Top 100 Social Security Administration Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 541519 Other Computer Related Services	$245,598,840	13.2%	Rank history: #32 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
2	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. and Leidos Security Detection & Automation, Inc. Top NAICS codes 541519 Other Computer Related Services 561621 Security Systems Services (except Locksmiths)	$165,554,952	8.9%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since FY2020.
3	Dell Federal Systems L.P. 3 awardees, including Dell Marketing L.P. and EMC Corporation Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers 334112 Computer Storage Device Manufacturing	$119,265,513	6.4%	Rank history: #3 in FY2022, #3 in FY2023, #8 in FY2024 and not on the FY2025 list; up 2 since FY2020.
4	International Business Machines Corporation Top NAICS codes 541511 Custom Computer Programming Services 334111 Electronic Computer Manufacturing	$74,598,263	4.0%	Rank history: #2 in FY2022, #7 in FY2023, #3 in FY2024 and #2 in FY2025; up 4 since FY2020.
5	Red River Technology LLC 2 awardees, including Distributed Technology Group LLC Top NAICS codes 334210 Telephone Apparatus Manufacturing 511210 Software Publishers 541519 Other Computer Related Services	$67,225,318	3.6%	Rank history: not on the FY2022 list, #79 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
6	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$61,120,927	3.3%	Rank history: #7 in FY2022, #5 in FY2023, #4 in FY2024 and #3 in FY2025; up 5 since FY2020.
7	Equifax Inc. 2 awardees, including Equifax Workforce Solutions LLC and Equifax Information Services LLC Top NAICS codes 561450 Credit Bureaus 541519 Other Computer Related Services 561611 Investigation and Personal Background Check Services	$60,551,431	3.2%	Rank history: #42 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
8	CA Inc. Top NAICS codes 511210 Software Publishers 541511 Custom Computer Programming Services	$56,244,788	3.0%	Rank history: #9 in FY2022, #9 in FY2023, #18 in FY2024 and not on the FY2025 list; up 36 since FY2020.
9	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$52,022,294	2.8%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
10	Verizon Communications Inc. 2 awardees, including Verizon Business Network Services LLC and Cellco Partnership Top NAICS codes 517110 Wired Telecommunications Carriers 541519 Other Computer Related Services 517919 All Other Telecommunications	$46,799,383	2.5%	Rank history: #5 in FY2022, #2 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
11	Lumen Technologies, Inc. 2 awardees, including Lumen Technologies Government Solutions, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$41,229,361	2.2%	Rank history: not on the FY2022 list, #8 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
12	Turner Construction Company Top NAICS codes 236220 Commercial and Institutional Building Construction	$31,689,205	1.7%	Rank history: #44 in FY2022, #90 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
13	Avaya Federal Solutions Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$27,584,277	1.5%	Rank history: #8 in FY2022, #10 in FY2023, #12 in FY2024 and #15 in FY2025; up 2 since FY2020.
14	Crosby Marketing Communications Inc. Top NAICS codes 541810 Advertising Agencies	$26,553,269	1.4%	Rank history: #11 in FY2022, #19 in FY2023, #20 in FY2024 and #80 in FY2025; unchanged since FY2020.
15	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$25,209,691	1.4%	Rank history: #15 in FY2022, #11 in FY2023, #5 in FY2024 and #4 in FY2025; up 309 since FY2020.
16	Compuware Corporation 2 awardees, including BMC Software, Inc. Top NAICS codes 443120 Computer and Software Stores 511210 Software Publishers	$24,957,162	1.3%	Rank history: #10 in FY2022, #12 in FY2023, #15 in FY2024 and not on the FY2025 list; up 9 since FY2020.
17	Deloitte LLP Through Deloitte Consulting LLP Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$23,640,719	1.3%	Rank history: #12 in FY2022, #13 in FY2023, #9 in FY2024 and #14 in FY2025; up 46 since FY2020.
