Top 100 Department of Defense Education Activity Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Magellan Health, Inc. 2 awardees, including Magellan Federal, Inc. and Magellan Healthcare Inc. Top NAICS codes 624190 Other Individual and Family Services	$171,239,605	20.9%	Rank history: #2 in FY2022, #1 in FY2023, #4 in FY2024 and not on the FY2025 list; unchanged since FY2020.
2	Leidos Holdings, Inc. Through Leidos, Inc. Top NAICS codes 624190 Other Individual and Family Services	$128,732,768	15.7%	Rank history: #1 in FY2022, #2 in FY2023, #1 in FY2024 and #2 in FY2025; new, not ranked in FY2020.
3	Carelon Health Federal Services, Inc. Top NAICS codes 624190 Other Individual and Family Services	$81,404,587	10.0%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
4	Zeiders Enterprises, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$39,324,809	4.8%	Rank history: #6 in FY2022, #9 in FY2023, #8 in FY2024 and #6 in FY2025; down 1 since FY2020.
5	Miracle Systems LLC Top NAICS codes 541330 Engineering Services	$32,842,971	4.0%	Rank history: #5 in FY2022, #4 in FY2023, #3 in FY2024 and #4 in FY2025; unchanged since FY2020.
6	Strategic Resources, Incorporated Top NAICS codes 624190 Other Individual and Family Services	$20,000,000	2.4%	Rank history: #29 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
7	Interactive Process Technology, LLC Top NAICS codes 541512 Computer Systems Design Services	$18,471,741	2.3%	Rank history: not on the FY2022–FY2025 lists; up 45 since FY2020.
8	Town of Lincoln Town Hall Top NAICS codes 611110 Elementary and Secondary Schools	$16,587,336	2.0%	Rank history: #9 in FY2022, #8 in FY2023, #6 in FY2024 and #7 in FY2025; unchanged since FY2020.
9	Custodial Enterprises GMBH Top NAICS codes 561210 Facilities Support Services	$13,384,689	1.6%	Rank history: #11 in FY2022, #10 in FY2023, #10 in FY2024 and #10 in FY2025; up 2 since FY2020.
10	Trace Systems Holdings Inc. Through Trace Systems, Inc. Top NAICS codes 517410 Satellite Telecommunications	$12,936,650	1.6%	Rank history: #23 in FY2022, #16 in FY2023, #59 in FY2024 and not on the FY2025 list; down 4 since FY2020.
11	Fcn, Inc. Top NAICS codes 541519 Other Computer Related Services	$11,068,279	1.4%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
12	22Nd Century Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$10,874,416	1.3%	Rank history: #13 in FY2022, #11 in FY2023, not on the FY2024 list and #8 in FY2025; new, not ranked in FY2020.
13	Caesar Rodney School District Top NAICS codes 611110 Elementary and Secondary Schools	$10,238,520	1.3%	Rank history: #14 in FY2022, not on the FY2023 list, #12 in FY2024 and #12 in FY2025; up 1 since FY2020.
14	Carnegie Learning Inc. 2 awardees Top NAICS codes 511130 Book Publishers 519130 Internet Publishing and Broadcasting and Web Search Portals	$8,056,726	1.0%	Rank history: not on the FY2022–FY2025 lists; up 57 since FY2020.
15	American Engineering Corporation Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance 493110 General Warehousing and Storage	$7,155,144	0.9%	Rank history: #10 in FY2022, #12 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
16	International Business Sales and Services Corp Top NAICS codes 541512 Computer Systems Design Services	$6,642,507	0.8%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
17	Highland Falls Fort Montgomery School District Top NAICS codes 611110 Elementary and Secondary Schools	$5,686,178	0.7%	Rank history: #17 in FY2022, #19 in FY2023, #18 in FY2024 and #19 in FY2025; down 1 since FY2020.
18	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers	$5,681,762	0.7%	Rank history: #25 in FY2022, #17 in FY2023, #15 in FY2024 and #17 in FY2025; up 83 since FY2020.
