Top 100 Department of Homeland Security Contractors, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Leidos Holdings, Inc. 17 awardees, including Leidos, Inc. and Leidos Security Detection & Automation, Inc. Top NAICS codes 541519 Other Computer Related Services 334517 Irradiation Apparatus Manufacturing 811219 Other Electronic and Precision Equipment Repair and Maintenance	$830,223,652	3.5%	Rank history: #3 in FY2022, #4 in FY2023, #6 in FY2024 and #6 in FY2025; up 3 since FY2020.
2	General Dynamics Corporation 17 awardees, including Csra LLC, General Dynamics Information Technology, Inc. and Gulfstream Aerospace Corporation Top NAICS codes 541511 Custom Computer Programming Services 541513 Computer Facilities Management Services 541512 Computer Systems Design Services	$707,519,231	3.0%	Rank history: #4 in FY2022, #8 in FY2023, #5 in FY2024 and #10 in FY2025; up 3 since FY2020.
3	The GEO Group, Inc. 5 awardees, including B.i. Incorporated and GEO Transport, Inc. Top NAICS codes 561210 Facilities Support Services 561612 Security Guards and Patrol Services 922140 Correctional Institutions	$538,110,049	2.3%	Rank history: #2 in FY2022, #3 in FY2023, #2 in FY2024 and #4 in FY2025; unchanged since FY2020.
4	CACI International Inc. 9 awardees, including Caci, Inc. - Federal, Caci Nss, LLC and Caci-Iss, LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$504,070,169	2.1%	Rank history: #5 in FY2022, #2 in FY2023, #3 in FY2024 and #3 in FY2025; up 6 since FY2020.
5	Securitas AB 3 awardees, including Paragon Systems Inc. and Securitas Critical Infrastructure Services, Inc. Top NAICS codes 561612 Security Guards and Patrol Services 541612 Human Resources Consulting Services	$425,806,070	1.8%	Rank history: #6 in FY2022, #7 in FY2023, #16 in FY2024 and not on the FY2025 list; up 1 since FY2020.
6	Eastern Shipbuilding Group, Inc. Top NAICS codes 336611 Ship Building and Repairing	$389,749,812	1.6%	Rank history: #45 in FY2022, #27 in FY2023, #48 in FY2024 and not on the FY2025 list; down 4 since FY2020.
7	Deployed Resources LLC Top NAICS codes 541614 Process, Physical Distribution, and Logistics Consulting Services 561210 Facilities Support Services 311991 Perishable Prepared Food Manufacturing	$375,699,326	1.6%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #16 in FY2025; up 7 since FY2020.
8	American Medical Response Inc. 2 awardees, including Guardian Flight LLC Top NAICS codes 621910 Ambulance Services 621999 All Other Miscellaneous Ambulatory Health Care Services 488119 Other Airport Operations	$352,108,251	1.5%	Rank history: #23 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
9	Triple Canopy Inc. 4 awardees, including Omniplex World Services Corporation and Centerra Group, LLC Top NAICS codes 561612 Security Guards and Patrol Services 561621 Security Systems Services (except Locksmiths) 561611 Investigation and Personal Background Check Services	$300,274,129	1.3%	Rank history: #9 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
10	Deloitte LLP 2 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$297,571,425	1.3%	Rank history: #17 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
11	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541511 Custom Computer Programming Services	$292,971,153	1.2%	Rank history: #8 in FY2022, #9 in FY2023, #4 in FY2024 and #11 in FY2025; unchanged since FY2020.
12	Lockheed Martin Corporation 11 awardees, including Sikorsky Aircraft Corporation and Derco Aerospace, Inc. Top NAICS codes 336411 Aircraft Manufacturing 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 541330 Engineering Services	$286,956,260	1.2%	Rank history: #62 in FY2022, #35 in FY2023, #51 in FY2024 and #84 in FY2025; up 45 since FY2020.