18	Koniag, Inc. 2 awardees, including Tuknik Government Services LLC Top NAICS codes 541519 Other Computer Related Services	$23,101,591	1.2%	Rank history: #16 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
19	York Telecom Corporation Through Kinly US Corporation Top NAICS codes 517911 Telecommunications Resellers 541810 Advertising Agencies 541519 Other Computer Related Services	$22,953,645	1.2%	Rank history: #18 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; up 29 since FY2020.
20	Manhattan Telecommunications Corporation LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$16,100,000	0.9%	Rank history: #13 in FY2022, #14 in FY2023, #13 in FY2024 and #24 in FY2025; up 14 since FY2020.
21	Arrow Electronics, Inc. 2 awardees, including Immixtechnology Inc. and EC America, Inc. Top NAICS codes 541519 Other Computer Related Services 443120 Computer and Software Stores 334111 Electronic Computer Manufacturing	$15,316,823	0.8%	Rank history: #19 in FY2022, #20 in FY2023, #14 in FY2024 and #18 in FY2025; up 6 since FY2020.
22	Securityhunter, Inc. Top NAICS codes 541330 Engineering Services 334290 Other Communications Equipment Manufacturing 561621 Security Systems Services (except Locksmiths)	$15,084,091	0.8%	Rank history: #17 in FY2022, #17 in FY2023, #24 in FY2024 and #7 in FY2025; down 2 since FY2020.
23	United Language Group, Inc. Through Language Select, LLC Top NAICS codes 541930 Translation and Interpretation Services	$14,366,295	0.8%	Rank history: #26 in FY2022, #28 in FY2023, #35 in FY2024 and #23 in FY2025; up 13 since FY2020.
24	Mythics, LLC Through Emergent, LLC Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services	$14,353,320	0.8%	Rank history: #21 in FY2022, #32 in FY2023, #30 in FY2024 and #27 in FY2025; up 7 since FY2020.
25	Accenture Federal Services LLC 2 awardees, including Phase One Consulting Group, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services 541519 Other Computer Related Services	$12,780,673	0.7%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
26	Maximus Inc. Through Maximus Federal Services, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$12,246,996	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
27	BMC Software, Inc. Through Compuware Corporation Top NAICS codes 511210 Software Publishers	$11,894,325	0.6%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
28	Executive Information Systems, L.L.C. Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$10,346,704	0.6%	Rank history: #25 in FY2022, #25 in FY2023, #32 in FY2024 and #28 in FY2025; up 50 since FY2020.
29	Smithgroup Companies, Inc. Through Smithgroup, Inc. Top NAICS codes 541310 Architectural Services	$10,313,171	0.6%	Rank history: #30 in FY2022, #30 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
30	Accuity Asset Verification Services Inc. Top NAICS codes 541519 Other Computer Related Services	$10,211,755	0.5%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; up 24 since FY2020.
31	Advancia Ahtna JV, LLC Top NAICS codes 519120 Libraries and Archives	$8,909,169	0.5%	Rank history: #61 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
32	United Parcel Service Inc. 2 awardees Top NAICS codes 492110 Couriers and Express Delivery Services	$8,844,000	0.5%	Rank history: #31 in FY2022, #33 in FY2023, #42 in FY2024 and #49 in FY2025; up 27 since FY2020.
33	Mathematica Inc 2 awardees Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities 541611 Administrative Management and General Management Consulting Services	$8,217,238	0.4%	Rank history: #23 in FY2022, #38 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
34	NCS Technologies Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$7,904,560	0.4%	Rank history: #73 in FY2022, #27 in FY2023, #44 in FY2024 and not on the FY2025 list; down 30 since FY2020.
35	Conduent Federal Solutions LLC Top NAICS codes 561499 All Other Business Support Services	$7,416,340	0.4%	Rank history: #37 in FY2022, #36 in FY2023, #40 in FY2024 and not on the FY2025 list; down 3 since FY2020.
36	ICF International, Inc. Through ICF Incorporated, L.L.C. Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$7,301,770	0.4%	Rank history: #84 in FY2022, #84 in FY2023 and not on the FY2024–FY2025 lists; up 69 since FY2020.
