2022, #20 in FY2023, #7 in FY2024 and not on the FY2025 list; up 22 since FY2020.
3	Accenture Federal Services LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$12,507,598	3.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
4	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$11,347,690	2.8%	Rank history: #39 in FY2022, #2 in FY2023, #9 in FY2024 and #3 in FY2025; up 1 since FY2020.
5	Intellibridge, LLC Top NAICS codes 541512 Computer Systems Design Services	$10,790,221	2.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
6	Perspecta Inc. Through Peraton Enterprise Solutions LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services	$9,816,632	2.4%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
7	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities 541512 Computer Systems Design Services	$7,360,302	1.8%	Rank history: #17 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
8	HP Enterprise Services LLC Through Peraton Enterprise Solutions LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$6,675,903	1.6%	Rank history: #4 in FY2022, #4 in FY2023, #3 in FY2024 and not on the FY2025 list; up 238 since FY2020.
9	Tmci the Mcvey Company, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$5,973,494	1.5%	Rank history: #5 in FY2022, #10 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
10	Sigma Defense Systems LLC Top NAICS codes 334290 Other Communications Equipment Manufacturing	$5,343,417	1.3%	Rank history: #10 in FY2022, #11 in FY2023, #40 in FY2024 and #13 in FY2025; down 8 since FY2020.
11	Deloitte LLP Through Deloitte & Touche LLP Top NAICS codes 541519 Other Computer Related Services	$5,228,622	1.3%	Rank history: not on the FY2022 list, #12 in FY2023, #10 in FY2024 and #11 in FY2025; up 14 since FY2020.
12	Leidos Holdings, Inc. 2 awardees, including Dynetics, Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$4,996,146	1.2%	Rank history: #11 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
13	Trideum Corporation Top NAICS codes 541330 Engineering Services	$4,664,184	1.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
14	Maximus Federal Technology Solutions, LLC Top NAICS codes 541512 Computer Systems Design Services	$4,422,315	1.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
15	Creative Solutions Consulting Inc. Top NAICS codes 541512 Computer Systems Design Services 541513 Computer Facilities Management Services 541511 Custom Computer Programming Services	$4,171,450	1.0%	Rank history: #38 in FY2022, #15 in FY2023, #17 in FY2024 and #19 in FY2025; down 7 since FY2020.
16	Mythics, LLC Through Emergent, LLC Top NAICS codes 541519 Other Computer Related Services	$3,593,418	0.9%	Rank history: #48 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; up 201 since FY2020.
17	CCI Utility and Construction Services, LLC Top NAICS codes 236210 Industrial Building Construction	$3,266,436	0.8%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
18	Government Acquisitions LLC Top NAICS codes 541519 Other Computer Related Services	$3,257,948	0.8%	Rank history: not on the FY2022–FY2023 lists, #80 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
19	Accessagility LLC Top NAICS codes 541519 Other Computer Related Services	$3,193,003	0.8%	Rank history: not on the FY2022–FY2025 lists; up 23 since FY2020.
20	Avaya Federal Solutions Inc. Top NAICS codes 541513 Computer Facilities Management Services	$3,065,149	0.8%	Rank history: #50 in FY2022, #18 in FY2023, #19 in FY2024 and #20 in FY2025; down 4 since FY2020.
21	Professional Software Consortium Inc. Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$3,009,800	0.7%	Rank history: #21 in FY2022, #22 in FY2023, #35 in FY2024 and #16 in FY2025; up 5 since FY2020.
22	The Armored Group LLC Top NAICS codes 315999 Other Apparel Accessories and Other Apparel Manufacturing	$2,932,500	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
23	Grant Thornton International Ltd Through Grant Thornton LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,931,040	0.7%	Rank history: not on the FY2022 list, #56 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
24	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$2,705,067	0.7%	Rank history: #9 in FY2022, #8 in FY2023 and not on the FY2024–FY2025 lists; up 8 since FY2020.
25	Chenega Enterprise Systems & Solutions, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,689,550	0.7%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
26	Sei Group Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$2,664,998	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
27	Plexus Scientific Corporation Top NAICS codes 562910 Remediation Services	$2,588,167	0.6%	Rank history: #29 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
28	Tripoint Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$2,477,670	0.6%	Rank history: #26 in FY2022, not on the FY2023 list, #21 in FY2024 and not on the FY2025 list; up 12 since FY2020.