13	Cotton Commercial Usa, Inc. Top NAICS codes 561210 Facilities Support Services 484230 Specialized Freight (except Used Goods) Trucking, Long-Distance 336214 Travel Trailer and Camper Manufacturing	$276,474,080	1.2%	Rank history: not on the FY2022–FY2023 lists, #47 in FY2024 and #58 in FY2025; up 219 since FY2020.
14	Bollinger Shipyards Inc 2 awardees, including Bollinger Shipyards Lockport, L.L.C. and Chand, L.L.C. Top NAICS codes 336611 Ship Building and Repairing 333999 All Other Miscellaneous General Purpose Machinery Manufacturing 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables	$257,018,332	1.1%	Rank history: #28 in FY2022, #29 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
15	OSI Systems Inc. 3 awardees, including Rapiscan Systems Inc., American Science & Engineering Inc. and Rapiscan Laboratories, Inc. Top NAICS codes 334517 Irradiation Apparatus Manufacturing 811219 Other Electronic and Precision Equipment Repair and Maintenance 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$243,940,543	1.0%	Rank history: #93 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; up 33 since FY2020.
16	Accenture Federal Services LLC 3 awardees, including Accenture LLP Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 541612 Human Resources Consulting Services	$230,070,812	1.0%	Rank history: #22 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
17	Science Applications International Corporation 7 awardees, including Forfeiture Support Associates LLC and Engility Services, LLC Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$210,432,718	0.9%	Rank history: #11 in FY2022, #19 in FY2023, #19 in FY2024 and #20 in FY2025; up 5 since FY2020.
18	PAE Government Services Inc. 6 awardees, including PAE Aviation and Technical Services LLC, PAE Professional Services, LLC and FCI Federal, LLC Top NAICS codes 488190 Other Support Activities for Air Transportation 541513 Computer Facilities Management Services 561110 Office Administrative Services	$210,279,289	0.9%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; up 53 since FY2020.
19	Dell Federal Systems L.P. 3 awardees, including Dell Marketing L.P. and RSA Security LLC Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 561920 Convention and Trade Show Organizers	$207,603,811	0.9%	Rank history: #7 in FY2022, #16 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
20	Techflow, Inc. Top NAICS codes 811219 Other Electronic and Precision Equipment Repair and Maintenance 541511 Custom Computer Programming Services	$203,271,680	0.9%	Rank history: #13 in FY2022, #18 in FY2023, #12 in FY2024 and #21 in FY2025; down 2 since FY2020.
21	Mantech International Corporation 4 awardees, including Mantech Advanced Systems International, Inc., Infozen, LLC and Mantech SRS Technologies, Inc. Top NAICS codes 541512 Computer Systems Design Services 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$199,630,943	0.8%	Rank history: #19 in FY2022, #23 in FY2023, #28 in FY2024 and #35 in FY2025; up 3 since FY2020.
22	RTX Corporation 27 awardees, including Raytheon Company, Rockwell Collins, Inc. and Noresco, LLC Top NAICS codes 541330 Engineering Services 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 488190 Other Support Activities for Air Transportation	$189,989,563	0.8%	Rank history: #37 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; up 60 since FY2020.
23	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541720 Research and Development in the Social Sciences and Humanities	$160,602,937	0.7%	Rank history: #20 in FY2022, #17 in FY2023, #17 in FY2024 and #71 in FY2025; up 2 since FY2020.
24	International Business Machines Corporation 2 awardees Top NAICS codes 541512 Computer Systems Design Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541519 Other Computer Related Services	$157,509,260	0.7%	Rank history: #24 in FY2022, #44 in FY2023, #37 in FY2024 and #29 in FY2025; up 11 since FY2020.
25	Nana Regional Corporation Inc 11 awardees, including Akima Global Services, LLC, Affigent, LLC and Rivertech LLC Top NAICS codes 561612 Security Guards and Patrol Services 541519 Other Computer Related Services 541330 Engineering Services	$154,531,510	0.7%	Rank history: #32 in FY2022, #32 in FY2023, #89 in FY2024 and not on the FY2025 list; up 18 since FY2020.