37	Healthcare Resource Network LLC Top NAICS codes 561320 Temporary Help Services	$6,692,712	0.4%	Rank history: #49 in FY2022, #92 in FY2023, #63 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
38	K'oyitl'ots'ina, Limited Through Brooks Range Contract Services, Inc. Top NAICS codes 561210 Facilities Support Services	$6,402,703	0.3%	Rank history: #36 in FY2022, not on the FY2023–FY2024 lists and #34 in FY2025; up 11 since FY2020.
39	WGL Energy Services Inc. Top NAICS codes 221122 Electric Power Distribution	$6,228,290	0.3%	Rank history: #58 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
40	Cognosante Holdings, LLC Through Cognosante, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$5,846,263	0.3%	Rank history: #22 in FY2022, #22 in FY2023, #26 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
41	Four LLC Top NAICS codes 541519 Other Computer Related Services 511210 Software Publishers	$5,662,885	0.3%	Rank history: #33 in FY2022, #35 in FY2023, #43 in FY2024 and #29 in FY2025; up 2 since FY2020.
42	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$5,656,000	0.3%	Rank history: not on the FY2022 list, #96 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
43	It Concepts, Inc. Top NAICS codes 541512 Computer Systems Design Services	$5,600,847	0.3%	Rank history: #4 in FY2022, #4 in FY2023, #2 in FY2024 and #74 in FY2025; up 2 since FY2020.
44	Insight Public Sector Inc. 4 awardees, including Pcmg, Inc. Top NAICS codes 334112 Computer Storage Device Manufacturing 511210 Software Publishers 541519 Other Computer Related Services	$5,318,499	0.3%	Rank history: #52 in FY2022, #47 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
45	ABT Global LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541720 Research and Development in the Social Sciences and Humanities	$5,277,238	0.3%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 13 since FY2020.
46	Reed Elsevier Inc. 3 awardees, including Relx Inc., Lexisnexis Special Services Inc. and Reed Technology and Information Services LLC Top NAICS codes 519190 All Other Information Services 561450 Credit Bureaus	$5,237,163	0.3%	Rank history: not on the FY2022–FY2025 lists; up 16 since FY2020.
47	Kearney & Company, P.C. Top NAICS codes 541211 Offices of Certified Public Accountants	$4,920,732	0.3%	Rank history: #43 in FY2022, #71 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
48	Ameriguard Security Services, Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$4,797,312	0.3%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
49	Grant Thornton International Ltd Through Grant Thornton LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,755,185	0.3%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; up 75 since FY2020.
50	At&T Inc. Through Att Mobility LLC Top NAICS codes 541519 Other Computer Related Services 517210 Wireless Telecommunications Carriers (except Satellite)	$4,739,014	0.3%	Rank history: #50 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 39 since FY2020.
51	Nana Regional Corporation Inc Through Affigent, LLC Top NAICS codes 541519 Other Computer Related Services	$4,665,701	0.3%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; up 23 since FY2020.
52	Fedresults, Inc. Top NAICS codes 511210 Software Publishers	$4,600,000	0.2%	Rank history: #47 in FY2022, #59 in FY2023, #55 in FY2024 and not on the FY2025 list; up 25 since FY2020.
53	Westat, Inc. Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities 541611 Administrative Management and General Management Consulting Services	$4,278,458	0.2%	Rank history: not on the FY2022–FY2025 lists; up 73 since FY2020.
54	American Relocation Connections LLC Top NAICS codes 484210 Used Household and Office Goods Moving	$4,112,201	0.2%	Rank history: #39 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
55	Lifebridge Health, Inc. Top NAICS codes 561720 Janitorial Services	$4,090,874	0.2%	Rank history: #51 in FY2022, #55 in FY2023, #51 in FY2024 and #43 in FY2025; up 14 since FY2020.