19	Mirait.one- Acty JV Top NAICS codes 236220 Commercial and Institutional Building Construction	$5,473,230	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
20	Pond Security Service GMBH Top NAICS codes 561612 Security Guards and Patrol Services	$5,370,471	0.7%	Rank history: #43 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
21	Dev Holdings Top NAICS codes 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing	$5,296,926	0.6%	Rank history: #27 in FY2022, not on the FY2023 list, #73 in FY2024 and not on the FY2025 list; up 2 since FY2020.
22	Audax-Reisen-Gesellschaft MIT Beschrankter Haftung Top NAICS codes 485410 School and Employee Bus Transportation	$5,267,212	0.6%	Rank history: #15 in FY2022, #13 in FY2023, #16 in FY2024 and #18 in FY2025; down 10 since FY2020.
23	Teachers Curriculum Institute LLC Top NAICS codes 511130 Book Publishers	$4,743,892	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	Alpha Facilities Solutions, LLC Top NAICS codes 562910 Remediation Services 511210 Software Publishers	$4,379,647	0.5%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
25	NCS Pearson Inc. 2 awardees Top NAICS codes 611710 Educational Support Services	$3,838,732	0.5%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
26	Omnibusbetrieb Vicari GMBH Top NAICS codes 485410 School and Employee Bus Transportation	$3,799,276	0.5%	Rank history: #20 in FY2022, #20 in FY2023, #28 in FY2024 and not on the FY2025 list; down 6 since FY2020.
27	Taylor Motors, Inc. Top NAICS codes 485410 School and Employee Bus Transportation	$3,555,765	0.4%	Rank history: #16 in FY2022, #15 in FY2023, #11 in FY2024 and #13 in FY2025; down 14 since FY2020.
28	Swingtech Consulting Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$3,411,439	0.4%	Rank history: #19 in FY2022, #24 in FY2023, #21 in FY2024 and not on the FY2025 list; up 11 since FY2020.
29	Index Systems Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541618 Other Management Consulting Services	$3,192,961	0.4%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; up 9 since FY2020.
30	Sumitomo Mitsui Auto Service Company Limited 2 awardees Top NAICS codes 485410 School and Employee Bus Transportation 532112 Passenger Car Leasing	$2,954,360	0.4%	Rank history: #21 in FY2022, #21 in FY2023, #32 in FY2024 and #33 in FY2025; down 11 since FY2020.
31	Insight Public Sector Inc. Top NAICS codes 541519 Other Computer Related Services	$2,948,989	0.4%	Rank history: #44 in FY2022, #34 in FY2023, #25 in FY2024 and #32 in FY2025; up 5 since FY2020.
32	Cengage Learning Inc. 2 awardees Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals 511120 Periodical Publishers 611410 Business and Secretarial Schools	$2,945,292	0.4%	Rank history: #46 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
33	Global Connections To Employment, Inc. Top NAICS codes 561210 Facilities Support Services	$2,928,100	0.4%	Rank history: #37 in FY2022, #29 in FY2023, #43 in FY2024 and #28 in FY2025; up 4 since FY2020.
34	Brevard Achievement Center, Inc. Top NAICS codes 561720 Janitorial Services	$2,792,426	0.3%	Rank history: #40 in FY2022, #36 in FY2023, #36 in FY2024 and #34 in FY2025; up 7 since FY2020.
35	SKE Technical Services GMBH 2 awardees, including SKE SRL Top NAICS codes 561210 Facilities Support Services	$2,489,582	0.3%	Rank history: #8 in FY2022, #5 in FY2023, #5 in FY2024 and #11 in FY2025; up 221 since FY2020.
36	Mackin Book Company Top NAICS codes 424920 Book, Periodical, and Newspaper Merchant Wholesalers 519130 Internet Publishing and Broadcasting and Web Search Portals 511120 Periodical Publishers	$2,438,199	0.3%	Rank history: #31 in FY2022, #31 in FY2023, #34 in FY2024 and #47 in FY2025; down 11 since FY2020.
37	Special Needs Kleinbusgesellschaft MBH Top NAICS codes 485410 School and Employee Bus Transportation	$2,412,396	0.3%	Rank history: not on the FY2022 list, #76 in FY2023, #60 in FY2024 and #51 in FY2025; up 44 since FY2020.