26	Loyal Source Government Services LLC 2 awardees Top NAICS codes 561320 Temporary Help Services	$142,953,134	0.6%	Rank history: #36 in FY2022, #12 in FY2023, #11 in FY2024 and #40 in FY2025; up 1 since FY2020.
27	Corecivic, Inc. Top NAICS codes 561612 Security Guards and Patrol Services 922190 Other Justice, Public Order, and Safety Activities	$132,037,386	0.6%	Rank history: #27 in FY2022, #28 in FY2023, #20 in FY2024 and #15 in FY2025; up 3 since FY2020.
28	Mvm, Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$127,702,724	0.5%	Rank history: #10 in FY2022, #15 in FY2023, #18 in FY2024 and #31 in FY2025; up 4 since FY2020.
29	The Whiting-Turner Contracting Company Top NAICS codes 236220 Commercial and Institutional Building Construction	$117,864,509	0.5%	Rank history: #21 in FY2022, #48 in FY2023, #54 in FY2024 and #13 in FY2025; down 3 since FY2020.
30	Covenant Aviation Security LLC Top NAICS codes 561612 Security Guards and Patrol Services	$114,368,249	0.5%	Rank history: #35 in FY2022, #36 in FY2023, #26 in FY2024 and not on the FY2025 list; up 3 since FY2020.
31	B.i. Incorporated Top NAICS codes 561210 Facilities Support Services	$114,083,727	0.5%	Rank history: not on the FY2022–FY2025 lists; up 67 since FY2020.
32	Smiths Group PLC 2 awardees, including Smiths Detection Inc. Top NAICS codes 334517 Irradiation Apparatus Manufacturing 334519 Other Measuring and Controlling Device Manufacturing 532490 Other Commercial and Industrial Machinery and Equipment Rental and Leasing	$111,398,968	0.5%	Rank history: #49 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
33	Classic Air Charter Inc. Top NAICS codes 481219 Other Nonscheduled Air Transportation	$105,307,635	0.4%	Rank history: #15 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2020.
34	Northrop Grumman Corporation 16 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 336411 Aircraft Manufacturing 541512 Computer Systems Design Services 611710 Educational Support Services	$103,259,586	0.4%	Rank history: #66 in FY2022, #70 in FY2023, #73 in FY2024 and not on the FY2025 list; up 32 since FY2020.
35	Vanguard Inspection Services Top NAICS codes 541350 Building Inspection Services	$103,221,581	0.4%	Rank history: #90 in FY2022, #57 in FY2023, not on the FY2024 list and #85 in FY2025; up 289 since FY2020.
36	HP Enterprise Services LLC 8 awardees, including Peraton Inc., Peraton Enterprise Solutions LLC and Peraton Risk Decision Inc. Top NAICS codes 541330 Engineering Services 561611 Investigation and Personal Background Check Services 541512 Computer Systems Design Services	$103,105,196	0.4%	Rank history: #26 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; up 84 since FY2020.
37	V. F. Corporation Through VF Imagewear, Inc. Top NAICS codes 424320 Men's and Boys' Clothing and Furnishings Merchant Wholesalers	$102,399,558	0.4%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; up 54 since FY2020.
38	Analogic Corporation Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$101,855,964	0.4%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
39	On Assignment, Inc. Through ECS Federal, LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$101,575,307	0.4%	Rank history: #30 in FY2022, #34 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
40	Rq-Aecom 2 JV Top NAICS codes 236220 Commercial and Institutional Building Construction	$97,938,962	0.4%	Rank history: #38 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
41	STG International, Inc. Top NAICS codes 621999 All Other Miscellaneous Ambulatory Health Care Services	$95,114,856	0.4%	Rank history: #41 in FY2022, #43 in FY2023, #44 in FY2024 and not on the FY2025 list; down 13 since FY2020.
42	The Compass PTS JV Top NAICS codes 541330 Engineering Services	$91,982,343	0.4%	Rank history: not on the FY2022 list, #50 in FY2023 and not on the FY2024–FY2025 lists; up 22 since FY2020.