56	Virginia Commonwealth University Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$4,026,622	0.2%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
57	West Publishing Corporation Top NAICS codes 519190 All Other Information Services	$3,978,922	0.2%	Rank history: not on the FY2022–FY2025 lists; up 14 since FY2020.
58	National Capitol Contracting LLC Top NAICS codes 517919 All Other Telecommunications 541512 Computer Systems Design Services	$3,840,440	0.2%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
59	Arlington Capital Partners IV, L.P. Through Tyto Athene, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$3,760,305	0.2%	Rank history: #45 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
60	Oakmont Contracting LLC Top NAICS codes 238990 All Other Specialty Trade Contractors 236220 Commercial and Institutional Building Construction	$3,726,524	0.2%	Rank history: not on the FY2022–FY2025 lists; up 97 since FY2020.
61	National Association for Public Health Statistics and Information Systems, Inc. Top NAICS codes 541519 Other Computer Related Services 813920 Professional Organizations	$3,705,205	0.2%	Rank history: #54 in FY2022, #64 in FY2023, #54 in FY2024 and #48 in FY2025; up 146 since FY2020.
62	Fcn, Inc. Top NAICS codes 541519 Other Computer Related Services	$3,291,402	0.2%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 45 since FY2020.
63	Gonzales Consulting Services Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$3,258,477	0.2%	Rank history: #60 in FY2022, #74 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
64	Krueck & Sexton Architects, Ltd Top NAICS codes 541310 Architectural Services	$3,253,406	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	V3Gate, LLC Top NAICS codes 541519 Other Computer Related Services	$3,240,191	0.2%	Rank history: #35 in FY2022, #37 in FY2023, #22 in FY2024 and #33 in FY2025; up 21 since FY2020.
66	Quality Associates Inc. 2 awardees, including Konica Minolta Business Solutions U.s.a, Inc. Top NAICS codes 333316 Photographic and Photocopying Equipment Manufacturing 541512 Computer Systems Design Services 333315 Photographic and Photocopying Equipment Manufacturing	$3,183,703	0.2%	Rank history: not on the FY2022–FY2025 lists; down 26 since FY2020.
67	Broadleaf, Inc. Top NAICS codes 541519 Other Computer Related Services 484210 Used Household and Office Goods Moving	$3,058,645	0.2%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 18 since FY2020.
68	Creoal Consulting LLC Top NAICS codes 541511 Custom Computer Programming Services	$3,046,789	0.2%	Rank history: #63 in FY2022, #48 in FY2023, #45 in FY2024 and #59 in FY2025; up 5 since FY2020.
69	Sarazin General Contractors, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$2,978,852	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	DLT Solutions LLC 2 awardees, including TECH Data Corporation Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$2,947,154	0.2%	Rank history: #89 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
71	Swish Data Corporation Top NAICS codes 541519 Other Computer Related Services	$2,943,334	0.2%	Rank history: #56 in FY2022, #56 in FY2023, #52 in FY2024 and #68 in FY2025; down 11 since FY2020.
72	Pitney Bowes Inc. 2 awardees, including Pitney Bowes Global Financial Services LLC Top NAICS codes 532420 Office Machinery and Equipment Rental and Leasing 333298 All Other Industrial Machinery Manufacturing	$2,779,861	0.1%	Rank history: #77 in FY2022, #21 in FY2023, #75 in FY2024 and #75 in FY2025; up 20 since FY2020.
73	Friends Interpreting Services LLC Top NAICS codes 541930 Translation and Interpretation Services	$2,617,610	0.1%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
74	Coreonyx Government Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$2,612,694	0.1%	Rank history: #57 in FY2022, #70 in FY2023, #66 in FY2024 and #57 in FY2025; up 47 since FY2020.
75	Microsoft Corporation Top NAICS codes 541512 Computer Systems Design Services	$2,583,291	0.1%	Rank history: #38 in FY2022, #34 in FY2023, #34 in FY2024 and #26 in FY2025; up 26 since FY2020.