38	Curtiss-Wright Corporation Through Curtiss-Wright DS, Inc. Top NAICS codes 334210 Telephone Apparatus Manufacturing	$2,380,902	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Chainbridge Solutions Incorporated Top NAICS codes 541519 Other Computer Related Services	$2,278,227	0.3%	Rank history: #62 in FY2022, #90 in FY2023, #62 in FY2024 and #39 in FY2025; up 18 since FY2020.
40	JV JOC Germany BMS Top NAICS codes 236220 Commercial and Institutional Building Construction	$2,221,994	0.3%	Rank history: #12 in FY2022 and not on the FY2023–FY2025 lists; up 25 since FY2020.
41	O'reilly Media, Inc. Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$2,198,000	0.3%	Rank history: #51 in FY2022, #46 in FY2023, #54 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
42	Signet Technologies Inc. Top NAICS codes 541512 Computer Systems Design Services	$2,091,263	0.3%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
43	Nihon Sogo Seibi Co. Ltd. Top NAICS codes 561210 Facilities Support Services	$1,992,877	0.2%	Rank history: #55 in FY2022, #60 in FY2023, #65 in FY2024 and #58 in FY2025; up 15 since FY2020.
44	The Bowen Consulting Group. Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,971,155	0.2%	Rank history: #49 in FY2022, #37 in FY2023, #41 in FY2024 and #88 in FY2025; up 5 since FY2020.
45	Ican Resources Inc. Top NAICS codes 561720 Janitorial Services	$1,929,749	0.2%	Rank history: #58 in FY2022, not on the FY2023 list, #50 in FY2024 and #43 in FY2025; down 1 since FY2020.
46	Broadland Guarding Services Limited Top NAICS codes 561612 Security Guards and Patrol Services	$1,908,590	0.2%	Rank history: #79 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
47	BB Government Services GMBH Through Porr Government Services GMBH Top NAICS codes 238990 All Other Specialty Trade Contractors	$1,848,524	0.2%	Rank history: not on the FY2022–FY2025 lists; up 69 since FY2020.
48	Yellowfin Transportation Inc. Top NAICS codes 485410 School and Employee Bus Transportation	$1,797,559	0.2%	Rank history: #53 in FY2022, #51 in FY2023, #72 in FY2024 and #36 in FY2025; down 3 since FY2020.
49	Senon Limited Top NAICS codes 485410 School and Employee Bus Transportation 488490 Other Support Activities for Road Transportation	$1,749,344	0.2%	Rank history: #50 in FY2022, #45 in FY2023, #70 in FY2024 and not on the FY2025 list; down 21 since FY2020.
50	Gapjin Development Co., Ltd. Top NAICS codes 561720 Janitorial Services	$1,694,346	0.2%	Rank history: #69 in FY2022, #68 in FY2023, #81 in FY2024 and #100 in FY2025; up 22 since FY2020.
51	General Dynamics Corporation Through General Dynamics One Source LLC Top NAICS codes 541512 Computer Systems Design Services	$1,642,952	0.2%	Rank history: not on the FY2022–FY2025 lists; down 24 since FY2020.
52	Microsoft Corporation Top NAICS codes 541511 Custom Computer Programming Services	$1,627,900	0.2%	Rank history: #35 in FY2022, #38 in FY2023, #46 in FY2024 and #35 in FY2025; up 7 since FY2020.
53	Nana Regional Corporation Inc Through Affigent, LLC Top NAICS codes 541519 Other Computer Related Services	$1,536,644	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Actionet Inc. Top NAICS codes 541513 Computer Facilities Management Services	$1,483,076	0.2%	Rank history: not on the FY2022–FY2025 lists; down 19 since FY2020.
55	Triple Canopy Inc. Through Centerra Group, LLC Top NAICS codes 561612 Security Guards and Patrol Services	$1,470,985	0.2%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
56	Houghton Mifflin Company Through HMH Education Company Top NAICS codes 511130 Book Publishers	$1,440,473	0.2%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; down 14 since FY2020.
57	USP Cbfs JV, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,378,239	0.2%	Rank history: #73 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
58	Access: Supports for Living Inc. Top NAICS codes 561210 Facilities Support Services	$1,371,506	0.2%	Rank history: #67 in FY2022, #64 in FY2023, #75 in FY2024 and #60 in FY2025; up 22 since FY2020.