43	Family Endeavors, Inc. Top NAICS codes 624230 Emergency and Other Relief Services	$91,763,649	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	Tutor Perini Corporation Top NAICS codes 236220 Commercial and Institutional Building Construction	$88,285,929	0.4%	Rank history: #12 in FY2022 and not on the FY2023–FY2025 lists; up 249 since FY2020.
45	Motorola Inc Through Motorola Solutions, Inc. Top NAICS codes 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 541330 Engineering Services 811213 Communication Equipment Repair and Maintenance	$87,558,369	0.4%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
46	Central Association for the Blind, Inc. Top NAICS codes 339113 Surgical Appliance and Supplies Manufacturing	$86,624,976	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Brillient Corporation Top NAICS codes 561210 Facilities Support Services 561110 Office Administrative Services	$84,623,524	0.4%	Rank history: not on the FY2022 list, #77 in FY2023, #67 in FY2024 and #78 in FY2025; up 154 since FY2020.
48	Perspecta Inc. 5 awardees, including Peraton Enterprise Solutions LLC, Knight Point Systems, LLC and Peraton Risk Decision Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541512 Computer Systems Design Services 561611 Investigation and Personal Background Check Services	$83,955,648	0.4%	Rank history: not on the FY2022–FY2025 lists; down 25 since FY2020.
49	Dev Technology Group Inc. Top NAICS codes 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541511 Custom Computer Programming Services	$83,908,865	0.4%	Rank history: #70 in FY2022, #46 in FY2023, #40 in FY2024 and #32 in FY2025; down 13 since FY2020.
50	Government Acquisitions LLC Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$83,454,990	0.4%	Rank history: #47 in FY2022, #42 in FY2023, #74 in FY2024 and #81 in FY2025; up 11 since FY2020.
51	Logistics Management Institute Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$83,265,001	0.4%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
52	Parsons Brinckerhoff Holdings Inc. Through WSP USA Services Inc. Top NAICS codes 541350 Building Inspection Services	$80,300,042	0.3%	Rank history: not on the FY2022–FY2025 lists; up 225 since FY2020.
53	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation	$77,967,973	0.3%	Rank history: #68 in FY2022, #65 in FY2023 and not on the FY2024–FY2025 lists; up 55 since FY2020.
54	Walsh Federal LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$77,261,071	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
55	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 511210 Software Publishers	$76,319,051	0.3%	Rank history: #39 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
56	Serco North America (Holdings) Inc 4 awardees, including Serco Inc., Whitney Bradley & Brown, Inc. and Brtrc Federal Solutions, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541330 Engineering Services 541512 Computer Systems Design Services	$74,885,366	0.3%	Rank history: not on the FY2022–FY2025 lists; up 32 since FY2020.
57	Starr II, A Joint Venture Top NAICS codes 541330 Engineering Services	$74,768,966	0.3%	Rank history: #96 in FY2022, #78 in FY2023, #91 in FY2024 and not on the FY2025 list; up 15 since FY2020.
58	Akira Technologies Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services 334210 Telephone Apparatus Manufacturing	$74,323,012	0.3%	Rank history: #48 in FY2022, #55 in FY2023, #61 in FY2024 and not on the FY2025 list; up 36 since FY2020.
59	Guidehouse Inc. 2 awardees Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541219 Other Accounting Services 541512 Computer Systems Design Services	$73,770,092	0.3%	Rank history: #33 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
60	At&T Inc. 10 awardees, including Att Mobility LLC, At&T Enterprises, LLC and At&T Technical Services Company, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 517210 Wireless Telecommunications Carriers (except Satellite)	$71,376,147	0.3%	Rank history: #29 in FY2022, #26 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
61	Widepoint Corporation Through Widepoint Integrated Solutions Corp Top NAICS codes 517911 Telecommunications Resellers 541511 Custom Computer Programming Services	$69,886,805	0.3%	Rank history: #61 in FY2022, #47 in FY2023, #46 in FY2024 and not on the FY2025 list; up 39 since FY2020.