76	State Health Services Texas Department of Through Department of State Health Services Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 519190 All Other Information Services	$2,496,370	0.1%	Rank history: #79 in FY2022, #82 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
77	National Academy of Sciences Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$2,452,634	0.1%	Rank history: #71 in FY2022, #51 in FY2023, #77 in FY2024 and #55 in FY2025; down 11 since FY2020.
78	Evolver LLC Top NAICS codes 541513 Computer Facilities Management Services	$2,364,536	0.1%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
79	3Links Technologies, Inc. Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$2,312,632	0.1%	Rank history: #80 in FY2022, #83 in FY2023, #84 in FY2024 and not on the FY2025 list; up 19 since FY2020.
80	Alliance Technology Group, LLC Top NAICS codes 334112 Computer Storage Device Manufacturing 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$2,296,662	0.1%	Rank history: not on the FY2022–FY2025 lists; up 45 since FY2020.
81	California Department of Public Health Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$2,255,004	0.1%	Rank history: not on the FY2022–FY2023 lists, #73 in FY2024 and #50 in FY2025; up 1 since FY2020.
82	Graybar Electric Company, Inc. 2 awardees Top NAICS codes 334290 Other Communications Equipment Manufacturing	$2,212,806	0.1%	Rank history: #96 in FY2022, #87 in FY2023, #82 in FY2024 and #72 in FY2025; up 57 since FY2020.
83	Maximus Federal Services, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,184,932	0.1%	Rank history: not on the FY2022–FY2025 lists; down 55 since FY2020.
84	Schreiber Translations, Inc. Top NAICS codes 541930 Translation and Interpretation Services	$2,177,751	0.1%	Rank history: #98 in FY2022, #95 in FY2023, #93 in FY2024 and #73 in FY2025; up 26 since FY2020.
85	Experian PLC Through Experian Information Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$2,134,500	0.1%	Rank history: #40 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
86	GCC Technologies, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,107,330	0.1%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
87	Dynatrace LLC Top NAICS codes 511210 Software Publishers	$2,010,980	0.1%	Rank history: #76 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
88	State of Florida 2 awardees, including Florida Dept of Health Bureau Vital and Department of Management Services Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$2,001,129	0.1%	Rank history: #95 in FY2022, not on the FY2023 list, #69 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
89	The Mitre Corporation Top NAICS codes 541618 Other Management Consulting Services 541519 Other Computer Related Services	$1,970,635	0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
90	Edac Systems Inc. Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing	$1,872,283	0.1%	Rank history: #93 in FY2022, #58 in FY2023, not on the FY2024 list and #100 in FY2025; up 18 since FY2020.
91	Genco Systems Inc. Top NAICS codes 541330 Engineering Services	$1,832,325	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Alamo City Engineering Services, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,812,699	0.1%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
93	Cbre Inc. Through Turner & Townsend Heery, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,796,108	0.1%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
94	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,759,884	0.1%	Rank history: #64 in FY2022, #61 in FY2023, #37 in FY2024 and #30 in FY2025; up 144 since FY2020.
95	Magnum Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,737,229	0.1%	Rank history: not on the FY2022–FY2025 lists; up 33 since FY2020.
96	Behmke Reporting and Video Services, Inc. Top NAICS codes 561320 Temporary Help Services	$1,736,050	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Solutions Engineering Corp Top NAICS codes 541519 Other Computer Related Services	$1,630,075	0.1%	Rank history: #100 in FY2022, not on the FY2023–FY2024 lists and #81 in FY2025; up 22 since FY2020.
98	Bahfed Corp Top NAICS codes 541519 Other Computer Related Services 333316 Photographic and Photocopying Equipment Manufacturing	$1,629,861	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	PG&E Corporation Through Pacific Gas and Electric Company Top NAICS codes 221122 Electric Power Distribution	$1,578,000	0.1%	Rank history: not on the FY2022–FY2025 lists; up 13 since FY2020.
100	Tier TECH International, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,558,152	0.1%	Rank history: not on the FY2022–FY2025 lists; up 20 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 $1.87 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 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