59	Effective Communication Strategies LLC Top NAICS codes 339930 Doll, Toy, and Game Manufacturing 511130 Book Publishers 339920 Sporting and Athletic Goods Manufacturing	$1,301,826	0.2%	Rank history: not on the FY2022 list, #95 in FY2023, not on the FY2024 list and #20 in FY2025; up 36 since FY2020.
60	Brymak Eagle Pro LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,296,246	0.2%	Rank history: #63 in FY2022, #49 in FY2023, #68 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
61	SNC Scionti & C. DI Scionti Ignazio Top NAICS codes 485410 School and Employee Bus Transportation	$1,253,401	0.2%	Rank history: #61 in FY2022, #61 in FY2023, #76 in FY2024 and #54 in FY2025; up 12 since FY2020.
62	Ebsco Industries Inc. Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$1,252,880	0.2%	Rank history: #65 in FY2022, not on the FY2023–FY2024 lists and #85 in FY2025; up 35 since FY2020.
63	Attainx Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,236,228	0.2%	Rank history: #34 in FY2022, #23 in FY2023, #20 in FY2024 and #26 in FY2025; new, not ranked in FY2020.
64	Kaplan Early Learning Company Top NAICS codes 339930 Doll, Toy, and Game Manufacturing	$1,225,106	0.1%	Rank history: not on the FY2022–FY2024 lists and #69 in FY2025; new, not ranked in FY2020.
65	Cermak GMBH & Co. KG Top NAICS codes 485410 School and Employee Bus Transportation	$1,218,822	0.1%	Rank history: #70 in FY2022, #65 in FY2023, #74 in FY2024 and #37 in FY2025; up 14 since FY2020.
66	Mil-Ken Travel Limited Top NAICS codes 485410 School and Employee Bus Transportation	$1,148,314	0.1%	Rank history: #64 in FY2022, #54 in FY2023, #56 in FY2024 and #48 in FY2025; down 10 since FY2020.
67	Cambridge Information Group Inc. Through Proquest LLC Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$1,146,141	0.1%	Rank history: not on the FY2022 list, #74 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
68	Compass Contract Services (U.K.) Limited Top NAICS codes 561210 Facilities Support Services	$1,139,653	0.1%	Rank history: #76 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
69	College Entrance Examination Board Top NAICS codes 611691 Exam Preparation and Tutoring	$1,091,718	0.1%	Rank history: #80 in FY2022, #75 in FY2023, #67 in FY2024 and #42 in FY2025; up 15 since FY2020.
70	Safal Partners LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,087,642	0.1%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; up 8 since FY2020.
71	Walsh Federal LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,080,668	0.1%	Rank history: not on the FY2022–FY2025 lists; up 81 since FY2020.
72	Alibus International SRL Through Nomago Italia S.R.L. Top NAICS codes 485410 School and Employee Bus Transportation	$1,075,728	0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
73	Reinhold Beisel Top NAICS codes 485410 School and Employee Bus Transportation	$1,060,875	0.1%	Rank history: #26 in FY2022, #22 in FY2023, #23 in FY2024 and #21 in FY2025; up 44 since FY2020.
74	Overdrive Inc. Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$1,057,670	0.1%	Rank history: not on the FY2022 list, #92 in FY2023 and not on the FY2024–FY2025 lists; up 198 since FY2020.
75	New TECH Solutions, Inc. Top NAICS codes 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing 334210 Telephone Apparatus Manufacturing 541519 Other Computer Related Services	$1,049,993	0.1%	Rank history: not on the FY2022 list, #53 in FY2023, not on the FY2024 list and #97 in FY2025; up 51 since FY2020.
76	Zyscovich, LLC Top NAICS codes 541330 Engineering Services	$1,043,863	0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 34 since FY2020.
77	Daewon Express Co., Ltd. 2 awardees Top NAICS codes 485410 School and Employee Bus Transportation	$1,028,715	0.1%	Rank history: #47 in FY2022, #32 in FY2023, #26 in FY2024 and #31 in FY2025; down 43 since FY2020.