62	Rolls-Royce Military Aero Engines Ltd 4 awardees, including Rolls-Royce Marine North America Inc., Rolls-Royce Corporation and Rolls-Royce Solutions America Inc. Top NAICS codes 332999 All Other Miscellaneous Fabricated Metal Product Manufacturing 488190 Other Support Activities for Air Transportation 336611 Ship Building and Repairing	$69,260,517	0.3%	Rank history: not on the FY2022 list, #93 in FY2023 and not on the FY2024–FY2025 lists; up 41 since FY2020.
63	The Rand Corporation Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$66,846,525	0.3%	Rank history: #58 in FY2022, #52 in FY2023, #63 in FY2024 and not on the FY2025 list; up 118 since FY2020.
64	Govplace, LLC Top NAICS codes 541519 Other Computer Related Services 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing	$66,708,596	0.3%	Rank history: #52 in FY2022, #62 in FY2023, #57 in FY2024 and #77 in FY2025; down 1 since FY2020.
65	Reli Group Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$66,201,573	0.3%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
66	Synergy Business Innovation & Solutions Inc. Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$65,284,861	0.3%	Rank history: #83 in FY2022, #86 in FY2023, not on the FY2024 list and #82 in FY2025; up 24 since FY2020.
67	Mccarthy Mortenson Nbaf A Joint Venture Top NAICS codes 236220 Commercial and Institutional Building Construction	$65,244,333	0.3%	Rank history: not on the FY2022–FY2025 lists; up 198 since FY2020.
68	Vendtech-Sgi LLC Top NAICS codes 561612 Security Guards and Patrol Services	$64,287,060	0.3%	Rank history: #72 in FY2022, #63 in FY2023, #55 in FY2024 and #72 in FY2025; down 3 since FY2020.
69	Panamerica Computers, Inc. 2 awardees Top NAICS codes 541519 Other Computer Related Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers 443120 Computer and Software Stores	$63,805,910	0.3%	Rank history: #44 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
70	Aptim Federal Services LLC Top NAICS codes 561990 All Other Support Services 236220 Commercial and Institutional Building Construction	$63,577,255	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	Fcn, Inc. Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$63,041,456	0.3%	Rank history: not on the FY2022–FY2025 lists; down 37 since FY2020.
72	Astrophysics Inc. Top NAICS codes 334517 Irradiation Apparatus Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$61,380,622	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Thundercat Technology, LLC Top NAICS codes 541519 Other Computer Related Services 334310 Audio and Video Equipment Manufacturing 334419 Other Electronic Component Manufacturing	$59,201,761	0.2%	Rank history: not on the FY2022–FY2025 lists; down 28 since FY2020.
74	Grant Thornton International Ltd 2 awardees, including Grant Thornton Public Sector LLC and Grant Thornton LLP Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541219 Other Accounting Services	$58,410,622	0.2%	Rank history: #56 in FY2022 and not on the FY2023–FY2025 lists; up 41 since FY2020.
75	Sciolex Corporation Top NAICS codes 561110 Office Administrative Services	$58,087,971	0.2%	Rank history: #54 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
76	City & County of Denver	$57,367,832	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Mythics, LLC 2 awardees, including Emergent, LLC Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$56,471,779	0.2%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
78	ACE Info Solutions LLC Through Guidehouse Digital LLC Top NAICS codes 541512 Computer Systems Design Services 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$56,437,248	0.2%	Rank history: not on the FY2022 list, #87 in FY2023 and not on the FY2024–FY2025 lists; up 165 since FY2020.
79	Global Precision Systems, LLC Top NAICS codes 561612 Security Guards and Patrol Services 561210 Facilities Support Services	$55,552,084	0.2%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
80	Tribalco LLC Top NAICS codes 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 541519 Other Computer Related Services 541330 Engineering Services	$54,662,578	0.2%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
81	Resilience Action Partners Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$54,154,372	0.2%	Rank history: not on the FY2022–FY2025 lists; up 75 since FY2020.
82	Octo Consulting Group Inc. Through Sevatec LLC Top NAICS codes 541512 Computer Systems Design Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$53,958,374	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Golden Svcs, LLC Top NAICS codes 561612 Security Guards and Patrol Services	$53,117,406	0.2%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
84	ITC Federal, LLC Top NAICS codes 561110 Office Administrative Services 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$53,021,595	0.2%	Rank history: #53 in FY2022, #38 in FY2023, #38 in FY2024 and #70 in FY2025; up 11 since FY2020.