29	Nana Regional Corporation Inc Through Affigent, LLC Top NAICS codes 541519 Other Computer Related Services	$2,383,677	0.6%	Rank history: #85 in FY2022, #21 in FY2023, #18 in FY2024 and #21 in FY2025; up 84 since FY2020.
30	Cisco Systems Inc. Top NAICS codes 511210 Software Publishers	$2,201,929	0.5%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
31	Arrow Electronics, Inc. Through Immixtechnology Inc. Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers 541519 Other Computer Related Services 511210 Software Publishers	$1,981,526	0.5%	Rank history: #33 in FY2022, not on the FY2023–FY2024 lists and #66 in FY2025; up 12 since FY2020.
32	Millerknoll Inc. Top NAICS codes 337214 Office Furniture (except Wood) Manufacturing	$1,927,712	0.5%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
33	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services	$1,861,745	0.5%	Rank history: #31 in FY2022, #63 in FY2023, #11 in FY2024 and #6 in FY2025; up 6 since FY2020.
34	Knot Technology Solutions, L.L.C. Top NAICS codes 811212 Computer and Office Machine Repair and Maintenance	$1,858,191	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
35	Williams, Adley & Company DC LLP Top NAICS codes 541211 Offices of Certified Public Accountants	$1,731,519	0.4%	Rank history: #65 in FY2022, #44 in FY2023, #41 in FY2024 and #33 in FY2025; up 12 since FY2020.
36	Sandhurst-Aec, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,589,988	0.4%	Rank history: #42 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; up 38 since FY2020.
37	Thundercat Technology, LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$1,573,672	0.4%	Rank history: #25 in FY2022, #19 in FY2023, #4 in FY2024 and not on the FY2025 list; down 4 since FY2020.
38	Integration Technologies Group, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,557,223	0.4%	Rank history: not on the FY2022 list, #52 in FY2023, not on the FY2024 list and #81 in FY2025; up 7 since FY2020.
39	Sirius Computer Solutions, LLC Through Sirius Federal LLC Top NAICS codes 541519 Other Computer Related Services	$1,440,015	0.4%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; down 11 since FY2020.
40	Gartner, Inc. Top NAICS codes 541519 Other Computer Related Services 519190 All Other Information Services	$1,416,053	0.3%	Rank history: #45 in FY2022, #45 in FY2023, #32 in FY2024 and #52 in FY2025; up 27 since FY2020.
41	Management Concepts, Inc. Top NAICS codes 611430 Professional and Management Development Training	$1,329,223	0.3%	Rank history: not on the FY2022 list, #48 in FY2023, #61 in FY2024 and #42 in FY2025; down 5 since FY2020.
42	Anthony Wayne Rehabilitation Center for Handicapped & Blind Inc. Top NAICS codes 561499 All Other Business Support Services 491110 Postal Service	$1,280,959	0.3%	Rank history: not on the FY2022 list, #55 in FY2023, #55 in FY2024 and #47 in FY2025; up 13 since FY2020.
43	Jacobs Government Services Company Top NAICS codes 541330 Engineering Services	$1,266,622	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	Communication Technologies, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,259,349	0.3%	Rank history: #27 in FY2022, #54 in FY2023, #47 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
45	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,175,650	0.3%	Rank history: #74 in FY2022, #57 in FY2023, #26 in FY2024 and #56 in FY2025; up 15 since FY2020.
46	Webucator, Inc. Top NAICS codes 611420 Computer Training	$1,115,696	0.3%	Rank history: not on the FY2022 list, #75 in FY2023 and not on the FY2024–FY2025 lists; up 33 since FY2020.
47	Blake Willson Group LLC Top NAICS codes 541512 Computer Systems Design Services	$1,045,787	0.3%	Rank history: not on the FY2022 list, #60 in FY2023, #54 in FY2024 and #35 in FY2025; new, not ranked in FY2020.
48	World Wide Technology Holding Co. Inc. Through World Wide Technology LLC Top NAICS codes 541519 Other Computer Related Services	$1,039,114	0.3%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; up 74 since FY2020.
49	Fcn, Inc. Top NAICS codes 541519 Other Computer Related Services	$965,962	0.2%	Rank history: not on the FY2022–FY2025 lists; up 126 since FY2020.
50	Healthequity, Inc. Top NAICS codes 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds	$899,018	0.2%	Rank history: #47 in FY2022, not on the FY2023–FY2024 lists and #39 in FY2025; new, not ranked in FY2020.