78	Autoservizi Meridionali S.R.L. Top NAICS codes 485410 School and Employee Bus Transportation	$978,359	0.1%	Rank history: #71 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
79	Trace Systems, Inc. Top NAICS codes 517410 Satellite Telecommunications	$965,889	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	Universal Services Provider LLC Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$961,059	0.1%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
81	Oliviero Tours S.R.L. Top NAICS codes 485410 School and Employee Bus Transportation	$944,078	0.1%	Rank history: not on the FY2022–FY2025 lists; down 15 since FY2020.
82	Cisco Systems Inc. Top NAICS codes 511210 Software Publishers	$922,167	0.1%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
83	Turner Construction Company Through Sociedad Espanola De Montajes Industriales SA Top NAICS codes 236220 Commercial and Institutional Building Construction	$904,701	0.1%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; up 93 since FY2020.
84	Munson Business Interiors, Inc. Top NAICS codes 337122 Nonupholstered Wood Household Furniture Manufacturing	$851,052	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Crocus LLC Top NAICS codes 541512 Computer Systems Design Services	$807,971	0.1%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
86	KZF Design Inc. Top NAICS codes 541330 Engineering Services	$780,741	0.1%	Rank history: not on the FY2022 list, #28 in FY2023 and not on the FY2024–FY2025 lists; down 57 since FY2020.
87	Follett Corporation Through Follett Software, LLC Top NAICS codes 511210 Software Publishers 334614 Software and Other Prerecorded Compact Disc, Tape, and Record Reproducing	$694,785	0.1%	Rank history: #60 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
88	International Service Contractors LLC Top NAICS codes 561720 Janitorial Services	$686,746	0.1%	Rank history: not on the FY2022–FY2023 lists, #92 in FY2024 and not on the FY2025 list; up 16 since FY2020.
89	Essnova Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$670,705	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	Quadra Control Services Limited. 2 awardees Top NAICS codes 485410 School and Employee Bus Transportation 561110 Office Administrative Services	$650,486	0.1%	Rank history: #41 in FY2022, #43 in FY2023, #98 in FY2024 and not on the FY2025 list; up 2 since FY2020.
91	Willax GMBH Top NAICS codes 485410 School and Employee Bus Transportation	$645,355	0.1%	Rank history: #56 in FY2022, #30 in FY2023, #33 in FY2024 and #22 in FY2025; down 21 since FY2020.
92	Autocares Rico SA Top NAICS codes 485410 School and Employee Bus Transportation	$626,265	0.1%	Rank history: #78 in FY2022, #98 in FY2023, #96 in FY2024 and #72 in FY2025; up 2 since FY2020.
93	Muraro Viaggi E Vacanze DI Muraro Giorgio Top NAICS codes 485410 School and Employee Bus Transportation	$599,120	0.1%	Rank history: #52 in FY2022, #48 in FY2023, #64 in FY2024 and #53 in FY2025; new, not ranked in FY2020.
94	Christian Schary, Engelbert Schary Busunternehmen Top NAICS codes 485410 School and Employee Bus Transportation	$593,632	0.1%	Rank history: #84 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
95	Savvas Learning Company LLC Top NAICS codes 511130 Book Publishers	$588,874	0.1%	Rank history: not on the FY2022–FY2024 lists and #40 in FY2025; up 226 since FY2020.
96	West Point Tours Inc. Top NAICS codes 485410 School and Employee Bus Transportation	$531,735	0.1%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
97	Library Ideas, LLC Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$500,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Hipfner-Reisen Inhaber: Ines Krell E.k. Top NAICS codes 485410 School and Employee Bus Transportation	$496,088	0.1%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; down 13 since FY2020.
99	Tanaka Gumi Tanaka Construction Konno Kensetsu JV Top NAICS codes 236220 Commercial and Institutional Building Construction	$481,628	0.1%	Rank history: not on the FY2022 list, #91 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
100	C & G Coach Services Limited Top NAICS codes 485410 School and Employee Bus Transportation	$475,574	0.1%	Rank history: not on the FY2022–FY2024 lists and #93 in FY2025; up 13 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 $818 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