85	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$51,984,433	0.2%	Rank history: #42 in FY2022, #31 in FY2023, #24 in FY2024 and #30 in FY2025; down 6 since FY2020.
86	Strategic Enterprise Solutions Inc. Through Steampunk, Inc. Top NAICS codes 541512 Computer Systems Design Services	$51,564,272	0.2%	Rank history: #55 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; up 44 since FY2020.
87	Alethix, LLC Top NAICS codes 541511 Custom Computer Programming Services 541512 Computer Systems Design Services	$51,428,055	0.2%	Rank history: #78 in FY2022, #97 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
88	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$51,411,176	0.2%	Rank history: #50 in FY2022, #71 in FY2023, #59 in FY2024 and not on the FY2025 list; down 11 since FY2020.
89	Arctic Slope Regional Corporation 3 awardees, including Asrc Federal Field Services, LLC, Asrc Federal Data Network Technologies, LLC and Petro Star Inc. Top NAICS codes 561210 Facilities Support Services 541512 Computer Systems Design Services 324110 Petroleum Refineries	$50,619,801	0.2%	Rank history: #67 in FY2022, #60 in FY2023, not on the FY2024 list and #74 in FY2025; up 3 since FY2020.
90	Inserso Corporation Top NAICS codes 541512 Computer Systems Design Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$50,023,614	0.2%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; up 26 since FY2020.
91	VMD Systems Integrators, LLC Top NAICS codes 561612 Security Guards and Patrol Services 541512 Computer Systems Design Services	$49,772,520	0.2%	Rank history: not on the FY2022–FY2025 lists; up 36 since FY2020.
92	Davenport Aviation Inc. Top NAICS codes 339113 Surgical Appliance and Supplies Manufacturing	$49,198,172	0.2%	Rank history: not on the FY2022–FY2025 lists; up 407 since FY2020.
93	Sierra Nevada Company, LLC 2 awardees Top NAICS codes 336411 Aircraft Manufacturing 541519 Other Computer Related Services	$49,153,755	0.2%	Rank history: not on the FY2022–FY2025 lists; down 52 since FY2020.
94	Four LLC Top NAICS codes 541519 Other Computer Related Services	$48,623,846	0.2%	Rank history: #80 in FY2022, #73 in FY2023, #72 in FY2024 and not on the FY2025 list; down 7 since FY2020.
95	BAE Systems PLC 6 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Land & Armaments L.P. and BAE Systems Information and Electronic Systems Integration Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541330 Engineering Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$47,220,571	0.2%	Rank history: #79 in FY2022, #83 in FY2023, #99 in FY2024 and not on the FY2025 list; up 42 since FY2020.
96	CDA Incorporated Top NAICS codes 561612 Security Guards and Patrol Services	$45,555,295	0.2%	Rank history: #97 in FY2022, not on the FY2023 list, #79 in FY2024 and #61 in FY2025; down 15 since FY2020.
97	Miracle Systems LLC Top NAICS codes 541330 Engineering Services 541219 Other Accounting Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$44,714,111	0.2%	Rank history: #98 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
98	Airbus Americas Inc. 3 awardees, including Airbus Helicopters, Inc., Airbus DS Military Aircraft, Inc. and Airbus US Space & Defense Inc. Top NAICS codes 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing 488190 Other Support Activities for Air Transportation 541330 Engineering Services	$44,037,917	0.2%	Rank history: #71 in FY2022, #91 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
99	Enterprise Resource Planning International, LLC 2 awardees, including Enterprise Resource Planned Systems International, LLC Top NAICS codes 541512 Computer Systems Design Services	$42,647,354	0.2%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
100	Mare Island Dry Dock LLC Top NAICS codes 336611 Ship Building and Repairing	$41,149,648	0.2%	Rank history: not on the FY2022–FY2025 lists; up 220 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 $23.8 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.

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