51	Horus Technology Solutions, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$879,312	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	Asi-Brymak JV Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$846,974	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	Kearney & Company, P.C. Top NAICS codes 541211 Offices of Certified Public Accountants	$840,606	0.2%	Rank history: not on the FY2022 list, #76 in FY2023, #36 in FY2024 and not on the FY2025 list; down 16 since FY2020.
54	Paragone Solutions, Inc. Top NAICS codes 541512 Computer Systems Design Services	$821,290	0.2%	Rank history: not on the FY2022–FY2025 lists; up 16 since FY2020.
55	Govsmart, Inc. Top NAICS codes 541519 Other Computer Related Services	$813,946	0.2%	Rank history: not on the FY2022 list, #78 in FY2023, #67 in FY2024 and #83 in FY2025; new, not ranked in FY2020.
56	Licking-Knox Goodwill Industries, Inc. Top NAICS codes 561720 Janitorial Services	$788,849	0.2%	Rank history: #43 in FY2022, #77 in FY2023, #28 in FY2024 and #25 in FY2025; down 6 since FY2020.
57	Brymak & Associates, Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$766,411	0.2%	Rank history: not on the FY2022–FY2025 lists; up 21 since FY2020.
58	Kinetica DB Inc.	$750,160	0.2%	Rank history: not on the FY2022 list, #51 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
59	Mesmo (Multi-Ethnic Shopping Mall Online), Inc. Top NAICS codes 334310 Audio and Video Equipment Manufacturing	$747,392	0.2%	Rank history: #54 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
60	DH Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$732,700	0.2%	Rank history: #44 in FY2022, #91 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2020.
61	Vergence LLC Top NAICS codes 541519 Other Computer Related Services	$730,940	0.2%	Rank history: #28 in FY2022, #36 in FY2023, #49 in FY2024 and #29 in FY2025; down 2 since FY2020.
62	Sanford Federal, Inc. Top NAICS codes 621399 Offices of All Other Miscellaneous Health Practitioners	$643,549	0.2%	Rank history: #97 in FY2022, #73 in FY2023, #73 in FY2024 and #64 in FY2025; new, not ranked in FY2020.
63	Microsoft Corporation Top NAICS codes 541512 Computer Systems Design Services	$597,968	0.1%	Rank history: #62 in FY2022, #58 in FY2023, #24 in FY2024 and #5 in FY2025; up 100 since FY2020.
64	Town Center Construction, L.L.C. Top NAICS codes 236220 Commercial and Institutional Building Construction	$580,929	0.1%	Rank history: not on the FY2022–FY2025 lists; up 60 since FY2020.
65	Science Applications International Corporation Top NAICS codes 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$560,050	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Blazar Technology Solutions LLC Top NAICS codes 511210 Software Publishers	$559,303	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
67	Granite Telecommunications, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$547,415	0.1%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
68	DLT Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$501,208	0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; up 80 since FY2020.
69	Nova Global Supply and Services LLC Through Valiant Global Defense Services Inc. Top NAICS codes 611519 Other Technical and Trade Schools	$492,270	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Nysarc Inc. Through Oneida-Lewis Chapter, Nysarc Top NAICS codes 561720 Janitorial Services	$490,525	0.1%	Rank history: #79 in FY2022, #95 in FY2023, #93 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
71	Cykor LLC Top NAICS codes 511210 Software Publishers	$486,364	0.1%	Rank history: #63 in FY2022, #84 in FY2023, #81 in FY2024 and #62 in FY2025; up 19 since FY2020.
72	Norseman Inc. Top NAICS codes 541519 Other Computer Related Services	$472,703	0.1%	Rank history: not on the FY2022–FY2025 lists; up 79 since FY2020.
73	Dentsply Sirona Inc. Through Sirona Dental, Inc. Top NAICS codes 541512 Computer Systems Design Services	$472,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	Kpmg L.L.P. Top NAICS codes 541211 Offices of Certified Public Accountants	$470,938	0.1%	Rank history: not on the FY2022 list, #49 in FY2023, #60 in FY2024 and not on the FY2025 list; up 18 since FY2020.
75	Dynamic Systems Inc. Top NAICS codes 541519 Other Computer Related Services	$461,732	0.1%	Rank history: #59 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; down 48 since FY2020.
76	Loth Inc. Top NAICS codes 337214 Office Furniture (except Wood) Manufacturing	$455,796	0.1%	Rank history: not on the FY2022–FY2024 lists and #91 in FY2025; up 57 since FY2020.
77	Francisco Partners Management Through Everfox LLC Top NAICS codes 511120 Periodical Publishers 541519 Other Computer Related Services	$432,613	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Accel Construction Services Group, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$403,291	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Eduworks Corporation Top NAICS codes 541519 Other Computer Related Services	$400,692	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	Four LLC Top NAICS codes 541519 Other Computer Related Services	$397,610	0.1%	Rank history: #81 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
81	At&T Inc. 3 awardees, including At&T Mobility National Accounts LLC, At&T Enterprises, LLC and Att Mobility LLC Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite) 517110 Wired Telecommunications Carriers	$384,086	0.1%	Rank history: #46 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; down 27 since FY2020.
82	Franconia Real Estate Services Inc. Top NAICS codes 531210 Offices of Real Estate Agents and Brokers	$380,808	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	CMA Technology Inc. Top NAICS codes 541519 Other Computer Related Services	$375,217	0.1%	Rank history: #52 in FY2022, not on the FY2023–FY2024 lists and #100 in FY2025; up 11 since FY2020.
84	The Chenega Corporation Through Chenega Healthcare Services LLC Top NAICS codes 561210 Facilities Support Services	$343,827	0.1%	Rank history: not on the FY2022–FY2024 lists and #58 in FY2025; new, not ranked in FY2020.
85	Windward Consulting Group, Inc. Top NAICS codes 541512 Computer Systems Design Services	$343,314	0.1%	Rank history: #57 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; down 14 since FY2020.
86	Artisan Construction Enterprises Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$340,420	0.1%	Rank history: not on the FY2022–FY2025 lists; up 192 since FY2020.
87	Parsons Corporation Through Parsons Government Services Inc. Top NAICS codes 541330 Engineering Services	$318,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 81 since FY2020.
88	The Computer Workshop Inc. Top NAICS codes 611420 Computer Training	$314,520	0.1%	Rank history: not on the FY2022–FY2025 lists; down 22 since FY2020.
89	Trillion Technology Solutions Inc. Top NAICS codes 541519 Other Computer Related Services	$292,618	0.1%	Rank history: #64 in FY2022, #93 in FY2023, #91 in FY2024 and #69 in FY2025; new, not ranked in FY2020.
90	NCS Technologies Inc. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$291,995	0.1%	Rank history: not on the FY2022–FY2025 lists; down 44 since FY2020.
91	Perpetual Technologies Inc. Top NAICS codes 541512 Computer Systems Design Services	$289,208	0.1%	Rank history: #18 in FY2022, #30 in FY2023, #31 in FY2024 and #26 in FY2025; down 74 since FY2020.
92	Diagenix Corporation Top NAICS codes 811212 Computer and Office Machine Repair and Maintenance	$285,259	0.1%	Rank history: #76 in FY2022, not on the FY2023–FY2024 lists and #90 in FY2025; up 10 since FY2020.
93	Hpc-Com LLC Top NAICS codes 511210 Software Publishers	$278,845	0.1%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
94	Phoenix Technology Solutions, L.L.C. Top NAICS codes 611420 Computer Training	$254,980	0.1%	Rank history: not on the FY2022–FY2024 lists and #98 in FY2025; up 37 since FY2020.
95	On Assignment, Inc. Through Inforeliance LLC Top NAICS codes 541519 Other Computer Related Services	$243,399	0.1%	Rank history: not on the FY2022–FY2025 lists; down 91 since FY2020.
96	Software Information Resource Corp. Top NAICS codes 541519 Other Computer Related Services	$223,437	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 since FY2020.
97	Minburn Technology Group, LLC Top NAICS codes 511210 Software Publishers	$221,769	0.1%	Rank history: #37 in FY2022, #25 in FY2023, #37 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
98	Johnson Controls Security Solutions LLC Through Johnson Controls, Inc. Top NAICS codes 334290 Other Communications Equipment Manufacturing	$220,723	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Alvarez LLC Top NAICS codes 541519 Other Computer Related Services	$207,733	0.1%	Rank history: #60 in FY2022, #98 in FY2023, #86 in FY2024 and not on the FY2025 list; down 42 since FY2020.
100	CDW Corporation Through CDW Government LLC Top NAICS codes 443120 Computer and Software Stores	$207,434	0.1%	Rank history: not on the FY2022–FY2025 lists; down 62 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 $406 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